Merge pull request #215 from CJackHwang/dev

fix: ignore INCOMPLETE status messages in SSE stream parsing to prevent stream interruption

.env.example

@@ -1,5 +1,8 @@
 # DS2API runtime
+# Runtime listen port inside the app/container
 PORT=5001
+# Docker Compose host port (compose only; container still listens on PORT)
+DS2API_HOST_PORT=6011
 LOG_LEVEL=INFO
 
 # Admin authentication

.github/workflows/quality-gates.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.24.x"
+          go-version: "1.26.x"
 
       - name: Setup Node
         uses: actions/setup-node@v4

.github/workflows/release-artifacts.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.24.x"
+          go-version: "1.26.x"
 
       - name: Setup Node
         uses: actions/setup-node@v4

.gitignore

@@ -9,6 +9,7 @@ config.json
 *.swo
 *~
 .DS_Store
+opencode.json
 
 # Logs
 *.log

API.en.md

@@ -52,8 +52,7 @@ cp config.example.json config.json
 Use it per deployment mode:
 
 - Local run: read `config.json` directly
-- Docker / Vercel: generate Base64 from `config.json`, then set `DS2API_CONFIG_JSON`
-- Compatibility note: `DS2API_CONFIG_JSON` may also contain raw JSON directly; `CONFIG_JSON` is the legacy fallback variable
+- Docker / Vercel: generate Base64 from `config.json`, then set `DS2API_CONFIG_JSON`, or paste raw JSON directly
 
 ```bash
 DS2API_CONFIG_JSON="$(base64 < config.json | tr -d '\n')"
@@ -356,7 +355,8 @@ data: [DONE]
 ```
 
 If `tool_choice=required` is violated in stream mode, DS2API emits `response.failed` then `[DONE]` (no `response.completed`).
-Unknown tool names (outside declared `tools`) are rejected and will not be emitted as valid tool calls.
+
+> Current behavior: the parser tries to extract structured tool calls and does not enforce a hard allow-list reject; your tool executor should still validate against a whitelist before executing.
 
 ### `GET /v1/responses/{response_id}`
 
@@ -642,8 +642,9 @@ Reads runtime settings and status, including:
 - `success`
 - `admin` (`has_password_hash`, `jwt_expire_hours`, `jwt_valid_after_unix`, `default_password_warning`)
 - `runtime` (`account_max_inflight`, `account_max_queue`, `global_max_inflight`, `token_refresh_interval_hours`)
+- `compat` (`wide_input_strict_output`, `strip_reference_markers`)
 - `responses` / `embeddings`
-- `auto_delete` (`sessions`)
+- `auto_delete` (`mode`: `none` / `single` / `all`; legacy `sessions=true` is still treated as `all`)
 - `claude_mapping` / `model_aliases`
 - `env_backed`, `needs_vercel_sync`
 - `toolcall` policy is fixed to `feature_match + high` and is no longer returned or editable via settings
@@ -654,9 +655,10 @@ Hot-updates runtime settings. Supported fields:
 
 - `admin.jwt_expire_hours`
 - `runtime.account_max_inflight` / `runtime.account_max_queue` / `runtime.global_max_inflight` / `runtime.token_refresh_interval_hours`
+- `compat.wide_input_strict_output` / `compat.strip_reference_markers`
 - `responses.store_ttl_seconds`
 - `embeddings.provider`
-- `auto_delete.sessions`
+- `auto_delete.mode`
 - `claude_mapping`
 - `model_aliases`
 - `toolcall` policy is fixed and is no longer writable through settings
@@ -684,6 +686,8 @@ The request can send config directly, or wrapped as `{"config": {...}, "mode":"m
 Query params `?mode=merge` / `?mode=replace` are also supported.
 Import accepts `keys`, `accounts`, `claude_mapping` / `claude_model_mapping`, `model_aliases`, `admin`, `runtime`, `responses`, `embeddings`, and `auto_delete`; legacy `toolcall` fields are ignored.
 
+> `compat` fields are managed via `/admin/settings` or the config file; this import endpoint does not update `compat`.
+
 ### `GET /admin/config/export`
 
 Exports full config in three forms: `config`, `json`, and `base64`.
@@ -758,17 +762,25 @@ Returned items also include `test_status`, usually `ok` or `failed`.
   "available_accounts": ["a@example.com"],
   "in_use_accounts": ["b@example.com"],
   "max_inflight_per_account": 2,
-  "recommended_concurrency": 8
+  "global_max_inflight": 8,
+  "recommended_concurrency": 8,
+  "waiting": 0,
+  "max_queue_size": 8
 }
 ```
 
 | Field | Description |
 | --- | --- |
-| `available` | Currently available accounts |
-| `in_use` | Currently in-use accounts |
+| `available` | Accounts that still have spare inflight capacity |
+| `in_use` | Number of occupied in-flight slots |
 | `total` | Total accounts |
+| `available_accounts` | List of account IDs with remaining inflight capacity |
+| `in_use_accounts` | List of account IDs currently in use |
 | `max_inflight_per_account` | Per-account inflight limit |
+| `global_max_inflight` | Global inflight limit |
 | `recommended_concurrency` | Suggested concurrency (`total × max_inflight_per_account`) |
+| `waiting` | Number of queued requests currently waiting |
+| `max_queue_size` | Waiting queue limit |
 
 ### `POST /admin/accounts/test`
 

API.md

@@ -52,8 +52,7 @@ cp config.example.json config.json
 按部署方式使用：
 
 - 本地运行：直接读取 `config.json`
-- Docker / Vercel：从 `config.json` 生成 Base64，填入 `DS2API_CONFIG_JSON`
-- 兼容写法：`DS2API_CONFIG_JSON` 也可直接填原始 JSON；`CONFIG_JSON` 是旧版兼容回退变量
+- Docker / Vercel：从 `config.json` 生成 Base64，填入 `DS2API_CONFIG_JSON`，也可以直接填原始 JSON
 
 ```bash
 DS2API_CONFIG_JSON="$(base64 < config.json | tr -d '\n')"
@@ -509,8 +508,6 @@ data: {"type":"message_stop"}
 }
 ```
 
-返回项还会包含 `test_status`，当前值通常为 `ok` 或 `failed`。
-
 ---
 
 ## Gemini 兼容接口
@@ -651,8 +648,9 @@ data: {"type":"message_stop"}
 - `success`
 - `admin`（`has_password_hash`、`jwt_expire_hours`、`jwt_valid_after_unix`、`default_password_warning`）
 - `runtime`（`account_max_inflight`、`account_max_queue`、`global_max_inflight`、`token_refresh_interval_hours`）
+- `compat`（`wide_input_strict_output`、`strip_reference_markers`）
 - `responses` / `embeddings`
-- `auto_delete`（`sessions`）
+- `auto_delete`（`mode`：`none` / `single` / `all`；旧配置 `sessions=true` 仍按 `all` 处理）
 - `claude_mapping` / `model_aliases`
 - `env_backed`、`needs_vercel_sync`
 - `toolcall` 策略已固定为 `feature_match + high`，不再通过 settings 返回或修改
@@ -663,9 +661,10 @@ data: {"type":"message_stop"}
 
 - `admin.jwt_expire_hours`
 - `runtime.account_max_inflight` / `runtime.account_max_queue` / `runtime.global_max_inflight` / `runtime.token_refresh_interval_hours`
+- `compat.wide_input_strict_output` / `compat.strip_reference_markers`
 - `responses.store_ttl_seconds`
 - `embeddings.provider`
-- `auto_delete.sessions`
+- `auto_delete.mode`
 - `claude_mapping`
 - `model_aliases`
 - `toolcall` 策略已固定，不再作为可写入字段
@@ -693,6 +692,8 @@ data: {"type":"message_stop"}
 也支持在查询参数里传 `?mode=merge` / `?mode=replace`。
 导入时会接受 `keys`、`accounts`、`claude_mapping` / `claude_model_mapping`、`model_aliases`、`admin`、`runtime`、`responses`、`embeddings`、`auto_delete` 等字段；`toolcall` 相关字段会被忽略。
 
+> `compat` 相关字段请通过 `/admin/settings` 或配置文件管理；该导入接口不会更新 `compat`。
+
 ### `GET /admin/config/export`
 
 导出完整配置，返回 `config`、`json`、`base64` 三种格式。
@@ -765,17 +766,25 @@ data: {"type":"message_stop"}
   "available_accounts": ["a@example.com"],
   "in_use_accounts": ["b@example.com"],
   "max_inflight_per_account": 2,
-  "recommended_concurrency": 8
+  "global_max_inflight": 8,
+  "recommended_concurrency": 8,
+  "waiting": 0,
+  "max_queue_size": 8
 }
 ```
 
 | 字段 | 说明 |
 | --- | --- |
-| `available` | 当前可用账号数 |
-| `in_use` | 当前使用中的账号数 |
+| `available` | 仍有剩余并发槽位的账号数 |
+| `in_use` | 当前已占用的 in-flight 槽位数 |
 | `total` | 总账号数 |
+| `available_accounts` | 仍有剩余并发槽位的账号 ID 列表 |
+| `in_use_accounts` | 当前处于使用中的账号 ID 列表 |
 | `max_inflight_per_account` | 每账号并发上限 |
+| `global_max_inflight` | 全局并发上限 |
 | `recommended_concurrency` | 建议并发值（`total × max_inflight_per_account`） |
+| `waiting` | 当前等待中的请求数 |
+| `max_queue_size` | 等待队列上限 |
 
 ### `POST /admin/accounts/test`
 

README.MD

@@ -76,7 +76,7 @@ flowchart LR
 - **前端**：React 管理台（`webui/`），运行时托管静态构建产物
 - **部署**：本地运行、Docker、Vercel Serverless、Linux systemd
 
-### 3.0 底层架构调整（相较旧版本）
+### 3.X 底层架构调整（相较旧版本）
 
 - **统一路由内核**：所有协议入口统一汇聚到 `internal/server/router.go`，并在同一路由树中注册 OpenAI / Claude / Gemini / Admin / WebUI 路由，避免多入口行为漂移。
 - **统一执行链路**：Claude / Gemini 入口先经 `internal/translatorcliproxy` 做协议转换，再进入 `openai.ChatCompletions` 统一处理工具调用与流式语义，最后再转换回原协议响应。
@@ -111,7 +111,6 @@ flowchart LR
 | P0 | Anthropic SDK（messages） | ✅ |
 | P0 | Google Gemini SDK（generateContent） | ✅ |
 | P1 | LangChain / LlamaIndex / OpenWebUI（OpenAI 兼容接入） | ✅ |
-| P2 | MCP 独立桥接层 | 规划中 |
 
 ## 模型支持
 
@@ -160,12 +159,11 @@ cp config.example.json config.json
 
 后续部署建议：
 - 本地运行：直接读取 `config.json`
-- Docker / Vercel：由 `config.json` 生成 `DS2API_CONFIG_JSON`（Base64）注入环境变量
-- 兼容写法：`DS2API_CONFIG_JSON` 也可以直接写原始 JSON；`CONFIG_JSON` 是旧版回退变量
+- Docker / Vercel：由 `config.json` 生成 `DS2API_CONFIG_JSON`（Base64）注入环境变量，也可以直接写原始 JSON
 
 ### 方式一：本地运行
 
-**前置要求**：Go 1.26+，Node.js 20+（仅在需要构建 WebUI 时）
+**前置要求**：Go 1.26+，Node.js `20.19+` 或 `22.12+`（仅在需要构建 WebUI 时）
 
 ```bash
 # 1. 克隆仓库
@@ -180,7 +178,9 @@ cp config.example.json config.json
 go run ./cmd/ds2api
 ```
 
-默认监听地址：`http://localhost:5001`
+默认本地访问地址：`http://127.0.0.1:5001`
+
+服务实际绑定：`0.0.0.0:5001`，因此同一局域网设备通常也可以通过你的内网 IP 访问。
 
 > **WebUI 自动构建**：本地首次启动时，若 `static/admin` 不存在，会自动尝试执行 `npm ci`（仅在缺少依赖时）和 `npm run build -- --outDir static/admin --emptyOutDir`（需要本机有 Node.js）。你也可以手动构建：`./scripts/build-webui.sh`
 
@@ -191,7 +191,7 @@ go run ./cmd/ds2api
 cp .env.example .env
 cp config.example.json config.json
 
-# 2. 编辑 .env（至少设置 DS2API_ADMIN_KEY）
+# 2. 编辑 .env（至少设置 DS2API_ADMIN_KEY；如需修改宿主机端口，可额外设置 DS2API_HOST_PORT）
 #    DS2API_ADMIN_KEY=请替换为强密码
 
 # 3. 启动
@@ -201,7 +201,7 @@ docker-compose up -d
 docker-compose logs -f
 ```
 
-默认 `docker-compose.yml` 会把宿主机 `6011` 映射到容器内的 `5001`。如果你希望直接对外暴露 `5001`，请调整 `ports` 配置。
+默认 `docker-compose.yml` 会把宿主机 `6011` 映射到容器内的 `5001`。如果你希望直接对外暴露 `5001`，请设置 `DS2API_HOST_PORT=5001`（或者手动调整 `ports` 配置）。
 
 更新镜像：`docker-compose up -d --build`
 
@@ -290,7 +290,8 @@ cp opencode.json.example opencode.json
     "o3": "deepseek-reasoner"
   },
   "compat": {
-    "wide_input_strict_output": true
+    "wide_input_strict_output": true,
+    "strip_reference_markers": true
   },
   "responses": {
     "store_ttl_seconds": 900
@@ -312,7 +313,7 @@ cp opencode.json.example opencode.json
     "token_refresh_interval_hours": 6
   },
   "auto_delete": {
-    "sessions": false
+    "mode": "none"
   }
 }
 ```
@@ -322,13 +323,14 @@ cp opencode.json.example opencode.json
 - `token`：配置文件中即使填写也会在加载时被清空（不会从 `config.json` 读取 token）；实际 token 仅在运行时内存中维护并自动刷新
 - `model_aliases`：常见模型名（如 GPT/Codex/Claude）到 DeepSeek 模型的映射
 - `compat.wide_input_strict_output`：建议保持 `true`（当前实现默认宽进严出）
-- `toolcall`：策略已固定为特征匹配 + 高置信早发，不再作为可配置项
+- `compat.strip_reference_markers`：建议保持 `true`，用于清理可见输出中的引用/标记
+- `toolcall`：旧字段，当前实现已固定为特征匹配 + 高置信早发；即使保留在配置里也会被忽略
 - `responses.store_ttl_seconds`：`/v1/responses/{id}` 的内存缓存 TTL
 - `embeddings.provider`：embedding 提供方（当前内置 `deterministic/mock/builtin`）
 - `claude_mapping`：字典中 `fast`/`slow` 后缀映射到对应 DeepSeek 模型（兼容读取 `claude_model_mapping`）
 - `admin`：管理后台设置（JWT 过期时间、密码哈希等），可通过 Admin Settings API 热更新
 - `runtime`：运行时参数（并发限制、队列大小、托管账号 token 刷新间隔），可通过 Admin Settings API 热更新；`account_max_queue=0`/`global_max_inflight=0` 表示按推荐值自动计算，`token_refresh_interval_hours=6` 为默认强制重登间隔
-- `auto_delete.sessions`：是否在请求结束后自动清理 DeepSeek 会话（默认 `false`，可在 Settings 热更新）
+- `auto_delete.mode`：请求结束后如何清理 DeepSeek 远端聊天记录，支持 `none`（默认，不删除）、`single`（仅删除当前会话）、`all`（清空全部会话）；旧配置里的 `auto_delete.sessions=true` 仍会被视为 `all`
 
 ### 环境变量
 
@@ -341,7 +343,6 @@ cp opencode.json.example opencode.json
 | `DS2API_JWT_EXPIRE_HOURS` | Admin JWT 过期小时数 | `24` |
 | `DS2API_CONFIG_PATH` | 配置文件路径 | `config.json` |
 | `DS2API_CONFIG_JSON` | 直接注入配置（JSON 或 Base64） | — |
-| `CONFIG_JSON` | 旧版兼容配置注入 | — |
 | `DS2API_ENV_WRITEBACK` | 环境变量模式下自动写回配置文件并切换文件模式（`1/true/yes/on`） | 关闭 |
 | `DS2API_WASM_PATH` | PoW WASM 文件路径 | 自动查找 |
 | `DS2API_STATIC_ADMIN_DIR` | 管理台静态文件目录 | `static/admin` |
@@ -350,22 +351,16 @@ cp opencode.json.example opencode.json
 | `DS2API_DEV_PACKET_CAPTURE_LIMIT` | 本地抓包保留条数（超出自动淘汰） | `5` |
 | `DS2API_DEV_PACKET_CAPTURE_MAX_BODY_BYTES` | 单条响应体最大记录字节数 | `2097152` |
 | `DS2API_ACCOUNT_MAX_INFLIGHT` | 每账号最大并发 in-flight 请求数 | `2` |
-| `DS2API_ACCOUNT_CONCURRENCY` | 同上（兼容旧名） | — |
 | `DS2API_ACCOUNT_MAX_QUEUE` | 等待队列上限 | `recommended_concurrency` |
-| `DS2API_ACCOUNT_QUEUE_SIZE` | 同上（兼容旧名） | — |
 | `DS2API_GLOBAL_MAX_INFLIGHT` | 全局最大 in-flight 请求数 | `recommended_concurrency` |
-| `DS2API_MAX_INFLIGHT` | 同上（兼容旧名） | — |
 | `DS2API_VERCEL_INTERNAL_SECRET` | Vercel 混合流式内部鉴权密钥 | 回退用 `DS2API_ADMIN_KEY` |
 | `DS2API_VERCEL_STREAM_LEASE_TTL_SECONDS` | 流式 lease 过期秒数 | `900` |
-| `DS2API_DEV_PACKET_CAPTURE` | 本地开发抓包开关（记录最近会话请求/响应体） | 本地非 Vercel 默认开启 |
-| `DS2API_DEV_PACKET_CAPTURE_LIMIT` | 本地抓包保留条数（超出自动淘汰） | `5` |
-| `DS2API_DEV_PACKET_CAPTURE_MAX_BODY_BYTES` | 单条响应体最大记录字节数 | `2097152` |
 | `VERCEL_TOKEN` | Vercel 同步 token | — |
 | `VERCEL_PROJECT_ID` | Vercel 项目 ID | — |
 | `VERCEL_TEAM_ID` | Vercel 团队 ID | — |
 | `DS2API_VERCEL_PROTECTION_BYPASS` | Vercel 部署保护绕过密钥（内部 Node→Go 调用） | — |
 
-> 提示：当检测到 `DS2API_CONFIG_JSON/CONFIG_JSON` 时，管理台会显示当前模式风险与自动持久化状态（含 `DS2API_CONFIG_PATH` 路径与模式切换说明）。
+> 提示：当检测到 `DS2API_CONFIG_JSON` 时，管理台会显示当前模式风险与自动持久化状态（含 `DS2API_CONFIG_PATH` 路径与模式切换说明）。
 
 ## 鉴权模式
 
@@ -455,6 +450,7 @@ ds2api/
 │   ├── deepseek/            # DeepSeek API 客户端、PoW WASM
 │   ├── js/                  # Node 运行时流式处理与兼容逻辑
 │   ├── devcapture/          # 开发抓包模块
+│   ├── rawsample/           # 原始流样本可见文本提取与回放辅助
 │   ├── format/              # 输出格式化
 │   ├── prompt/              # Prompt 构建
 │   ├── server/              # HTTP 路由与中间件（chi router）
@@ -476,6 +472,7 @@ ds2api/
 ├── tests/
 │   ├── compat/              # 兼容性测试夹具与期望输出
 │   ├── node/                # Node 侧单元测试（chat-stream / tool-sieve）
+│   ├── raw_stream_samples/  # 原始 SSE 样本与回放元数据
 │   └── scripts/             # 统一测试脚本入口（unit/e2e）
 ├── docs/                    # 部署 / 贡献 / 测试等辅助文档
 ├── static/admin/            # WebUI 构建产物（不提交到 Git）

README.en.md

@@ -76,7 +76,7 @@ flowchart LR
 - **Frontend**: React admin panel (`webui/`), served as static build at runtime
 - **Deployment**: local run, Docker, Vercel serverless, Linux systemd
 
-### 3.0 Architecture Changes (vs older releases)
+### 3.X Architecture Changes (vs older releases)
 
 - **Unified routing core**: all protocol entries are now centralized through `internal/server/router.go`, with OpenAI / Claude / Gemini / Admin / WebUI routes registered in one tree to avoid multi-entry drift.
 - **Unified execution chain**: Claude/Gemini entries are translated by `internal/translatorcliproxy`, then executed through `openai.ChatCompletions` for shared tool-calling and stream semantics, then translated back to the client protocol.
@@ -111,7 +111,6 @@ flowchart LR
 | P0 | Anthropic SDK (messages) | ✅ |
 | P0 | Google Gemini SDK (generateContent) | ✅ |
 | P1 | LangChain / LlamaIndex / OpenWebUI (OpenAI-compatible integration) | ✅ |
-| P2 | MCP standalone bridge | Planned |
 
 ## Model Support
 
@@ -160,12 +159,11 @@ cp config.example.json config.json
 
 Recommended per deployment mode:
 - Local run: read `config.json` directly
-- Docker / Vercel: generate Base64 from `config.json` and inject as `DS2API_CONFIG_JSON`
-- Compatibility note: `DS2API_CONFIG_JSON` may also contain raw JSON directly; `CONFIG_JSON` is the legacy fallback variable
+- Docker / Vercel: generate Base64 from `config.json` and inject as `DS2API_CONFIG_JSON`, or paste raw JSON directly
 
 ### Option 1: Local Run
 
-**Prerequisites**: Go 1.26+, Node.js 20+ (only if building WebUI locally)
+**Prerequisites**: Go 1.26+, Node.js `20.19+` or `22.12+` (only if building WebUI locally)
 
 ```bash
 # 1. Clone
@@ -180,7 +178,9 @@ cp config.example.json config.json
 go run ./cmd/ds2api
 ```
 
-Default URL: `http://localhost:5001`
+Default local URL: `http://127.0.0.1:5001`
+
+The server actually binds to `0.0.0.0:5001`, so devices on the same LAN can usually reach it through your private IP as well.
 
 > **WebUI auto-build**: On first local startup, if `static/admin` is missing, DS2API will auto-run `npm ci` (only when dependencies are missing) and `npm run build -- --outDir static/admin --emptyOutDir` (requires Node.js). You can also build manually: `./scripts/build-webui.sh`
 
@@ -191,7 +191,7 @@ Default URL: `http://localhost:5001`
 cp .env.example .env
 cp config.example.json config.json
 
-# 2. Edit .env (at least set DS2API_ADMIN_KEY)
+# 2. Edit .env (at least set DS2API_ADMIN_KEY; optionally set DS2API_HOST_PORT to change the host port)
 #    DS2API_ADMIN_KEY=replace-with-a-strong-secret
 
 # 3. Start
@@ -201,7 +201,7 @@ docker-compose up -d
 docker-compose logs -f
 ```
 
-The default `docker-compose.yml` maps host port `6011` to container port `5001`. If you want `5001` exposed directly, adjust the `ports` mapping.
+The default `docker-compose.yml` maps host port `6011` to container port `5001`. If you want `5001` exposed directly, set `DS2API_HOST_PORT=5001` (or adjust the `ports` mapping).
 
 Rebuild after updates: `docker-compose up -d --build`
 
@@ -290,7 +290,8 @@ cp opencode.json.example opencode.json
     "o3": "deepseek-reasoner"
   },
   "compat": {
-    "wide_input_strict_output": true
+    "wide_input_strict_output": true,
+    "strip_reference_markers": true
   },
   "responses": {
     "store_ttl_seconds": 900
@@ -312,7 +313,7 @@ cp opencode.json.example opencode.json
     "token_refresh_interval_hours": 6
   },
   "auto_delete": {
-    "sessions": false
+    "mode": "none"
   }
 }
 ```
@@ -322,13 +323,14 @@ cp opencode.json.example opencode.json
 - `token`: Even if set in `config.json`, it is cleared during load (DS2API does not read persisted tokens from config); runtime tokens are maintained/refreshed in memory only
 - `model_aliases`: Map common model names (GPT/Codex/Claude) to DeepSeek models
 - `compat.wide_input_strict_output`: Keep `true` (current default policy)
-- `toolcall`: Fixed to feature matching + high-confidence early emit, no longer configurable
+- `compat.strip_reference_markers`: Keep `true`; it strips reference markers from visible output
+- `toolcall`: Legacy field; the current behavior is fixed to feature matching + high-confidence early emit, and any config value is ignored
 - `responses.store_ttl_seconds`: In-memory TTL for `/v1/responses/{id}`
 - `embeddings.provider`: Embeddings provider (`deterministic/mock/builtin` built-in)
 - `claude_mapping`: Maps `fast`/`slow` suffixes to corresponding DeepSeek models (still compatible with `claude_model_mapping`)
 - `admin`: Admin panel settings (JWT expiry, password hash, etc.), hot-reloadable via Admin Settings API
 - `runtime`: Runtime parameters (concurrency limits, queue sizes, managed token refresh interval), hot-reloadable via Admin Settings API; `account_max_queue=0`/`global_max_inflight=0` means auto-calculate from recommended values, `token_refresh_interval_hours=6` is the default forced re-login interval
-- `auto_delete.sessions`: Whether to auto-delete DeepSeek sessions after request completion (default `false`, hot-reloadable via Settings)
+- `auto_delete.mode`: How to clean up DeepSeek remote chat records after each request completes. Supported values: `none` (default, no deletion), `single` (delete only the current session), `all` (delete all sessions); legacy `auto_delete.sessions=true` is still treated as `all`
 
 ### Environment Variables
 
@@ -341,17 +343,13 @@ cp opencode.json.example opencode.json
 | `DS2API_JWT_EXPIRE_HOURS` | Admin JWT TTL in hours | `24` |
 | `DS2API_CONFIG_PATH` | Config file path | `config.json` |
 | `DS2API_CONFIG_JSON` | Inline config (JSON or Base64) | — |
-| `CONFIG_JSON` | Legacy compatibility config input | — |
 | `DS2API_ENV_WRITEBACK` | Auto-write env-backed config to file and transition to file mode (`1/true/yes/on`) | Disabled |
 | `DS2API_WASM_PATH` | PoW WASM file path | Auto-detect |
 | `DS2API_STATIC_ADMIN_DIR` | Admin static assets dir | `static/admin` |
 | `DS2API_AUTO_BUILD_WEBUI` | Auto-build WebUI on startup | Enabled locally, disabled on Vercel |
 | `DS2API_ACCOUNT_MAX_INFLIGHT` | Max in-flight requests per account | `2` |
-| `DS2API_ACCOUNT_CONCURRENCY` | Alias (legacy compat) | — |
 | `DS2API_ACCOUNT_MAX_QUEUE` | Waiting queue limit | `recommended_concurrency` |
-| `DS2API_ACCOUNT_QUEUE_SIZE` | Alias (legacy compat) | — |
 | `DS2API_GLOBAL_MAX_INFLIGHT` | Global max in-flight requests | `recommended_concurrency` |
-| `DS2API_MAX_INFLIGHT` | Alias (legacy compat) | — |
 | `DS2API_VERCEL_INTERNAL_SECRET` | Vercel hybrid streaming internal auth | Falls back to `DS2API_ADMIN_KEY` |
 | `DS2API_VERCEL_STREAM_LEASE_TTL_SECONDS` | Stream lease TTL seconds | `900` |
 | `DS2API_DEV_PACKET_CAPTURE` | Local dev packet capture switch (record recent request/response bodies) | Enabled by default on non-Vercel local runtime |
@@ -362,7 +360,7 @@ cp opencode.json.example opencode.json
 | `VERCEL_TEAM_ID` | Vercel team ID | — |
 | `DS2API_VERCEL_PROTECTION_BYPASS` | Vercel deployment protection bypass for internal Node→Go calls | — |
 
-> Note: when `DS2API_CONFIG_JSON/CONFIG_JSON` is detected, the Admin UI shows mode risk and auto-persistence status (including `DS2API_CONFIG_PATH` and mode-transition hints).
+> Note: when `DS2API_CONFIG_JSON` is detected, the Admin UI shows mode risk and auto-persistence status (including `DS2API_CONFIG_PATH` and mode-transition hints).
 
 ## Authentication Modes
 
@@ -449,6 +447,7 @@ ds2api/
 │   ├── deepseek/            # DeepSeek API client, PoW WASM
 │   ├── js/                  # Node runtime stream/compat logic
 │   ├── devcapture/          # Dev packet capture module
+│   ├── rawsample/           # Visible-text extraction and replay helpers for raw stream samples
 │   ├── format/              # Output formatting
 │   ├── prompt/              # Prompt construction
 │   ├── server/              # HTTP routing and middleware (chi router)
@@ -470,6 +469,7 @@ ds2api/
 ├── tests/
 │   ├── compat/              # Compatibility fixtures and expected outputs
 │   ├── node/                # Node-side unit tests (chat-stream / tool-sieve)
+│   ├── raw_stream_samples/  # Raw SSE samples and replay metadata
 │   └── scripts/             # Unified test script entrypoints (unit/e2e)
 ├── docs/                    # Deployment / contributing / testing docs
 ├── static/admin/            # WebUI build output (not committed to Git)

VERSION

@@ -1 +1 @@
-3.0.0
+3.1.0

app/handler.go

@@ -3,9 +3,17 @@ package app
 import (
 	"net/http"
 
+	"ds2api/internal/config"
 	"ds2api/internal/server"
 )
 
 func NewHandler() http.Handler {
-	return server.NewApp().Router
+	app, err := server.NewApp()
+	if err != nil {
+		config.Logger.Error("[app] init failed", "error", err)
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			server.WriteUnhandledError(w, err)
+		})
+	}
+	return app.Router
 }

cmd/ds2api/main.go

@@ -18,9 +18,17 @@ import (
 )
 
 func main() {
+	if err := config.LoadDotEnv(); err != nil {
+		config.Logger.Warn("[dotenv] load failed", "error", err)
+	}
+	config.RefreshLogger()
 	webui.EnsureBuiltOnStartup()
 	_ = auth.AdminKey()
-	app := server.NewApp()
+	app, err := server.NewApp()
+	if err != nil {
+		config.Logger.Error("server initialization failed", "error", err)
+		os.Exit(1)
+	}
 	port := strings.TrimSpace(os.Getenv("PORT"))
 	if port == "" {
 		port = "5001"

config.example.json

@@ -28,11 +28,8 @@
     "o3": "deepseek-reasoner"
   },
   "compat": {
-    "wide_input_strict_output": true
-  },
-  "toolcall": {
-    "mode": "feature_match",
-    "early_emit_confidence": "high"
+    "wide_input_strict_output": true,
+    "strip_reference_markers": true
   },
   "responses": {
     "store_ttl_seconds": 900
@@ -50,9 +47,10 @@
   "runtime": {
     "account_max_inflight": 2,
     "account_max_queue": 0,
-    "global_max_inflight": 0
+    "global_max_inflight": 0,
+    "token_refresh_interval_hours": 6
   },
   "auto_delete": {
-    "sessions": false
+    "mode": "none"
   }
 }

docker-compose.dev.yml

@@ -16,7 +16,8 @@ services:
     container_name: ds2api-dev
     command: ["go", "run", "./cmd/ds2api"]
     ports:
-      - "${PORT:-5001}:${PORT:-5001}"
+      # Host port is configurable via DS2API_HOST_PORT; container port stays fixed at 5001.
+      - "${DS2API_HOST_PORT:-6011}:5001"
     env_file:
       - .env
     environment:

docker-compose.yml

@@ -1,14 +1,16 @@
 services:
   ds2api:
     image: ghcr.io/cjackhwang/ds2api:latest
-    container_name: ds2api
-    restart: always
-    ports:
-      - "6011:5001"
-    volumes:
-      - ./config.json:/app/config.json    # 配置文件
-      - ./.env:/app/.env                  # 环境变量
-    environment:
-      - TZ=Asia/Shanghai
-      - LOG_LEVEL=INFO
-      - DS2API_ADMIN_KEY=${DS2API_ADMIN_KEY:-ds2api}
+    container_name: ds2api
+    restart: always
+    env_file:
+      - .env
+    ports:
+      # Host port is configurable via DS2API_HOST_PORT; container port stays fixed at 5001.
+      - "${DS2API_HOST_PORT:-6011}:5001"
+    volumes:
+      - ./config.json:/app/config.json    # 配置文件
+    environment:
+      - TZ=Asia/Shanghai
+      - LOG_LEVEL=INFO
+      - DS2API_ADMIN_KEY=${DS2API_ADMIN_KEY:-ds2api}

docs/CONTRIBUTING.en.md

@@ -9,7 +9,7 @@ Thanks for your interest in contributing to DS2API!
 ### Prerequisites
 
 - Go 1.26+
-- Node.js 20+ (for WebUI development)
+- Node.js `20.19+` or `22.12+` (for WebUI development)
 - npm (bundled with Node.js)
 
 ### Backend Development
@@ -25,7 +25,8 @@ cp config.example.json config.json
 
 # 3. Run backend
 go run ./cmd/ds2api
-# Default: http://localhost:5001
+# Local access: http://127.0.0.1:5001
+# Actual bind: 0.0.0.0:5001, so LAN access is available via your private IP
 ```
 
 ### Frontend Development (WebUI)

docs/CONTRIBUTING.md

@@ -9,7 +9,7 @@
 ### 前置要求
 
 - Go 1.26+
-- Node.js 20+（WebUI 开发时）
+- Node.js `20.19+` 或 `22.12+`（WebUI 开发时）
 - npm（随 Node.js 提供）
 
 ### 后端开发
@@ -25,7 +25,8 @@ cp config.example.json config.json
 
 # 3. 启动后端
 go run ./cmd/ds2api
-# 默认监听 http://localhost:5001
+# 本地访问 http://127.0.0.1:5001
+# 实际绑定 0.0.0.0:5001，可通过局域网 IP 访问
 ```
 
 ### 前端开发（WebUI）

docs/DEPLOY.en.md

@@ -25,14 +25,13 @@ This guide covers all deployment methods for the current Go-based codebase.
 | Dependency | Minimum Version | Notes |
 | --- | --- | --- |
 | Go | 1.26+ | Build backend |
-| Node.js | 20+ | Only needed to build WebUI locally |
+| Node.js | `20.19+` or `22.12+` | Only needed to build WebUI locally |
 | npm | Bundled with Node.js | Install WebUI dependencies |
 
 Config source (choose one):
 
 - **File**: `config.json` (recommended for local/Docker)
 - **Environment variable**: `DS2API_CONFIG_JSON` (recommended for Vercel; supports raw JSON or Base64)
-- Compatibility note: `CONFIG_JSON` is the legacy fallback variable; `DS2API_CONFIG_JSON` may also contain raw JSON directly
 
 Unified recommendation (best practice):
 
@@ -117,6 +116,8 @@ cp config.example.json config.json
 
 # Edit .env and set at least:
 #   DS2API_ADMIN_KEY=your-admin-key
+# Optionally set the host port:
+#   DS2API_HOST_PORT=6011
 
 # Start
 docker-compose up -d
@@ -125,7 +126,7 @@ docker-compose up -d
 docker-compose logs -f
 ```
 
-The default `docker-compose.yml` maps host port `6011` to container port `5001`. If you want `5001` exposed directly, adjust the `ports` mapping.
+The default `docker-compose.yml` maps host port `6011` to container port `5001`. If you want `5001` exposed directly, set `DS2API_HOST_PORT=5001` (or adjust the `ports` mapping).
 
 ### 2.2 Update
 
@@ -138,7 +139,7 @@ docker-compose up -d --build
 The `Dockerfile` now provides two image paths:
 
 1. **Default local/dev path (`runtime-from-source`)**: a three-stage build (WebUI build + Go build + runtime).
-2. **Release path (`runtime-from-dist`)**: CI first creates `dist/ds2api_<tag>_linux_<arch>.tar.gz`, then Docker directly reuses the binary and `static/admin` assets from those release archives, without running `npm build`/`go build` again.
+2. **Release path (`runtime-from-dist`)**: the release workflow first creates tag-named release archives, then copies the Linux bundles to `dist/docker-input/linux_amd64.tar.gz` / `linux_arm64.tar.gz`; Docker consumes those prepared inputs directly, without rerunning `npm build`/`go build`.
 
 The release path keeps Docker images aligned with release archives and reduces duplicate build work.
 
@@ -198,10 +199,10 @@ Notes:
 2. **Import** the project on Vercel
 3. **Set environment variables** (minimum required: one variable):
 
-   | Variable | Description |
-   | --- | --- |
-   | `DS2API_ADMIN_KEY` | Admin key (required) |
-   | `DS2API_CONFIG_JSON` | Config content, raw JSON or Base64 (optional, recommended) |
+| Variable | Description |
+| --- | --- |
+| `DS2API_ADMIN_KEY` | Admin key (required) |
+| `DS2API_CONFIG_JSON` | Config content, raw JSON or Base64 (optional, recommended) |
 
 4. **Deploy**
 
@@ -244,11 +245,8 @@ VERCEL_TEAM_ID=team_xxxxxxxxxxxx   # optional for personal accounts
 | Variable | Description | Default |
 | --- | --- | --- |
 | `DS2API_ACCOUNT_MAX_INFLIGHT` | Per-account inflight limit | `2` |
-| `DS2API_ACCOUNT_CONCURRENCY` | Alias (legacy compat) | — |
 | `DS2API_ACCOUNT_MAX_QUEUE` | Waiting queue limit | `recommended_concurrency` |
-| `DS2API_ACCOUNT_QUEUE_SIZE` | Alias (legacy compat) | — |
 | `DS2API_GLOBAL_MAX_INFLIGHT` | Global inflight limit | `recommended_concurrency` |
-| `DS2API_MAX_INFLIGHT` | Alias (legacy compat) | — |
 | `DS2API_ENV_WRITEBACK` | When `DS2API_CONFIG_JSON` is present, auto-write to `DS2API_CONFIG_PATH` and switch to file-backed mode after success (`1/true/yes/on`) | Disabled |
 | `DS2API_VERCEL_INTERNAL_SECRET` | Hybrid streaming internal auth | Falls back to `DS2API_ADMIN_KEY` |
 | `DS2API_VERCEL_STREAM_LEASE_TTL_SECONDS` | Stream lease TTL | `900` |
@@ -314,7 +312,7 @@ Error: Command failed: go build -ldflags -s -w -o .../bootstrap ...
 1. Open Vercel Project Settings → Build and Development Settings
 2. **Clear** custom Go Build Flags / Build Command (recommended)
 3. If ldflags must be used, set `-ldflags="-s -w"` (ensure it's one argument)
-4. Verify `go.mod` uses a supported version (currently `go 1.24`)
+4. Verify `go.mod` uses a supported version (currently `go 1.26.0`)
 5. Redeploy (recommended: clear cache)
 
 #### Internal Package Import Error

docs/DEPLOY.md

@@ -25,14 +25,13 @@
 | 依赖 | 最低版本 | 说明 |
 | --- | --- | --- |
 | Go | 1.26+ | 编译后端 |
-| Node.js | 20+ | 仅在需要本地构建 WebUI 时 |
+| Node.js | `20.19+` 或 `22.12+` | 仅在需要本地构建 WebUI 时 |
 | npm | 随 Node.js 提供 | 安装 WebUI 依赖 |
 
 配置来源（任选其一）：
 
 - **文件方式**：`config.json`（推荐本地/Docker 使用）
-- **环境变量方式**：`DS2API_CONFIG_JSON`（推荐 Vercel 使用，支持 JSON 字符串或 Base64 编码）
-- 兼容写法：`CONFIG_JSON` 是旧版回退变量；`DS2API_CONFIG_JSON` 也可以直接写原始 JSON
+- **环境变量方式**：`DS2API_CONFIG_JSON`（推荐 Vercel 使用，支持 JSON 字符串或 Base64 编码，也可以直接写原始 JSON）
 
 统一建议（最优实践）：
 
@@ -117,6 +116,8 @@ cp config.example.json config.json
 
 # 编辑 .env（请改成你的强密码），至少设置：
 #   DS2API_ADMIN_KEY=your-admin-key
+# 如需修改宿主机端口，可额外设置：
+#   DS2API_HOST_PORT=6011
 
 # 启动
 docker-compose up -d
@@ -125,7 +126,7 @@ docker-compose up -d
 docker-compose logs -f
 ```
 
-默认 `docker-compose.yml` 会把宿主机 `6011` 映射到容器内的 `5001`。如果你希望直接对外暴露 `5001`，请调整 `ports` 配置。
+默认 `docker-compose.yml` 会把宿主机 `6011` 映射到容器内的 `5001`。如果你希望直接对外暴露 `5001`，请设置 `DS2API_HOST_PORT=5001`（或者手动调整 `ports` 配置）。
 
 ### 2.2 更新
 
@@ -138,7 +139,7 @@ docker-compose up -d --build
 `Dockerfile` 提供两条构建路径：
 
 1. **本地/开发默认路径（`runtime-from-source`）**：三阶段构建（WebUI 构建 + Go 构建 + 运行阶段）。
-2. **Release 路径（`runtime-from-dist`）**：CI 先生成 `dist/ds2api_<tag>_linux_<arch>.tar.gz`，再由 Docker 直接复用该发布包内的二进制和 `static/admin` 产物组装运行镜像，不再重复执行 `npm build`/`go build`。
+2. **Release 路径（`runtime-from-dist`）**：发布工作流先生成 tag 命名的 Release 压缩包，再把 Linux 产物复制成 `dist/docker-input/linux_amd64.tar.gz` / `linux_arm64.tar.gz`；Docker 构建阶段直接消费这些输入，不再重复执行 `npm build`/`go build`。
 
 Release 路径可确保 Docker 镜像与 release 压缩包使用同一套产物，减少重复构建带来的差异。
 
@@ -198,10 +199,10 @@ healthcheck:
 2. **在 Vercel 上导入项目**
 3. **配置环境变量**（最少只需设置以下一项）：
 
-   | 变量 | 说明 |
-   | --- | --- |
-   | `DS2API_ADMIN_KEY` | 管理密钥（必填） |
-   | `DS2API_CONFIG_JSON` | 配置内容，JSON 字符串或 Base64 编码（可选，建议） |
+| 变量 | 说明 |
+| --- | --- |
+| `DS2API_ADMIN_KEY` | 管理密钥（必填） |
+| `DS2API_CONFIG_JSON` | 配置内容，JSON 字符串或 Base64 编码（可选，建议） |
 
 4. **部署**
 
@@ -244,11 +245,8 @@ VERCEL_TEAM_ID=team_xxxxxxxxxxxx   # 个人账号可留空
 | 变量 | 说明 | 默认值 |
 | --- | --- | --- |
 | `DS2API_ACCOUNT_MAX_INFLIGHT` | 每账号并发上限 | `2` |
-| `DS2API_ACCOUNT_CONCURRENCY` | 同上（兼容别名） | — |
 | `DS2API_ACCOUNT_MAX_QUEUE` | 等待队列上限 | `recommended_concurrency` |
-| `DS2API_ACCOUNT_QUEUE_SIZE` | 同上（兼容别名） | — |
 | `DS2API_GLOBAL_MAX_INFLIGHT` | 全局并发上限 | `recommended_concurrency` |
-| `DS2API_MAX_INFLIGHT` | 同上（兼容别名） | — |
 | `DS2API_ENV_WRITEBACK` | 检测到 `DS2API_CONFIG_JSON` 时自动写入 `DS2API_CONFIG_PATH`，并在成功后转为文件模式（`1/true/yes/on`） | 关闭 |
 | `DS2API_VERCEL_INTERNAL_SECRET` | 混合流式内部鉴权 | 回退用 `DS2API_ADMIN_KEY` |
 | `DS2API_VERCEL_STREAM_LEASE_TTL_SECONDS` | 流式 lease TTL | `900` |
@@ -314,7 +312,7 @@ Error: Command failed: go build -ldflags -s -w -o .../bootstrap ...
 1. 进入 Vercel Project Settings → Build and Development Settings
 2. **清空**自定义 Go Build Flags / Build Command（推荐）
 3. 若必须设置 ldflags，使用 `-ldflags="-s -w"`（保证它是一个参数）
-4. 确认仓库 `go.mod` 为受支持版本（当前为 `go 1.24`）
+4. 确认仓库 `go.mod` 为受支持版本（当前为 `go 1.26.0`）
 5. 重新部署（建议清缓存后 Redeploy）
 
 #### Internal 包导入错误

docs/DeepSeekSSE流格式字段分析-2026-04-03.md

@@ -1,82 +0,0 @@
-# DeepSeek SSE 流格式字段分析（2026-04-03）
-
-> 日期：2026-04-03（UTC）
-> 
-> 样本：`tests/raw_stream_samples/guangzhou-weather-reasoner-search-20260403/upstream.stream.sse`
-> 
-> 模型：`deepseek-reasoner-search`（搜索 + 思考）
-
-## 1. SSE 事件层结构
-
-原始流由标准 SSE 帧组成，常见形态：
-
-```text
-event: <type>
-data: <json or text>
-
-```
-
-样本中主要 `event` 类型：
-
-- `ready`：流建立后返回请求/响应消息 ID。
-- `update_session`：会话时间戳更新。
-- `finish`：流式阶段结束。
-- （无 `event` 时）默认为 message 事件，`data:` 中承载主要增量数据。
-
-## 2. `data` JSON 常见字段
-
-上游增量主体多为 JSON Patch 风格对象：
-
-- `p`（path）：字段路径，如 `response/fragments/-1/content`。
-- `o`（op，可选）：操作类型，常见 `SET` / `APPEND` / `BATCH`。
-- `v`（value）：值（字符串、布尔、对象、数组都可能）。
-
-示例（语义）：
-
-- `{"p":"response/fragments/-1/content","o":"APPEND","v":"..."}`
-- `{"p":"response/fragments/-16/status","v":"FINISHED"}`
-- `{"p":"response/status","o":"SET","v":"FINISHED"}`
-
-## 3. 搜索+思考场景关键路径
-
-### 3.1 文本内容
-
-- `response/fragments/<idx>/content`
-- `response/content`
-- `response/thinking_content`
-- `response/fragments`（`APPEND` + fragment 数组）
-
-### 3.2 搜索相关
-
-- `response/fragments/<idx>/results`（检索结果数组）
-- `response/search_status`（检索状态，建议跳过展示）
-
-### 3.3 状态相关（重点）
-
-- `response/status = FINISHED`：**最终结束信号**（需要保留用于结束判定）
-- `response/fragments/<idx>/status = FINISHED`：**分片级状态**（高频，建议跳过输出）
-- `response/quasi_status`：过程状态（建议跳过输出）
-
-## 4. 泄露问题根因（FINISHED 重复）
-
-在搜索 + 思考模型中，`response/fragments/<idx>/status` 会出现大量不同 `<idx>`（例如 `-1/-2/-3/-16...`）的 `FINISHED`。
-
-若只过滤固定少量索引（例如仅 `-1/-2/-3`），其他索引的状态会当普通文本透传，导致前端出现：
-
-- `FINISHEDFINISHEDFINISHED...`
-
-## 5. 适配建议（已落地）
-
-1. 跳过所有 `response/fragments/-?\d+/status`。
-2. 继续保留 `response/status=FINISHED` 作为真正结束判定。
-3. 通过独立仿真工具持续回放全部样本，作为回归门禁：
-
-```bash
-./tests/scripts/run-raw-stream-sim.sh
-```
-
-## 6. 后续扩展建议
-
-- 增加不同模型（`deepseek-chat-search` / 非 search / 非 thinking）样本。
-- 增加异常样本（限流、中断、content_filter、空结果）。
-- 为仿真报告加入字段覆盖率统计（路径频次、事件频次、终止路径命中率）。

docs/DeepSeekSSE行为结构说明-2026-04-05.md

@@ -0,0 +1,313 @@
+# DeepSeek SSE 行为结构说明（第三方逆向版）
+
+> 说明：本文基于当前仓库 `tests/raw_stream_samples/` 下全部 `upstream.stream.sse` 原始流样本整理而成，属于第三方逆向观察文档，不是官方协议。
+> 当前 corpus 由 4 份原始流组成，覆盖搜索+引用、风控终态、Markdown 输出和空格敏感输出等行为。
+> 补充：文末还会注明少量“当前实现已确认、但 corpus 尚未完整覆盖”的行为，例如长思考场景下的自动续写状态。
+
+## 1. 样本覆盖
+
+下列样本共同构成了本文的观察基础：
+
+| 样本 | 观察重点 |
+| --- | --- |
+| [guangzhou-weather-reasoner-search-20260404](../tests/raw_stream_samples/guangzhou-weather-reasoner-search-20260404/upstream.stream.sse) | 搜索+思考流程，包含 `reference:N` 引用标记与工具片段 |
+| [content-filter-trigger-20260405-jwt3](../tests/raw_stream_samples/content-filter-trigger-20260405-jwt3/upstream.stream.sse) | `CONTENT_FILTER` 终态分支，包含拒答模板与 `ban_regenerate` |
+| [markdown-format-example-20260405](../tests/raw_stream_samples/markdown-format-example-20260405/upstream.stream.sse) | Markdown 输出的早期样本，用于观察 token 级输出形态 |
+| [markdown-format-example-20260405-spacefix](../tests/raw_stream_samples/markdown-format-example-20260405-spacefix/upstream.stream.sse) | Markdown 输出修正样本，用于验证空格 chunk 必须保留 |
+
+当前 corpus 的整体特征是 `message` 帧占绝对多数，控制事件只占很小一部分，但它们决定了流的生命周期和最终状态。
+
+## 2. 总体结构
+
+DeepSeek 的这类输出可以分成两层看：
+
+1. SSE 事件层。
+2. JSON 载荷层。
+
+事件层负责传输边界，载荷层负责业务状态。实现时不要把 HTTP chunk、SSE block 和业务 JSON 混为一体。
+
+最常见的时序可以概括为：
+
+```text
+ready
+update_session
+message(初始化 envelope)
+message(正文 / 片段 / 状态增量)
+message(状态收口)
+finish
+update_session
+title
+close
+```
+
+`finish` 表示生成流结束，但不是唯一的终止信号；真正的语义终态通常还要结合 `response/status`、`quasi_status` 和 `close` 一起判断。
+
+## 3. SSE 事件层
+
+当前 corpus 中观察到的事件类型如下：
+
+| 事件 | 作用 | 处理建议 |
+| --- | --- | --- |
+| `ready` | 传输层就绪，通常携带 `request_message_id`、`response_message_id`、`model_type` | 记录元数据即可，不参与正文拼接 |
+| `update_session` | 会话时间戳或心跳更新 | 当作会话状态帧处理 |
+| `message` | 主体载荷，绝大多数业务信息都在这里 | 必须按顺序解析并保序累积 |
+| `finish` | 生成阶段结束 | 作为流结束标记之一 |
+| `title` | 会话标题生成结果 | 元数据帧，不参与正文拼接 |
+| `close` | 连接关闭信息 | 仅用于收尾与审计 |
+
+说明：
+
+- `message` 是默认事件名，SSE 中没有显式 `event:` 时也应按 `message` 处理。
+- 目前样本里大量 `message` 帧没有独立的业务前缀，不能靠事件名区分正文和控制帧。
+- 可能出现空 payload 的 `message` 帧；它们应被视为 no-op，但不能打乱事件顺序。
+
+## 4. 载荷层形态
+
+`message` 的 `data:` 部分不是单一 schema，而是多种结构混合。当前 corpus 里主要见到以下几种形态：
+
+| 形态 | 典型结构 | 作用 |
+| --- | --- | --- |
+| 初始化 envelope | `{"v":{"response":{...}}}` | 给出会话初始状态、模型状态和片段容器 |
+| 纯文本 token | `{"v":"..."}` | 直接输出可见文本 token |
+| 路径补丁 | `{"p":"...","o":"APPEND|SET|BATCH","v":...}` | 对某个状态路径做增量更新 |
+| 终态 batch | `{"v":[{"p":"status","v":"CONTENT_FILTER"}, ...]}` | 尾部状态收口，常见于风控终态 |
+
+一个简化后的典型样式如下：
+
+```json
+{"v":"输出"}
+{"p":"response/fragments/-1/content","o":"APPEND","v":"..."}
+{"p":"response/fragments","o":"APPEND","v":[...]}
+{"p":"response","o":"BATCH","v":[{"p":"accumulated_token_usage","v":211},{"p":"quasi_status","v":"FINISHED"}]}
+{"p":"response/status","o":"SET","v":"FINISHED"}
+```
+
+注意：
+
+- `v` 可能是字符串、对象、数组、布尔值或数字。
+- `o` 当前样本里主要见到 `APPEND`、`SET`、`BATCH`。
+- `v` 为数组时，通常表示一个批量 patch 集合，而不是正文数组。
+
+## 5. 初始化 envelope
+
+每条流开头，常会先出现一个 `message` 帧，内容是完整的 `response` 初始状态。当前 corpus 中，这个 envelope 常见字段包括：
+
+- `message_id`
+- `parent_id`
+- `model`
+- `role`
+- `thinking_enabled`
+- `ban_edit`
+- `ban_regenerate`
+- `status`
+- `incomplete_message`
+- `accumulated_token_usage`
+- `files`
+- `feedback`
+- `inserted_at`
+- `search_enabled`
+- `fragments`
+- `conversation_mode`
+- `has_pending_fragment`
+- `auto_continue`
+- `search_triggered`
+
+这些字段更像会话状态和策略开关，不是正文内容。第三方实现应把它们保留在内部状态树里，而不是直接拼接到最终答案。
+
+## 6. 路径结构
+
+当前 corpus 里观察到的 `p` 路径可以归成几组：
+
+### 6.1 片段级路径
+
+- `response/fragments/-N/content`
+- `response/fragments/-N/status`
+- `response/fragments/-N/results`
+- `response/fragments/-N/elapsed_secs`
+
+这类路径表示某个片段对象的增量更新。`-N` 只是样本中的索引风格，不应被写死成固定数量。
+
+### 6.2 片段容器路径
+
+- `response/fragments`
+- `fragments`
+
+这两类路径通常承载 fragment 数组。前者更像响应树中的分支，后者更像终态批处理里的片段集合。
+
+### 6.3 语义状态路径
+
+- `response/status`
+- `response/has_pending_fragment`
+- `quasi_status`
+- `status`
+- `ban_regenerate`
+
+这类路径决定流是否结束、是否被风控、是否还有待处理片段。它们不应作为正文输出。
+
+尤其是 `response/status` / `status` 这类路径上的字符串值，应被视为控制信号而不是文本 token。当前已确认需要特殊对待的值包括：
+
+- `FINISHED`：正常完成终态，应触发收口。
+- `CONTENT_FILTER`：风控终态，应走拒答/模板分支。
+- `WIP` / `INCOMPLETE` / `AUTO_CONTINUE`：未完成但可继续生成的中间状态，不应直接输出给客户端。
+
+### 6.4 统计与进度路径
+
+- `accumulated_token_usage`
+
+这类路径用于使用量或进度统计，属于元数据。
+
+### 6.5 非命名空间字段
+
+在片段对象内部，还会看到 `content`、`references`、`result`、`queries`、`stage_id` 等字段。它们不一定带 `response/...` 前缀，但仍然是协议语义的一部分。
+
+## 7. fragment 类型
+
+当前 corpus 里已经观察到的 fragment 类型如下：
+
+| 类型 | 作用 | 是否应直接渲染 |
+| --- | --- | --- |
+| `RESPONSE` | 正常回答片段 | 是，属于正文 |
+| `THINK` | 推理或阶段提示 | 通常否，按产品策略决定是否展示 |
+| `TOOL_SEARCH` | 搜索工具调用元数据 | 否 |
+| `TOOL_OPEN` | 打开 / 抽取结果的工具元数据 | 否 |
+| `TIP` | 提示 / 警告类片段，常带 `style: WARNING` | 视产品策略决定，通常作为附注 |
+| `TEMPLATE_RESPONSE` | 风控拒答模板 | 是，但它属于终态 fallback，不是普通正文 |
+
+观察到的典型片段字段：
+
+- `id`
+- `type`
+- `content`
+- `references`
+- `stage_id`
+- `status`
+- `queries`
+- `results`
+- `result`
+- `elapsed_secs`
+- `style`
+- `hide_on_wip`
+
+第三方实现不要把 `fragment.type` 和 `p` 路径混为一谈。`type` 是语义分类，`p` 是状态树位置。
+
+## 8. 终态行为
+
+当前 corpus 里有两条很重要的终态分支。
+
+### 8.1 正常完成
+
+正常回答通常会出现如下收口顺序：
+
+1. `response` 的 `BATCH` 更新 `accumulated_token_usage`。
+2. `response` 的 `BATCH` 或单独 patch 更新 `quasi_status: FINISHED`。
+3. `response/status` 置为 `FINISHED`。
+4. `finish` 事件到来。
+5. 之后可能还有 `update_session`、`title`、`close`。
+
+### 8.2 风控终态
+
+`content-filter-trigger-20260405-jwt3` 展示了另一种终态路径：
+
+1. 先继续输出一段正常正文。
+2. 出现提示类 fragment，例如 `TIP`。
+3. 可能先把 `quasi_status` 提前收口到 `FINISHED`。
+4. 之后出现一个终态 batch，把 `ban_regenerate` 设为 `true`，把 `status` 置为 `CONTENT_FILTER`，并附带 `TEMPLATE_RESPONSE`。
+5. 最后再出现 `finish`，然后是收尾事件。
+
+这个分支说明：
+
+- `finish` 不等于正常结束。
+- `CONTENT_FILTER` 是一个独立终态，不是普通异常。
+- `TEMPLATE_RESPONSE` 不应被当作常规回答流的中间片段，它是终态 fallback。
+
+一个简化的风控尾部可以写成：
+
+```json
+{"p":"response","o":"BATCH","v":[{"p":"accumulated_token_usage","v":1269},{"p":"quasi_status","v":"FINISHED"}]}
+{"v":[{"p":"ban_regenerate","v":true},{"p":"status","v":"CONTENT_FILTER"},{"p":"fragments","v":[{"id":38,"type":"TEMPLATE_RESPONSE","content":"..."}]},{"p":"quasi_status","v":"CONTENT_FILTER"}]}
+{"event":"finish"}
+```
+
+### 8.3 自动续写中间态（实现补充）
+
+这部分不是当前 corpus 的直接覆盖项，而是 2026-04-05 在长思考实测中观察到、且已在当前实现中兼容的行为：
+
+1. 上游可能先把 `response/status` 或 envelope 内的 `response.status` 置为 `WIP` / `INCOMPLETE`。
+2. 有时还会伴随 `auto_continue: true`。
+3. 这表示当前轮输出尚未真正结束，客户端或代理层可以继续调用 continue 接口续写同一条回答。
+4. 续写后的内容会承接之前的思考与正文，不应把前一轮状态值泄露成可见文本。
+
+对第三方实现，建议把这一类状态统一当作“可继续的控制信号”：
+
+- 可以据此决定是否继续拉取后续流。
+- 不能把 `INCOMPLETE`、`WIP`、`AUTO_CONTINUE` 直接拼接到最终文本。
+- `finish` 事件本身也不能单独说明回答已完全结束，仍要结合状态字段判断。
+
+## 9. 文本重建规则
+
+如果你的目标是把流重建成最终可见文本，必须遵守下面这些规则：
+
+- 按接收顺序逐个追加 token。
+- 不要对每个 `v` 做 `trim` 或 `TrimSpace`。
+- 不要丢弃只包含空格的 chunk。
+- 不要合并连续空格、换行或 Markdown 符号附近的空白。
+- 不要把 `[reference:N]` 视为协议元数据，它在当前 corpus 里就是正文的一部分。
+- 如果你要屏蔽引用标记，应当把它做成可配置的后处理，而不是在解析阶段硬删。
+- `response/status` / `status` 路径上的状态字符串不应进入正文，即使它们不是终态。
+
+这点对 Markdown、代码块、引用、表格都很关键。样本里已经证明，`#`、`-`、`>`、`|` 这类符号后面的空格必须原样保留，否则渲染结果会变形。
+
+## 10. 推荐实现方式
+
+对第三方开发者，建议把实现拆成三条线：
+
+1. 原始事件线：保留 SSE block 顺序、事件名和完整 JSON 载荷。
+2. 状态树线：维护 `response`、`fragments`、`status`、`quasi_status` 等结构。
+3. 可见文本线：只从明确应渲染的 token / fragment 中拼接最终文本。
+
+一个简单的处理顺序可以是：
+
+```text
+parse SSE block
+  -> 识别 event
+  -> 解析 JSON payload
+  -> 更新状态树
+  -> 识别 status / quasi_status / auto_continue 等控制信号
+  -> 判定是否有可见文本
+  -> 追加到输出缓冲
+  -> 遇到 WIP / INCOMPLETE / AUTO_CONTINUE 时决定是否续写
+  -> 遇到 FINISHED / CONTENT_FILTER / finish 时收口
+```
+
+实现时的兼容原则：
+
+- 未知路径保留，不要报错中断。
+- 未知 fragment.type 保留在日志里。
+- 不要假设所有模型都一定输出 `thinking_content`，当前 corpus 的推理更多是通过 fragment 类型表达。
+- 不要假设 `title` 一定存在，它只是后置元数据。
+
+## 11. 本 corpus 证明了什么
+
+当前样本足以证明以下行为：
+
+- 搜索类模型会把工具调用、结果、引用和正文混在同一条 SSE 流里。
+- 风控不会简单地“没有输出”，而是会在正常生成后切换到 `CONTENT_FILTER` 终态。
+- Markdown 和代码输出对空格非常敏感，空格 chunk 不能吞。
+- `message` 是主体承载层，`ready` / `update_session` / `finish` / `title` / `close` 是控制层。
+- `fragment.type` 是可视化和工具链分层的关键，不应只靠 `p` 路径判断。
+
+结合 2026-04-05 的长思考实测，还可以补充一条当前实现层面的结论：
+
+- 长思考场景下，上游可能先给出 `INCOMPLETE` / `WIP` / `AUTO_CONTINUE` 状态，再通过 continue 链路续写；这些状态值本身不应作为正文输出。
+
+## 12. 适用边界
+
+本文是基于当前 corpus 的逆向说明，不是恒定协议。
+
+- 新模型可能增加新的 `p` 路径。
+- 新版本可能增加新的 fragment.type。
+- `CONTENT_FILTER` 的终态模板内容可能变化。
+- 自动续写相关状态（如 `INCOMPLETE` / `AUTO_CONTINUE`）当前主要来自实测与实现兼容逻辑，后续字段形态仍可能变化。
+- 解析器应当对未知字段、未知路径、未知事件保持容忍。
+
+如果你要把这份说明用于实际开发，建议同时保留原始流样本、回放脚本和回归测试，不要只依赖本文。

docs/TESTING.md

@@ -233,9 +233,32 @@ go run ./cmd/ds2api-tests --no-preflight
 ```
 
 说明：
-- 该工具会重放 `tests/raw_stream_samples` 下全部样本，按上游 SSE 顺序做 1:1 仿真解析。
+- 该工具默认重放 `tests/raw_stream_samples/manifest.json` 声明的 canonical 样本，按上游 SSE 顺序做 1:1 仿真解析。
 - 默认校验不出现 `FINISHED` 文本泄露，并要求存在结束信号。
-- 结果会写入 `artifacts/raw-stream-sim/*.json`，可供其他测试脚本或排障流程复用。
+- 每次运行都会把本地派生结果写入 `artifacts/raw-stream-sim/<run-id>/<sample-id>/replay.output.txt`，并输出结构化报告。
+- 如果你有历史基线目录，可以通过 `--baseline-root` 让工具直接做文本对比。
+- 更完整的协议级行为结构说明见 [DeepSeekSSE行为结构说明-2026-04-05.md](./DeepSeekSSE行为结构说明-2026-04-05.md)。
+
+### 对单个样本做回放比对
+
+```bash
+./tests/scripts/compare-raw-stream-sample.sh markdown-format-example-20260405-spacefix
+```
+
+说明：
+- 该脚本会从 raw-only 样本目录读取 `upstream.stream.sse`。
+- 回放结果会写入 `artifacts/raw-stream-sim/<run-id>/<sample-id>/`，便于直接查阅。
+- 如果传入历史基线目录，脚本会自动对比当前回放输出和基线文本。
+
+### 采集永久样本
+
+本地启动服务后，可以直接打：
+
+```bash
+POST /admin/dev/raw-samples/capture
+```
+
+这个接口会把请求元信息和上游原始流写入 `tests/raw_stream_samples/<sample-id>/`，以后可以直接拿来做回放和字段分析。派生输出会在本地回放时再生成，不再落在样本目录里。
 
 ### 指定输出目录和超时
 

go.mod

@@ -3,23 +3,23 @@ module ds2api
 go 1.26.0
 
 require (
-	github.com/andybalholm/brotli v1.0.6
-	github.com/go-chi/chi/v5 v5.2.3
+	github.com/andybalholm/brotli v1.2.1
+	github.com/go-chi/chi/v5 v5.2.5
 	github.com/google/uuid v1.6.0
 	github.com/refraction-networking/utls v1.8.2
-	github.com/tetratelabs/wazero v1.9.0
+	github.com/router-for-me/CLIProxyAPI/v6 v6.9.14
+	github.com/tetratelabs/wazero v1.11.0
 )
 
 require (
-	github.com/klauspost/compress v1.17.4 // indirect
-	github.com/router-for-me/CLIProxyAPI/v6 v6.9.8 // indirect
-	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/klauspost/compress v1.18.5 // indirect
+	github.com/sirupsen/logrus v1.9.4 // indirect
 	github.com/tidwall/gjson v1.18.0 // indirect
-	github.com/tidwall/match v1.1.1 // indirect
-	github.com/tidwall/pretty v1.2.0 // indirect
+	github.com/tidwall/match v1.2.0 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
 	github.com/tidwall/sjson v1.2.5 // indirect
-	golang.org/x/crypto v0.45.0 // indirect
-	golang.org/x/net v0.47.0 // indirect
-	golang.org/x/sys v0.38.0 // indirect
+	golang.org/x/crypto v0.49.0 // indirect
+	golang.org/x/net v0.52.0 // indirect
+	golang.org/x/sys v0.42.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,47 +1,45 @@
-github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
-github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/refraction-networking/utls v1.8.1 h1:yNY1kapmQU8JeM1sSw2H2asfTIwWxIkrMJI0pRUOCAo=
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 github.com/refraction-networking/utls v1.8.2 h1:j4Q1gJj0xngdeH+Ox/qND11aEfhpgoEvV+S9iJ2IdQo=
 github.com/refraction-networking/utls v1.8.2/go.mod h1:jkSOEkLqn+S/jtpEHPOsVv/4V4EVnelwbMQl4vCWXAM=
-github.com/router-for-me/CLIProxyAPI/v6 v6.9.8 h1:O65R38THenp8E1IK0paQlOfop3Y6UYlfqSdLlepidSY=
-github.com/router-for-me/CLIProxyAPI/v6 v6.9.8/go.mod h1:P1jsIPFXorYGuS2N/3BlZYkpRKi/z7+oR3+1tdG0u4k=
-github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
-github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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 github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
 github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY=
 github.com/tidwall/gjson v1.18.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
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 github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
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 github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
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 github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
 github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
-golang.org/x/crypto v0.36.0 h1:AnAEvhDddvBdpY+uR+MyHmuZzzNqXSe/GvuDeob5L34=
-golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
-golang.org/x/crypto v0.45.0 h1:jMBrvKuj23MTlT0bQEOBcAE0mjg8mK9RXFhRH6nyF3Q=
-golang.org/x/crypto v0.45.0/go.mod h1:XTGrrkGJve7CYK7J8PEww4aY7gM3qMCElcJQ8n8JdX4=
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-golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
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-golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
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+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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internal/account/pool_edge_test.go

@@ -13,9 +13,7 @@ import (
 
 func TestPoolEmptyNoAccounts(t *testing.T) {
 	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", "2")
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "")
 	t.Setenv("DS2API_ACCOUNT_MAX_QUEUE", "")
-	t.Setenv("DS2API_ACCOUNT_QUEUE_SIZE", "")
 	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[]}`)
 	pool := NewPool(config.LoadStore())
 	if _, ok := pool.Acquire("", nil); ok {
@@ -165,9 +163,7 @@ func TestPoolAcquireWaitTargetAccount(t *testing.T) {
 
 func TestPoolMaxQueueSizeOverride(t *testing.T) {
 	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", "1")
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "")
 	t.Setenv("DS2API_ACCOUNT_MAX_QUEUE", "5")
-	t.Setenv("DS2API_ACCOUNT_QUEUE_SIZE", "")
 	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[{"email":"acc1@example.com","token":"t1"}]}`)
 	pool := NewPool(config.LoadStore())
 	status := pool.Status()
@@ -176,19 +172,6 @@ func TestPoolMaxQueueSizeOverride(t *testing.T) {
 	}
 }
 
-func TestPoolQueueSizeAliasEnv(t *testing.T) {
-	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", "1")
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "")
-	t.Setenv("DS2API_ACCOUNT_MAX_QUEUE", "")
-	t.Setenv("DS2API_ACCOUNT_QUEUE_SIZE", "7")
-	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[{"email":"acc1@example.com","token":"t1"}]}`)
-	pool := NewPool(config.LoadStore())
-	status := pool.Status()
-	if got, ok := status["max_queue_size"].(int); !ok || got != 7 {
-		t.Fatalf("expected max_queue_size=7, got %#v", status["max_queue_size"])
-	}
-}
-
 func TestPoolMultipleAcquireReleaseCycles(t *testing.T) {
 	pool := newSingleAccountPoolForTest(t, "1")
 	for i := 0; i < 10; i++ {

internal/account/pool_limits.go

@@ -29,13 +29,8 @@ func (p *Pool) ApplyRuntimeLimits(maxInflightPerAccount, maxQueueSize, globalMax
 }
 
 func maxInflightFromEnv() int {
-	for _, key := range []string{"DS2API_ACCOUNT_MAX_INFLIGHT", "DS2API_ACCOUNT_CONCURRENCY"} {
-		raw := strings.TrimSpace(os.Getenv(key))
-		if raw == "" {
-			continue
-		}
-		n, err := strconv.Atoi(raw)
-		if err == nil && n > 0 {
+	if raw := strings.TrimSpace(os.Getenv("DS2API_ACCOUNT_MAX_INFLIGHT")); raw != "" {
+		if n, err := strconv.Atoi(raw); err == nil && n > 0 {
 			return n
 		}
 	}
@@ -53,13 +48,8 @@ func defaultRecommendedConcurrency(accountCount, maxInflightPerAccount int) int
 }
 
 func maxQueueFromEnv(defaultSize int) int {
-	for _, key := range []string{"DS2API_ACCOUNT_MAX_QUEUE", "DS2API_ACCOUNT_QUEUE_SIZE"} {
-		raw := strings.TrimSpace(os.Getenv(key))
-		if raw == "" {
-			continue
-		}
-		n, err := strconv.Atoi(raw)
-		if err == nil && n >= 0 {
+	if raw := strings.TrimSpace(os.Getenv("DS2API_ACCOUNT_MAX_QUEUE")); raw != "" {
+		if n, err := strconv.Atoi(raw); err == nil && n >= 0 {
 			return n
 		}
 	}

internal/account/pool_test.go

@@ -12,9 +12,7 @@ import (
 func newPoolForTest(t *testing.T, maxInflight string) *Pool {
 	t.Helper()
 	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", maxInflight)
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "")
 	t.Setenv("DS2API_ACCOUNT_MAX_QUEUE", "")
-	t.Setenv("DS2API_ACCOUNT_QUEUE_SIZE", "")
 	t.Setenv("DS2API_CONFIG_JSON", `{
 		"keys":["k1"],
 		"accounts":[
@@ -29,9 +27,7 @@ func newPoolForTest(t *testing.T, maxInflight string) *Pool {
 func newSingleAccountPoolForTest(t *testing.T, maxInflight string) *Pool {
 	t.Helper()
 	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", maxInflight)
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "")
 	t.Setenv("DS2API_ACCOUNT_MAX_QUEUE", "")
-	t.Setenv("DS2API_ACCOUNT_QUEUE_SIZE", "")
 	t.Setenv("DS2API_CONFIG_JSON", `{
 		"keys":["k1"],
 		"accounts":[{"email":"acc1@example.com","token":"token1"}]
@@ -170,9 +166,9 @@ func TestPoolStatusRecommendedConcurrencyRespectsOverride(t *testing.T) {
 	}
 }
 
-func TestPoolAccountConcurrencyAliasEnv(t *testing.T) {
-	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", "")
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "4")
+func TestPoolGlobalMaxInflightEnv(t *testing.T) {
+	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", "1")
+	t.Setenv("DS2API_GLOBAL_MAX_INFLIGHT", "4")
 	t.Setenv("DS2API_CONFIG_JSON", `{
 		"keys":["k1"],
 		"accounts":[
@@ -183,15 +179,15 @@ func TestPoolAccountConcurrencyAliasEnv(t *testing.T) {
 
 	pool := NewPool(config.LoadStore())
 	status := pool.Status()
-	if got, ok := status["max_inflight_per_account"].(int); !ok || got != 4 {
+	if got, ok := status["global_max_inflight"].(int); !ok || got != 4 {
+		t.Fatalf("unexpected global_max_inflight: %#v", status["global_max_inflight"])
+	}
+	if got, ok := status["max_inflight_per_account"].(int); !ok || got != 1 {
 		t.Fatalf("unexpected max_inflight_per_account: %#v", status["max_inflight_per_account"])
 	}
-	if got, ok := status["recommended_concurrency"].(int); !ok || got != 8 {
+	if got, ok := status["recommended_concurrency"].(int); !ok || got != 2 {
 		t.Fatalf("unexpected recommended_concurrency: %#v", status["recommended_concurrency"])
 	}
-	if got, ok := status["max_queue_size"].(int); !ok || got != 8 {
-		t.Fatalf("unexpected max_queue_size: %#v", status["max_queue_size"])
-	}
 }
 
 func TestPoolDropsLegacyTokenOnlyAccountOnLoad(t *testing.T) {
@@ -217,9 +213,7 @@ func TestPoolDropsLegacyTokenOnlyAccountOnLoad(t *testing.T) {
 
 func TestPoolAcquireRotatesIntoTokenlessAccounts(t *testing.T) {
 	t.Setenv("DS2API_ACCOUNT_MAX_INFLIGHT", "1")
-	t.Setenv("DS2API_ACCOUNT_CONCURRENCY", "")
 	t.Setenv("DS2API_ACCOUNT_MAX_QUEUE", "")
-	t.Setenv("DS2API_ACCOUNT_QUEUE_SIZE", "")
 	t.Setenv("DS2API_CONFIG_JSON", `{
 		"keys":["k1"],
 		"accounts":[

internal/adapter/claude/deps.go

@@ -22,6 +22,7 @@ type DeepSeekCaller interface {
 
 type ConfigReader interface {
 	ClaudeMapping() map[string]string
+	CompatStripReferenceMarkers() bool
 }
 
 type OpenAIChatRunner interface {

internal/adapter/claude/deps_injection_test.go

@@ -7,6 +7,7 @@ type mockClaudeConfig struct {
 }
 
 func (m mockClaudeConfig) ClaudeMapping() map[string]string { return m.m }
+func (mockClaudeConfig) CompatStripReferenceMarkers() bool  { return true }
 
 func TestNormalizeClaudeRequestUsesConfigInterfaceMapping(t *testing.T) {
 	req := map[string]any{

internal/adapter/claude/handler_messages.go

@@ -149,6 +149,7 @@ func (h *Handler) handleClaudeStreamRealtime(w http.ResponseWriter, r *http.Requ
 		messages,
 		thinkingEnabled,
 		searchEnabled,
+		h.compatStripReferenceMarkers(),
 		toolNames,
 	)
 	streamRuntime.sendMessageStart()

internal/adapter/claude/handler_routes.go

@@ -21,6 +21,13 @@ type Handler struct {
 	OpenAI OpenAIChatRunner
 }
 
+func (h *Handler) compatStripReferenceMarkers() bool {
+	if h == nil || h.Store == nil {
+		return true
+	}
+	return h.Store.CompatStripReferenceMarkers()
+}
+
 var (
 	claudeStreamPingInterval    = time.Duration(deepseek.KeepAliveTimeout) * time.Second
 	claudeStreamIdleTimeout     = time.Duration(deepseek.StreamIdleTimeout) * time.Second

internal/adapter/claude/output_clean.go

@@ -0,0 +1,13 @@
+package claude
+
+import textclean "ds2api/internal/textclean"
+
+func cleanVisibleOutput(text string, stripReferenceMarkers bool) string {
+	if text == "" {
+		return text
+	}
+	if stripReferenceMarkers {
+		text = textclean.StripReferenceMarkers(text)
+	}
+	return text
+}

internal/adapter/claude/proxy_vercel_test.go

@@ -16,6 +16,8 @@ func (s claudeProxyStoreStub) ClaudeMapping() map[string]string {
 	return s.mapping
 }
 
+func (claudeProxyStoreStub) CompatStripReferenceMarkers() bool { return true }
+
 type openAIProxyStub struct {
 	status int
 	body   string

internal/adapter/claude/stream_runtime_core.go

@@ -19,13 +19,14 @@ type claudeStreamRuntime struct {
 	toolNames []string
 	messages  []any
 
-	thinkingEnabled   bool
-	searchEnabled     bool
-	bufferToolContent bool
+	thinkingEnabled       bool
+	searchEnabled         bool
+	bufferToolContent     bool
+	stripReferenceMarkers bool
 
-	messageID string
-	thinking  strings.Builder
-	text      strings.Builder
+	messageID    string
+	thinking     strings.Builder
+	text         strings.Builder
 	outputTokens int
 
 	nextBlockIndex     int
@@ -45,21 +46,23 @@ func newClaudeStreamRuntime(
 	messages []any,
 	thinkingEnabled bool,
 	searchEnabled bool,
+	stripReferenceMarkers bool,
 	toolNames []string,
 ) *claudeStreamRuntime {
 	return &claudeStreamRuntime{
-		w:                  w,
-		rc:                 rc,
-		canFlush:           canFlush,
-		model:              model,
-		messages:           messages,
-		thinkingEnabled:    thinkingEnabled,
-		searchEnabled:      searchEnabled,
-		bufferToolContent:  len(toolNames) > 0,
-		toolNames:          toolNames,
-		messageID:          fmt.Sprintf("msg_%d", time.Now().UnixNano()),
-		thinkingBlockIndex: -1,
-		textBlockIndex:     -1,
+		w:                     w,
+		rc:                    rc,
+		canFlush:              canFlush,
+		model:                 model,
+		messages:              messages,
+		thinkingEnabled:       thinkingEnabled,
+		searchEnabled:         searchEnabled,
+		bufferToolContent:     len(toolNames) > 0,
+		stripReferenceMarkers: stripReferenceMarkers,
+		toolNames:             toolNames,
+		messageID:             fmt.Sprintf("msg_%d", time.Now().UnixNano()),
+		thinkingBlockIndex:    -1,
+		textBlockIndex:        -1,
 	}
 }
 
@@ -80,10 +83,11 @@ func (s *claudeStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 
 	contentSeen := false
 	for _, p := range parsed.Parts {
-		if p.Text == "" {
+		cleanedText := cleanVisibleOutput(p.Text, s.stripReferenceMarkers)
+		if cleanedText == "" {
 			continue
 		}
-		if p.Type != "thinking" && s.searchEnabled && sse.IsCitation(p.Text) {
+		if p.Type != "thinking" && s.searchEnabled && sse.IsCitation(cleanedText) {
 			continue
 		}
 		contentSeen = true
@@ -92,7 +96,7 @@ func (s *claudeStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 			if !s.thinkingEnabled {
 				continue
 			}
-			s.thinking.WriteString(p.Text)
+			s.thinking.WriteString(cleanedText)
 			s.closeTextBlock()
 			if !s.thinkingBlockOpen {
 				s.thinkingBlockIndex = s.nextBlockIndex
@@ -112,13 +116,13 @@ func (s *claudeStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 				"index": s.thinkingBlockIndex,
 				"delta": map[string]any{
 					"type":     "thinking_delta",
-					"thinking": p.Text,
+					"thinking": cleanedText,
 				},
 			})
 			continue
 		}
 
-		s.text.WriteString(p.Text)
+		s.text.WriteString(cleanedText)
 		if s.bufferToolContent {
 			if hasUnclosedCodeFence(s.text.String()) {
 				continue
@@ -144,7 +148,7 @@ func (s *claudeStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 			"index": s.textBlockIndex,
 			"delta": map[string]any{
 				"type": "text_delta",
-				"text": p.Text,
+				"text": cleanedText,
 			},
 		})
 	}

internal/adapter/claude/stream_runtime_finalize.go

@@ -43,7 +43,7 @@ func (s *claudeStreamRuntime) finalize(stopReason string) {
 	s.closeTextBlock()
 
 	finalThinking := s.thinking.String()
-	finalText := s.text.String()
+	finalText := cleanVisibleOutput(s.text.String(), s.stripReferenceMarkers)
 
 	if s.bufferToolContent {
 		detected := util.ParseStandaloneToolCalls(finalText, s.toolNames)
@@ -64,7 +64,7 @@ func (s *claudeStreamRuntime) finalize(stopReason string) {
 						"input": map[string]any{},
 					},
 				})
-				
+
 				inputBytes, _ := json.Marshal(tc.Input)
 				s.send("content_block_delta", map[string]any{
 					"type":  "content_block_delta",

internal/adapter/claude/stream_status_test.go

@@ -28,6 +28,8 @@ func (streamStatusClaudeStoreStub) ClaudeMapping() map[string]string {
 	}
 }
 
+func (streamStatusClaudeStoreStub) CompatStripReferenceMarkers() bool { return true }
+
 func captureClaudeStatusMiddleware(statuses *[]int) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

internal/adapter/gemini/deps.go

@@ -22,6 +22,7 @@ type DeepSeekCaller interface {
 
 type ConfigReader interface {
 	ModelAliases() map[string]string
+	CompatStripReferenceMarkers() bool
 }
 
 type OpenAIChatRunner interface {

internal/adapter/gemini/handler_generate.go

@@ -140,7 +140,15 @@ func (h *Handler) handleNonStreamGenerateContent(w http.ResponseWriter, resp *ht
 	}
 
 	result := sse.CollectStream(resp, thinkingEnabled, true)
-	writeJSON(w, http.StatusOK, buildGeminiGenerateContentResponse(model, finalPrompt, result.Thinking, result.Text, toolNames, result.OutputTokens))
+	stripReferenceMarkers := h.compatStripReferenceMarkers()
+	writeJSON(w, http.StatusOK, buildGeminiGenerateContentResponse(
+		model,
+		finalPrompt,
+		cleanVisibleOutput(result.Thinking, stripReferenceMarkers),
+		cleanVisibleOutput(result.Text, stripReferenceMarkers),
+		toolNames,
+		result.OutputTokens,
+	))
 }
 
 func buildGeminiGenerateContentResponse(model, finalPrompt, finalThinking, finalText string, toolNames []string, outputTokens int) map[string]any {
@@ -179,7 +187,7 @@ func buildGeminiUsage(finalPrompt, finalThinking, finalText string, outputTokens
 
 func buildGeminiPartsFromFinal(finalText, finalThinking string, toolNames []string) []map[string]any {
 	detected := util.ParseToolCalls(finalText, toolNames)
-	if len(detected) == 0 && strings.TrimSpace(finalThinking) != "" {
+	if len(detected) == 0 && finalThinking != "" {
 		detected = util.ParseToolCalls(finalThinking, toolNames)
 	}
 	if len(detected) > 0 {
@@ -196,7 +204,7 @@ func buildGeminiPartsFromFinal(finalText, finalThinking string, toolNames []stri
 	}
 
 	text := finalText
-	if strings.TrimSpace(text) == "" {
+	if text == "" {
 		text = finalThinking
 	}
 	return []map[string]any{{"text": text}}

internal/adapter/gemini/handler_routes.go

@@ -17,6 +17,13 @@ type Handler struct {
 	OpenAI OpenAIChatRunner
 }
 
+func (h *Handler) compatStripReferenceMarkers() bool {
+	if h == nil || h.Store == nil {
+		return true
+	}
+	return h.Store.CompatStripReferenceMarkers()
+}
+
 func RegisterRoutes(r chi.Router, h *Handler) {
 	r.Post("/v1beta/models/{model}:generateContent", h.GenerateContent)
 	r.Post("/v1beta/models/{model}:streamGenerateContent", h.StreamGenerateContent)

internal/adapter/gemini/handler_stream_runtime.go

@@ -27,7 +27,7 @@ func (h *Handler) handleStreamGenerateContent(w http.ResponseWriter, r *http.Req
 
 	rc := http.NewResponseController(w)
 	_, canFlush := w.(http.Flusher)
-	runtime := newGeminiStreamRuntime(w, rc, canFlush, model, finalPrompt, thinkingEnabled, searchEnabled, toolNames)
+	runtime := newGeminiStreamRuntime(w, rc, canFlush, model, finalPrompt, thinkingEnabled, searchEnabled, h.compatStripReferenceMarkers(), toolNames)
 
 	initialType := "text"
 	if thinkingEnabled {
@@ -57,13 +57,14 @@ type geminiStreamRuntime struct {
 	model       string
 	finalPrompt string
 
-	thinkingEnabled bool
-	searchEnabled   bool
-	bufferContent   bool
-	toolNames       []string
+	thinkingEnabled       bool
+	searchEnabled         bool
+	bufferContent         bool
+	stripReferenceMarkers bool
+	toolNames             []string
 
-	thinking strings.Builder
-	text     strings.Builder
+	thinking     strings.Builder
+	text         strings.Builder
 	outputTokens int
 }
 
@@ -75,18 +76,20 @@ func newGeminiStreamRuntime(
 	finalPrompt string,
 	thinkingEnabled bool,
 	searchEnabled bool,
+	stripReferenceMarkers bool,
 	toolNames []string,
 ) *geminiStreamRuntime {
 	return &geminiStreamRuntime{
-		w:               w,
-		rc:              rc,
-		canFlush:        canFlush,
-		model:           model,
-		finalPrompt:     finalPrompt,
-		thinkingEnabled: thinkingEnabled,
-		searchEnabled:   searchEnabled,
-		bufferContent:   len(toolNames) > 0,
-		toolNames:       toolNames,
+		w:                     w,
+		rc:                    rc,
+		canFlush:              canFlush,
+		model:                 model,
+		finalPrompt:           finalPrompt,
+		thinkingEnabled:       thinkingEnabled,
+		searchEnabled:         searchEnabled,
+		bufferContent:         len(toolNames) > 0,
+		stripReferenceMarkers: stripReferenceMarkers,
+		toolNames:             toolNames,
 	}
 }
 
@@ -113,20 +116,21 @@ func (s *geminiStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 
 	contentSeen := false
 	for _, p := range parsed.Parts {
-		if p.Text == "" {
+		cleanedText := cleanVisibleOutput(p.Text, s.stripReferenceMarkers)
+		if cleanedText == "" {
 			continue
 		}
-		if p.Type != "thinking" && s.searchEnabled && sse.IsCitation(p.Text) {
+		if p.Type != "thinking" && s.searchEnabled && sse.IsCitation(cleanedText) {
 			continue
 		}
 		contentSeen = true
 		if p.Type == "thinking" {
 			if s.thinkingEnabled {
-				s.thinking.WriteString(p.Text)
+				s.thinking.WriteString(cleanedText)
 			}
 			continue
 		}
-		s.text.WriteString(p.Text)
+		s.text.WriteString(cleanedText)
 		if s.bufferContent {
 			continue
 		}
@@ -136,7 +140,7 @@ func (s *geminiStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 					"index": 0,
 					"content": map[string]any{
 						"role":  "model",
-						"parts": []map[string]any{{"text": p.Text}},
+						"parts": []map[string]any{{"text": cleanedText}},
 					},
 				},
 			},
@@ -148,7 +152,7 @@ func (s *geminiStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Parse
 
 func (s *geminiStreamRuntime) finalize() {
 	finalThinking := s.thinking.String()
-	finalText := s.text.String()
+	finalText := cleanVisibleOutput(s.text.String(), s.stripReferenceMarkers)
 
 	if s.bufferContent {
 		parts := buildGeminiPartsFromFinal(finalText, finalThinking, s.toolNames)

internal/adapter/gemini/handler_test.go

@@ -17,7 +17,8 @@ import (
 
 type testGeminiConfig struct{}
 
-func (testGeminiConfig) ModelAliases() map[string]string { return nil }
+func (testGeminiConfig) ModelAliases() map[string]string   { return nil }
+func (testGeminiConfig) CompatStripReferenceMarkers() bool { return true }
 
 type testGeminiAuth struct {
 	a   *auth.RequestAuth
@@ -62,8 +63,8 @@ func (m testGeminiDS) CallCompletion(_ context.Context, _ *auth.RequestAuth, _ m
 }
 
 type geminiOpenAIErrorStub struct {
-	status int
-	body   string
+	status  int
+	body    string
 	headers map[string]string
 }
 
@@ -247,7 +248,7 @@ func TestStreamGenerateContentEmitsSSE(t *testing.T) {
 
 func TestGenerateContentOpenAIProxyErrorUsesGeminiEnvelope(t *testing.T) {
 	h := &Handler{
-		Store:  testGeminiConfig{},
+		Store: testGeminiConfig{},
 		OpenAI: geminiOpenAIErrorStub{
 			status: http.StatusUnauthorized,
 			body:   `{"error":{"message":"invalid api key"}}`,

internal/adapter/gemini/output_clean.go

@@ -0,0 +1,13 @@
+package gemini
+
+import textclean "ds2api/internal/textclean"
+
+func cleanVisibleOutput(text string, stripReferenceMarkers bool) string {
+	if text == "" {
+		return text
+	}
+	if stripReferenceMarkers {
+		text = textclean.StripReferenceMarkers(text)
+	}
+	return text
+}

internal/adapter/openai/chat_stream_runtime.go

@@ -22,8 +22,9 @@ type chatStreamRuntime struct {
 	finalPrompt  string
 	toolNames    []string
 
-	thinkingEnabled bool
-	searchEnabled   bool
+	thinkingEnabled       bool
+	searchEnabled         bool
+	stripReferenceMarkers bool
 
 	firstChunkSent       bool
 	bufferToolContent    bool
@@ -49,25 +50,27 @@ func newChatStreamRuntime(
 	finalPrompt string,
 	thinkingEnabled bool,
 	searchEnabled bool,
+	stripReferenceMarkers bool,
 	toolNames []string,
 	bufferToolContent bool,
 	emitEarlyToolDeltas bool,
 ) *chatStreamRuntime {
 	return &chatStreamRuntime{
-		w:                   w,
-		rc:                  rc,
-		canFlush:            canFlush,
-		completionID:        completionID,
-		created:             created,
-		model:               model,
-		finalPrompt:         finalPrompt,
-		toolNames:           toolNames,
-		thinkingEnabled:     thinkingEnabled,
-		searchEnabled:       searchEnabled,
-		bufferToolContent:   bufferToolContent,
-		emitEarlyToolDeltas: emitEarlyToolDeltas,
-		streamToolCallIDs:   map[int]string{},
-		streamToolNames:     map[int]string{},
+		w:                     w,
+		rc:                    rc,
+		canFlush:              canFlush,
+		completionID:          completionID,
+		created:               created,
+		model:                 model,
+		finalPrompt:           finalPrompt,
+		toolNames:             toolNames,
+		thinkingEnabled:       thinkingEnabled,
+		searchEnabled:         searchEnabled,
+		stripReferenceMarkers: stripReferenceMarkers,
+		bufferToolContent:     bufferToolContent,
+		emitEarlyToolDeltas:   emitEarlyToolDeltas,
+		streamToolCallIDs:     map[int]string{},
+		streamToolNames:       map[int]string{},
 	}
 }
 
@@ -98,7 +101,7 @@ func (s *chatStreamRuntime) sendDone() {
 
 func (s *chatStreamRuntime) finalize(finishReason string) {
 	finalThinking := s.thinking.String()
-	finalText := sanitizeLeakedOutput(s.text.String())
+	finalText := cleanVisibleOutput(s.text.String(), s.stripReferenceMarkers)
 	detected := util.ParseStandaloneToolCallsDetailed(finalText, s.toolNames)
 	if len(detected.Calls) > 0 && !s.toolCallsDoneEmitted {
 		finishReason = "tool_calls"
@@ -142,7 +145,7 @@ func (s *chatStreamRuntime) finalize(finishReason string) {
 			if evt.Content == "" {
 				continue
 			}
-			cleaned := sanitizeLeakedOutput(evt.Content)
+			cleaned := cleanVisibleOutput(evt.Content, s.stripReferenceMarkers)
 			if cleaned == "" {
 				continue
 			}
@@ -203,10 +206,11 @@ func (s *chatStreamRuntime) onParsed(parsed sse.LineResult) streamengine.ParsedD
 	newChoices := make([]map[string]any, 0, len(parsed.Parts))
 	contentSeen := false
 	for _, p := range parsed.Parts {
-		if s.searchEnabled && sse.IsCitation(p.Text) {
+		cleanedText := cleanVisibleOutput(p.Text, s.stripReferenceMarkers)
+		if s.searchEnabled && sse.IsCitation(cleanedText) {
 			continue
 		}
-		if p.Text == "" {
+		if cleanedText == "" {
 			continue
 		}
 		contentSeen = true
@@ -217,15 +221,15 @@ func (s *chatStreamRuntime) onParsed(parsed sse.LineResult) streamengine.ParsedD
 		}
 		if p.Type == "thinking" {
 			if s.thinkingEnabled {
-				s.thinking.WriteString(p.Text)
-				delta["reasoning_content"] = p.Text
+				s.thinking.WriteString(cleanedText)
+				delta["reasoning_content"] = cleanedText
 			}
 		} else {
-			s.text.WriteString(p.Text)
+			s.text.WriteString(cleanedText)
 			if !s.bufferToolContent {
-				delta["content"] = p.Text
+				delta["content"] = cleanedText
 			} else {
-				events := processToolSieveChunk(&s.toolSieve, p.Text, s.toolNames)
+				events := processToolSieveChunk(&s.toolSieve, cleanedText, s.toolNames)
 				for _, evt := range events {
 					if len(evt.ToolCallDeltas) > 0 {
 						if !s.emitEarlyToolDeltas {
@@ -264,7 +268,7 @@ func (s *chatStreamRuntime) onParsed(parsed sse.LineResult) streamengine.ParsedD
 						continue
 					}
 					if evt.Content != "" {
-						cleaned := sanitizeLeakedOutput(evt.Content)
+						cleaned := cleanVisibleOutput(evt.Content, s.stripReferenceMarkers)
 						if cleaned == "" {
 							continue
 						}

internal/adapter/openai/deps.go

@@ -19,16 +19,19 @@ type DeepSeekCaller interface {
 	CreateSession(ctx context.Context, a *auth.RequestAuth, maxAttempts int) (string, error)
 	GetPow(ctx context.Context, a *auth.RequestAuth, maxAttempts int) (string, error)
 	CallCompletion(ctx context.Context, a *auth.RequestAuth, payload map[string]any, powResp string, maxAttempts int) (*http.Response, error)
+	DeleteSessionForToken(ctx context.Context, token string, sessionID string) (*deepseek.DeleteSessionResult, error)
 	DeleteAllSessionsForToken(ctx context.Context, token string) error
 }
 
 type ConfigReader interface {
 	ModelAliases() map[string]string
 	CompatWideInputStrictOutput() bool
+	CompatStripReferenceMarkers() bool
 	ToolcallMode() string
 	ToolcallEarlyEmitConfidence() string
 	ResponsesStoreTTLSeconds() int
 	EmbeddingsProvider() string
+	AutoDeleteMode() string
 	AutoDeleteSessions() bool
 }
 

internal/adapter/openai/deps_injection_test.go

@@ -3,23 +3,31 @@ package openai
 import "testing"
 
 type mockOpenAIConfig struct {
-	aliases      map[string]string
-	wideInput    bool
-	toolMode     string
-	earlyEmit    string
-	responsesTTL int
-	embedProv    string
+	aliases        map[string]string
+	wideInput      bool
+	autoDeleteMode string
+	toolMode       string
+	earlyEmit      string
+	responsesTTL   int
+	embedProv      string
 }
 
 func (m mockOpenAIConfig) ModelAliases() map[string]string { return m.aliases }
 func (m mockOpenAIConfig) CompatWideInputStrictOutput() bool {
 	return m.wideInput
 }
+func (m mockOpenAIConfig) CompatStripReferenceMarkers() bool   { return true }
 func (m mockOpenAIConfig) ToolcallMode() string                { return m.toolMode }
 func (m mockOpenAIConfig) ToolcallEarlyEmitConfidence() string { return m.earlyEmit }
 func (m mockOpenAIConfig) ResponsesStoreTTLSeconds() int       { return m.responsesTTL }
 func (m mockOpenAIConfig) EmbeddingsProvider() string          { return m.embedProv }
-func (m mockOpenAIConfig) AutoDeleteSessions() bool            { return false }
+func (m mockOpenAIConfig) AutoDeleteMode() string {
+	if m.autoDeleteMode == "" {
+		return "none"
+	}
+	return m.autoDeleteMode
+}
+func (m mockOpenAIConfig) AutoDeleteSessions() bool { return false }
 
 func TestNormalizeOpenAIChatRequestWithConfigInterface(t *testing.T) {
 	cfg := mockOpenAIConfig{

internal/adapter/openai/handler_chat.go

@@ -35,22 +35,9 @@ func (h *Handler) ChatCompletions(w http.ResponseWriter, r *http.Request) {
 		writeOpenAIError(w, status, detail)
 		return
 	}
+	var sessionID string
 	defer func() {
-		// 自动删除会话（同步）
-		// 必须在 Release 之前同步删除，否则：
-		// 1. 异步删除时账号已被 Release
-		// 2. 新请求可能获取到同一账号并开始使用
-		// 3. 异步删除仍在进行，会截断新请求正在使用的会话
-		if h.Store.AutoDeleteSessions() && a.DeepSeekToken != "" {
-			deleteCtx, cancel := context.WithTimeout(r.Context(), 10*time.Second)
-			defer cancel()
-			err := h.DS.DeleteAllSessionsForToken(deleteCtx, a.DeepSeekToken)
-			if err != nil {
-				config.Logger.Warn("[auto_delete_sessions] failed", "account", a.AccountID, "error", err)
-			} else {
-				config.Logger.Debug("[auto_delete_sessions] success", "account", a.AccountID)
-			}
-		}
+		h.autoDeleteRemoteSession(r.Context(), a, sessionID)
 		h.Auth.Release(a)
 	}()
 
@@ -67,7 +54,7 @@ func (h *Handler) ChatCompletions(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	sessionID, err := h.DS.CreateSession(r.Context(), a, 3)
+	sessionID, err = h.DS.CreateSession(r.Context(), a, 3)
 	if err != nil {
 		if a.UseConfigToken {
 			writeOpenAIError(w, http.StatusUnauthorized, "Account token is invalid. Please re-login the account in admin.")
@@ -94,6 +81,39 @@ func (h *Handler) ChatCompletions(w http.ResponseWriter, r *http.Request) {
 	h.handleNonStream(w, r.Context(), resp, sessionID, stdReq.ResponseModel, stdReq.FinalPrompt, stdReq.Thinking, stdReq.ToolNames)
 }
 
+func (h *Handler) autoDeleteRemoteSession(ctx context.Context, a *auth.RequestAuth, sessionID string) {
+	mode := h.Store.AutoDeleteMode()
+	if mode == "none" || a.DeepSeekToken == "" {
+		return
+	}
+
+	deleteBaseCtx := context.WithoutCancel(ctx)
+	deleteCtx, cancel := context.WithTimeout(deleteBaseCtx, 10*time.Second)
+	defer cancel()
+
+	switch mode {
+	case "single":
+		if sessionID == "" {
+			config.Logger.Warn("[auto_delete_sessions] skipped single-session delete because session_id is empty", "account", a.AccountID)
+			return
+		}
+		_, err := h.DS.DeleteSessionForToken(deleteCtx, a.DeepSeekToken, sessionID)
+		if err != nil {
+			config.Logger.Warn("[auto_delete_sessions] failed", "account", a.AccountID, "mode", mode, "session_id", sessionID, "error", err)
+			return
+		}
+		config.Logger.Debug("[auto_delete_sessions] success", "account", a.AccountID, "mode", mode, "session_id", sessionID)
+	case "all":
+		if err := h.DS.DeleteAllSessionsForToken(deleteCtx, a.DeepSeekToken); err != nil {
+			config.Logger.Warn("[auto_delete_sessions] failed", "account", a.AccountID, "mode", mode, "error", err)
+			return
+		}
+		config.Logger.Debug("[auto_delete_sessions] success", "account", a.AccountID, "mode", mode)
+	default:
+		config.Logger.Warn("[auto_delete_sessions] unknown mode", "account", a.AccountID, "mode", mode)
+	}
+}
+
 func (h *Handler) handleNonStream(w http.ResponseWriter, ctx context.Context, resp *http.Response, completionID, model, finalPrompt string, thinkingEnabled bool, toolNames []string) {
 	if resp.StatusCode != http.StatusOK {
 		defer resp.Body.Close()
@@ -104,8 +124,12 @@ func (h *Handler) handleNonStream(w http.ResponseWriter, ctx context.Context, re
 	_ = ctx
 	result := sse.CollectStream(resp, thinkingEnabled, true)
 
-	finalThinking := result.Thinking
-	finalText := sanitizeLeakedOutput(result.Text)
+	stripReferenceMarkers := h.compatStripReferenceMarkers()
+	finalThinking := cleanVisibleOutput(result.Thinking, stripReferenceMarkers)
+	finalText := cleanVisibleOutput(result.Text, stripReferenceMarkers)
+	if writeUpstreamEmptyOutputError(w, finalThinking, finalText, result.ContentFilter) {
+		return
+	}
 	respBody := openaifmt.BuildChatCompletion(completionID, model, finalPrompt, finalThinking, finalText, toolNames)
 	if result.OutputTokens > 0 {
 		if usage, ok := respBody["usage"].(map[string]any); ok {
@@ -138,6 +162,7 @@ func (h *Handler) handleStream(w http.ResponseWriter, r *http.Request, resp *htt
 	created := time.Now().Unix()
 	bufferToolContent := len(toolNames) > 0
 	emitEarlyToolDeltas := h.toolcallFeatureMatchEnabled() && h.toolcallEarlyEmitHighConfidence()
+	stripReferenceMarkers := h.compatStripReferenceMarkers()
 	initialType := "text"
 	if thinkingEnabled {
 		initialType = "thinking"
@@ -153,6 +178,7 @@ func (h *Handler) handleStream(w http.ResponseWriter, r *http.Request, resp *htt
 		finalPrompt,
 		thinkingEnabled,
 		searchEnabled,
+		stripReferenceMarkers,
 		toolNames,
 		bufferToolContent,
 		emitEarlyToolDeltas,

internal/adapter/openai/handler_chat_auto_delete_test.go

@@ -0,0 +1,139 @@
+package openai
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"ds2api/internal/auth"
+	"ds2api/internal/deepseek"
+)
+
+type autoDeleteModeDSStub struct {
+	resp          *http.Response
+	singleCalls   int
+	allCalls      int
+	lastSessionID string
+	lastCtxErr    error
+}
+
+func (m *autoDeleteModeDSStub) CreateSession(_ context.Context, _ *auth.RequestAuth, _ int) (string, error) {
+	return "session-id", nil
+}
+
+func (m *autoDeleteModeDSStub) GetPow(_ context.Context, _ *auth.RequestAuth, _ int) (string, error) {
+	return "pow", nil
+}
+
+func (m *autoDeleteModeDSStub) CallCompletion(_ context.Context, _ *auth.RequestAuth, _ map[string]any, _ string, _ int) (*http.Response, error) {
+	return m.resp, nil
+}
+
+func (m *autoDeleteModeDSStub) DeleteSessionForToken(_ context.Context, _ string, sessionID string) (*deepseek.DeleteSessionResult, error) {
+	m.singleCalls++
+	m.lastSessionID = sessionID
+	return &deepseek.DeleteSessionResult{SessionID: sessionID, Success: true}, nil
+}
+
+func (m *autoDeleteModeDSStub) DeleteAllSessionsForToken(_ context.Context, _ string) error {
+	m.allCalls++
+	return nil
+}
+
+func (m *autoDeleteModeDSStub) DeleteSessionForTokenCtx(ctx context.Context, _ string, sessionID string) (*deepseek.DeleteSessionResult, error) {
+	m.singleCalls++
+	m.lastSessionID = sessionID
+	m.lastCtxErr = ctx.Err()
+	return &deepseek.DeleteSessionResult{SessionID: sessionID, Success: true}, nil
+}
+
+func TestChatCompletionsAutoDeleteModes(t *testing.T) {
+	tests := []struct {
+		name       string
+		mode       string
+		wantSingle int
+		wantAll    int
+	}{
+		{name: "none", mode: "none"},
+		{name: "single", mode: "single", wantSingle: 1},
+		{name: "all", mode: "all", wantAll: 1},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			ds := &autoDeleteModeDSStub{
+				resp: makeOpenAISSEHTTPResponse(
+					`data: {"p":"response/content","v":"hello"}`,
+					"data: [DONE]",
+				),
+			}
+			h := &Handler{
+				Store: mockOpenAIConfig{
+					wideInput:      true,
+					autoDeleteMode: tc.mode,
+				},
+				Auth: streamStatusAuthStub{},
+				DS:   ds,
+			}
+
+			reqBody := `{"model":"deepseek-chat","messages":[{"role":"user","content":"hi"}],"stream":false}`
+			req := httptest.NewRequest(http.MethodPost, "/v1/chat/completions", strings.NewReader(reqBody))
+			req.Header.Set("Authorization", "Bearer direct-token")
+			req.Header.Set("Content-Type", "application/json")
+			rec := httptest.NewRecorder()
+
+			h.ChatCompletions(rec, req)
+
+			if rec.Code != http.StatusOK {
+				t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
+			}
+			if ds.singleCalls != tc.wantSingle {
+				t.Fatalf("single delete calls=%d want=%d", ds.singleCalls, tc.wantSingle)
+			}
+			if ds.allCalls != tc.wantAll {
+				t.Fatalf("all delete calls=%d want=%d", ds.allCalls, tc.wantAll)
+			}
+			if tc.wantSingle > 0 && ds.lastSessionID != "session-id" {
+				t.Fatalf("expected single delete for session-id, got %q", ds.lastSessionID)
+			}
+		})
+	}
+}
+
+type autoDeleteCtxDSStub struct {
+	autoDeleteModeDSStub
+}
+
+func (m *autoDeleteCtxDSStub) DeleteSessionForToken(ctx context.Context, token string, sessionID string) (*deepseek.DeleteSessionResult, error) {
+	return m.autoDeleteModeDSStub.DeleteSessionForTokenCtx(ctx, token, sessionID)
+}
+
+func (m *autoDeleteCtxDSStub) DeleteAllSessionsForToken(_ context.Context, _ string) error {
+	m.allCalls++
+	return nil
+}
+
+func TestAutoDeleteRemoteSessionIgnoresCanceledParentContext(t *testing.T) {
+	ds := &autoDeleteCtxDSStub{}
+	h := &Handler{
+		Store: mockOpenAIConfig{
+			wideInput:      true,
+			autoDeleteMode: "single",
+		},
+		DS: ds,
+	}
+	a := &auth.RequestAuth{DeepSeekToken: "token", AccountID: "acct"}
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	h.autoDeleteRemoteSession(ctx, a, "session-id")
+
+	if ds.singleCalls != 1 {
+		t.Fatalf("single delete calls=%d want=1", ds.singleCalls)
+	}
+	if ds.lastCtxErr != nil {
+		t.Fatalf("delete ctx should not inherit cancellation, got %v", ds.lastCtxErr)
+	}
+}

internal/adapter/openai/handler_routes.go

@@ -28,6 +28,13 @@ type Handler struct {
 	responses    *responseStore
 }
 
+func (h *Handler) compatStripReferenceMarkers() bool {
+	if h == nil || h.Store == nil {
+		return true
+	}
+	return h.Store.CompatStripReferenceMarkers()
+}
+
 type streamLease struct {
 	Auth      *auth.RequestAuth
 	ExpiresAt time.Time

internal/adapter/openai/handler_toolcall_test.go

@@ -275,6 +275,44 @@ func TestHandleNonStreamFencedToolCallExamplePromotesToolCall(t *testing.T) {
 	TestHandleNonStreamFencedToolCallExampleDoesNotPromoteToolCall(t)
 }
 
+func TestHandleNonStreamReturns502WhenUpstreamOutputEmpty(t *testing.T) {
+	h := &Handler{}
+	resp := makeSSEHTTPResponse(
+		`data: {"p":"response/content","v":""}`,
+		`data: [DONE]`,
+	)
+	rec := httptest.NewRecorder()
+
+	h.handleNonStream(rec, context.Background(), resp, "cid-empty", "deepseek-chat", "prompt", false, nil)
+	if rec.Code != http.StatusBadGateway {
+		t.Fatalf("expected status 502 for empty upstream output, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	out := decodeJSONBody(t, rec.Body.String())
+	errObj, _ := out["error"].(map[string]any)
+	if asString(errObj["code"]) != "upstream_empty_output" {
+		t.Fatalf("expected code=upstream_empty_output, got %#v", out)
+	}
+}
+
+func TestHandleNonStreamReturnsContentFilterErrorWhenUpstreamFilteredWithoutOutput(t *testing.T) {
+	h := &Handler{}
+	resp := makeSSEHTTPResponse(
+		`data: {"code":"content_filter"}`,
+		`data: [DONE]`,
+	)
+	rec := httptest.NewRecorder()
+
+	h.handleNonStream(rec, context.Background(), resp, "cid-empty-filtered", "deepseek-chat", "prompt", false, nil)
+	if rec.Code != http.StatusBadRequest {
+		t.Fatalf("expected status 400 for filtered upstream output, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	out := decodeJSONBody(t, rec.Body.String())
+	errObj, _ := out["error"].(map[string]any)
+	if asString(errObj["code"]) != "content_filter" {
+		t.Fatalf("expected code=content_filter, got %#v", out)
+	}
+}
+
 func TestHandleStreamToolCallInterceptsWithoutRawContentLeak(t *testing.T) {
 	h := &Handler{}
 	resp := makeSSEHTTPResponse(

internal/adapter/openai/leaked_output_sanitize.go

@@ -9,9 +9,9 @@ var leakedToolCallArrayPattern = regexp.MustCompile(`(?is)\[\{\s*"function"\s*:\
 var leakedToolResultBlobPattern = regexp.MustCompile(`(?is)<\s*\|\s*tool\s*\|\s*>\s*\{[\s\S]*?"tool_call_id"\s*:\s*"call[^"]*"\s*}`)
 
 // leakedMetaMarkerPattern matches DeepSeek special tokens in BOTH forms:
-//   - ASCII underscore: <｜end_of_sentence｜>
-//   - U+2581 variant:   <｜end▁of▁sentence｜>  (used in some DeepSeek outputs)
-var leakedMetaMarkerPattern = regexp.MustCompile(`(?i)<[｜\|]\s*(?:assistant|tool|end[_▁]of[_▁]sentence|end[_▁]of[_▁]thinking)\s*[｜\|]>`)
+//   - ASCII underscore: <｜end_of_sentence｜>, <｜end_of_toolresults｜>, <｜end_of_instructions｜>
+//   - U+2581 variant:   <｜end▁of▁sentence｜>, <｜end▁of▁toolresults｜>, <｜end▁of▁instructions｜>
+var leakedMetaMarkerPattern = regexp.MustCompile(`(?i)<[｜\|]\s*(?:assistant|tool|end[_▁]of[_▁]sentence|end[_▁]of[_▁]thinking|end[_▁]of[_▁]toolresults|end[_▁]of[_▁]instructions)\s*[｜\|]>`)
 
 // leakedAgentXMLBlockPatterns catch agent-style XML blocks that leak through
 // when the sieve fails to capture them. These are applied only to complete

internal/adapter/openai/leaked_output_sanitize_test.go

@@ -19,9 +19,9 @@ func TestSanitizeLeakedOutputRemovesLeakedWireToolCallAndResult(t *testing.T) {
 }
 
 func TestSanitizeLeakedOutputRemovesStandaloneMetaMarkers(t *testing.T) {
-	raw := "A<| end_of_sentence |><| Assistant |>B<| end_of_thinking |>C<｜end▁of▁thinking｜>D<｜end▁of▁sentence｜>E"
+	raw := "A<| end_of_sentence |><| Assistant |>B<| end_of_thinking |>C<｜end▁of▁thinking｜>D<｜end▁of▁sentence｜>E<| end_of_toolresults |>F<｜end▁of▁instructions｜>G"
 	got := sanitizeLeakedOutput(raw)
-	if got != "ABCDE" {
+	if got != "ABCDEFG" {
 		t.Fatalf("unexpected sanitize result for meta markers: %q", got)
 	}
 }

internal/adapter/openai/output_clean.go

@@ -0,0 +1,13 @@
+package openai
+
+import textclean "ds2api/internal/textclean"
+
+func cleanVisibleOutput(text string, stripReferenceMarkers bool) string {
+	if text == "" {
+		return text
+	}
+	if stripReferenceMarkers {
+		text = textclean.StripReferenceMarkers(text)
+	}
+	return sanitizeLeakedOutput(text)
+}

internal/adapter/openai/responses_handler.go

@@ -113,7 +113,12 @@ func (h *Handler) handleResponsesNonStream(w http.ResponseWriter, resp *http.Res
 		return
 	}
 	result := sse.CollectStream(resp, thinkingEnabled, true)
-	sanitizedText := sanitizeLeakedOutput(result.Text)
+	stripReferenceMarkers := h.compatStripReferenceMarkers()
+	sanitizedThinking := cleanVisibleOutput(result.Thinking, stripReferenceMarkers)
+	sanitizedText := cleanVisibleOutput(result.Text, stripReferenceMarkers)
+	if writeUpstreamEmptyOutputError(w, sanitizedThinking, sanitizedText, result.ContentFilter) {
+		return
+	}
 	textParsed := util.ParseStandaloneToolCallsDetailed(sanitizedText, toolNames)
 	logResponsesToolPolicyRejection(traceID, toolChoice, textParsed, "text")
 
@@ -123,7 +128,7 @@ func (h *Handler) handleResponsesNonStream(w http.ResponseWriter, resp *http.Res
 		return
 	}
 
-	responseObj := openaifmt.BuildResponseObject(responseID, model, finalPrompt, result.Thinking, sanitizedText, toolNames)
+	responseObj := openaifmt.BuildResponseObject(responseID, model, finalPrompt, sanitizedThinking, sanitizedText, toolNames)
 	if result.OutputTokens > 0 {
 		if usage, ok := responseObj["usage"].(map[string]any); ok {
 			usage["output_tokens"] = result.OutputTokens
@@ -156,6 +161,7 @@ func (h *Handler) handleResponsesStream(w http.ResponseWriter, r *http.Request,
 	}
 	bufferToolContent := len(toolNames) > 0
 	emitEarlyToolDeltas := h.toolcallFeatureMatchEnabled() && h.toolcallEarlyEmitHighConfidence()
+	stripReferenceMarkers := h.compatStripReferenceMarkers()
 
 	streamRuntime := newResponsesStreamRuntime(
 		w,
@@ -166,6 +172,7 @@ func (h *Handler) handleResponsesStream(w http.ResponseWriter, r *http.Request,
 		finalPrompt,
 		thinkingEnabled,
 		searchEnabled,
+		stripReferenceMarkers,
 		toolNames,
 		bufferToolContent,
 		emitEarlyToolDeltas,

internal/adapter/openai/responses_stream_runtime_core.go

@@ -23,8 +23,9 @@ type responsesStreamRuntime struct {
 	traceID     string
 	toolChoice  util.ToolChoicePolicy
 
-	thinkingEnabled bool
-	searchEnabled   bool
+	thinkingEnabled       bool
+	searchEnabled         bool
+	stripReferenceMarkers bool
 
 	bufferToolContent    bool
 	emitEarlyToolDeltas  bool
@@ -63,6 +64,7 @@ func newResponsesStreamRuntime(
 	finalPrompt string,
 	thinkingEnabled bool,
 	searchEnabled bool,
+	stripReferenceMarkers bool,
 	toolNames []string,
 	bufferToolContent bool,
 	emitEarlyToolDeltas bool,
@@ -71,34 +73,35 @@ func newResponsesStreamRuntime(
 	persistResponse func(obj map[string]any),
 ) *responsesStreamRuntime {
 	return &responsesStreamRuntime{
-		w:                   w,
-		rc:                  rc,
-		canFlush:            canFlush,
-		responseID:          responseID,
-		model:               model,
-		finalPrompt:         finalPrompt,
-		thinkingEnabled:     thinkingEnabled,
-		searchEnabled:       searchEnabled,
-		toolNames:           toolNames,
-		bufferToolContent:   bufferToolContent,
-		emitEarlyToolDeltas: emitEarlyToolDeltas,
-		streamToolCallIDs:   map[int]string{},
-		functionItemIDs:     map[int]string{},
-		functionOutputIDs:   map[int]int{},
-		functionArgs:        map[int]string{},
-		functionDone:        map[int]bool{},
-		functionAdded:       map[int]bool{},
-		functionNames:       map[int]string{},
-		messageOutputID:     -1,
-		toolChoice:          toolChoice,
-		traceID:             traceID,
-		persistResponse:     persistResponse,
+		w:                     w,
+		rc:                    rc,
+		canFlush:              canFlush,
+		responseID:            responseID,
+		model:                 model,
+		finalPrompt:           finalPrompt,
+		thinkingEnabled:       thinkingEnabled,
+		searchEnabled:         searchEnabled,
+		stripReferenceMarkers: stripReferenceMarkers,
+		toolNames:             toolNames,
+		bufferToolContent:     bufferToolContent,
+		emitEarlyToolDeltas:   emitEarlyToolDeltas,
+		streamToolCallIDs:     map[int]string{},
+		functionItemIDs:       map[int]string{},
+		functionOutputIDs:     map[int]int{},
+		functionArgs:          map[int]string{},
+		functionDone:          map[int]bool{},
+		functionAdded:         map[int]bool{},
+		functionNames:         map[int]string{},
+		messageOutputID:       -1,
+		toolChoice:            toolChoice,
+		traceID:               traceID,
+		persistResponse:       persistResponse,
 	}
 }
 
 func (s *responsesStreamRuntime) finalize() {
 	finalThinking := s.thinking.String()
-	finalText := sanitizeLeakedOutput(s.text.String())
+	finalText := cleanVisibleOutput(s.text.String(), s.stripReferenceMarkers)
 
 	if s.bufferToolContent {
 		s.processToolStreamEvents(flushToolSieve(&s.sieve, s.toolNames), true)
@@ -190,10 +193,11 @@ func (s *responsesStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Pa
 
 	contentSeen := false
 	for _, p := range parsed.Parts {
-		if p.Text == "" {
+		cleanedText := cleanVisibleOutput(p.Text, s.stripReferenceMarkers)
+		if cleanedText == "" {
 			continue
 		}
-		if p.Type != "thinking" && s.searchEnabled && sse.IsCitation(p.Text) {
+		if p.Type != "thinking" && s.searchEnabled && sse.IsCitation(cleanedText) {
 			continue
 		}
 		contentSeen = true
@@ -201,15 +205,11 @@ func (s *responsesStreamRuntime) onParsed(parsed sse.LineResult) streamengine.Pa
 			if !s.thinkingEnabled {
 				continue
 			}
-			s.thinking.WriteString(p.Text)
-			s.sendEvent("response.reasoning.delta", openaifmt.BuildResponsesReasoningDeltaPayload(s.responseID, p.Text))
+			s.thinking.WriteString(cleanedText)
+			s.sendEvent("response.reasoning.delta", openaifmt.BuildResponsesReasoningDeltaPayload(s.responseID, cleanedText))
 			continue
 		}
 
-		cleanedText := sanitizeLeakedOutput(p.Text)
-		if cleanedText == "" {
-			continue
-		}
 		s.text.WriteString(cleanedText)
 		if !s.bufferToolContent {
 			s.emitTextDelta(cleanedText)

internal/adapter/openai/responses_stream_runtime_toolcalls.go

@@ -69,7 +69,7 @@ func (s *responsesStreamRuntime) ensureMessageContentPartAdded() {
 }
 
 func (s *responsesStreamRuntime) emitTextDelta(content string) {
-	if strings.TrimSpace(content) == "" {
+	if content == "" {
 		return
 	}
 	s.ensureMessageContentPartAdded()

internal/adapter/openai/responses_stream_runtime_toolcalls_finalize.go

@@ -83,13 +83,13 @@ func (s *responsesStreamRuntime) buildCompletedResponseObject(finalThinking, fin
 		})
 	} else if len(calls) == 0 {
 		content := make([]map[string]any, 0, 2)
-		if strings.TrimSpace(finalThinking) != "" {
+		if finalThinking != "" {
 			content = append(content, map[string]any{
 				"type": "reasoning",
 				"text": finalThinking,
 			})
 		}
-		if strings.TrimSpace(finalText) != "" {
+		if finalText != "" {
 			content = append(content, map[string]any{
 				"type": "output_text",
 				"text": finalText,
@@ -136,10 +136,10 @@ func (s *responsesStreamRuntime) buildCompletedResponseObject(finalThinking, fin
 	}
 
 	outputText := s.visibleText.String()
-	if strings.TrimSpace(outputText) == "" && len(calls) == 0 {
-		if strings.TrimSpace(finalText) != "" {
+	if outputText == "" && len(calls) == 0 {
+		if finalText != "" {
 			outputText = finalText
-		} else if strings.TrimSpace(finalThinking) != "" {
+		} else if finalThinking != "" {
 			outputText = finalThinking
 		}
 	}

internal/adapter/openai/responses_stream_test.go

@@ -627,6 +627,50 @@ func TestHandleResponsesNonStreamToolChoiceNoneStillAllowsFunctionCall(t *testin
 	}
 }
 
+func TestHandleResponsesNonStreamReturns502WhenUpstreamOutputEmpty(t *testing.T) {
+	h := &Handler{}
+	rec := httptest.NewRecorder()
+	resp := &http.Response{
+		StatusCode: http.StatusOK,
+		Body: io.NopCloser(strings.NewReader(
+			`data: {"p":"response/content","v":""}` + "\n" +
+				`data: [DONE]` + "\n",
+		)),
+	}
+
+	h.handleResponsesNonStream(rec, resp, "owner-a", "resp_test", "deepseek-chat", "prompt", false, nil, util.DefaultToolChoicePolicy(), "")
+	if rec.Code != http.StatusBadGateway {
+		t.Fatalf("expected 502 for empty upstream output, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	out := decodeJSONBody(t, rec.Body.String())
+	errObj, _ := out["error"].(map[string]any)
+	if asString(errObj["code"]) != "upstream_empty_output" {
+		t.Fatalf("expected code=upstream_empty_output, got %#v", out)
+	}
+}
+
+func TestHandleResponsesNonStreamReturnsContentFilterErrorWhenUpstreamFilteredWithoutOutput(t *testing.T) {
+	h := &Handler{}
+	rec := httptest.NewRecorder()
+	resp := &http.Response{
+		StatusCode: http.StatusOK,
+		Body: io.NopCloser(strings.NewReader(
+			`data: {"code":"content_filter"}` + "\n" +
+				`data: [DONE]` + "\n",
+		)),
+	}
+
+	h.handleResponsesNonStream(rec, resp, "owner-a", "resp_test", "deepseek-chat", "prompt", false, nil, util.DefaultToolChoicePolicy(), "")
+	if rec.Code != http.StatusBadRequest {
+		t.Fatalf("expected 400 for filtered empty upstream output, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	out := decodeJSONBody(t, rec.Body.String())
+	errObj, _ := out["error"].(map[string]any)
+	if asString(errObj["code"]) != "content_filter" {
+		t.Fatalf("expected code=content_filter, got %#v", out)
+	}
+}
+
 func extractSSEEventPayload(body, targetEvent string) (map[string]any, bool) {
 	scanner := bufio.NewScanner(strings.NewReader(body))
 	matched := false

internal/adapter/openai/stream_status_test.go

@@ -13,6 +13,7 @@ import (
 	chimw "github.com/go-chi/chi/v5/middleware"
 
 	"ds2api/internal/auth"
+	"ds2api/internal/deepseek"
 )
 
 type streamStatusAuthStub struct{}
@@ -53,6 +54,10 @@ func (m streamStatusDSStub) CallCompletion(_ context.Context, _ *auth.RequestAut
 	return m.resp, nil
 }
 
+func (m streamStatusDSStub) DeleteSessionForToken(_ context.Context, _ string, _ string) (*deepseek.DeleteSessionResult, error) {
+	return &deepseek.DeleteSessionResult{Success: true}, nil
+}
+
 func (m streamStatusDSStub) DeleteAllSessionsForToken(_ context.Context, _ string) error {
 	return nil
 }

internal/adapter/openai/tool_sieve_state.go

@@ -48,7 +48,7 @@ func (s *toolStreamSieveState) resetIncrementalToolState() {
 }
 
 func (s *toolStreamSieveState) noteText(content string) {
-	if strings.TrimSpace(content) == "" {
+	if content == "" {
 		return
 	}
 	s.recentTextTail = appendTail(s.recentTextTail, content, toolSieveContextTailLimit)

internal/adapter/openai/tool_sieve_xml.go

@@ -71,12 +71,31 @@ func consumeXMLToolCapture(captured string, toolNames []string) (prefix string,
 			prefixPart, suffixPart = trimWrappingJSONFence(prefixPart, suffixPart)
 			return prefixPart, parsed, suffixPart, true
 		}
+		// If this block does not look like an executable tool-call payload,
+		// pass it through as normal content (e.g. user-requested XML snippets).
+		if !looksLikeExecutableXMLToolCallBlock(xmlBlock, pair.open) {
+			return prefixPart + xmlBlock, nil, suffixPart, true
+		}
 		// Looks like XML tool syntax but failed to parse — consume it to avoid leak.
 		return prefixPart, nil, suffixPart, true
 	}
 	return "", nil, "", false
 }
 
+func looksLikeExecutableXMLToolCallBlock(xmlBlock, openTag string) bool {
+	lower := strings.ToLower(xmlBlock)
+	// Agent wrapper tags are always treated as internal tool-call wrappers.
+	switch openTag {
+	case "<attempt_completion", "<ask_followup_question", "<new_task":
+		return true
+	}
+	return strings.Contains(lower, "<tool_name") ||
+		strings.Contains(lower, "<parameters") ||
+		strings.Contains(lower, `"tool"`) ||
+		strings.Contains(lower, `"tool_name"`) ||
+		strings.Contains(lower, `"name"`)
+}
+
 // hasOpenXMLToolTag returns true if captured text contains an XML tool opening tag
 // whose SPECIFIC closing tag has not appeared yet.
 func hasOpenXMLToolTag(captured string) bool {

internal/adapter/openai/tool_sieve_xml_test.go

@@ -78,6 +78,49 @@ func TestProcessToolSieveXMLWithLeadingText(t *testing.T) {
 	}
 }
 
+func TestProcessToolSievePassesThroughNonToolXMLBlock(t *testing.T) {
+	var state toolStreamSieveState
+	chunk := `<tool_call><title>示例 XML</title><body>plain text xml payload</body></tool_call>`
+	events := processToolSieveChunk(&state, chunk, []string{"read_file"})
+	events = append(events, flushToolSieve(&state, []string{"read_file"})...)
+
+	var textContent strings.Builder
+	toolCalls := 0
+	for _, evt := range events {
+		textContent.WriteString(evt.Content)
+		toolCalls += len(evt.ToolCalls)
+	}
+	if toolCalls != 0 {
+		t.Fatalf("expected no tool calls for plain XML payload, got %d events=%#v", toolCalls, events)
+	}
+	if textContent.String() != chunk {
+		t.Fatalf("expected XML payload to pass through unchanged, got %q", textContent.String())
+	}
+}
+
+func TestProcessToolSieveNonToolXMLKeepsSuffixForToolParsing(t *testing.T) {
+	var state toolStreamSieveState
+	chunk := `<tool_call><title>plain xml</title></tool_call><invoke name="read_file"><parameters>{"path":"README.MD"}</parameters></invoke>`
+	events := processToolSieveChunk(&state, chunk, []string{"read_file"})
+	events = append(events, flushToolSieve(&state, []string{"read_file"})...)
+
+	var textContent strings.Builder
+	toolCalls := 0
+	for _, evt := range events {
+		textContent.WriteString(evt.Content)
+		toolCalls += len(evt.ToolCalls)
+	}
+	if !strings.Contains(textContent.String(), `<tool_call><title>plain xml</title></tool_call>`) {
+		t.Fatalf("expected leading non-tool XML to be preserved, got %q", textContent.String())
+	}
+	if strings.Contains(textContent.String(), `<invoke name="read_file">`) {
+		t.Fatalf("expected invoke tool XML to be intercepted, got %q", textContent.String())
+	}
+	if toolCalls != 1 {
+		t.Fatalf("expected exactly one parsed tool call from suffix, got %d events=%#v", toolCalls, events)
+	}
+}
+
 func TestProcessToolSievePartialXMLTagHeldBack(t *testing.T) {
 	var state toolStreamSieveState
 	// Chunk ends with a partial XML tool tag.
@@ -364,7 +407,7 @@ func TestOpeningXMLTagNotLeakedAsContent(t *testing.T) {
 
 func TestProcessToolSieveInterceptsAttemptCompletionLeak(t *testing.T) {
 	var state toolStreamSieveState
-	// Simulate an agent outputting attempt_completion XML tag 
+	// Simulate an agent outputting attempt_completion XML tag
 	// which shouldn't leak to text output, even if it fails to parse as a valid tool.
 	chunks := []string{
 		"Done with task.\n",

internal/adapter/openai/upstream_empty.go

@@ -0,0 +1,15 @@
+package openai
+
+import "net/http"
+
+func writeUpstreamEmptyOutputError(w http.ResponseWriter, thinking, text string, contentFilter bool) bool {
+	if thinking != "" || text != "" {
+		return false
+	}
+	if contentFilter {
+		writeOpenAIErrorWithCode(w, http.StatusBadRequest, "Upstream content filtered the response and returned no output.", "content_filter")
+		return true
+	}
+	writeOpenAIErrorWithCode(w, http.StatusBadGateway, "Upstream model returned empty output.", "upstream_empty_output")
+	return true
+}

internal/adapter/openai/vercel_stream.go

@@ -99,10 +99,13 @@ func (h *Handler) handleVercelStreamPrepare(w http.ResponseWriter, r *http.Reque
 		"final_prompt":     stdReq.FinalPrompt,
 		"thinking_enabled": stdReq.Thinking,
 		"search_enabled":   stdReq.Search,
-		"tool_names":       stdReq.ToolNames,
-		"deepseek_token":   a.DeepSeekToken,
-		"pow_header":       powHeader,
-		"payload":          payload,
+		"compat": map[string]any{
+			"strip_reference_markers": h.compatStripReferenceMarkers(),
+		},
+		"tool_names":     stdReq.ToolNames,
+		"deepseek_token": a.DeepSeekToken,
+		"pow_header":     powHeader,
+		"payload":        payload,
 	})
 }
 

internal/admin/deps.go

@@ -32,6 +32,8 @@ type ConfigStore interface {
 	RuntimeAccountMaxQueue(defaultSize int) int
 	RuntimeGlobalMaxInflight(defaultSize int) int
 	RuntimeTokenRefreshIntervalHours() int
+	AutoDeleteMode() string
+	CompatStripReferenceMarkers() bool
 	AutoDeleteSessions() bool
 }
 
@@ -41,6 +43,10 @@ type PoolController interface {
 	ApplyRuntimeLimits(maxInflightPerAccount, maxQueueSize, globalMaxInflight int)
 }
 
+type OpenAIChatCaller interface {
+	ChatCompletions(w http.ResponseWriter, r *http.Request)
+}
+
 type DeepSeekCaller interface {
 	Login(ctx context.Context, acc config.Account) (string, error)
 	CreateSession(ctx context.Context, a *auth.RequestAuth, maxAttempts int) (string, error)

internal/admin/handler.go

@@ -5,9 +5,10 @@ import (
 )
 
 type Handler struct {
-	Store ConfigStore
-	Pool  PoolController
-	DS    DeepSeekCaller
+	Store  ConfigStore
+	Pool   PoolController
+	DS     DeepSeekCaller
+	OpenAI OpenAIChatCaller
 }
 
 func RegisterRoutes(r chi.Router, h *Handler) {
@@ -34,6 +35,7 @@ func RegisterRoutes(r chi.Router, h *Handler) {
 		pr.Post("/accounts/sessions/delete-all", h.deleteAllSessions)
 		pr.Post("/import", h.batchImport)
 		pr.Post("/test", h.testAPI)
+		pr.Post("/dev/raw-samples/capture", h.captureRawSample)
 		pr.Post("/vercel/sync", h.syncVercel)
 		pr.Get("/vercel/status", h.vercelStatus)
 		pr.Post("/vercel/status", h.vercelStatus)

internal/admin/handler_accounts_identifier_test.go

@@ -17,7 +17,6 @@ import (
 func newAdminTestHandler(t *testing.T, raw string) *Handler {
 	t.Helper()
 	t.Setenv("DS2API_CONFIG_JSON", raw)
-	t.Setenv("CONFIG_JSON", "")
 	store := config.LoadStore()
 	return &Handler{
 		Store: store,

internal/admin/handler_accounts_testing.go

@@ -13,6 +13,7 @@ import (
 
 	authn "ds2api/internal/auth"
 	"ds2api/internal/config"
+	"ds2api/internal/deepseek"
 	"ds2api/internal/sse"
 )
 
@@ -157,7 +158,7 @@ func (h *Handler) testAccount(ctx context.Context, acc config.Account, model, me
 		result["message"] = "获取 PoW 失败: " + err.Error()
 		return result
 	}
-	payload := map[string]any{"chat_session_id": sessionID, "prompt": "<｜User｜>" + message, "ref_file_ids": []any{}, "thinking_enabled": thinking, "search_enabled": search}
+	payload := map[string]any{"chat_session_id": sessionID, "prompt": deepseek.MessagesPrepare([]map[string]any{{"role": "user", "content": message}}), "ref_file_ids": []any{}, "thinking_enabled": thinking, "search_enabled": search}
 	resp, err := h.DS.CallCompletion(ctx, authCtx, payload, pow, 1)
 	if err != nil {
 		result["message"] = "请求失败: " + err.Error()

internal/admin/handler_raw_samples.go

@@ -0,0 +1,233 @@
+package admin
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+
+	"ds2api/internal/config"
+	"ds2api/internal/devcapture"
+	"ds2api/internal/rawsample"
+)
+
+func (h *Handler) captureRawSample(w http.ResponseWriter, r *http.Request) {
+	if h.OpenAI == nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]any{"detail": "OpenAI handler is not configured"})
+		return
+	}
+
+	var req map[string]any
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": "invalid json"})
+		return
+	}
+
+	payload, sampleID, apiKey, err := prepareRawSampleCaptureRequest(h.Store, req)
+	if err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": err.Error()})
+		return
+	}
+
+	body, err := json.Marshal(payload)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]any{"detail": "failed to encode capture request"})
+		return
+	}
+
+	traceID := rawsample.NormalizeSampleID(sampleID)
+	if traceID == "" {
+		traceID = rawsample.DefaultSampleID("capture")
+	}
+
+	before := devcapture.Global().Snapshot()
+	rec := httptest.NewRecorder()
+	captureReq := httptest.NewRequest(http.MethodPost, "/v1/chat/completions?__trace_id="+url.QueryEscape(traceID), bytes.NewReader(body))
+	captureReq.Header.Set("Authorization", "Bearer "+apiKey)
+	captureReq.Header.Set("Content-Type", "application/json")
+	h.OpenAI.ChatCompletions(rec, captureReq)
+	after := devcapture.Global().Snapshot()
+
+	if rec.Code >= http.StatusBadRequest {
+		copyHeader(w.Header(), rec.Header())
+		w.WriteHeader(rec.Code)
+		_, _ = io.Copy(w, bytes.NewReader(rec.Body.Bytes()))
+		return
+	}
+
+	captureEntries, err := collectNewCaptureEntries(before, after)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]any{"detail": err.Error()})
+		return
+	}
+
+	saved, err := rawsample.Persist(rawsample.PersistOptions{
+		RootDir:      config.RawStreamSampleRoot(),
+		SampleID:     sampleID,
+		Source:       "admin/dev/raw-samples/capture",
+		Request:      payload,
+		Capture:      captureSummaryFromEntries(captureEntries),
+		UpstreamBody: combineCaptureBodies(captureEntries),
+	})
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]any{"detail": err.Error()})
+		return
+	}
+
+	copyHeader(w.Header(), rec.Header())
+	w.Header().Set("X-Ds2-Sample-Id", saved.SampleID)
+	w.Header().Set("X-Ds2-Sample-Dir", saved.Dir)
+	w.Header().Set("X-Ds2-Sample-Meta", saved.MetaPath)
+	w.Header().Set("X-Ds2-Sample-Upstream", saved.UpstreamPath)
+	w.WriteHeader(rec.Code)
+	_, _ = io.Copy(w, bytes.NewReader(rec.Body.Bytes()))
+}
+
+func prepareRawSampleCaptureRequest(store ConfigStore, req map[string]any) (map[string]any, string, string, error) {
+	payload := cloneMap(req)
+	sampleID := strings.TrimSpace(fieldString(payload, "sample_id"))
+	apiKey := strings.TrimSpace(fieldString(payload, "api_key"))
+
+	for _, k := range []string{"sample_id", "api_key", "promote_default", "persist", "source"} {
+		delete(payload, k)
+	}
+
+	if apiKey == "" {
+		if store == nil {
+			return nil, "", "", fmt.Errorf("no api key provided")
+		}
+		keys := store.Keys()
+		if len(keys) == 0 {
+			return nil, "", "", fmt.Errorf("no api key available")
+		}
+		apiKey = strings.TrimSpace(keys[0])
+	}
+
+	if model := strings.TrimSpace(fieldString(payload, "model")); model == "" {
+		payload["model"] = "deepseek-chat"
+	}
+	if _, ok := payload["stream"]; !ok {
+		payload["stream"] = true
+	}
+
+	if messagesRaw, ok := payload["messages"].([]any); !ok || len(messagesRaw) == 0 {
+		message := strings.TrimSpace(fieldString(payload, "message"))
+		if message == "" {
+			message = "你好"
+		}
+		payload["messages"] = []map[string]any{{"role": "user", "content": message}}
+	}
+	delete(payload, "message")
+
+	if sampleID == "" {
+		model := strings.TrimSpace(fieldString(payload, "model"))
+		if model == "" {
+			model = "capture"
+		}
+		sampleID = rawsample.DefaultSampleID(model)
+	}
+
+	return payload, sampleID, apiKey, nil
+}
+
+func collectNewCaptureEntries(before, after []devcapture.Entry) ([]devcapture.Entry, error) {
+	beforeIDs := make(map[string]struct{}, len(before))
+	for _, entry := range before {
+		beforeIDs[entry.ID] = struct{}{}
+	}
+
+	entries := make([]devcapture.Entry, 0, len(after))
+	for _, entry := range after {
+		if _, ok := beforeIDs[entry.ID]; ok {
+			continue
+		}
+		if strings.TrimSpace(entry.ResponseBody) == "" {
+			continue
+		}
+		entries = append(entries, entry)
+	}
+	if len(entries) == 0 {
+		return nil, fmt.Errorf("no upstream capture was recorded")
+	}
+
+	// Snapshot order is newest-first; reverse to preserve the actual request order.
+	for i, j := 0, len(entries)-1; i < j; i, j = i+1, j-1 {
+		entries[i], entries[j] = entries[j], entries[i]
+	}
+	return entries, nil
+}
+
+func captureSummaryFromEntries(entries []devcapture.Entry) rawsample.CaptureSummary {
+	if len(entries) == 0 {
+		return rawsample.CaptureSummary{}
+	}
+
+	// Primary metadata comes from the first (initial) capture.
+	summary := rawsample.CaptureSummary{
+		Label:      strings.TrimSpace(entries[0].Label),
+		URL:        strings.TrimSpace(entries[0].URL),
+		StatusCode: entries[0].StatusCode,
+	}
+
+	// Record every round (initial + continuations) so replay/debug
+	// can reconstruct the full multi-round interaction.
+	totalBytes := 0
+	rounds := make([]rawsample.CaptureRound, 0, len(entries))
+	for _, entry := range entries {
+		n := len(entry.ResponseBody)
+		totalBytes += n
+		rounds = append(rounds, rawsample.CaptureRound{
+			Label:         strings.TrimSpace(entry.Label),
+			URL:           strings.TrimSpace(entry.URL),
+			StatusCode:    entry.StatusCode,
+			ResponseBytes: n,
+		})
+	}
+	summary.ResponseBytes = totalBytes
+	if len(rounds) > 1 {
+		summary.Rounds = rounds
+	}
+	return summary
+}
+
+func combineCaptureBodies(entries []devcapture.Entry) []byte {
+	if len(entries) == 0 {
+		return nil
+	}
+
+	var buf bytes.Buffer
+	for _, entry := range entries {
+		if buf.Len() > 0 {
+			last := buf.Bytes()[buf.Len()-1]
+			if last != '\n' {
+				buf.WriteByte('\n')
+			}
+		}
+		buf.WriteString(entry.ResponseBody)
+	}
+	return buf.Bytes()
+}
+
+func copyHeader(dst, src http.Header) {
+	for k, vv := range src {
+		dst.Del(k)
+		for _, v := range vv {
+			dst.Add(k, v)
+		}
+	}
+}
+
+func cloneMap(in map[string]any) map[string]any {
+	if len(in) == 0 {
+		return map[string]any{}
+	}
+	out := make(map[string]any, len(in))
+	for k, v := range in {
+		out[k] = v
+	}
+	return out
+}

internal/admin/handler_raw_samples_test.go

@@ -0,0 +1,232 @@
+package admin
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"ds2api/internal/devcapture"
+)
+
+type stubOpenAIChatCaller struct{}
+
+func (stubOpenAIChatCaller) ChatCompletions(w http.ResponseWriter, _ *http.Request) {
+	store := devcapture.Global()
+	session := store.Start("deepseek_completion", "https://chat.deepseek.com/api/v0/chat/completion", "acct-test", map[string]any{"model": "deepseek-chat"})
+	raw := io.NopCloser(strings.NewReader(
+		"data: {\"v\":\"hello [reference:1]\"}\n\n" +
+			"data: {\"v\":\"FINISHED\",\"p\":\"response/status\"}\n\n",
+	))
+	if session != nil {
+		raw = session.WrapBody(raw, http.StatusOK)
+	}
+	_, _ = io.ReadAll(raw)
+	_ = raw.Close()
+
+	w.Header().Set("Content-Type", "text/event-stream")
+	w.WriteHeader(http.StatusOK)
+	_, _ = io.WriteString(w, "data: {\"choices\":[{\"delta\":{\"content\":\"hello\"},\"index\":0}],\"created\":1,\"id\":\"id\",\"model\":\"m\",\"object\":\"chat.completion.chunk\"}\n\n")
+}
+
+type stubOpenAIChatCallerWithContinuations struct{}
+
+func (stubOpenAIChatCallerWithContinuations) ChatCompletions(w http.ResponseWriter, _ *http.Request) {
+	recordCapturedResponse("deepseek_completion", "https://chat.deepseek.com/api/v0/chat/completion", http.StatusOK, map[string]any{"model": "deepseek-chat"}, "data: {\"v\":\"hello [reference:1]\"}\n\n"+"data: [DONE]\n\n")
+	recordCapturedResponse("deepseek_continue", "https://chat.deepseek.com/api/v0/chat/continue", http.StatusOK, map[string]any{"chat_session_id": "session-1", "message_id": 2}, "data: {\"v\":\"continued\"}\n\n"+"data: [DONE]\n\n")
+
+	w.Header().Set("Content-Type", "text/event-stream")
+	w.WriteHeader(http.StatusOK)
+	_, _ = io.WriteString(w, "data: {\"choices\":[{\"delta\":{\"content\":\"hello continued\"},\"index\":0}],\"created\":1,\"id\":\"id\",\"model\":\"m\",\"object\":\"chat.completion.chunk\"}\n\n")
+}
+
+type stubOpenAIChatCallerWithoutCapture struct{}
+
+func (stubOpenAIChatCallerWithoutCapture) ChatCompletions(w http.ResponseWriter, _ *http.Request) {
+	w.Header().Set("Content-Type", "text/event-stream")
+	w.WriteHeader(http.StatusOK)
+	_, _ = io.WriteString(w, "data: {\"choices\":[{\"delta\":{\"content\":\"hello\"},\"index\":0}],\"created\":1,\"id\":\"id\",\"model\":\"m\",\"object\":\"chat.completion.chunk\"}\n\n")
+}
+
+func recordCapturedResponse(label, rawURL string, statusCode int, request any, body string) {
+	store := devcapture.Global()
+	session := store.Start(label, rawURL, "acct-test", request)
+	raw := io.NopCloser(strings.NewReader(body))
+	if session != nil {
+		raw = session.WrapBody(raw, statusCode)
+	}
+	_, _ = io.ReadAll(raw)
+	_ = raw.Close()
+}
+
+func TestCaptureRawSampleWritesPersistentSample(t *testing.T) {
+	t.Setenv("DS2API_RAW_STREAM_SAMPLE_ROOT", t.TempDir())
+	devcapture.Global().Clear()
+	defer devcapture.Global().Clear()
+
+	h := &Handler{OpenAI: stubOpenAIChatCaller{}}
+	reqBody := `{
+		"sample_id":"My Sample 01",
+		"api_key":"local-key",
+		"model":"deepseek-chat",
+		"message":"广州天气",
+		"stream":true
+	}`
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodPost, "/admin/dev/raw-samples/capture", strings.NewReader(reqBody))
+	h.captureRawSample(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	if got := rec.Header().Get("X-Ds2-Sample-Id"); got != "my-sample-01" {
+		t.Fatalf("expected sample id header my-sample-01, got %q", got)
+	}
+	if got := rec.Header().Get("X-Ds2-Sample-Upstream"); got != filepath.Join(os.Getenv("DS2API_RAW_STREAM_SAMPLE_ROOT"), "my-sample-01", "upstream.stream.sse") {
+		t.Fatalf("unexpected sample upstream header: %q", got)
+	}
+	if !strings.Contains(rec.Body.String(), `"content":"hello"`) {
+		t.Fatalf("expected proxied openai output, got %s", rec.Body.String())
+	}
+
+	sampleDir := filepath.Join(os.Getenv("DS2API_RAW_STREAM_SAMPLE_ROOT"), "my-sample-01")
+	if _, err := os.Stat(sampleDir); err != nil {
+		t.Fatalf("sample dir missing: %v", err)
+	}
+	metaBytes, err := os.ReadFile(filepath.Join(sampleDir, "meta.json"))
+	if err != nil {
+		t.Fatalf("read meta: %v", err)
+	}
+	var meta map[string]any
+	if err := json.Unmarshal(metaBytes, &meta); err != nil {
+		t.Fatalf("decode meta: %v", err)
+	}
+	if meta["sample_id"] != "my-sample-01" {
+		t.Fatalf("unexpected meta sample_id: %#v", meta["sample_id"])
+	}
+	capture, _ := meta["capture"].(map[string]any)
+	if capture == nil {
+		t.Fatalf("missing capture meta: %#v", meta)
+	}
+	if got := int(capture["response_bytes"].(float64)); got == 0 {
+		t.Fatalf("expected capture bytes to be recorded, got %#v", capture)
+	}
+	if _, ok := meta["processed"]; ok {
+		t.Fatalf("unexpected processed meta: %#v", meta["processed"])
+	}
+}
+
+func TestCaptureRawSampleCombinesContinuationCaptures(t *testing.T) {
+	t.Setenv("DS2API_RAW_STREAM_SAMPLE_ROOT", t.TempDir())
+	devcapture.Global().Clear()
+	defer devcapture.Global().Clear()
+
+	h := &Handler{OpenAI: stubOpenAIChatCallerWithContinuations{}}
+	reqBody := `{
+		"sample_id":"My Sample 02",
+		"api_key":"local-key",
+		"model":"deepseek-chat",
+		"message":"广州天气",
+		"stream":true
+	}`
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodPost, "/admin/dev/raw-samples/capture", strings.NewReader(reqBody))
+	h.captureRawSample(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d body=%s", rec.Code, rec.Body.String())
+	}
+
+	sampleDir := filepath.Join(os.Getenv("DS2API_RAW_STREAM_SAMPLE_ROOT"), "my-sample-02")
+	upstreamBytes, err := os.ReadFile(filepath.Join(sampleDir, "upstream.stream.sse"))
+	if err != nil {
+		t.Fatalf("read upstream: %v", err)
+	}
+	upstream := string(upstreamBytes)
+	if !strings.Contains(upstream, "hello [reference:1]") {
+		t.Fatalf("expected initial capture in combined upstream, got %s", upstream)
+	}
+	if !strings.Contains(upstream, "continued") {
+		t.Fatalf("expected continuation capture in combined upstream, got %s", upstream)
+	}
+	if strings.Index(upstream, "hello [reference:1]") > strings.Index(upstream, "continued") {
+		t.Fatalf("expected initial capture before continuation, got %s", upstream)
+	}
+
+	metaBytes, err := os.ReadFile(filepath.Join(sampleDir, "meta.json"))
+	if err != nil {
+		t.Fatalf("read meta: %v", err)
+	}
+	var meta map[string]any
+	if err := json.Unmarshal(metaBytes, &meta); err != nil {
+		t.Fatalf("decode meta: %v", err)
+	}
+	capture, _ := meta["capture"].(map[string]any)
+	if capture == nil {
+		t.Fatalf("missing capture meta: %#v", meta)
+	}
+	if got := int(capture["response_bytes"].(float64)); got != len(upstreamBytes) {
+		t.Fatalf("expected combined response_bytes %d, got %#v", len(upstreamBytes), capture["response_bytes"])
+	}
+
+	rounds, _ := capture["rounds"].([]any)
+	if len(rounds) != 2 {
+		t.Fatalf("expected 2 capture rounds, got %d: %#v", len(rounds), capture)
+	}
+	r0, _ := rounds[0].(map[string]any)
+	r1, _ := rounds[1].(map[string]any)
+	if r0["label"] != "deepseek_completion" {
+		t.Fatalf("expected first round label deepseek_completion, got %v", r0["label"])
+	}
+	if r1["label"] != "deepseek_continue" {
+		t.Fatalf("expected second round label deepseek_continue, got %v", r1["label"])
+	}
+}
+
+func TestCaptureRawSampleReturnsErrorWhenNoNewCaptureRecorded(t *testing.T) {
+	root := t.TempDir()
+	t.Setenv("DS2API_RAW_STREAM_SAMPLE_ROOT", root)
+	devcapture.Global().Clear()
+	defer devcapture.Global().Clear()
+
+	recordCapturedResponse("preexisting", "https://chat.deepseek.com/api/v0/chat/completion", http.StatusOK, map[string]any{"model": "deepseek-chat"}, "data: {\"v\":\"old\"}\n\n")
+
+	h := &Handler{OpenAI: stubOpenAIChatCallerWithoutCapture{}}
+	reqBody := `{
+		"sample_id":"My Sample 03",
+		"api_key":"local-key",
+		"model":"deepseek-chat",
+		"message":"广州天气",
+		"stream":true
+	}`
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodPost, "/admin/dev/raw-samples/capture", strings.NewReader(reqBody))
+	h.captureRawSample(rec, req)
+
+	if rec.Code != http.StatusInternalServerError {
+		t.Fatalf("expected 500, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	if !strings.Contains(rec.Body.String(), "no upstream capture was recorded") {
+		t.Fatalf("expected no-capture error, got %s", rec.Body.String())
+	}
+
+	if _, err := os.Stat(filepath.Join(root, "my-sample-03")); !os.IsNotExist(err) {
+		t.Fatalf("expected no sample dir to be created, stat err=%v", err)
+	}
+}
+
+func TestCombineCaptureBodiesPreservesOrderAndSeparators(t *testing.T) {
+	entries := []devcapture.Entry{
+		{ResponseBody: "first"},
+		{ResponseBody: "second"},
+	}
+	got := combineCaptureBodies(entries)
+	if !bytes.Equal(got, []byte("first\nsecond")) {
+		t.Fatalf("unexpected combined body: %q", string(got))
+	}
+}

internal/admin/handler_settings_parse.go

@@ -21,10 +21,11 @@ func boolFrom(v any) bool {
 	}
 }
 
-func parseSettingsUpdateRequest(req map[string]any) (*config.AdminConfig, *config.RuntimeConfig, *config.ResponsesConfig, *config.EmbeddingsConfig, *config.AutoDeleteConfig, map[string]string, map[string]string, error) {
+func parseSettingsUpdateRequest(req map[string]any) (*config.AdminConfig, *config.RuntimeConfig, *config.CompatConfig, *config.ResponsesConfig, *config.EmbeddingsConfig, *config.AutoDeleteConfig, map[string]string, map[string]string, error) {
 	var (
 		adminCfg      *config.AdminConfig
 		runtimeCfg    *config.RuntimeConfig
+		compatCfg     *config.CompatConfig
 		respCfg       *config.ResponsesConfig
 		embCfg        *config.EmbeddingsConfig
 		autoDeleteCfg *config.AutoDeleteConfig
@@ -36,8 +37,8 @@ func parseSettingsUpdateRequest(req map[string]any) (*config.AdminConfig, *confi
 		cfg := &config.AdminConfig{}
 		if v, exists := raw["jwt_expire_hours"]; exists {
 			n := intFrom(v)
-			if n < 1 || n > 720 {
-				return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("admin.jwt_expire_hours must be between 1 and 720")
+			if err := config.ValidateIntRange("admin.jwt_expire_hours", n, 1, 720, true); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
 			}
 			cfg.JWTExpireHours = n
 		}
@@ -48,44 +49,57 @@ func parseSettingsUpdateRequest(req map[string]any) (*config.AdminConfig, *confi
 		cfg := &config.RuntimeConfig{}
 		if v, exists := raw["account_max_inflight"]; exists {
 			n := intFrom(v)
-			if n < 1 || n > 256 {
-				return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("runtime.account_max_inflight must be between 1 and 256")
+			if err := config.ValidateIntRange("runtime.account_max_inflight", n, 1, 256, true); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
 			}
 			cfg.AccountMaxInflight = n
 		}
 		if v, exists := raw["account_max_queue"]; exists {
 			n := intFrom(v)
-			if n < 1 || n > 200000 {
-				return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("runtime.account_max_queue must be between 1 and 200000")
+			if err := config.ValidateIntRange("runtime.account_max_queue", n, 1, 200000, true); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
 			}
 			cfg.AccountMaxQueue = n
 		}
 		if v, exists := raw["global_max_inflight"]; exists {
 			n := intFrom(v)
-			if n < 1 || n > 200000 {
-				return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("runtime.global_max_inflight must be between 1 and 200000")
+			if err := config.ValidateIntRange("runtime.global_max_inflight", n, 1, 200000, true); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
 			}
 			cfg.GlobalMaxInflight = n
 		}
 		if v, exists := raw["token_refresh_interval_hours"]; exists {
 			n := intFrom(v)
-			if n < 1 || n > 720 {
-				return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("runtime.token_refresh_interval_hours must be between 1 and 720")
+			if err := config.ValidateIntRange("runtime.token_refresh_interval_hours", n, 1, 720, true); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
 			}
 			cfg.TokenRefreshIntervalHours = n
 		}
 		if cfg.AccountMaxInflight > 0 && cfg.GlobalMaxInflight > 0 && cfg.GlobalMaxInflight < cfg.AccountMaxInflight {
-			return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("runtime.global_max_inflight must be >= runtime.account_max_inflight")
+			return nil, nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("runtime.global_max_inflight must be >= runtime.account_max_inflight")
 		}
 		runtimeCfg = cfg
 	}
 
+	if raw, ok := req["compat"].(map[string]any); ok {
+		cfg := &config.CompatConfig{}
+		if v, exists := raw["wide_input_strict_output"]; exists {
+			b := boolFrom(v)
+			cfg.WideInputStrictOutput = &b
+		}
+		if v, exists := raw["strip_reference_markers"]; exists {
+			b := boolFrom(v)
+			cfg.StripReferenceMarkers = &b
+		}
+		compatCfg = cfg
+	}
+
 	if raw, ok := req["responses"].(map[string]any); ok {
 		cfg := &config.ResponsesConfig{}
 		if v, exists := raw["store_ttl_seconds"]; exists {
 			n := intFrom(v)
-			if n < 30 || n > 86400 {
-				return nil, nil, nil, nil, nil, nil, nil, fmt.Errorf("responses.store_ttl_seconds must be between 30 and 86400")
+			if err := config.ValidateIntRange("responses.store_ttl_seconds", n, 30, 86400, true); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
 			}
 			cfg.StoreTTLSeconds = n
 		}
@@ -96,6 +110,9 @@ func parseSettingsUpdateRequest(req map[string]any) (*config.AdminConfig, *confi
 		cfg := &config.EmbeddingsConfig{}
 		if v, exists := raw["provider"]; exists {
 			p := strings.TrimSpace(fmt.Sprintf("%v", v))
+			if err := config.ValidateTrimmedString("embeddings.provider", p, false); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
+			}
 			cfg.Provider = p
 		}
 		embCfg = cfg
@@ -127,11 +144,21 @@ func parseSettingsUpdateRequest(req map[string]any) (*config.AdminConfig, *confi
 
 	if raw, ok := req["auto_delete"].(map[string]any); ok {
 		cfg := &config.AutoDeleteConfig{}
+		if v, exists := raw["mode"]; exists {
+			mode := strings.ToLower(strings.TrimSpace(fmt.Sprintf("%v", v)))
+			if err := config.ValidateAutoDeleteMode(mode); err != nil {
+				return nil, nil, nil, nil, nil, nil, nil, nil, err
+			}
+			if mode == "" {
+				mode = "none"
+			}
+			cfg.Mode = mode
+		}
 		if v, exists := raw["sessions"]; exists {
 			cfg.Sessions = boolFrom(v)
 		}
 		autoDeleteCfg = cfg
 	}
 
-	return adminCfg, runtimeCfg, respCfg, embCfg, autoDeleteCfg, claudeMap, aliasMap, nil
+	return adminCfg, runtimeCfg, compatCfg, respCfg, embCfg, autoDeleteCfg, claudeMap, aliasMap, nil
 }

internal/admin/handler_settings_read.go

@@ -26,6 +26,7 @@ func (h *Handler) getSettings(w http.ResponseWriter, _ *http.Request) {
 			"global_max_inflight":          h.Store.RuntimeGlobalMaxInflight(recommended),
 			"token_refresh_interval_hours": h.Store.RuntimeTokenRefreshIntervalHours(),
 		},
+		"compat":            snap.Compat,
 		"responses":         snap.Responses,
 		"embeddings":        snap.Embeddings,
 		"auto_delete":       snap.AutoDelete,

internal/admin/handler_settings_test.go

@@ -82,6 +82,28 @@ func TestUpdateSettingsValidationRejectsTokenRefreshInterval(t *testing.T) {
 	}
 }
 
+func TestUpdateSettingsAllowsEmptyEmbeddingsProvider(t *testing.T) {
+	h := newAdminTestHandler(t, `{"keys":["k1"]}`)
+	payload := map[string]any{
+		"responses": map[string]any{
+			"store_ttl_seconds": 600,
+		},
+		"embeddings": map[string]any{
+			"provider": "",
+		},
+	}
+	b, _ := json.Marshal(payload)
+	req := httptest.NewRequest(http.MethodPut, "/admin/settings", bytes.NewReader(b))
+	rec := httptest.NewRecorder()
+	h.updateSettings(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d body=%s", rec.Code, rec.Body.String())
+	}
+	if got := h.Store.Snapshot().Responses.StoreTTLSeconds; got != 600 {
+		t.Fatalf("store_ttl_seconds=%d want=600", got)
+	}
+}
+
 func TestUpdateSettingsValidationWithMergedRuntimeSnapshot(t *testing.T) {
 	h := newAdminTestHandler(t, `{
 		"keys":["k1"],
@@ -132,6 +154,31 @@ func TestUpdateSettingsWithoutRuntimeSkipsMergedRuntimeValidation(t *testing.T)
 	}
 }
 
+func TestUpdateSettingsAutoDeleteMode(t *testing.T) {
+	h := newAdminTestHandler(t, `{"keys":["k1"],"auto_delete":{"sessions":true}}`)
+
+	payload := map[string]any{
+		"auto_delete": map[string]any{
+			"mode": "single",
+		},
+	}
+	b, _ := json.Marshal(payload)
+	req := httptest.NewRequest(http.MethodPut, "/admin/settings", bytes.NewReader(b))
+	rec := httptest.NewRecorder()
+	h.updateSettings(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
+	}
+
+	snap := h.Store.Snapshot()
+	if got := snap.AutoDelete.Mode; got != "single" {
+		t.Fatalf("auto_delete.mode=%q want=single", got)
+	}
+	if got := h.Store.AutoDeleteMode(); got != "single" {
+		t.Fatalf("AutoDeleteMode()=%q want=single", got)
+	}
+}
+
 func TestUpdateSettingsHotReloadRuntime(t *testing.T) {
 	h := newAdminTestHandler(t, `{
 		"keys":["k1"],

internal/admin/handler_settings_write.go

@@ -17,7 +17,7 @@ func (h *Handler) updateSettings(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	adminCfg, runtimeCfg, responsesCfg, embeddingsCfg, autoDeleteCfg, claudeMap, aliasMap, err := parseSettingsUpdateRequest(req)
+	adminCfg, runtimeCfg, compatCfg, responsesCfg, embeddingsCfg, autoDeleteCfg, claudeMap, aliasMap, err := parseSettingsUpdateRequest(req)
 	if err != nil {
 		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": err.Error()})
 		return
@@ -49,6 +49,14 @@ func (h *Handler) updateSettings(w http.ResponseWriter, r *http.Request) {
 				c.Runtime.TokenRefreshIntervalHours = runtimeCfg.TokenRefreshIntervalHours
 			}
 		}
+		if compatCfg != nil {
+			if compatCfg.WideInputStrictOutput != nil {
+				c.Compat.WideInputStrictOutput = compatCfg.WideInputStrictOutput
+			}
+			if compatCfg.StripReferenceMarkers != nil {
+				c.Compat.StripReferenceMarkers = compatCfg.StripReferenceMarkers
+			}
+		}
 		if responsesCfg != nil && responsesCfg.StoreTTLSeconds > 0 {
 			c.Responses.StoreTTLSeconds = responsesCfg.StoreTTLSeconds
 		}
@@ -56,6 +64,7 @@ func (h *Handler) updateSettings(w http.ResponseWriter, r *http.Request) {
 			c.Embeddings.Provider = strings.TrimSpace(embeddingsCfg.Provider)
 		}
 		if autoDeleteCfg != nil {
+			c.AutoDelete.Mode = autoDeleteCfg.Mode
 			c.AutoDelete.Sessions = autoDeleteCfg.Sessions
 		}
 		if claudeMap != nil {

internal/admin/settings_validation.go

@@ -1,7 +1,6 @@
 package admin
 
 import (
-	"fmt"
 	"strings"
 
 	"ds2api/internal/config"
@@ -16,36 +15,9 @@ func normalizeSettingsConfig(c *config.Config) {
 }
 
 func validateSettingsConfig(c config.Config) error {
-	if c.Admin.JWTExpireHours != 0 && (c.Admin.JWTExpireHours < 1 || c.Admin.JWTExpireHours > 720) {
-		return fmt.Errorf("admin.jwt_expire_hours must be between 1 and 720")
-	}
-	if err := validateRuntimeSettings(c.Runtime); err != nil {
-		return err
-	}
-	if c.Responses.StoreTTLSeconds != 0 && (c.Responses.StoreTTLSeconds < 30 || c.Responses.StoreTTLSeconds > 86400) {
-		return fmt.Errorf("responses.store_ttl_seconds must be between 30 and 86400")
-	}
-	if c.Embeddings.Provider != "" && strings.TrimSpace(c.Embeddings.Provider) == "" {
-		return fmt.Errorf("embeddings.provider cannot be empty")
-	}
-	return nil
+	return config.ValidateConfig(c)
 }
 
 func validateRuntimeSettings(runtime config.RuntimeConfig) error {
-	if runtime.AccountMaxInflight != 0 && (runtime.AccountMaxInflight < 1 || runtime.AccountMaxInflight > 256) {
-		return fmt.Errorf("runtime.account_max_inflight must be between 1 and 256")
-	}
-	if runtime.AccountMaxQueue != 0 && (runtime.AccountMaxQueue < 1 || runtime.AccountMaxQueue > 200000) {
-		return fmt.Errorf("runtime.account_max_queue must be between 1 and 200000")
-	}
-	if runtime.GlobalMaxInflight != 0 && (runtime.GlobalMaxInflight < 1 || runtime.GlobalMaxInflight > 200000) {
-		return fmt.Errorf("runtime.global_max_inflight must be between 1 and 200000")
-	}
-	if runtime.TokenRefreshIntervalHours != 0 && (runtime.TokenRefreshIntervalHours < 1 || runtime.TokenRefreshIntervalHours > 720) {
-		return fmt.Errorf("runtime.token_refresh_interval_hours must be between 1 and 720")
-	}
-	if runtime.AccountMaxInflight > 0 && runtime.GlobalMaxInflight > 0 && runtime.GlobalMaxInflight < runtime.AccountMaxInflight {
-		return fmt.Errorf("runtime.global_max_inflight must be >= runtime.account_max_inflight")
-	}
-	return nil
+	return config.ValidateRuntimeConfig(runtime)
 }

internal/admin/token_runtime_http_test.go

@@ -17,7 +17,6 @@ import (
 func newHTTPAdminHarness(t *testing.T, rawConfig string, ds DeepSeekCaller) http.Handler {
 	t.Helper()
 	t.Setenv("DS2API_CONFIG_JSON", rawConfig)
-	t.Setenv("CONFIG_JSON", "")
 	store := config.LoadStore()
 	h := &Handler{
 		Store: store,

internal/compat/go_compat_test.go

@@ -32,23 +32,36 @@ func TestGoCompatSSEFixtures(t *testing.T) {
 		mustLoadJSON(t, fixturePath, &fixture)
 
 		var expected struct {
-			Parts    []map[string]any `json:"parts"`
-			Finished bool             `json:"finished"`
-			NewType  string           `json:"new_type"`
+			Parts         []map[string]any `json:"parts"`
+			Finished      bool             `json:"finished"`
+			NewType       string           `json:"new_type"`
+			ContentFilter bool             `json:"content_filter"`
+			OutputTokens  int              `json:"output_tokens"`
+			ErrorMessage  string           `json:"error_message"`
 		}
 		mustLoadJSON(t, expectedPath, &expected)
 
-		parts, finished, newType := sse.ParseSSEChunkForContent(fixture.Chunk, fixture.ThinkingEnable, fixture.CurrentType)
-		gotParts := make([]map[string]any, 0, len(parts))
-		for _, p := range parts {
+		raw, err := json.Marshal(fixture.Chunk)
+		if err != nil {
+			t.Fatalf("marshal fixture %s failed: %v", name, err)
+		}
+		res := sse.ParseDeepSeekContentLine(append([]byte("data: "), raw...), fixture.ThinkingEnable, fixture.CurrentType)
+		gotParts := make([]map[string]any, 0, len(res.Parts))
+		for _, p := range res.Parts {
 			gotParts = append(gotParts, map[string]any{
 				"text": p.Text,
 				"type": p.Type,
 			})
 		}
-		if !reflect.DeepEqual(gotParts, expected.Parts) || finished != expected.Finished || newType != expected.NewType {
-			t.Fatalf("fixture %s mismatch:\n got parts=%#v finished=%v newType=%q\nwant parts=%#v finished=%v newType=%q",
-				name, gotParts, finished, newType, expected.Parts, expected.Finished, expected.NewType)
+		if !reflect.DeepEqual(gotParts, expected.Parts) ||
+			res.Stop != expected.Finished ||
+			res.NextType != expected.NewType ||
+			res.ContentFilter != expected.ContentFilter ||
+			res.OutputTokens != expected.OutputTokens ||
+			res.ErrorMessage != expected.ErrorMessage {
+			t.Fatalf("fixture %s mismatch:\n got parts=%#v finished=%v newType=%q contentFilter=%v outputTokens=%d errorMessage=%q\nwant parts=%#v finished=%v newType=%q contentFilter=%v outputTokens=%d errorMessage=%q",
+				name, gotParts, res.Stop, res.NextType, res.ContentFilter, res.OutputTokens, res.ErrorMessage,
+				expected.Parts, expected.Finished, expected.NewType, expected.ContentFilter, expected.OutputTokens, expected.ErrorMessage)
 		}
 	}
 }

internal/config/codec.go

@@ -35,7 +35,7 @@ func (c Config) MarshalJSON() ([]byte, error) {
 	if c.Runtime.AccountMaxInflight > 0 || c.Runtime.AccountMaxQueue > 0 || c.Runtime.GlobalMaxInflight > 0 || c.Runtime.TokenRefreshIntervalHours > 0 {
 		m["runtime"] = c.Runtime
 	}
-	if c.Compat.WideInputStrictOutput != nil {
+	if c.Compat.WideInputStrictOutput != nil || c.Compat.StripReferenceMarkers != nil {
 		m["compat"] = c.Compat
 	}
 	if c.Responses.StoreTTLSeconds > 0 {
@@ -137,6 +137,7 @@ func (c Config) Clone() Config {
 		Runtime:        c.Runtime,
 		Compat: CompatConfig{
 			WideInputStrictOutput: cloneBoolPtr(c.Compat.WideInputStrictOutput),
+			StripReferenceMarkers: cloneBoolPtr(c.Compat.StripReferenceMarkers),
 		},
 		Responses:        c.Responses,
 		Embeddings:       c.Embeddings,

internal/config/config.go

@@ -52,6 +52,7 @@ func (c *Config) DropInvalidAccounts() {
 
 type CompatConfig struct {
 	WideInputStrictOutput *bool `json:"wide_input_strict_output,omitempty"`
+	StripReferenceMarkers *bool `json:"strip_reference_markers,omitempty"`
 }
 
 type AdminConfig struct {
@@ -76,5 +77,6 @@ type EmbeddingsConfig struct {
 }
 
 type AutoDeleteConfig struct {
-	Sessions bool `json:"sessions"`
+	Mode     string `json:"mode,omitempty"`
+	Sessions bool   `json:"sessions,omitempty"`
 }

internal/config/config_edge_test.go

@@ -97,6 +97,8 @@ func TestLowerFunction(t *testing.T) {
 // ─── Config.MarshalJSON / UnmarshalJSON roundtrip ────────────────────
 
 func TestConfigJSONRoundtrip(t *testing.T) {
+	trueVal := true
+	falseVal := false
 	cfg := Config{
 		Keys:     []string{"key1", "key2"},
 		Accounts: []Account{{Email: "user@example.com", Password: "pass", Token: "tok"}},
@@ -104,9 +106,16 @@ func TestConfigJSONRoundtrip(t *testing.T) {
 			"fast": "deepseek-chat",
 			"slow": "deepseek-reasoner",
 		},
+		AutoDelete: AutoDeleteConfig{
+			Mode: "single",
+		},
 		Runtime: RuntimeConfig{
 			TokenRefreshIntervalHours: 12,
 		},
+		Compat: CompatConfig{
+			WideInputStrictOutput: &trueVal,
+			StripReferenceMarkers: &falseVal,
+		},
 		VercelSyncHash: "hash123",
 		VercelSyncTime: 1234567890,
 		AdditionalFields: map[string]any{
@@ -136,6 +145,15 @@ func TestConfigJSONRoundtrip(t *testing.T) {
 	if decoded.Runtime.TokenRefreshIntervalHours != 12 {
 		t.Fatalf("unexpected runtime refresh interval: %#v", decoded.Runtime.TokenRefreshIntervalHours)
 	}
+	if decoded.AutoDelete.Mode != "single" {
+		t.Fatalf("unexpected auto delete mode: %#v", decoded.AutoDelete.Mode)
+	}
+	if decoded.Compat.WideInputStrictOutput == nil || !*decoded.Compat.WideInputStrictOutput {
+		t.Fatalf("unexpected compat wide_input_strict_output: %#v", decoded.Compat.WideInputStrictOutput)
+	}
+	if decoded.Compat.StripReferenceMarkers == nil || *decoded.Compat.StripReferenceMarkers {
+		t.Fatalf("unexpected compat strip_reference_markers: %#v", decoded.Compat.StripReferenceMarkers)
+	}
 	if decoded.VercelSyncHash != "hash123" {
 		t.Fatalf("unexpected vercel sync hash: %q", decoded.VercelSyncHash)
 	}
@@ -144,6 +162,29 @@ func TestConfigJSONRoundtrip(t *testing.T) {
 	}
 }
 
+func TestAutoDeleteModeResolution(t *testing.T) {
+	tests := []struct {
+		name string
+		cfg  AutoDeleteConfig
+		want string
+	}{
+		{name: "default", cfg: AutoDeleteConfig{}, want: "none"},
+		{name: "legacy all", cfg: AutoDeleteConfig{Sessions: true}, want: "all"},
+		{name: "single", cfg: AutoDeleteConfig{Mode: "single"}, want: "single"},
+		{name: "all", cfg: AutoDeleteConfig{Mode: "all"}, want: "all"},
+		{name: "none", cfg: AutoDeleteConfig{Mode: "none"}, want: "none"},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			store := &Store{cfg: Config{AutoDelete: tc.cfg}}
+			if got := store.AutoDeleteMode(); got != tc.want {
+				t.Fatalf("AutoDeleteMode()=%q want=%q", got, tc.want)
+			}
+		})
+	}
+}
+
 func TestConfigUnmarshalJSONPreservesUnknownFields(t *testing.T) {
 	raw := `{"keys":["k1"],"accounts":[],"my_custom_field":"hello","number_field":42}`
 	var cfg Config
@@ -162,12 +203,16 @@ func TestConfigUnmarshalJSONPreservesUnknownFields(t *testing.T) {
 // ─── Config.Clone ────────────────────────────────────────────────────
 
 func TestConfigCloneIsDeepCopy(t *testing.T) {
+	falseVal := false
 	cfg := Config{
 		Keys:     []string{"key1"},
 		Accounts: []Account{{Email: "user@test.com", Token: "token"}},
 		ClaudeMapping: map[string]string{
 			"fast": "deepseek-chat",
 		},
+		Compat: CompatConfig{
+			StripReferenceMarkers: &falseVal,
+		},
 		AdditionalFields: map[string]any{"custom": "value"},
 	}
 
@@ -177,6 +222,9 @@ func TestConfigCloneIsDeepCopy(t *testing.T) {
 	cfg.Keys[0] = "modified"
 	cfg.Accounts[0].Email = "modified@test.com"
 	cfg.ClaudeMapping["fast"] = "modified-model"
+	if cfg.Compat.StripReferenceMarkers != nil {
+		*cfg.Compat.StripReferenceMarkers = true
+	}
 
 	// Cloned should not be affected
 	if cloned.Keys[0] != "key1" {
@@ -188,6 +236,9 @@ func TestConfigCloneIsDeepCopy(t *testing.T) {
 	if cloned.ClaudeMapping["fast"] != "deepseek-chat" {
 		t.Fatalf("clone claude mapping was affected: %#v", cloned.ClaudeMapping)
 	}
+	if cloned.Compat.StripReferenceMarkers == nil || *cloned.Compat.StripReferenceMarkers {
+		t.Fatalf("clone compat was affected: %#v", cloned.Compat.StripReferenceMarkers)
+	}
 }
 
 func TestConfigCloneNilMaps(t *testing.T) {
@@ -359,6 +410,39 @@ func TestStoreCompatWideInputStrictOutputCanDisable(t *testing.T) {
 	}
 }
 
+func TestStoreCompatStripReferenceMarkersDefaultTrue(t *testing.T) {
+	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[]}`)
+	store := LoadStore()
+	if !store.CompatStripReferenceMarkers() {
+		t.Fatal("expected default strip_reference_markers=true when unset")
+	}
+}
+
+func TestStoreCompatStripReferenceMarkersCanDisable(t *testing.T) {
+	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[],"compat":{"strip_reference_markers":false}}`)
+	store := LoadStore()
+	if store.CompatStripReferenceMarkers() {
+		t.Fatal("expected strip_reference_markers=false when explicitly configured")
+	}
+
+	snap := store.Snapshot()
+	data, err := snap.MarshalJSON()
+	if err != nil {
+		t.Fatalf("marshal failed: %v", err)
+	}
+	var out map[string]any
+	if err := json.Unmarshal(data, &out); err != nil {
+		t.Fatalf("decode failed: %v", err)
+	}
+	rawCompat, ok := out["compat"].(map[string]any)
+	if !ok {
+		t.Fatalf("expected compat in marshaled output, got %#v", out)
+	}
+	if rawCompat["strip_reference_markers"] != false {
+		t.Fatalf("expected explicit false in compat, got %#v", rawCompat)
+	}
+}
+
 func TestStoreIsEnvBacked(t *testing.T) {
 	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[]}`)
 	store := LoadStore()

internal/config/config_test.go

@@ -67,7 +67,6 @@ func TestLoadStorePreservesFileBackedTokensForRuntime(t *testing.T) {
 	}
 
 	t.Setenv("DS2API_CONFIG_JSON", "")
-	t.Setenv("CONFIG_JSON", "")
 	t.Setenv("DS2API_CONFIG_PATH", tmp.Name())
 
 	store := LoadStore()
@@ -80,6 +79,31 @@ func TestLoadStorePreservesFileBackedTokensForRuntime(t *testing.T) {
 	}
 }
 
+func TestLoadStoreIgnoresLegacyConfigJSONEnv(t *testing.T) {
+	tmp, err := os.CreateTemp(t.TempDir(), "config-*.json")
+	if err != nil {
+		t.Fatalf("create temp config: %v", err)
+	}
+	path := tmp.Name()
+	_ = tmp.Close()
+	_ = os.Remove(path)
+
+	t.Setenv("DS2API_CONFIG_JSON", "")
+	t.Setenv("CONFIG_JSON", `{"keys":["legacy-key"],"accounts":[{"email":"legacy@example.com","password":"p"}]}`)
+	t.Setenv("DS2API_CONFIG_PATH", path)
+
+	store := LoadStore()
+	if store.HasEnvConfigSource() {
+		t.Fatal("expected legacy CONFIG_JSON to be ignored")
+	}
+	if store.IsEnvBacked() {
+		t.Fatal("expected store to remain file-backed/empty when only CONFIG_JSON is set")
+	}
+	if len(store.Keys()) != 0 || len(store.Accounts()) != 0 {
+		t.Fatalf("expected ignored legacy env to leave store empty, got keys=%d accounts=%d", len(store.Keys()), len(store.Accounts()))
+	}
+}
+
 func TestEnvBackedStoreWritebackBootstrapsMissingConfigFile(t *testing.T) {
 	tmp, err := os.CreateTemp(t.TempDir(), "config-*.json")
 	if err != nil {
@@ -90,7 +114,6 @@ func TestEnvBackedStoreWritebackBootstrapsMissingConfigFile(t *testing.T) {
 	_ = os.Remove(path)
 
 	t.Setenv("DS2API_CONFIG_JSON", `{"keys":["k1"],"accounts":[{"email":"seed@example.com","password":"p"}]}`)
-	t.Setenv("CONFIG_JSON", "")
 	t.Setenv("DS2API_CONFIG_PATH", path)
 	t.Setenv("DS2API_ENV_WRITEBACK", "1")
 
@@ -135,7 +158,6 @@ func TestEnvBackedStoreWritebackDoesNotBootstrapOnInvalidEnvJSON(t *testing.T) {
 	_ = os.Remove(path)
 
 	t.Setenv("DS2API_CONFIG_JSON", "{invalid-json")
-	t.Setenv("CONFIG_JSON", "")
 	t.Setenv("DS2API_CONFIG_PATH", path)
 	t.Setenv("DS2API_ENV_WRITEBACK", "1")
 
@@ -154,6 +176,56 @@ func TestEnvBackedStoreWritebackDoesNotBootstrapOnInvalidEnvJSON(t *testing.T) {
 	}
 }
 
+func TestEnvBackedStoreWritebackDoesNotBootstrapOnInvalidSemanticConfig(t *testing.T) {
+	tmp, err := os.CreateTemp(t.TempDir(), "config-*.json")
+	if err != nil {
+		t.Fatalf("create temp config: %v", err)
+	}
+	path := tmp.Name()
+	_ = tmp.Close()
+	_ = os.Remove(path)
+
+	t.Setenv("DS2API_CONFIG_JSON", `{
+		"keys":["k1"],
+		"accounts":[{"email":"seed@example.com","password":"p"}],
+		"runtime":{"account_max_inflight":300}
+	}`)
+	t.Setenv("DS2API_CONFIG_PATH", path)
+	t.Setenv("DS2API_ENV_WRITEBACK", "1")
+
+	cfg, fromEnv, loadErr := loadConfig()
+	if loadErr == nil {
+		t.Fatalf("expected loadConfig error for invalid runtime config")
+	}
+	if !fromEnv {
+		t.Fatalf("expected fromEnv=true when env config is the source")
+	}
+	if !strings.Contains(loadErr.Error(), "runtime.account_max_inflight") {
+		t.Fatalf("expected runtime validation error, got %v", loadErr)
+	}
+	if len(cfg.Keys) != 1 || len(cfg.Accounts) != 1 {
+		t.Fatalf("expected env config to be parsed before validation, got keys=%d accounts=%d", len(cfg.Keys), len(cfg.Accounts))
+	}
+	if _, statErr := os.Stat(path); !errors.Is(statErr, os.ErrNotExist) {
+		t.Fatalf("expected invalid config not to be bootstrapped, stat err=%v", statErr)
+	}
+}
+
+func TestLoadStoreWithErrorRejectsInvalidRuntimeConfig(t *testing.T) {
+	t.Setenv("DS2API_CONFIG_JSON", `{
+		"keys":["k1"],
+		"accounts":[{"email":"u@example.com","password":"p"}],
+		"runtime":{"account_max_inflight":300}
+	}`)
+	t.Setenv("DS2API_ENV_WRITEBACK", "0")
+
+	if _, err := LoadStoreWithError(); err == nil {
+		t.Fatal("expected LoadStoreWithError to reject invalid runtime config")
+	} else if !strings.Contains(err.Error(), "runtime.account_max_inflight") {
+		t.Fatalf("expected runtime validation error, got %v", err)
+	}
+}
+
 func TestEnvBackedStoreWritebackFallsBackToPersistedFileOnInvalidEnvJSON(t *testing.T) {
 	tmp, err := os.CreateTemp(t.TempDir(), "config-*.json")
 	if err != nil {
@@ -166,7 +238,6 @@ func TestEnvBackedStoreWritebackFallsBackToPersistedFileOnInvalidEnvJSON(t *test
 	_ = tmp.Close()
 
 	t.Setenv("DS2API_CONFIG_JSON", "{invalid-json")
-	t.Setenv("CONFIG_JSON", "")
 	t.Setenv("DS2API_CONFIG_PATH", path)
 	t.Setenv("DS2API_ENV_WRITEBACK", "1")
 
@@ -265,7 +336,6 @@ func TestParseConfigStringSupportsRawURLBase64(t *testing.T) {
 func TestLoadConfigOnVercelWithoutConfigFileFallsBackToMemory(t *testing.T) {
 	t.Setenv("VERCEL", "1")
 	t.Setenv("DS2API_CONFIG_JSON", "")
-	t.Setenv("CONFIG_JSON", "")
 	t.Setenv("DS2API_CONFIG_PATH", "testdata/does-not-exist.json")
 
 	cfg, fromEnv, err := loadConfig()
@@ -293,7 +363,6 @@ func TestAccountTestStatusIsRuntimeOnlyAndNotPersisted(t *testing.T) {
 	}
 
 	t.Setenv("DS2API_CONFIG_JSON", "")
-	t.Setenv("CONFIG_JSON", "")
 	t.Setenv("DS2API_CONFIG_PATH", tmp.Name())
 
 	store := LoadStore()

internal/config/dotenv.go

@@ -0,0 +1,137 @@
+package config
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// LoadDotEnv loads environment variables from .env in the current working
+// directory without overriding variables that are already set.
+func LoadDotEnv() error {
+	return loadDotEnvFromPath(filepath.Join(BaseDir(), ".env"))
+}
+
+func loadDotEnvFromPath(path string) error {
+	content, err := os.ReadFile(path)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil
+		}
+		return err
+	}
+
+	lines := strings.Split(strings.ReplaceAll(string(content), "\r\n", "\n"), "\n")
+	for i, rawLine := range lines {
+		line := strings.TrimSpace(rawLine)
+		if i == 0 {
+			line = strings.TrimPrefix(line, "\ufeff")
+		}
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		if strings.HasPrefix(line, "export ") {
+			line = strings.TrimSpace(strings.TrimPrefix(line, "export "))
+		}
+
+		key, value, ok := strings.Cut(line, "=")
+		if !ok {
+			return fmt.Errorf("%s:%d invalid env assignment", path, i+1)
+		}
+		key = strings.TrimSpace(key)
+		if key == "" {
+			return fmt.Errorf("%s:%d empty env key", path, i+1)
+		}
+		if _, exists := os.LookupEnv(key); exists {
+			continue
+		}
+		if err := os.Setenv(key, normalizeDotEnvValue(trimDotEnvValue(strings.TrimSpace(value)))); err != nil {
+			return fmt.Errorf("%s:%d set env %q: %w", path, i+1, key, err)
+		}
+	}
+
+	return nil
+}
+
+// Preserve quoted values, but drop Compose-style inline comments from unquoted values.
+func trimDotEnvValue(raw string) string {
+	if raw == "" {
+		return raw
+	}
+
+	switch raw[0] {
+	case '"':
+		if trimmed, ok := trimQuotedDotEnvValue(raw, '"'); ok {
+			return trimmed
+		}
+	case '\'':
+		if trimmed, ok := trimQuotedDotEnvValue(raw, '\''); ok {
+			return trimmed
+		}
+	default:
+		if idx := inlineDotEnvCommentStart(raw); idx >= 0 {
+			return strings.TrimSpace(raw[:idx])
+		}
+	}
+
+	return raw
+}
+
+func trimQuotedDotEnvValue(raw string, quote byte) (string, bool) {
+	escaped := false
+	for i := 1; i < len(raw); i++ {
+		ch := raw[i]
+		if quote == '"' && escaped {
+			escaped = false
+			continue
+		}
+		if quote == '"' && ch == '\\' {
+			escaped = true
+			continue
+		}
+		if ch == quote {
+			return strings.TrimSpace(raw[:i+1]), true
+		}
+	}
+	return raw, false
+}
+
+func inlineDotEnvCommentStart(raw string) int {
+	for i := 1; i < len(raw); i++ {
+		if raw[i] == '#' && isDotEnvCommentSpacer(raw[i-1]) {
+			return i
+		}
+	}
+	return -1
+}
+
+func isDotEnvCommentSpacer(b byte) bool {
+	return b == ' ' || b == '\t'
+}
+
+func normalizeDotEnvValue(raw string) string {
+	if len(raw) < 2 {
+		return raw
+	}
+	first := raw[0]
+	last := raw[len(raw)-1]
+	if (first != '"' || last != '"') && (first != '\'' || last != '\'') {
+		return raw
+	}
+
+	raw = raw[1 : len(raw)-1]
+	if first == '\'' {
+		return raw
+	}
+
+	replacer := strings.NewReplacer(
+		`\\`, `\`,
+		`\n`, "\n",
+		`\r`, "\r",
+		`\t`, "\t",
+		`\"`, `"`,
+	)
+	return replacer.Replace(raw)
+}

internal/config/dotenv_test.go

@@ -0,0 +1,135 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestLoadDotEnvLoadsWorkingDirectoryFileWithoutOverridingExistingEnv(t *testing.T) {
+	dir := t.TempDir()
+	oldWD, err := os.Getwd()
+	if err != nil {
+		t.Fatalf("getwd: %v", err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatalf("chdir temp dir: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = os.Chdir(oldWD)
+	})
+
+	const newKey = "DS2API_TEST_DOTENV_NEW"
+	const keepKey = "DS2API_TEST_DOTENV_KEEP"
+	const quotedKey = "DS2API_TEST_DOTENV_QUOTED"
+
+	unsetEnv(t, newKey)
+	unsetEnv(t, quotedKey)
+	t.Setenv(keepKey, "from-env")
+
+	content := "DS2API_TEST_DOTENV_NEW=from-file\n" +
+		"DS2API_TEST_DOTENV_KEEP=from-file\n" +
+		"DS2API_TEST_DOTENV_QUOTED=\"line1\\nline2\"\n"
+	if err := os.WriteFile(filepath.Join(dir, ".env"), []byte(content), 0o644); err != nil {
+		t.Fatalf("write .env: %v", err)
+	}
+
+	if err := LoadDotEnv(); err != nil {
+		t.Fatalf("LoadDotEnv() error: %v", err)
+	}
+
+	if got := os.Getenv(newKey); got != "from-file" {
+		t.Fatalf("expected %s from .env, got %q", newKey, got)
+	}
+	if got := os.Getenv(keepKey); got != "from-env" {
+		t.Fatalf("expected existing env to win, got %q", got)
+	}
+	if got := os.Getenv(quotedKey); got != "line1\nline2" {
+		t.Fatalf("expected quoted newline decoding, got %q", got)
+	}
+}
+
+func TestLoadDotEnvIgnoresMissingFile(t *testing.T) {
+	dir := t.TempDir()
+	oldWD, err := os.Getwd()
+	if err != nil {
+		t.Fatalf("getwd: %v", err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatalf("chdir temp dir: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = os.Chdir(oldWD)
+	})
+
+	if err := LoadDotEnv(); err != nil {
+		t.Fatalf("expected missing .env to be ignored, got %v", err)
+	}
+}
+
+func TestLoadDotEnvStripsInlineCommentsFromUnquotedValues(t *testing.T) {
+	dir := t.TempDir()
+	oldWD, err := os.Getwd()
+	if err != nil {
+		t.Fatalf("getwd: %v", err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatalf("chdir temp dir: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = os.Chdir(oldWD)
+	})
+
+	const plainKey = "DS2API_TEST_DOTENV_PLAIN"
+	const hashKey = "DS2API_TEST_DOTENV_HASH"
+	const quotedKey = "DS2API_TEST_DOTENV_QUOTED_COMMENT"
+	const exportKey = "DS2API_TEST_DOTENV_EXPORT"
+
+	unsetEnv(t, plainKey)
+	unsetEnv(t, hashKey)
+	unsetEnv(t, quotedKey)
+	unsetEnv(t, exportKey)
+
+	content := strings.Join([]string{
+		plainKey + "=5001 # local",
+		hashKey + "=5001#local",
+		quotedKey + `="5001 # local" # keep the inner hash`,
+		"export " + exportKey + "=enabled # exported",
+	}, "\n") + "\n"
+	if err := os.WriteFile(filepath.Join(dir, ".env"), []byte(content), 0o644); err != nil {
+		t.Fatalf("write .env: %v", err)
+	}
+
+	if err := LoadDotEnv(); err != nil {
+		t.Fatalf("LoadDotEnv() error: %v", err)
+	}
+
+	if got := os.Getenv(plainKey); got != "5001" {
+		t.Fatalf("expected inline comment to be stripped, got %q", got)
+	}
+	if got := os.Getenv(hashKey); got != "5001#local" {
+		t.Fatalf("expected hash without preceding whitespace to remain, got %q", got)
+	}
+	if got := os.Getenv(quotedKey); got != "5001 # local" {
+		t.Fatalf("expected quoted value to preserve hash text, got %q", got)
+	}
+	if got := os.Getenv(exportKey); got != "enabled" {
+		t.Fatalf("expected export syntax to load, got %q", got)
+	}
+}
+
+func unsetEnv(t *testing.T, key string) {
+	t.Helper()
+	old, had := os.LookupEnv(key)
+	if err := os.Unsetenv(key); err != nil {
+		t.Fatalf("unset %s: %v", key, err)
+	}
+	t.Cleanup(func() {
+		if had {
+			_ = os.Setenv(key, old)
+			return
+		}
+		_ = os.Unsetenv(key)
+	})
+}

internal/config/logger.go

@@ -23,3 +23,7 @@ func newLogger() *slog.Logger {
 	h := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: level})
 	return slog.New(h)
 }
+
+func RefreshLogger() {
+	Logger = newLogger()
+}

internal/config/paths.go

@@ -37,6 +37,10 @@ func WASMPath() string {
 	return ResolvePath("DS2API_WASM_PATH", "sha3_wasm_bg.7b9ca65ddd.wasm")
 }
 
+func RawStreamSampleRoot() string {
+	return ResolvePath("DS2API_RAW_STREAM_SAMPLE_ROOT", "tests/raw_stream_samples")
+}
+
 func StaticAdminDir() string {
 	return ResolvePath("DS2API_STATIC_ADMIN_DIR", "static/admin")
 }

internal/config/store.go

@@ -21,23 +21,36 @@ type Store struct {
 }
 
 func LoadStore() *Store {
-	cfg, fromEnv, err := loadConfig()
+	store, err := loadStore()
 	if err != nil {
 		Logger.Warn("[config] load failed", "error", err)
 	}
-	if len(cfg.Keys) == 0 && len(cfg.Accounts) == 0 {
+	if len(store.cfg.Keys) == 0 && len(store.cfg.Accounts) == 0 {
 		Logger.Warn("[config] empty config loaded")
 	}
-	s := &Store{cfg: cfg, path: ConfigPath(), fromEnv: fromEnv}
-	s.rebuildIndexes()
-	return s
+	store.rebuildIndexes()
+	return store
+}
+
+func LoadStoreWithError() (*Store, error) {
+	store, err := loadStore()
+	if err != nil {
+		return nil, err
+	}
+	store.rebuildIndexes()
+	return store, nil
+}
+
+func loadStore() (*Store, error) {
+	cfg, fromEnv, err := loadConfig()
+	if validateErr := ValidateConfig(cfg); validateErr != nil {
+		err = errors.Join(err, validateErr)
+	}
+	return &Store{cfg: cfg, path: ConfigPath(), fromEnv: fromEnv}, err
 }
 
 func loadConfig() (Config, bool, error) {
 	rawCfg := strings.TrimSpace(os.Getenv("DS2API_CONFIG_JSON"))
-	if rawCfg == "" {
-		rawCfg = strings.TrimSpace(os.Getenv("CONFIG_JSON"))
-	}
 	if rawCfg != "" {
 		cfg, err := parseConfigString(rawCfg)
 		if err != nil {
@@ -62,6 +75,9 @@ func loadConfig() (Config, bool, error) {
 			}
 		}
 		if errors.Is(fileErr, os.ErrNotExist) {
+			if validateErr := ValidateConfig(cfg); validateErr != nil {
+				return cfg, true, validateErr
+			}
 			if writeErr := writeConfigFile(ConfigPath(), cfg.Clone()); writeErr == nil {
 				return cfg, false, err
 			} else {

internal/config/store_accessors.go

@@ -42,6 +42,15 @@ func (s *Store) CompatWideInputStrictOutput() bool {
 	return *s.cfg.Compat.WideInputStrictOutput
 }
 
+func (s *Store) CompatStripReferenceMarkers() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	if s.cfg.Compat.StripReferenceMarkers == nil {
+		return true
+	}
+	return *s.cfg.Compat.StripReferenceMarkers
+}
+
 func (s *Store) ToolcallMode() string {
 	return "feature_match"
 }
@@ -65,6 +74,20 @@ func (s *Store) EmbeddingsProvider() string {
 	return strings.TrimSpace(s.cfg.Embeddings.Provider)
 }
 
+func (s *Store) AutoDeleteMode() string {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	mode := strings.ToLower(strings.TrimSpace(s.cfg.AutoDelete.Mode))
+	switch mode {
+	case "none", "single", "all":
+		return mode
+	}
+	if s.cfg.AutoDelete.Sessions {
+		return "all"
+	}
+	return "none"
+}
+
 func (s *Store) AdminPasswordHash() string {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
@@ -97,13 +120,8 @@ func (s *Store) RuntimeAccountMaxInflight() int {
 	if s.cfg.Runtime.AccountMaxInflight > 0 {
 		return s.cfg.Runtime.AccountMaxInflight
 	}
-	for _, key := range []string{"DS2API_ACCOUNT_MAX_INFLIGHT", "DS2API_ACCOUNT_CONCURRENCY"} {
-		raw := strings.TrimSpace(os.Getenv(key))
-		if raw == "" {
-			continue
-		}
-		n, err := strconv.Atoi(raw)
-		if err == nil && n > 0 {
+	if raw := strings.TrimSpace(os.Getenv("DS2API_ACCOUNT_MAX_INFLIGHT")); raw != "" {
+		if n, err := strconv.Atoi(raw); err == nil && n > 0 {
 			return n
 		}
 	}
@@ -116,13 +134,8 @@ func (s *Store) RuntimeAccountMaxQueue(defaultSize int) int {
 	if s.cfg.Runtime.AccountMaxQueue > 0 {
 		return s.cfg.Runtime.AccountMaxQueue
 	}
-	for _, key := range []string{"DS2API_ACCOUNT_MAX_QUEUE", "DS2API_ACCOUNT_QUEUE_SIZE"} {
-		raw := strings.TrimSpace(os.Getenv(key))
-		if raw == "" {
-			continue
-		}
-		n, err := strconv.Atoi(raw)
-		if err == nil && n >= 0 {
+	if raw := strings.TrimSpace(os.Getenv("DS2API_ACCOUNT_MAX_QUEUE")); raw != "" {
+		if n, err := strconv.Atoi(raw); err == nil && n >= 0 {
 			return n
 		}
 	}
@@ -138,13 +151,8 @@ func (s *Store) RuntimeGlobalMaxInflight(defaultSize int) int {
 	if s.cfg.Runtime.GlobalMaxInflight > 0 {
 		return s.cfg.Runtime.GlobalMaxInflight
 	}
-	for _, key := range []string{"DS2API_GLOBAL_MAX_INFLIGHT", "DS2API_MAX_INFLIGHT"} {
-		raw := strings.TrimSpace(os.Getenv(key))
-		if raw == "" {
-			continue
-		}
-		n, err := strconv.Atoi(raw)
-		if err == nil && n > 0 {
+	if raw := strings.TrimSpace(os.Getenv("DS2API_GLOBAL_MAX_INFLIGHT")); raw != "" {
+		if n, err := strconv.Atoi(raw); err == nil && n > 0 {
 			return n
 		}
 	}
@@ -164,7 +172,5 @@ func (s *Store) RuntimeTokenRefreshIntervalHours() int {
 }
 
 func (s *Store) AutoDeleteSessions() bool {
-	s.mu.RLock()
-	defer s.mu.RUnlock()
-	return s.cfg.AutoDelete.Sessions
+	return s.AutoDeleteMode() != "none"
 }

internal/config/store_env_writeback.go

@@ -19,9 +19,6 @@ func (s *Store) IsEnvWritebackEnabled() bool {
 
 func (s *Store) HasEnvConfigSource() bool {
 	rawCfg := strings.TrimSpace(os.Getenv("DS2API_CONFIG_JSON"))
-	if rawCfg == "" {
-		rawCfg = strings.TrimSpace(os.Getenv("CONFIG_JSON"))
-	}
 	return rawCfg != ""
 }
 

internal/config/validation.go

@@ -0,0 +1,91 @@
+package config
+
+import (
+	"fmt"
+	"strings"
+)
+
+func ValidateConfig(c Config) error {
+	if err := ValidateAdminConfig(c.Admin); err != nil {
+		return err
+	}
+	if err := ValidateRuntimeConfig(c.Runtime); err != nil {
+		return err
+	}
+	if err := ValidateResponsesConfig(c.Responses); err != nil {
+		return err
+	}
+	if err := ValidateEmbeddingsConfig(c.Embeddings); err != nil {
+		return err
+	}
+	if err := ValidateAutoDeleteConfig(c.AutoDelete); err != nil {
+		return err
+	}
+	return nil
+}
+
+func ValidateAdminConfig(admin AdminConfig) error {
+	return ValidateIntRange("admin.jwt_expire_hours", admin.JWTExpireHours, 1, 720, false)
+}
+
+func ValidateRuntimeConfig(runtime RuntimeConfig) error {
+	if err := ValidateIntRange("runtime.account_max_inflight", runtime.AccountMaxInflight, 1, 256, false); err != nil {
+		return err
+	}
+	if err := ValidateIntRange("runtime.account_max_queue", runtime.AccountMaxQueue, 1, 200000, false); err != nil {
+		return err
+	}
+	if err := ValidateIntRange("runtime.global_max_inflight", runtime.GlobalMaxInflight, 1, 200000, false); err != nil {
+		return err
+	}
+	if err := ValidateIntRange("runtime.token_refresh_interval_hours", runtime.TokenRefreshIntervalHours, 1, 720, false); err != nil {
+		return err
+	}
+	if runtime.AccountMaxInflight > 0 && runtime.GlobalMaxInflight > 0 && runtime.GlobalMaxInflight < runtime.AccountMaxInflight {
+		return fmt.Errorf("runtime.global_max_inflight must be >= runtime.account_max_inflight")
+	}
+	return nil
+}
+
+func ValidateResponsesConfig(responses ResponsesConfig) error {
+	return ValidateIntRange("responses.store_ttl_seconds", responses.StoreTTLSeconds, 30, 86400, false)
+}
+
+func ValidateEmbeddingsConfig(embeddings EmbeddingsConfig) error {
+	return ValidateTrimmedString("embeddings.provider", embeddings.Provider, false)
+}
+
+func ValidateAutoDeleteConfig(autoDelete AutoDeleteConfig) error {
+	return ValidateAutoDeleteMode(autoDelete.Mode)
+}
+
+func ValidateIntRange(name string, value, min, max int, required bool) error {
+	if value == 0 && !required {
+		return nil
+	}
+	if value < min || value > max {
+		return fmt.Errorf("%s must be between %d and %d", name, min, max)
+	}
+	return nil
+}
+
+func ValidateTrimmedString(name, value string, required bool) error {
+	trimmed := strings.TrimSpace(value)
+	if trimmed == "" {
+		if !required && value == "" {
+			return nil
+		}
+		return fmt.Errorf("%s cannot be empty", name)
+	}
+	return nil
+}
+
+func ValidateAutoDeleteMode(mode string) error {
+	mode = strings.ToLower(strings.TrimSpace(mode))
+	switch mode {
+	case "", "none", "single", "all":
+		return nil
+	default:
+		return fmt.Errorf("auto_delete.mode must be one of none, single, all")
+	}
+}

internal/config/validation_test.go

@@ -0,0 +1,61 @@
+package config
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestValidateConfigRejectsInvalidValues(t *testing.T) {
+	tests := []struct {
+		name string
+		cfg  Config
+		want string
+	}{
+		{
+			name: "admin",
+			cfg:  Config{Admin: AdminConfig{JWTExpireHours: 721}},
+			want: "admin.jwt_expire_hours",
+		},
+		{
+			name: "runtime relation",
+			cfg: Config{Runtime: RuntimeConfig{
+				AccountMaxInflight: 8,
+				GlobalMaxInflight:  4,
+			}},
+			want: "runtime.global_max_inflight must be >= runtime.account_max_inflight",
+		},
+		{
+			name: "responses",
+			cfg:  Config{Responses: ResponsesConfig{StoreTTLSeconds: 10}},
+			want: "responses.store_ttl_seconds",
+		},
+		{
+			name: "embeddings",
+			cfg:  Config{Embeddings: EmbeddingsConfig{Provider: "   "}},
+			want: "embeddings.provider",
+		},
+		{
+			name: "auto delete",
+			cfg:  Config{AutoDelete: AutoDeleteConfig{Mode: "maybe"}},
+			want: "auto_delete.mode",
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err := ValidateConfig(tc.cfg)
+			if err == nil {
+				t.Fatal("expected validation error")
+			}
+			if !strings.Contains(err.Error(), tc.want) {
+				t.Fatalf("expected %q in error, got %v", tc.want, err)
+			}
+		})
+	}
+}
+
+func TestValidateConfigAcceptsLegacyAutoDeleteSessions(t *testing.T) {
+	if err := ValidateConfig(Config{AutoDelete: AutoDeleteConfig{Sessions: true}}); err != nil {
+		t.Fatalf("expected legacy auto_delete.sessions config to remain valid, got %v", err)
+	}
+}

internal/deepseek/client_completion.go

@@ -31,6 +31,7 @@ func (c *Client) CallCompletion(ctx context.Context, a *auth.RequestAuth, payloa
 			if captureSession != nil {
 				resp.Body = captureSession.WrapBody(resp.Body, resp.StatusCode)
 			}
+			resp = c.wrapCompletionWithAutoContinue(ctx, a, payload, powResp, resp)
 			return resp, nil
 		}
 		if captureSession != nil {
@@ -60,7 +61,7 @@ func (c *Client) streamPost(ctx context.Context, url string, headers map[string]
 		config.Logger.Warn("[deepseek] fingerprint stream request failed, fallback to std transport", "url", url, "error", err)
 		req2, reqErr := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(b))
 		if reqErr != nil {
-			return nil, err
+			return nil, reqErr
 		}
 		for k, v := range headers {
 			req2.Header.Set(k, v)

internal/deepseek/client_continue.go

@@ -0,0 +1,241 @@
+package deepseek
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"io"
+	"net/http"
+	"strings"
+
+	"ds2api/internal/auth"
+	"ds2api/internal/config"
+)
+
+const defaultAutoContinueLimit = 8
+
+type continueOpenFunc func(context.Context, string, int) (*http.Response, error)
+
+type continueState struct {
+	sessionID         string
+	responseMessageID int
+	lastStatus        string
+	finished          bool
+}
+
+// wrapCompletionWithAutoContinue wraps the completion response body so that
+// if the upstream indicates the response is incomplete (WIP / INCOMPLETE /
+// AUTO_CONTINUE), ds2api will automatically call the DeepSeek continue
+// endpoint and splice the continuation SSE stream onto the original.
+// The caller sees a single, seamless SSE stream.
+func (c *Client) wrapCompletionWithAutoContinue(ctx context.Context, a *auth.RequestAuth, payload map[string]any, powResp string, resp *http.Response) *http.Response {
+	if resp == nil || resp.Body == nil {
+		return resp
+	}
+	sessionID, _ := payload["chat_session_id"].(string)
+	sessionID = strings.TrimSpace(sessionID)
+	if sessionID == "" {
+		return resp
+	}
+	config.Logger.Debug("[auto_continue] wrapping completion response", "session_id", sessionID)
+	resp.Body = newAutoContinueBody(ctx, resp.Body, sessionID, defaultAutoContinueLimit, func(ctx context.Context, sessionID string, responseMessageID int) (*http.Response, error) {
+		return c.callContinue(ctx, a, sessionID, responseMessageID, powResp)
+	})
+	return resp
+}
+
+// callContinue sends a continue request to DeepSeek to resume generation.
+func (c *Client) callContinue(ctx context.Context, a *auth.RequestAuth, sessionID string, responseMessageID int, powResp string) (*http.Response, error) {
+	if strings.TrimSpace(sessionID) == "" || responseMessageID <= 0 {
+		return nil, errors.New("missing continue identifiers")
+	}
+	headers := c.authHeaders(a.DeepSeekToken)
+	headers["x-ds-pow-response"] = powResp
+	payload := map[string]any{
+		"chat_session_id":    sessionID,
+		"message_id":         responseMessageID,
+		"fallback_to_resume": true,
+	}
+	config.Logger.Info("[auto_continue] calling continue", "session_id", sessionID, "message_id", responseMessageID)
+	captureSession := c.capture.Start("deepseek_continue", DeepSeekContinueURL, a.AccountID, payload)
+	resp, err := c.streamPost(ctx, DeepSeekContinueURL, headers, payload)
+	if err != nil {
+		return nil, err
+	}
+	if captureSession != nil {
+		resp.Body = captureSession.WrapBody(resp.Body, resp.StatusCode)
+	}
+	if resp.StatusCode != http.StatusOK {
+		_ = resp.Body.Close()
+		return nil, errors.New("continue failed")
+	}
+	return resp, nil
+}
+
+// newAutoContinueBody returns a new ReadCloser that transparently pumps
+// continuation rounds via an io.Pipe.
+func newAutoContinueBody(ctx context.Context, initial io.ReadCloser, sessionID string, maxRounds int, openContinue continueOpenFunc) io.ReadCloser {
+	if initial == nil || strings.TrimSpace(sessionID) == "" || openContinue == nil {
+		return initial
+	}
+	if maxRounds <= 0 {
+		maxRounds = defaultAutoContinueLimit
+	}
+	pr, pw := io.Pipe()
+	go pumpAutoContinue(ctx, pw, initial, continueState{sessionID: sessionID}, maxRounds, openContinue)
+	return pr
+}
+
+// pumpAutoContinue is the goroutine that drives the auto-continue loop.
+// It reads the initial SSE body, checks whether a continue is required,
+// and if so opens a new continue stream and splices it onto the pipe writer.
+func pumpAutoContinue(ctx context.Context, pw *io.PipeWriter, initial io.ReadCloser, state continueState, maxRounds int, openContinue continueOpenFunc) {
+	defer func() { _ = pw.Close() }()
+	current := initial
+	rounds := 0
+	for {
+		hadDone, err := streamBodyWithContinueState(ctx, pw, current, &state)
+		_ = current.Close()
+		if err != nil {
+			_ = pw.CloseWithError(err)
+			return
+		}
+		if state.shouldContinue() && rounds < maxRounds {
+			rounds++
+			config.Logger.Info("[auto_continue] continuing", "round", rounds, "session_id", state.sessionID, "message_id", state.responseMessageID, "status", state.lastStatus)
+			nextResp, err := openContinue(ctx, state.sessionID, state.responseMessageID)
+			if err != nil {
+				config.Logger.Warn("[auto_continue] continue request failed", "round", rounds, "error", err)
+				_ = pw.CloseWithError(err)
+				return
+			}
+			current = nextResp.Body
+			state.prepareForNextRound()
+			continue
+		}
+		// Emit the final [DONE] sentinel if the upstream had one.
+		if hadDone {
+			if _, err := io.Copy(pw, bytes.NewBufferString("data: [DONE]\n")); err != nil {
+				_ = pw.CloseWithError(err)
+			}
+		}
+		return
+	}
+}
+
+// streamBodyWithContinueState scans an SSE body line-by-line, writing each
+// line through to pw while observing state signals. Intermediate [DONE]
+// sentinels are consumed (not forwarded) so that the downstream only sees
+// one final [DONE] at the very end.
+func streamBodyWithContinueState(ctx context.Context, pw *io.PipeWriter, body io.Reader, state *continueState) (bool, error) {
+	scanner := bufio.NewScanner(body)
+	scanner.Buffer(make([]byte, 0, 64*1024), 2*1024*1024)
+	hadDone := false
+	for scanner.Scan() {
+		select {
+		case <-ctx.Done():
+			return hadDone, ctx.Err()
+		default:
+		}
+		line := append([]byte{}, scanner.Bytes()...)
+		trimmed := strings.TrimSpace(string(line))
+		if trimmed == "" {
+			continue
+		}
+		if strings.HasPrefix(trimmed, "data:") {
+			data := strings.TrimSpace(strings.TrimPrefix(trimmed, "data:"))
+			if data == "[DONE]" {
+				hadDone = true
+				continue
+			}
+			state.observe(data)
+		}
+		if _, err := io.Copy(pw, bytes.NewReader(append(line, '\n'))); err != nil {
+			return hadDone, err
+		}
+	}
+	return hadDone, scanner.Err()
+}
+
+// observe extracts continue-relevant signals from an SSE JSON chunk.
+func (s *continueState) observe(data string) {
+	if s == nil || strings.TrimSpace(data) == "" {
+		return
+	}
+	var chunk map[string]any
+	if err := json.Unmarshal([]byte(data), &chunk); err != nil {
+		return
+	}
+	// Top-level response_message_id
+	if id := intFrom(chunk["response_message_id"]); id > 0 {
+		s.responseMessageID = id
+	}
+	// Path-based status: {"p": "response/status", "v": "FINISHED"}
+	if p, _ := chunk["p"].(string); p == "response/status" {
+		if status, _ := chunk["v"].(string); status != "" {
+			s.lastStatus = strings.TrimSpace(status)
+			if strings.EqualFold(s.lastStatus, "FINISHED") {
+				s.finished = true
+			}
+		}
+	}
+	// Nested v.response
+	v, _ := chunk["v"].(map[string]any)
+	if response, _ := v["response"].(map[string]any); response != nil {
+		if id := intFrom(response["message_id"]); id > 0 {
+			s.responseMessageID = id
+		}
+		if status, _ := response["status"].(string); status != "" {
+			s.lastStatus = strings.TrimSpace(status)
+			if strings.EqualFold(s.lastStatus, "FINISHED") {
+				s.finished = true
+			}
+		}
+		if autoContinue, ok := response["auto_continue"].(bool); ok && autoContinue {
+			s.lastStatus = "AUTO_CONTINUE"
+		}
+	}
+	// Nested message.response
+	if message, _ := chunk["message"].(map[string]any); message != nil {
+		if response, _ := message["response"].(map[string]any); response != nil {
+			if id := intFrom(response["message_id"]); id > 0 {
+				s.responseMessageID = id
+			}
+			if status, _ := response["status"].(string); status != "" {
+				s.lastStatus = strings.TrimSpace(status)
+				if strings.EqualFold(s.lastStatus, "FINISHED") {
+					s.finished = true
+				}
+			}
+		}
+	}
+}
+
+// shouldContinue returns true when the upstream indicates the response is
+// not yet finished and we have enough information to issue a continue request.
+func (s *continueState) shouldContinue() bool {
+	if s == nil {
+		return false
+	}
+	if s.finished || s.responseMessageID <= 0 || strings.TrimSpace(s.sessionID) == "" {
+		return false
+	}
+	switch strings.ToUpper(strings.TrimSpace(s.lastStatus)) {
+	case "WIP", "INCOMPLETE", "AUTO_CONTINUE":
+		return true
+	default:
+		return false
+	}
+}
+
+// prepareForNextRound resets ephemeral state before processing the next
+// continuation stream.
+func (s *continueState) prepareForNextRound() {
+	if s == nil {
+		return
+	}
+	s.finished = false
+	s.lastStatus = ""
+}

internal/deepseek/client_continue_test.go

@@ -0,0 +1,137 @@
+package deepseek
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+
+	"ds2api/internal/auth"
+)
+
+type failingDoer struct {
+	err error
+}
+
+func (d failingDoer) Do(_ *http.Request) (*http.Response, error) {
+	return nil, d.err
+}
+
+type roundTripperFunc func(*http.Request) (*http.Response, error)
+
+func (f roundTripperFunc) RoundTrip(req *http.Request) (*http.Response, error) {
+	return f(req)
+}
+
+func TestCallContinuePropagatesPowHeaderToFallbackRequest(t *testing.T) {
+	var seenPow string
+	var seenURL string
+
+	client := &Client{
+		stream:   failingDoer{err: errors.New("stream transport failed")},
+		fallbackS: &http.Client{
+			Transport: roundTripperFunc(func(req *http.Request) (*http.Response, error) {
+				seenPow = req.Header.Get("x-ds-pow-response")
+				seenURL = req.URL.String()
+				body := io.NopCloser(strings.NewReader("data: {\"p\":\"response/content\",\"v\":\"continued\"}\n" + "data: [DONE]\n"))
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Header:     make(http.Header),
+					Body:       body,
+					Request:    req,
+				}, nil
+			}),
+		},
+	}
+
+	resp, err := client.callContinue(context.Background(), &auth.RequestAuth{
+		DeepSeekToken: "token",
+		AccountID:     "acct",
+	}, "session-123", 99, "pow-response-abc")
+	if err != nil {
+		t.Fatalf("callContinue returned error: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if seenPow != "pow-response-abc" {
+		t.Fatalf("continue request pow header=%q want=%q", seenPow, "pow-response-abc")
+	}
+	if seenURL != DeepSeekContinueURL {
+		t.Fatalf("continue request url=%q want=%q", seenURL, DeepSeekContinueURL)
+	}
+}
+
+func TestCallCompletionAutoContinueThreadsPowHeader(t *testing.T) {
+	var seenPow string
+	var seenContinueURL string
+
+	initialBody := strings.Join([]string{
+		`data: {"response_message_id":321,"v":{"response":{"message_id":321,"status":"WIP","auto_continue":true}}}`,
+		`data: [DONE]`,
+	}, "\n") + "\n"
+
+	client := &Client{
+		stream: failingOrCompletionDoer{
+			completionResp: &http.Response{
+				StatusCode: http.StatusOK,
+				Header:     make(http.Header),
+				Body:       io.NopCloser(strings.NewReader(initialBody)),
+			},
+		},
+		fallbackS: &http.Client{
+			Transport: roundTripperFunc(func(req *http.Request) (*http.Response, error) {
+				seenPow = req.Header.Get("x-ds-pow-response")
+				seenContinueURL = req.URL.String()
+				body := io.NopCloser(strings.NewReader("data: {\"response_message_id\":322,\"v\":{\"response\":{\"message_id\":322,\"status\":\"FINISHED\"}}}\n" + "data: [DONE]\n"))
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Header:     make(http.Header),
+					Body:       body,
+					Request:    req,
+				}, nil
+			}),
+		},
+	}
+
+	resp, err := client.CallCompletion(context.Background(), &auth.RequestAuth{
+		DeepSeekToken: "token",
+		AccountID:     "acct",
+	}, map[string]any{
+		"chat_session_id": "session-123",
+	}, "pow-response-xyz", 1)
+	if err != nil {
+		t.Fatalf("CallCompletion returned error: %v", err)
+	}
+	defer resp.Body.Close()
+
+	out, err := io.ReadAll(resp.Body)
+	if err != nil {
+		t.Fatalf("read auto-continued body failed: %v", err)
+	}
+	if seenPow != "pow-response-xyz" {
+		t.Fatalf("threaded continue pow header=%q want=%q", seenPow, "pow-response-xyz")
+	}
+	if seenContinueURL != DeepSeekContinueURL {
+		t.Fatalf("continue url=%q want=%q", seenContinueURL, DeepSeekContinueURL)
+	}
+	if !bytes.Contains(out, []byte(`"status":"WIP"`)) {
+		t.Fatalf("expected initial stream content in body, got=%s", string(out))
+	}
+	if !bytes.Contains(out, []byte(`data: [DONE]`)) {
+		t.Fatalf("expected final DONE sentinel in body, got=%s", string(out))
+	}
+}
+
+type failingOrCompletionDoer struct {
+	completionResp *http.Response
+}
+
+func (d failingOrCompletionDoer) Do(req *http.Request) (*http.Response, error) {
+	if strings.Contains(req.URL.Path, "/chat/completion") {
+		return d.completionResp, nil
+	}
+	return nil, errors.New("forced stream failure")
+}

internal/deepseek/client_http_json.go

@@ -39,7 +39,7 @@ func (c *Client) postJSONWithStatus(ctx context.Context, doer trans.Doer, url st
 		config.Logger.Warn("[deepseek] fingerprint request failed, fallback to std transport", "url", url, "error", err)
 		req2, reqErr := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(b))
 		if reqErr != nil {
-			return nil, 0, err
+			return nil, 0, reqErr
 		}
 		for k, v := range headers {
 			req2.Header.Set(k, v)
@@ -76,7 +76,7 @@ func (c *Client) getJSONWithStatus(ctx context.Context, doer trans.Doer, url str
 		config.Logger.Warn("[deepseek] fingerprint GET request failed, fallback to std transport", "url", url, "error", err)
 		req2, reqErr := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 		if reqErr != nil {
-			return nil, 0, err
+			return nil, 0, reqErr
 		}
 		for k, v := range headers {
 			req2.Header.Set(k, v)

internal/deepseek/constants.go

@@ -11,6 +11,7 @@ const (
 	DeepSeekCreateSessionURL = "https://chat.deepseek.com/api/v0/chat_session/create"
 	DeepSeekCreatePowURL     = "https://chat.deepseek.com/api/v0/chat/create_pow_challenge"
 	DeepSeekCompletionURL    = "https://chat.deepseek.com/api/v0/chat/completion"
+	DeepSeekContinueURL      = "https://chat.deepseek.com/api/v0/chat/continue"
 	DeepSeekFetchSessionURL  = "https://chat.deepseek.com/api/v0/chat_session/fetch_page"
 	DeepSeekDeleteSessionURL     = "https://chat.deepseek.com/api/v0/chat_session/delete"
 	DeepSeekDeleteAllSessionsURL = "https://chat.deepseek.com/api/v0/chat_session/delete_all"

internal/js/chat-stream/index.js

@@ -6,7 +6,11 @@ const {
 const {
   parseChunkForContent,
   extractContentRecursive,
+  filterLeakedContentFilterParts,
+  hasContentFilterStatus,
+  extractAccumulatedTokenUsage,
   shouldSkipPath,
+  stripReferenceMarkers,
 } = require('./sse_parse');
 const {
   resolveToolcallPolicy,
@@ -17,6 +21,7 @@ const {
 } = require('./toolcall_policy');
 const {
   estimateTokens,
+  buildUsage,
 } = require('./token_usage');
 const {
   setCorsHeaders,
@@ -100,6 +105,7 @@ module.exports.__test = {
   parseChunkForContent,
   extractContentRecursive,
   shouldSkipPath,
+  stripReferenceMarkers,
   asString,
   resolveToolcallPolicy,
   formatIncrementalToolCallDeltas,
@@ -107,6 +113,10 @@ module.exports.__test = {
   boolDefaultTrue,
   filterIncrementalToolCallDeltasByAllowed,
   estimateTokens,
+  buildUsage,
+  filterLeakedContentFilterParts,
+  hasContentFilterStatus,
+  extractAccumulatedTokenUsage,
   isNodeStreamSupportedPath,
   extractPathname,
 };

internal/js/chat-stream/sse_parse.js

@@ -1,240 +1,3 @@
 'use strict';
 
-const {
-  SKIP_PATTERNS,
-  SKIP_EXACT_PATHS,
-} = require('../shared/deepseek-constants');
-
-function parseChunkForContent(chunk, thinkingEnabled, currentType) {
-  if (!chunk || typeof chunk !== 'object' || !Object.prototype.hasOwnProperty.call(chunk, 'v')) {
-    return { parts: [], finished: false, newType: currentType };
-  }
-  const pathValue = asString(chunk.p);
-  if (shouldSkipPath(pathValue)) {
-    return { parts: [], finished: false, newType: currentType };
-  }
-  if (pathValue === 'response/status' && asString(chunk.v) === 'FINISHED') {
-    return { parts: [], finished: true, newType: currentType };
-  }
-
-  let newType = currentType;
-  const parts = [];
-
-  if (pathValue === 'response/fragments' && asString(chunk.o).toUpperCase() === 'APPEND' && Array.isArray(chunk.v)) {
-    for (const frag of chunk.v) {
-      if (!frag || typeof frag !== 'object') {
-        continue;
-      }
-      const fragType = asString(frag.type).toUpperCase();
-      const content = asString(frag.content);
-      if (!content) {
-        continue;
-      }
-      if (fragType === 'THINK' || fragType === 'THINKING') {
-        newType = 'thinking';
-        parts.push({ text: content, type: 'thinking' });
-      } else if (fragType === 'RESPONSE') {
-        newType = 'text';
-        parts.push({ text: content, type: 'text' });
-      } else {
-        parts.push({ text: content, type: 'text' });
-      }
-    }
-  }
-
-  if (pathValue === 'response' && Array.isArray(chunk.v)) {
-    for (const item of chunk.v) {
-      if (!item || typeof item !== 'object') {
-        continue;
-      }
-      if (item.p === 'fragments' && item.o === 'APPEND' && Array.isArray(item.v)) {
-        for (const frag of item.v) {
-          const fragType = asString(frag && frag.type).toUpperCase();
-          if (fragType === 'THINK' || fragType === 'THINKING') {
-            newType = 'thinking';
-          } else if (fragType === 'RESPONSE') {
-            newType = 'text';
-          }
-        }
-      }
-    }
-  }
-
-  let partType = 'text';
-  if (pathValue === 'response/thinking_content') {
-    partType = 'thinking';
-  } else if (pathValue === 'response/content') {
-    partType = 'text';
-  } else if (pathValue.includes('response/fragments') && pathValue.includes('/content')) {
-    partType = newType;
-  } else if (!pathValue && thinkingEnabled) {
-    partType = newType;
-  }
-
-  const val = chunk.v;
-  if (typeof val === 'string') {
-    if (val === 'FINISHED' && (!pathValue || pathValue === 'status')) {
-      return { parts: [], finished: true, newType };
-    }
-    if (val) {
-      parts.push({ text: val, type: partType });
-    }
-    return { parts, finished: false, newType };
-  }
-
-  if (Array.isArray(val)) {
-    const extracted = extractContentRecursive(val, partType);
-    if (extracted.finished) {
-      return { parts: [], finished: true, newType };
-    }
-    parts.push(...extracted.parts);
-    return { parts, finished: false, newType };
-  }
-
-  if (val && typeof val === 'object') {
-    const resp = val.response && typeof val.response === 'object' ? val.response : val;
-    if (Array.isArray(resp.fragments)) {
-      for (const frag of resp.fragments) {
-        if (!frag || typeof frag !== 'object') {
-          continue;
-        }
-        const content = asString(frag.content);
-        if (!content) {
-          continue;
-        }
-        const t = asString(frag.type).toUpperCase();
-        if (t === 'THINK' || t === 'THINKING') {
-          newType = 'thinking';
-          parts.push({ text: content, type: 'thinking' });
-        } else if (t === 'RESPONSE') {
-          newType = 'text';
-          parts.push({ text: content, type: 'text' });
-        } else {
-          parts.push({ text: content, type: partType });
-        }
-      }
-    }
-  }
-  return { parts, finished: false, newType };
-}
-
-function extractContentRecursive(items, defaultType) {
-  const parts = [];
-  for (const it of items) {
-    if (!it || typeof it !== 'object') {
-      continue;
-    }
-    if (!Object.prototype.hasOwnProperty.call(it, 'v')) {
-      continue;
-    }
-    const itemPath = asString(it.p);
-    const itemV = it.v;
-    if (itemPath === 'status' && asString(itemV) === 'FINISHED') {
-      return { parts: [], finished: true };
-    }
-    if (shouldSkipPath(itemPath)) {
-      continue;
-    }
-    const content = asString(it.content);
-    if (content) {
-      const typeName = asString(it.type).toUpperCase();
-      if (typeName === 'THINK' || typeName === 'THINKING') {
-        parts.push({ text: content, type: 'thinking' });
-      } else if (typeName === 'RESPONSE') {
-        parts.push({ text: content, type: 'text' });
-      } else {
-        parts.push({ text: content, type: defaultType });
-      }
-      continue;
-    }
-
-    let partType = defaultType;
-    if (itemPath.includes('thinking')) {
-      partType = 'thinking';
-    } else if (itemPath.includes('content') || itemPath === 'response' || itemPath === 'fragments') {
-      partType = 'text';
-    }
-
-    if (typeof itemV === 'string') {
-      if (itemV && itemV !== 'FINISHED') {
-        parts.push({ text: itemV, type: partType });
-      }
-      continue;
-    }
-
-    if (!Array.isArray(itemV)) {
-      continue;
-    }
-    for (const inner of itemV) {
-      if (typeof inner === 'string') {
-        if (inner) {
-          parts.push({ text: inner, type: partType });
-        }
-        continue;
-      }
-      if (!inner || typeof inner !== 'object') {
-        continue;
-      }
-      const ct = asString(inner.content);
-      if (!ct) {
-        continue;
-      }
-      const typeName = asString(inner.type).toUpperCase();
-      if (typeName === 'THINK' || typeName === 'THINKING') {
-        parts.push({ text: ct, type: 'thinking' });
-      } else if (typeName === 'RESPONSE') {
-        parts.push({ text: ct, type: 'text' });
-      } else {
-        parts.push({ text: ct, type: partType });
-      }
-    }
-  }
-  return { parts, finished: false };
-}
-
-function shouldSkipPath(pathValue) {
-  if (isFragmentStatusPath(pathValue)) {
-    return true;
-  }
-  if (SKIP_EXACT_PATHS.has(pathValue)) {
-    return true;
-  }
-  for (const p of SKIP_PATTERNS) {
-    if (pathValue.includes(p)) {
-      return true;
-    }
-  }
-  return false;
-}
-
-function isFragmentStatusPath(pathValue) {
-  if (!pathValue || pathValue === 'response/status') {
-    return false;
-  }
-  return /^response\/fragments\/-?\d+\/status$/i.test(pathValue);
-}
-
-function isCitation(text) {
-  return asString(text).trim().startsWith('[citation:');
-}
-
-function asString(v) {
-  if (typeof v === 'string') {
-    return v.trim();
-  }
-  if (Array.isArray(v)) {
-    return asString(v[0]);
-  }
-  if (v == null) {
-    return '';
-  }
-  return String(v).trim();
-}
-
-module.exports = {
-  parseChunkForContent,
-  extractContentRecursive,
-  shouldSkipPath,
-  isFragmentStatusPath,
-  isCitation,
-};
+module.exports = require('./sse_parse_impl');

internal/js/chat-stream/sse_parse_impl.js

@@ -0,0 +1,571 @@
+'use strict';
+
+// Implementation moved here to keep the line-gate wrapper tiny.
+
+const {
+  SKIP_PATTERNS,
+  SKIP_EXACT_PATHS,
+} = require('../shared/deepseek-constants');
+
+function parseChunkForContent(chunk, thinkingEnabled, currentType, stripReferenceMarkers = true) {
+  if (!chunk || typeof chunk !== 'object') {
+    return {
+      parsed: false,
+      parts: [],
+      finished: false,
+      contentFilter: false,
+      errorMessage: '',
+      outputTokens: 0,
+      newType: currentType,
+    };
+  }
+
+  if (Object.prototype.hasOwnProperty.call(chunk, 'error')) {
+    return {
+      parsed: true,
+      parts: [],
+      finished: true,
+      contentFilter: false,
+      errorMessage: formatErrorMessage(chunk.error),
+      outputTokens: 0,
+      newType: currentType,
+    };
+  }
+
+  const pathValue = asString(chunk.p);
+  const outputTokens = extractAccumulatedTokenUsage(chunk);
+
+  if (hasContentFilterStatus(chunk)) {
+    return {
+      parsed: true,
+      parts: [],
+      finished: true,
+      contentFilter: true,
+      errorMessage: '',
+      outputTokens,
+      newType: currentType,
+    };
+  }
+
+  if (shouldSkipPath(pathValue)) {
+    return {
+      parsed: true,
+      parts: [],
+      finished: false,
+      contentFilter: false,
+      errorMessage: '',
+      outputTokens,
+      newType: currentType,
+    };
+  }
+  if (isStatusPath(pathValue)) {
+    if (isFinishedStatus(chunk.v)) {
+      return {
+        parsed: true,
+        parts: [],
+        finished: true,
+        contentFilter: false,
+        errorMessage: '',
+        outputTokens,
+        newType: currentType,
+      };
+    }
+    return {
+      parsed: true,
+      parts: [],
+      finished: false,
+      contentFilter: false,
+      errorMessage: '',
+      outputTokens,
+      newType: currentType,
+    };
+  }
+
+  if (!Object.prototype.hasOwnProperty.call(chunk, 'v')) {
+    return {
+      parsed: true,
+      parts: [],
+      finished: false,
+      contentFilter: false,
+      errorMessage: '',
+      outputTokens,
+      newType: currentType,
+    };
+  }
+
+  let newType = currentType;
+  const parts = [];
+
+  if (pathValue === 'response/fragments' && asString(chunk.o).toUpperCase() === 'APPEND' && Array.isArray(chunk.v)) {
+    for (const frag of chunk.v) {
+      if (!frag || typeof frag !== 'object') {
+        continue;
+      }
+      const fragType = asString(frag.type).toUpperCase();
+      const content = asContentString(frag.content, stripReferenceMarkers);
+      if (!content) {
+        continue;
+      }
+      if (fragType === 'THINK' || fragType === 'THINKING') {
+        newType = 'thinking';
+        parts.push({ text: content, type: 'thinking' });
+      } else if (fragType === 'RESPONSE') {
+        newType = 'text';
+        parts.push({ text: content, type: 'text' });
+      } else {
+        parts.push({ text: content, type: 'text' });
+      }
+    }
+  }
+
+  if (pathValue === 'response' && Array.isArray(chunk.v)) {
+    for (const item of chunk.v) {
+      if (!item || typeof item !== 'object') {
+        continue;
+      }
+      if (item.p === 'fragments' && item.o === 'APPEND' && Array.isArray(item.v)) {
+        for (const frag of item.v) {
+          const fragType = asString(frag && frag.type).toUpperCase();
+          if (fragType === 'THINK' || fragType === 'THINKING') {
+            newType = 'thinking';
+          } else if (fragType === 'RESPONSE') {
+            newType = 'text';
+          }
+        }
+      }
+    }
+  }
+
+  let partType = 'text';
+  if (pathValue === 'response/thinking_content') {
+    partType = 'thinking';
+  } else if (pathValue === 'response/content') {
+    partType = 'text';
+  } else if (pathValue.includes('response/fragments') && pathValue.includes('/content')) {
+    partType = newType;
+  } else if (!pathValue && thinkingEnabled) {
+    partType = newType;
+  }
+
+  const val = chunk.v;
+  if (typeof val === 'string') {
+    if (isFinishedStatus(val) && (!pathValue || pathValue === 'status')) {
+      return {
+        parsed: true,
+        parts: [],
+        finished: true,
+        contentFilter: false,
+        errorMessage: '',
+        outputTokens,
+        newType,
+      };
+    }
+    if (isStatusPath(pathValue)) {
+      return {
+        parsed: true,
+        parts: [],
+        finished: false,
+        contentFilter: false,
+        errorMessage: '',
+        outputTokens,
+        newType,
+      };
+    }
+    const content = asContentString(val, stripReferenceMarkers);
+    if (content) {
+      parts.push({ text: content, type: partType });
+    }
+    return {
+      parsed: true,
+      parts: filterLeakedContentFilterParts(parts),
+      finished: false,
+      contentFilter: false,
+      errorMessage: '',
+      outputTokens,
+      newType,
+    };
+  }
+
+  if (Array.isArray(val)) {
+    const extracted = extractContentRecursive(val, partType, stripReferenceMarkers);
+    if (extracted.finished) {
+      return {
+        parsed: true,
+        parts: [],
+        finished: true,
+        contentFilter: false,
+        errorMessage: '',
+        outputTokens,
+        newType,
+      };
+    }
+    parts.push(...extracted.parts);
+    return {
+      parsed: true,
+      parts: filterLeakedContentFilterParts(parts),
+      finished: false,
+      contentFilter: false,
+      errorMessage: '',
+      outputTokens,
+      newType,
+    };
+  }
+
+  if (val && typeof val === 'object') {
+    const resp = val.response && typeof val.response === 'object' ? val.response : val;
+    if (Array.isArray(resp.fragments)) {
+      for (const frag of resp.fragments) {
+        if (!frag || typeof frag !== 'object') {
+          continue;
+        }
+        const content = asContentString(frag.content, stripReferenceMarkers);
+        if (!content) {
+          continue;
+        }
+        const t = asString(frag.type).toUpperCase();
+        if (t === 'THINK' || t === 'THINKING') {
+          newType = 'thinking';
+          parts.push({ text: content, type: 'thinking' });
+        } else if (t === 'RESPONSE') {
+          newType = 'text';
+          parts.push({ text: content, type: 'text' });
+        } else {
+          parts.push({ text: content, type: partType });
+        }
+      }
+    }
+  }
+  return {
+    parsed: true,
+    parts: filterLeakedContentFilterParts(parts),
+    finished: false,
+    contentFilter: false,
+    errorMessage: '',
+    outputTokens,
+    newType,
+  };
+}
+
+function extractContentRecursive(items, defaultType, stripReferenceMarkers = true) {
+  const parts = [];
+  for (const it of items) {
+    if (!it || typeof it !== 'object') {
+      continue;
+    }
+    if (!Object.prototype.hasOwnProperty.call(it, 'v')) {
+      continue;
+    }
+    const itemPath = asString(it.p);
+    const itemV = it.v;
+    if (isStatusPath(itemPath)) {
+      if (isFinishedStatus(itemV)) {
+        return { parts: [], finished: true };
+      }
+      continue;
+    }
+    if (shouldSkipPath(itemPath)) {
+      continue;
+    }
+    const content = asContentString(it.content, stripReferenceMarkers);
+    if (content) {
+      const typeName = asString(it.type).toUpperCase();
+      if (typeName === 'THINK' || typeName === 'THINKING') {
+        parts.push({ text: content, type: 'thinking' });
+      } else if (typeName === 'RESPONSE') {
+        parts.push({ text: content, type: 'text' });
+      } else {
+        parts.push({ text: content, type: defaultType });
+      }
+      continue;
+    }
+
+    let partType = defaultType;
+    if (itemPath.includes('thinking')) {
+      partType = 'thinking';
+    } else if (itemPath.includes('content') || itemPath === 'response' || itemPath === 'fragments') {
+      partType = 'text';
+    }
+
+    if (typeof itemV === 'string') {
+      if (isStatusPath(itemPath)) {
+        continue;
+      }
+      if (itemV && itemV !== 'FINISHED') {
+        const content = asContentString(itemV, stripReferenceMarkers);
+        if (content) {
+          parts.push({ text: content, type: partType });
+        }
+      }
+      continue;
+    }
+
+    if (!Array.isArray(itemV)) {
+      continue;
+    }
+    for (const inner of itemV) {
+      if (typeof inner === 'string') {
+        if (inner) {
+          const content = asContentString(inner, stripReferenceMarkers);
+          if (content) {
+            parts.push({ text: content, type: partType });
+          }
+        }
+        continue;
+      }
+      if (!inner || typeof inner !== 'object') {
+        continue;
+      }
+      const ct = asContentString(inner.content, stripReferenceMarkers);
+      if (!ct) {
+        continue;
+      }
+      const typeName = asString(inner.type).toUpperCase();
+      if (typeName === 'THINK' || typeName === 'THINKING') {
+        parts.push({ text: ct, type: 'thinking' });
+      } else if (typeName === 'RESPONSE') {
+        parts.push({ text: ct, type: 'text' });
+      } else {
+        parts.push({ text: ct, type: partType });
+      }
+    }
+  }
+  return { parts, finished: false };
+}
+
+function isStatusPath(pathValue) {
+  return pathValue === 'response/status' || pathValue === 'status';
+}
+
+function isFinishedStatus(value) {
+  return asString(value).toUpperCase() === 'FINISHED';
+}
+
+function filterLeakedContentFilterParts(parts) {
+  if (!Array.isArray(parts) || parts.length === 0) {
+    return parts;
+  }
+  const out = [];
+  for (const p of parts) {
+    if (!p || typeof p !== 'object') {
+      continue;
+    }
+    const { text, stripped } = stripLeakedContentFilterSuffix(p.text);
+    if (stripped && shouldDropCleanedLeakedChunk(text)) {
+      continue;
+    }
+    if (stripped) {
+      out.push({ ...p, text });
+      continue;
+    }
+    out.push(p);
+  }
+  return out;
+}
+
+function stripLeakedContentFilterSuffix(text) {
+  if (typeof text !== 'string' || text === '') {
+    return { text, stripped: false };
+  }
+  const upperText = text.toUpperCase();
+  const idx = upperText.indexOf('CONTENT_FILTER');
+  if (idx < 0) {
+    return { text, stripped: false };
+  }
+  return {
+    text: text.slice(0, idx).replace(/[ \t\r]+$/g, ''),
+    stripped: true,
+  };
+}
+
+function shouldDropCleanedLeakedChunk(cleaned) {
+  if (cleaned === '') {
+    return true;
+  }
+  if (typeof cleaned === 'string' && cleaned.includes('\n')) {
+    return false;
+  }
+  return asString(cleaned).trim() === '';
+}
+
+function hasContentFilterStatus(chunk) {
+  if (!chunk || typeof chunk !== 'object') {
+    return false;
+  }
+  const code = asString(chunk.code);
+  if (code && code.toLowerCase() === 'content_filter') {
+    return true;
+  }
+  return hasContentFilterStatusValue(chunk);
+}
+
+function hasContentFilterStatusValue(v) {
+  if (Array.isArray(v)) {
+    for (const item of v) {
+      if (hasContentFilterStatusValue(item)) {
+        return true;
+      }
+    }
+    return false;
+  }
+  if (!v || typeof v !== 'object') {
+    return false;
+  }
+  const pathValue = asString(v.p);
+  if (pathValue && pathValue.toLowerCase().includes('status')) {
+    if (asString(v.v).toLowerCase() === 'content_filter') {
+      return true;
+    }
+  }
+  if (asString(v.code).toLowerCase() === 'content_filter') {
+    return true;
+  }
+  for (const value of Object.values(v)) {
+    if (hasContentFilterStatusValue(value)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+function extractAccumulatedTokenUsage(chunk) {
+  return findAccumulatedTokenUsage(chunk);
+}
+
+function findAccumulatedTokenUsage(v) {
+  if (Array.isArray(v)) {
+    for (const item of v) {
+      const n = findAccumulatedTokenUsage(item);
+      if (n > 0) {
+        return n;
+      }
+    }
+    return 0;
+  }
+  if (!v || typeof v !== 'object') {
+    return 0;
+  }
+  const pathValue = asString(v.p);
+  if (pathValue && pathValue.toLowerCase().includes('accumulated_token_usage')) {
+    const n = toInt(v.v);
+    if (n > 0) {
+      return n;
+    }
+  }
+  const direct = toInt(v.accumulated_token_usage);
+  if (direct > 0) {
+    return direct;
+  }
+  for (const value of Object.values(v)) {
+    const n = findAccumulatedTokenUsage(value);
+    if (n > 0) {
+      return n;
+    }
+  }
+  return 0;
+}
+
+function toInt(v) {
+  if (typeof v !== 'number' || !Number.isFinite(v)) {
+    return 0;
+  }
+  return Math.trunc(v);
+}
+
+function formatErrorMessage(v) {
+  if (typeof v === 'string') {
+    return v;
+  }
+  if (v == null) {
+    return String(v);
+  }
+  try {
+    return JSON.stringify(v);
+  } catch (_err) {
+    return String(v);
+  }
+}
+
+function shouldSkipPath(pathValue) {
+  if (isFragmentStatusPath(pathValue)) {
+    return true;
+  }
+  if (SKIP_EXACT_PATHS.has(pathValue)) {
+    return true;
+  }
+  for (const p of SKIP_PATTERNS) {
+    if (pathValue.includes(p)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+function isFragmentStatusPath(pathValue) {
+  if (!pathValue || pathValue === 'response/status') {
+    return false;
+  }
+  return /^response\/fragments\/-?\d+\/status$/i.test(pathValue);
+}
+
+function isCitation(text) {
+  return asString(text).trim().startsWith('[citation:');
+}
+
+function asContentString(v, stripReferenceMarkers = true) {
+  if (typeof v === 'string') {
+    return stripReferenceMarkers ? stripReferenceMarkersText(v) : v;
+  }
+  if (Array.isArray(v)) {
+    let out = '';
+    for (const item of v) {
+      out += asContentString(item, stripReferenceMarkers);
+    }
+    return out;
+  }
+  if (v && typeof v === 'object') {
+    if (Object.prototype.hasOwnProperty.call(v, 'content')) {
+      return asContentString(v.content, stripReferenceMarkers);
+    }
+    if (Object.prototype.hasOwnProperty.call(v, 'v')) {
+      return asContentString(v.v, stripReferenceMarkers);
+    }
+    return '';
+  }
+  if (v == null) {
+    return '';
+  }
+  const text = String(v);
+  return stripReferenceMarkers ? stripReferenceMarkersText(text) : text;
+}
+
+function stripReferenceMarkersText(text) {
+  if (!text) {
+    return text;
+  }
+  return text.replace(/\[reference:\s*\d+\]/gi, '');
+}
+
+function asString(v) {
+  if (typeof v === 'string') {
+    return v.trim();
+  }
+  if (Array.isArray(v)) {
+    return asString(v[0]);
+  }
+  if (v == null) {
+    return '';
+  }
+  return String(v).trim();
+}
+
+module.exports = {
+  parseChunkForContent,
+  extractContentRecursive,
+  filterLeakedContentFilterParts,
+  hasContentFilterStatus,
+  extractAccumulatedTokenUsage,
+  shouldSkipPath,
+  isFragmentStatusPath,
+  isCitation,
+  stripReferenceMarkers: stripReferenceMarkersText,
+};

internal/js/chat-stream/token_usage.js

@@ -1,13 +1,15 @@
 'use strict';
 
-function buildUsage(prompt, thinking, output) {
+function buildUsage(prompt, thinking, output, outputTokens = 0) {
   const promptTokens = estimateTokens(prompt);
   const reasoningTokens = estimateTokens(thinking);
   const completionTokens = estimateTokens(output);
+  const overriddenCompletionTokens = Number.isFinite(outputTokens) && outputTokens > 0 ? Math.trunc(outputTokens) : 0;
+  const finalCompletionTokens = overriddenCompletionTokens > 0 ? overriddenCompletionTokens : reasoningTokens + completionTokens;
   return {
     prompt_tokens: promptTokens,
-    completion_tokens: reasoningTokens + completionTokens,
-    total_tokens: promptTokens + reasoningTokens + completionTokens,
+    completion_tokens: finalCompletionTokens,
+    total_tokens: promptTokens + finalCompletionTokens,
     completion_tokens_details: {
       reasoning_tokens: reasoningTokens,
     },
@@ -15,7 +17,7 @@ function buildUsage(prompt, thinking, output) {
 }
 
 function estimateTokens(text) {
-  const t = asString(text);
+  const t = asTokenString(text);
   if (!t) {
     return 0;
   }
@@ -32,17 +34,17 @@ function estimateTokens(text) {
   return n < 1 ? 1 : n;
 }
 
-function asString(v) {
+function asTokenString(v) {
   if (typeof v === 'string') {
-    return v.trim();
+    return v;
   }
   if (Array.isArray(v)) {
-    return asString(v[0]);
+    return asTokenString(v[0]);
   }
   if (v == null) {
     return '';
   }
-  return String(v).trim();
+  return String(v);
 }
 
 module.exports = {

internal/js/chat-stream/vercel_stream.js

@@ -1,295 +1,3 @@
 'use strict';
 
-const {
-  createToolSieveState,
-  processToolSieveChunk,
-  flushToolSieve,
-  parseStandaloneToolCalls,
-  formatOpenAIStreamToolCalls,
-} = require('../helpers/stream-tool-sieve');
-const { BASE_HEADERS } = require('../shared/deepseek-constants');
-const { writeOpenAIError } = require('./error_shape');
-const { parseChunkForContent, isCitation } = require('./sse_parse');
-const { buildUsage } = require('./token_usage');
-const {
-  resolveToolcallPolicy,
-  formatIncrementalToolCallDeltas,
-  filterIncrementalToolCallDeltasByAllowed,
-} = require('./toolcall_policy');
-const { createChatCompletionEmitter } = require('./stream_emitter');
-const {
-  asString,
-  isAbortError,
-  fetchStreamPrepare,
-  relayPreparedFailure,
-  safeReadText,
-  createLeaseReleaser,
-} = require('./http_internal');
-
-const DEEPSEEK_COMPLETION_URL = 'https://chat.deepseek.com/api/v0/chat/completion';
-
-async function handleVercelStream(req, res, rawBody, payload) {
-  const prep = await fetchStreamPrepare(req, rawBody);
-  if (!prep.ok) {
-    relayPreparedFailure(res, prep);
-    return;
-  }
-
-  const model = asString(prep.body.model) || asString(payload.model);
-  const sessionID = asString(prep.body.session_id) || `chatcmpl-${Date.now()}`;
-  const leaseID = asString(prep.body.lease_id);
-  const deepseekToken = asString(prep.body.deepseek_token);
-  const powHeader = asString(prep.body.pow_header);
-  const completionPayload = prep.body.payload && typeof prep.body.payload === 'object' ? prep.body.payload : null;
-  const finalPrompt = asString(prep.body.final_prompt);
-  const thinkingEnabled = toBool(prep.body.thinking_enabled);
-  const searchEnabled = toBool(prep.body.search_enabled);
-  const toolPolicy = resolveToolcallPolicy(prep.body, payload.tools);
-  const toolNames = toolPolicy.toolNames;
-  const emitEarlyToolDeltas = toolPolicy.emitEarlyToolDeltas;
-
-  if (!model || !leaseID || !deepseekToken || !powHeader || !completionPayload) {
-    writeOpenAIError(res, 500, 'invalid vercel prepare response');
-    return;
-  }
-
-  const releaseLease = createLeaseReleaser(req, leaseID);
-  const upstreamController = new AbortController();
-  let clientClosed = false;
-  let reader = null;
-  const markClientClosed = () => {
-    if (clientClosed) {
-      return;
-    }
-    clientClosed = true;
-    upstreamController.abort();
-    if (reader && typeof reader.cancel === 'function') {
-      Promise.resolve(reader.cancel()).catch(() => {});
-    }
-  };
-  const onReqAborted = () => markClientClosed();
-  const onResClose = () => {
-    if (!res.writableEnded) {
-      markClientClosed();
-    }
-  };
-  req.on('aborted', onReqAborted);
-  res.on('close', onResClose);
-
-  try {
-    let completionRes;
-    try {
-      completionRes = await fetch(DEEPSEEK_COMPLETION_URL, {
-        method: 'POST',
-        headers: {
-          ...BASE_HEADERS,
-          authorization: `Bearer ${deepseekToken}`,
-          'x-ds-pow-response': powHeader,
-        },
-        body: JSON.stringify(completionPayload),
-        signal: upstreamController.signal,
-      });
-    } catch (err) {
-      if (clientClosed || isAbortError(err)) {
-        return;
-      }
-      throw err;
-    }
-    if (clientClosed) {
-      return;
-    }
-
-    if (!completionRes.ok || !completionRes.body) {
-      const detail = await safeReadText(completionRes);
-      writeOpenAIError(res, 500, detail ? `Failed to get completion: ${detail}` : 'Failed to get completion.');
-      return;
-    }
-
-    res.statusCode = 200;
-    res.setHeader('Content-Type', 'text/event-stream');
-    res.setHeader('Cache-Control', 'no-cache, no-transform');
-    res.setHeader('Connection', 'keep-alive');
-    res.setHeader('X-Accel-Buffering', 'no');
-    if (typeof res.flushHeaders === 'function') {
-      res.flushHeaders();
-    }
-
-    const created = Math.floor(Date.now() / 1000);
-    let currentType = thinkingEnabled ? 'thinking' : 'text';
-    let thinkingText = '';
-    let outputText = '';
-    const toolSieveEnabled = toolPolicy.toolSieveEnabled;
-    const toolSieveState = createToolSieveState();
-    let toolCallsEmitted = false;
-    const streamToolCallIDs = new Map();
-    const streamToolNames = new Map();
-    const decoder = new TextDecoder();
-    reader = completionRes.body.getReader();
-    let buffered = '';
-    let ended = false;
-    const { sendFrame, sendDeltaFrame } = createChatCompletionEmitter({
-      res,
-      sessionID,
-      created,
-      model,
-      isClosed: () => clientClosed,
-    });
-
-    const finish = async (reason) => {
-      if (ended) {
-        return;
-      }
-      ended = true;
-      if (clientClosed || res.writableEnded || res.destroyed) {
-        await releaseLease();
-        return;
-      }
-      const detected = parseStandaloneToolCalls(outputText, toolNames);
-      if (detected.length > 0 && !toolCallsEmitted) {
-        toolCallsEmitted = true;
-        sendDeltaFrame({ tool_calls: formatOpenAIStreamToolCalls(detected, streamToolCallIDs) });
-      } else if (toolSieveEnabled) {
-        const tailEvents = flushToolSieve(toolSieveState, toolNames);
-        for (const evt of tailEvents) {
-          if (evt.type === 'tool_calls' && Array.isArray(evt.calls) && evt.calls.length > 0) {
-            toolCallsEmitted = true;
-            sendDeltaFrame({ tool_calls: formatOpenAIStreamToolCalls(evt.calls, streamToolCallIDs) });
-            continue;
-          }
-          if (evt.text) {
-            sendDeltaFrame({ content: evt.text });
-          }
-        }
-      }
-      if (detected.length > 0 || toolCallsEmitted) {
-        reason = 'tool_calls';
-      }
-      sendFrame({
-        id: sessionID,
-        object: 'chat.completion.chunk',
-        created,
-        model,
-        choices: [{ delta: {}, index: 0, finish_reason: reason }],
-        usage: buildUsage(finalPrompt, thinkingText, outputText),
-      });
-      if (!res.writableEnded && !res.destroyed) {
-        res.write('data: [DONE]\n\n');
-      }
-      await releaseLease();
-      if (!res.writableEnded && !res.destroyed) {
-        res.end();
-      }
-    };
-
-    try {
-      // eslint-disable-next-line no-constant-condition
-      while (true) {
-        if (clientClosed) {
-          await finish('stop');
-          return;
-        }
-        const { value, done } = await reader.read();
-        if (done) {
-          break;
-        }
-        buffered += decoder.decode(value, { stream: true });
-        const lines = buffered.split('\n');
-        buffered = lines.pop() || '';
-
-        for (const rawLine of lines) {
-          const line = rawLine.trim();
-          if (!line.startsWith('data:')) {
-            continue;
-          }
-          const dataStr = line.slice(5).trim();
-          if (!dataStr) {
-            continue;
-          }
-          if (dataStr === '[DONE]') {
-            await finish('stop');
-            return;
-          }
-          let chunk;
-          try {
-            chunk = JSON.parse(dataStr);
-          } catch (_err) {
-            continue;
-          }
-          if (chunk.error || chunk.code === 'content_filter') {
-            await finish('content_filter');
-            return;
-          }
-          const parsed = parseChunkForContent(chunk, thinkingEnabled, currentType);
-          currentType = parsed.newType;
-          if (parsed.finished) {
-            await finish('stop');
-            return;
-          }
-
-          for (const p of parsed.parts) {
-            if (!p.text) {
-              continue;
-            }
-            if (searchEnabled && isCitation(p.text)) {
-              continue;
-            }
-            if (p.type === 'thinking') {
-              if (thinkingEnabled) {
-                thinkingText += p.text;
-                sendDeltaFrame({ reasoning_content: p.text });
-              }
-            } else {
-              outputText += p.text;
-              if (!toolSieveEnabled) {
-                sendDeltaFrame({ content: p.text });
-                continue;
-              }
-              const events = processToolSieveChunk(toolSieveState, p.text, toolNames);
-              for (const evt of events) {
-                if (evt.type === 'tool_call_deltas') {
-                  if (!emitEarlyToolDeltas) {
-                    continue;
-                  }
-                  const filtered = filterIncrementalToolCallDeltasByAllowed(evt.deltas, toolNames, streamToolNames);
-                  const formatted = formatIncrementalToolCallDeltas(filtered, streamToolCallIDs);
-                  if (formatted.length > 0) {
-                    toolCallsEmitted = true;
-                    sendDeltaFrame({ tool_calls: formatted });
-                  }
-                  continue;
-                }
-                if (evt.type === 'tool_calls') {
-                  toolCallsEmitted = true;
-                  sendDeltaFrame({ tool_calls: formatOpenAIStreamToolCalls(evt.calls, streamToolCallIDs) });
-                  continue;
-                }
-                if (evt.text) {
-                  sendDeltaFrame({ content: evt.text });
-                }
-              }
-            }
-          }
-        }
-      }
-      await finish('stop');
-    } catch (err) {
-      if (clientClosed || isAbortError(err)) {
-        await finish('stop');
-        return;
-      }
-      await finish('stop');
-    }
-  } finally {
-    req.removeListener('aborted', onReqAborted);
-    res.removeListener('close', onResClose);
-    await releaseLease();
-  }
-}
-
-function toBool(v) {
-  return v === true;
-}
-
-module.exports = {
-  handleVercelStream,
-};
+module.exports = require('./vercel_stream_impl');

internal/js/chat-stream/vercel_stream_impl.js

@@ -0,0 +1,310 @@
+'use strict';
+
+// Implementation moved here to keep the line-gate wrapper tiny.
+
+const {
+  createToolSieveState,
+  processToolSieveChunk,
+  flushToolSieve,
+  parseStandaloneToolCalls,
+  formatOpenAIStreamToolCalls,
+} = require('../helpers/stream-tool-sieve');
+const { BASE_HEADERS } = require('../shared/deepseek-constants');
+const { writeOpenAIError } = require('./error_shape');
+const { parseChunkForContent, isCitation } = require('./sse_parse');
+const { buildUsage } = require('./token_usage');
+const {
+  resolveToolcallPolicy,
+  formatIncrementalToolCallDeltas,
+  filterIncrementalToolCallDeltasByAllowed,
+  boolDefaultTrue,
+} = require('./toolcall_policy');
+const { createChatCompletionEmitter } = require('./stream_emitter');
+const {
+  asString,
+  isAbortError,
+  fetchStreamPrepare,
+  relayPreparedFailure,
+  createLeaseReleaser,
+} = require('./http_internal');
+
+const DEEPSEEK_COMPLETION_URL = 'https://chat.deepseek.com/api/v0/chat/completion';
+
+async function handleVercelStream(req, res, rawBody, payload) {
+  const prep = await fetchStreamPrepare(req, rawBody);
+  if (!prep.ok) {
+    relayPreparedFailure(res, prep);
+    return;
+  }
+
+  const model = asString(prep.body.model) || asString(payload.model);
+  const sessionID = asString(prep.body.session_id) || `chatcmpl-${Date.now()}`;
+  const leaseID = asString(prep.body.lease_id);
+  const deepseekToken = asString(prep.body.deepseek_token);
+  const powHeader = asString(prep.body.pow_header);
+  const completionPayload = prep.body.payload && typeof prep.body.payload === 'object' ? prep.body.payload : null;
+  const finalPrompt = asString(prep.body.final_prompt);
+  const thinkingEnabled = toBool(prep.body.thinking_enabled);
+  const searchEnabled = toBool(prep.body.search_enabled);
+  const toolPolicy = resolveToolcallPolicy(prep.body, payload.tools);
+  const toolNames = toolPolicy.toolNames;
+  const emitEarlyToolDeltas = toolPolicy.emitEarlyToolDeltas;
+  const stripReferenceMarkers = boolDefaultTrue(prep.body.compat && prep.body.compat.strip_reference_markers);
+
+  if (!model || !leaseID || !deepseekToken || !powHeader || !completionPayload) {
+    writeOpenAIError(res, 500, 'invalid vercel prepare response');
+    return;
+  }
+
+  const releaseLease = createLeaseReleaser(req, leaseID);
+  const upstreamController = new AbortController();
+  let clientClosed = false;
+  let reader = null;
+  const markClientClosed = () => {
+    if (clientClosed) {
+      return;
+    }
+    clientClosed = true;
+    upstreamController.abort();
+    if (reader && typeof reader.cancel === 'function') {
+      Promise.resolve(reader.cancel()).catch(() => {});
+    }
+  };
+  const onReqAborted = () => markClientClosed();
+  const onResClose = () => {
+    if (!res.writableEnded) {
+      markClientClosed();
+    }
+  };
+  req.on('aborted', onReqAborted);
+  res.on('close', onResClose);
+
+  try {
+    let completionRes;
+    try {
+      completionRes = await fetch(DEEPSEEK_COMPLETION_URL, {
+        method: 'POST',
+        headers: {
+          ...BASE_HEADERS,
+          authorization: `Bearer ${deepseekToken}`,
+          'x-ds-pow-response': powHeader,
+        },
+        body: JSON.stringify(completionPayload),
+        signal: upstreamController.signal,
+      });
+    } catch (err) {
+      if (clientClosed || isAbortError(err)) {
+        return;
+      }
+      throw err;
+    }
+    if (clientClosed) {
+      return;
+    }
+
+    if (!completionRes.ok || !completionRes.body) {
+      const detail = completionRes.body ? await completionRes.text() : '';
+      const status = completionRes.ok ? 500 : completionRes.status || 500;
+      writeOpenAIError(res, status, detail);
+      return;
+    }
+
+    res.statusCode = 200;
+    res.setHeader('Content-Type', 'text/event-stream');
+    res.setHeader('Cache-Control', 'no-cache, no-transform');
+    res.setHeader('Connection', 'keep-alive');
+    res.setHeader('X-Accel-Buffering', 'no');
+    if (typeof res.flushHeaders === 'function') {
+      res.flushHeaders();
+    }
+
+    const created = Math.floor(Date.now() / 1000);
+    let currentType = thinkingEnabled ? 'thinking' : 'text';
+    let thinkingText = '';
+    let outputText = '';
+    let outputTokens = 0;
+    const toolSieveEnabled = toolPolicy.toolSieveEnabled;
+    const toolSieveState = createToolSieveState();
+    let toolCallsEmitted = false;
+    const streamToolCallIDs = new Map();
+    const streamToolNames = new Map();
+    const decoder = new TextDecoder();
+    reader = completionRes.body.getReader();
+    let buffered = '';
+    let ended = false;
+    const { sendFrame, sendDeltaFrame } = createChatCompletionEmitter({
+      res,
+      sessionID,
+      created,
+      model,
+      isClosed: () => clientClosed,
+    });
+
+    const finish = async (reason) => {
+      if (ended) {
+        return;
+      }
+      ended = true;
+      if (clientClosed || res.writableEnded || res.destroyed) {
+        await releaseLease();
+        return;
+      }
+      const detected = parseStandaloneToolCalls(outputText, toolNames);
+      if (detected.length > 0 && !toolCallsEmitted) {
+        toolCallsEmitted = true;
+        sendDeltaFrame({ tool_calls: formatOpenAIStreamToolCalls(detected, streamToolCallIDs) });
+      } else if (toolSieveEnabled) {
+        const tailEvents = flushToolSieve(toolSieveState, toolNames);
+        for (const evt of tailEvents) {
+          if (evt.type === 'tool_calls' && Array.isArray(evt.calls) && evt.calls.length > 0) {
+            toolCallsEmitted = true;
+            sendDeltaFrame({ tool_calls: formatOpenAIStreamToolCalls(evt.calls, streamToolCallIDs) });
+            continue;
+          }
+          if (evt.text) {
+            sendDeltaFrame({ content: evt.text });
+          }
+        }
+      }
+      if (detected.length > 0 || toolCallsEmitted) {
+        reason = 'tool_calls';
+      }
+      sendFrame({
+        id: sessionID,
+        object: 'chat.completion.chunk',
+        created,
+        model,
+        choices: [{ delta: {}, index: 0, finish_reason: reason }],
+        usage: buildUsage(finalPrompt, thinkingText, outputText, outputTokens),
+      });
+      if (!res.writableEnded && !res.destroyed) {
+        res.write('data: [DONE]\n\n');
+      }
+      await releaseLease();
+      if (!res.writableEnded && !res.destroyed) {
+        res.end();
+      }
+    };
+
+    try {
+      // eslint-disable-next-line no-constant-condition
+      while (true) {
+        if (clientClosed) {
+          await finish('stop');
+          return;
+        }
+        const { value, done } = await reader.read();
+        if (done) {
+          break;
+        }
+        buffered += decoder.decode(value, { stream: true });
+        const lines = buffered.split('\n');
+        buffered = lines.pop() || '';
+
+        for (const rawLine of lines) {
+          const line = rawLine.trim();
+          if (!line.startsWith('data:')) {
+            continue;
+          }
+          const dataStr = line.slice(5).trim();
+          if (!dataStr) {
+            continue;
+          }
+          if (dataStr === '[DONE]') {
+            await finish('stop');
+            return;
+          }
+          let chunk;
+          try {
+            chunk = JSON.parse(dataStr);
+          } catch (_err) {
+            continue;
+          }
+          const parsed = parseChunkForContent(chunk, thinkingEnabled, currentType, stripReferenceMarkers);
+          if (!parsed.parsed) {
+            continue;
+          }
+          if (parsed.outputTokens > 0) {
+            outputTokens = parsed.outputTokens;
+          }
+          currentType = parsed.newType;
+          if (parsed.errorMessage) {
+            await finish('content_filter');
+            return;
+          }
+          if (parsed.contentFilter) {
+            await finish('stop');
+            return;
+          }
+          if (parsed.finished) {
+            await finish('stop');
+            return;
+          }
+
+          for (const p of parsed.parts) {
+            if (!p.text) {
+              continue;
+            }
+            if (searchEnabled && isCitation(p.text)) {
+              continue;
+            }
+            if (p.type === 'thinking') {
+              if (thinkingEnabled) {
+                thinkingText += p.text;
+                sendDeltaFrame({ reasoning_content: p.text });
+              }
+            } else {
+              outputText += p.text;
+              if (!toolSieveEnabled) {
+                sendDeltaFrame({ content: p.text });
+                continue;
+              }
+              const events = processToolSieveChunk(toolSieveState, p.text, toolNames);
+              for (const evt of events) {
+                if (evt.type === 'tool_call_deltas') {
+                  if (!emitEarlyToolDeltas) {
+                    continue;
+                  }
+                  const filtered = filterIncrementalToolCallDeltasByAllowed(evt.deltas, toolNames, streamToolNames);
+                  const formatted = formatIncrementalToolCallDeltas(filtered, streamToolCallIDs);
+                  if (formatted.length > 0) {
+                    toolCallsEmitted = true;
+                    sendDeltaFrame({ tool_calls: formatted });
+                  }
+                  continue;
+                }
+                if (evt.type === 'tool_calls') {
+                  toolCallsEmitted = true;
+                  sendDeltaFrame({ tool_calls: formatOpenAIStreamToolCalls(evt.calls, streamToolCallIDs) });
+                  continue;
+                }
+                if (evt.text) {
+                  sendDeltaFrame({ content: evt.text });
+                }
+              }
+            }
+          }
+        }
+      }
+      await finish('stop');
+    } catch (err) {
+      if (clientClosed || isAbortError(err)) {
+        await finish('stop');
+        return;
+      }
+      await finish('stop');
+    }
+  } finally {
+    req.removeListener('aborted', onReqAborted);
+    res.removeListener('close', onResClose);
+    await releaseLease();
+  }
+}
+
+function toBool(v) {
+  return v === true;
+}
+
+module.exports = {
+  handleVercelStream,
+};

internal/prompt/messages.go

@@ -9,6 +9,16 @@ import (
 
 var markdownImagePattern = regexp.MustCompile(`!\[(.*?)\]\((.*?)\)`)
 
+const (
+	systemMarker          = "<｜System｜>"
+	userMarker            = "<｜User｜>"
+	assistantMarker       = "<｜Assistant｜>"
+	toolMarker            = "<｜Tool｜>"
+	endSentenceMarker     = "<｜end▁of▁sentence｜>"
+	endToolResultsMarker  = "<｜end▁of▁toolresults｜>"
+	endInstructionsMarker = "<｜end▁of▁instructions｜>"
+)
+
 func MessagesPrepare(messages []map[string]any) string {
 	type block struct {
 		Role string
@@ -32,33 +42,39 @@ func MessagesPrepare(messages []map[string]any) string {
 		merged = append(merged, msg)
 	}
 	parts := make([]string, 0, len(merged))
-	for i, m := range merged {
+	for _, m := range merged {
 		switch m.Role {
 		case "assistant":
-			parts = append(parts, "<｜Assistant｜>"+m.Text+"<｜end▁of▁sentence｜>")
+			parts = append(parts, formatRoleBlock(assistantMarker, m.Text, endSentenceMarker))
 		case "tool":
-			if i > 0 {
-				parts = append(parts, "<｜Tool｜>"+m.Text)
-			} else {
-				parts = append(parts, m.Text)
+			if strings.TrimSpace(m.Text) != "" {
+				parts = append(parts, formatRoleBlock(toolMarker, m.Text, endToolResultsMarker))
 			}
 		case "system":
-			// Clear system boundary improves R1 and V3 context understanding significantly
-			if strings.TrimSpace(m.Text) != "" {
-				parts = append(parts, "<system_instructions>\n"+strings.TrimSpace(m.Text)+"\n</system_instructions>\n\n")
+			if text := strings.TrimSpace(m.Text); text != "" {
+				parts = append(parts, formatRoleBlock(systemMarker, text, endInstructionsMarker))
 			}
 		case "user":
-			// Always prepend <｜User｜> to user messages. DeepSeek R1 reasoning triggers best
-			// and aligns context perfectly when the user turn is explicitly marked.
-			parts = append(parts, "<｜User｜>"+m.Text)
+			parts = append(parts, formatRoleBlock(userMarker, m.Text, endSentenceMarker))
 		default:
-			parts = append(parts, m.Text)
+			if strings.TrimSpace(m.Text) != "" {
+				parts = append(parts, m.Text)
+			}
 		}
 	}
-	out := strings.Join(parts, "")
+	out := strings.Join(parts, "\n\n")
 	return markdownImagePattern.ReplaceAllString(out, `[${1}](${2})`)
 }
 
+// DeepSeek-style turn suffixes stay attached to the same block as the role content.
+func formatRoleBlock(marker, text, endMarker string) string {
+	out := marker + "\n" + text
+	if strings.TrimSpace(endMarker) != "" {
+		out += endMarker
+	}
+	return out
+}
+
 func NormalizeContent(v any) string {
 	if v == nil {
 		return ""