diff --git a/API.en.md b/API.en.md
index eccefc6..73d6eaa 100644
--- a/API.en.md
+++ b/API.en.md
@@ -98,7 +98,9 @@ Gemini-compatible clients can also send `x-goog-api-key`, `?key=`, or `?api_key=
 | Method | Path | Auth | Description |
 | --- | --- | --- | --- |
 | GET | `/healthz` | None | Liveness probe |
+| HEAD | `/healthz` | None | Liveness probe (no body) |
 | GET | `/readyz` | None | Readiness probe |
+| HEAD | `/readyz` | None | Readiness probe (no body) |
 | GET | `/v1/models` | None | OpenAI model list |
 | GET | `/v1/models/{id}` | None | OpenAI single-model query (alias accepted) |
 | POST | `/v1/chat/completions` | Business | OpenAI chat completions |
diff --git a/API.md b/API.md
index a42a0fc..061529e 100644
--- a/API.md
+++ b/API.md
@@ -98,7 +98,9 @@ Gemini 兼容客户端还可以使用 `x-goog-api-key`、`?key=` 或 `?api_key=`
 | 方法 | 路径 | 鉴权 | 说明 |
 | --- | --- | --- | --- |
 | GET | `/healthz` | 无 | 存活探针 |
+| HEAD | `/healthz` | 无 | 存活探针（无响应体） |
 | GET | `/readyz` | 无 | 就绪探针 |
+| HEAD | `/readyz` | 无 | 就绪探针（无响应体） |
 | GET | `/v1/models` | 无 | OpenAI 模型列表 |
 | GET | `/v1/models/{id}` | 无 | OpenAI 单模型查询（支持 alias 入参） |
 | POST | `/v1/chat/completions` | 业务 | OpenAI 对话补全 |
diff --git a/README.MD b/README.MD
index 864336d..e6c6229 100644
--- a/README.MD
+++ b/README.MD
@@ -28,28 +28,28 @@
 
 ```mermaid
 flowchart LR
-    Client["🖥️ 客户端\n(OpenAI / Claude / Gemini 兼容)"]
+    Client["🖥️ 客户端 / SDK\n(OpenAI / Claude / Gemini)"]
 
-    subgraph DS2API["DS2API 服务"]
-        direction TB
-        CORS["CORS 中间件"]
-        Auth["🔐 鉴权中间件"]
+    subgraph DS2API["DS2API 3.0（统一 Go 路由内核）"]
+        Router["chi Router + 中间件\n(RequestID / Recoverer / CORS / Timeout)"]
 
-        subgraph Adapters["适配器层"]
-            OA["OpenAI 适配器\n/v1/*"]
-            CA["Claude 适配器\n/anthropic/*"]
-            GA["Gemini 适配器\n/v1beta/models/*"]
+        subgraph Adapters["协议适配层"]
+            OA["OpenAI\n/v1/*"]
+            CA["Claude\n/anthropic/* + /v1/messages"]
+            GA["Gemini\n/v1beta/models/* + /v1/models/*"]
         end
 
-        subgraph Support["支撑模块"]
-            Pool["📦 账号池 / 并发队列"]
-            PoW["⚙️ PoW WASM\n(wazero)"]
-            Stream["🌊 统一流式引擎\nstream + sse"]
-            Sieve["🧰 Tool Sieve\nGo + Node 对齐"]
+        subgraph Runtime["运行时与核心能力"]
+            Auth["Auth Resolver\n(API key / bearer / x-goog-api-key)"]
+            Pool["Account Pool + Queue\n(并发与轮询)"]
+            DS["DeepSeek Client\n(Session / Auth / HTTP)"]
+            Pow["PoW WASM (wazero)"]
+            Tool["Tool Sieve\n(Go/Node 语义对齐)"]
+            Format["Response Render\n(OpenAI/Claude/Gemini)"]
         end
 
-        Admin["🛠️ Admin API\n/admin/*"]
-        WebUI["🌐 WebUI\n(/admin)"]
+        Admin["Admin API\n/admin/*"]
+        WebUI["WebUI Static\n/admin"]
     end
 
     DS["☁️ DeepSeek API"]
@@ -425,6 +425,7 @@ go run ./cmd/ds2api
 
 ```text
 ds2api/
+├── app/                    # 统一 Handler 入口（供 Vercel / 本地共用）
 ├── cmd/
 │   ├── ds2api/              # 本地 / 容器启动入口
 │   └── ds2api-tests/        # 端到端测试集入口
diff --git a/README.en.md b/README.en.md
index 3b2eeca..7ca9a60 100644
--- a/README.en.md
+++ b/README.en.md
@@ -28,28 +28,28 @@ DS2API converts DeepSeek Web chat capability into OpenAI-compatible, Claude-comp
 
 ```mermaid
 flowchart LR
-    Client["🖥️ Clients\n(OpenAI / Claude / Gemini compat)"]
+    Client["🖥️ Clients / SDKs\n(OpenAI / Claude / Gemini)"]
 
-    subgraph DS2API["DS2API Service"]
-        direction TB
-        CORS["CORS Middleware"]
-        Auth["🔐 Auth Middleware"]
+    subgraph DS2API["DS2API 3.0 (Unified Go Routing Core)"]
+        Router["chi Router + Middleware\n(RequestID / Recoverer / CORS / Timeout)"]
 
-        subgraph Adapters["Adapter Layer"]
-            OA["OpenAI Adapter\n/v1/*"]
-            CA["Claude Adapter\n/anthropic/*"]
-            GA["Gemini Adapter\n/v1beta/models/*"]
+        subgraph Adapters["Protocol Adapters"]
+            OA["OpenAI\n/v1/*"]
+            CA["Claude\n/anthropic/* + /v1/messages"]
+            GA["Gemini\n/v1beta/models/* + /v1/models/*"]
         end
 
-        subgraph Support["Support Modules"]
-            Pool["📦 Account Pool / Queue"]
-            PoW["⚙️ PoW WASM\n(wazero)"]
-            Stream["🌊 Unified Streaming\nstream + sse"]
-            Sieve["🧰 Tool Sieve\nGo + Node parity"]
+        subgraph Runtime["Runtime + Core Capabilities"]
+            Auth["Auth Resolver\n(API key / bearer / x-goog-api-key)"]
+            Pool["Account Pool + Queue\n(concurrency and rotation)"]
+            DS["DeepSeek Client\n(session / auth / HTTP)"]
+            Pow["PoW WASM (wazero)"]
+            Tool["Tool Sieve\n(Go/Node semantic parity)"]
+            Format["Response Render\n(OpenAI/Claude/Gemini)"]
         end
 
-        Admin["🛠️ Admin API\n/admin/*"]
-        WebUI["🌐 WebUI\n(/admin)"]
+        Admin["Admin API\n/admin/*"]
+        WebUI["WebUI Static\n/admin"]
     end
 
     DS["☁️ DeepSeek API"]
@@ -419,6 +419,7 @@ Response fields include:
 
 ```text
 ds2api/
+├── app/                    # Unified handler entry (shared by Vercel/local)
 ├── cmd/
 │   ├── ds2api/              # Local / container entrypoint
 │   └── ds2api-tests/        # End-to-end testsuite entrypoint
diff --git a/docs/CONTRIBUTING.en.md b/docs/CONTRIBUTING.en.md
index e748d2b..dd8ee2c 100644
--- a/docs/CONTRIBUTING.en.md
+++ b/docs/CONTRIBUTING.en.md
@@ -94,6 +94,7 @@ Manually build WebUI to `static/admin/`:
 
 ```text
 ds2api/
+├── app/                    # Unified handler entry (shared by Vercel/local)
 ├── cmd/
 │   ├── ds2api/              # Local/container entrypoint
 │   └── ds2api-tests/        # End-to-end testsuite entrypoint
diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index a32b8b6..5c55a99 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -94,6 +94,7 @@ docker-compose -f docker-compose.dev.yml up
 
 ```text
 ds2api/
+├── app/                    # 统一 Handler 入口（供 Vercel / 本地共用）
 ├── cmd/
 │   ├── ds2api/              # 本地/容器启动入口
 │   └── ds2api-tests/        # 端到端测试集入口