feat: 新增 thinking 注入配置支持，扩展设置管理与前端交互

新增 promptcompat 和 OpenAI shared 层的 thinking 注入逻辑，
完善配置系统的编解码与校验，更新设置管理 API 与前端 UI。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

webui/src/features/settings/BehaviorSection.jsx

@@ -28,6 +28,24 @@ export default function BehaviorSection({ t, form, setForm }) {
                         className="w-full bg-background border border-border rounded-lg px-3 py-2"
                     />
                 </label>
+                <label className="flex items-start gap-3 rounded-lg border border-border bg-background/60 p-4">
+                    <input
+                        type="checkbox"
+                        checked={Boolean(form.thinking_injection?.enabled ?? true)}
+                        onChange={(e) => setForm((prev) => ({
+                            ...prev,
+                            thinking_injection: {
+                                ...prev.thinking_injection,
+                                enabled: e.target.checked,
+                            },
+                        }))}
+                        className="mt-1 h-4 w-4 rounded border-border"
+                    />
+                    <div className="space-y-1">
+                        <span className="text-sm font-medium block">{t('settings.thinkingInjectionEnabled')}</span>
+                        <span className="text-xs text-muted-foreground block">{t('settings.thinkingInjectionDesc')}</span>
+                    </div>
+                </label>
             </div>
         </div>
     )

webui/src/features/settings/HistorySplitSection.jsx

@@ -9,10 +9,19 @@ export default function HistorySplitSection({ t, form, setForm }) {
                 <label className="flex items-start gap-3 rounded-lg border border-border bg-background/60 p-4">
                     <input
                         type="checkbox"
-                        checked
-                        disabled
-                        readOnly
-                        className="mt-1 h-4 w-4 rounded border-border disabled:opacity-70"
+                        checked={Boolean(form.history_split?.enabled)}
+                        onChange={(e) => setForm((prev) => ({
+                            ...prev,
+                            history_split: {
+                                ...prev.history_split,
+                                enabled: e.target.checked,
+                            },
+                            current_input_file: {
+                                ...prev.current_input_file,
+                                enabled: e.target.checked ? false : Boolean(prev.current_input_file?.enabled),
+                            },
+                        }))}
+                        className="mt-1 h-4 w-4 rounded border-border"
                     />
                     <div className="space-y-1">
                         <span className="text-sm font-medium block">{t('settings.historySplitEnabled')}</span>
@@ -25,7 +34,7 @@ export default function HistorySplitSection({ t, form, setForm }) {
                         type="number"
                         min={1}
                         max={1000}
-                        value={form.history_split.trigger_after_turns}
+                        value={form.history_split?.trigger_after_turns || 1}
                         onChange={(e) => setForm((prev) => ({
                             ...prev,
                             history_split: {
@@ -38,6 +47,49 @@ export default function HistorySplitSection({ t, form, setForm }) {
                     <p className="text-xs text-muted-foreground">{t('settings.historySplitTriggerHelp')}</p>
                 </label>
             </div>
+            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+                <label className="flex items-start gap-3 rounded-lg border border-border bg-background/60 p-4">
+                    <input
+                        type="checkbox"
+                        checked={Boolean(form.current_input_file?.enabled)}
+                        onChange={(e) => setForm((prev) => ({
+                            ...prev,
+                            history_split: {
+                                ...prev.history_split,
+                                enabled: e.target.checked ? false : Boolean(prev.history_split?.enabled),
+                            },
+                            current_input_file: {
+                                ...prev.current_input_file,
+                                enabled: e.target.checked,
+                            },
+                        }))}
+                        className="mt-1 h-4 w-4 rounded border-border"
+                    />
+                    <div className="space-y-1">
+                        <span className="text-sm font-medium block">{t('settings.currentInputFileEnabled')}</span>
+                        <span className="text-xs text-muted-foreground block">{t('settings.currentInputFileDesc')}</span>
+                    </div>
+                </label>
+                <label className="text-sm space-y-2">
+                    <span className="text-muted-foreground">{t('settings.currentInputFileMinChars')}</span>
+                    <input
+                        type="number"
+                        min={0}
+                        max={100000000}
+                        value={form.current_input_file?.min_chars ?? 0}
+                        onChange={(e) => setForm((prev) => ({
+                            ...prev,
+                            current_input_file: {
+                                ...prev.current_input_file,
+                                min_chars: Number(e.target.value || 0),
+                            },
+                        }))}
+                        className="w-full bg-background border border-border rounded-lg px-3 py-2"
+                    />
+                    <p className="text-xs text-muted-foreground">{t('settings.currentInputFileHelp')}</p>
+                </label>
+            </div>
+            <p className="text-xs text-muted-foreground">{t('settings.splitPassThroughHelp')}</p>
         </div>
     )
 }

webui/src/features/settings/useSettingsForm.js

@@ -17,7 +17,9 @@ const DEFAULT_FORM = {
     responses: { store_ttl_seconds: 900 },
     embeddings: { provider: '' },
     auto_delete: { mode: 'none' },
-    history_split: { enabled: true, trigger_after_turns: 1 },
+    history_split: { enabled: false, trigger_after_turns: 1 },
+    current_input_file: { enabled: true, min_chars: 0 },
+    thinking_injection: { enabled: true },
     model_aliases_text: '{}',
 }
 
@@ -50,6 +52,8 @@ function normalizeAutoDeleteMode(raw) {
 }
 
 function fromServerForm(data) {
+    const historySplitEnabled = Boolean(data.history_split?.enabled)
+    const currentInputFileEnabled = historySplitEnabled ? false : (data.current_input_file?.enabled ?? true)
     return {
         admin: { jwt_expire_hours: Number(data.admin?.jwt_expire_hours || 24) },
         runtime: {
@@ -71,14 +75,23 @@ function fromServerForm(data) {
             mode: normalizeAutoDeleteMode(data.auto_delete),
         },
         history_split: {
-            enabled: true,
+            enabled: historySplitEnabled,
             trigger_after_turns: Number(data.history_split?.trigger_after_turns || 1),
         },
+        current_input_file: {
+            enabled: currentInputFileEnabled,
+            min_chars: Number(data.current_input_file?.min_chars ?? 0),
+        },
+        thinking_injection: {
+            enabled: data.thinking_injection?.enabled ?? true,
+        },
         model_aliases_text: JSON.stringify(data.model_aliases || {}, null, 2),
     }
 }
 
 function toServerPayload(form) {
+    const historySplitEnabled = Boolean(form.history_split?.enabled)
+    const currentInputFileEnabled = historySplitEnabled ? false : Boolean(form.current_input_file?.enabled)
     return {
         admin: { jwt_expire_hours: Number(form.admin.jwt_expire_hours) },
         runtime: {
@@ -94,9 +107,16 @@ function toServerPayload(form) {
         embeddings: { provider: String(form.embeddings.provider || '').trim() },
         auto_delete: { mode: normalizeAutoDeleteMode(form.auto_delete) },
         history_split: {
-            enabled: true,
+            enabled: historySplitEnabled,
             trigger_after_turns: Number(form.history_split?.trigger_after_turns || 1),
         },
+        current_input_file: {
+            enabled: currentInputFileEnabled,
+            min_chars: Number(form.current_input_file?.min_chars ?? 0),
+        },
+        thinking_injection: {
+            enabled: Boolean(form.thinking_injection?.enabled ?? true),
+        },
     }
 }
 

webui/src/locales/en.json

@@ -373,12 +373,19 @@
         "behaviorTitle": "Behavior",
         "responsesTTL": "Responses store TTL (seconds)",
         "embeddingsProvider": "Embeddings provider",
-        "historySplitTitle": "History Split",
-        "historySplitDesc": "Pack earlier turns into an attached HISTORY.txt so the model reads the file first and then continues from the latest user request.",
-        "historySplitEnabled": "History split is forced on",
-        "historySplitEnabledDesc": "This capability is now enabled globally; legacy disabled values are ignored.",
+        "thinkingInjectionEnabled": "Thinking format injection",
+        "thinkingInjectionDesc": "Append a structured <think> checklist to the latest user message before prompt assembly.",
+        "historySplitTitle": "Context Split",
+        "historySplitDesc": "Choose one context-splitting mode to avoid inlining very long prompts.",
+        "historySplitEnabled": "Turn split (second turn by default)",
+        "historySplitEnabledDesc": "After the configured user-turn threshold, pack earlier conversation into HISTORY.txt.",
         "historySplitTriggerAfterTurns": "Trigger threshold (user turns)",
         "historySplitTriggerHelp": "Default is 1, which means history split starts from the second turn.",
+        "currentInputFileEnabled": "Independent split (by size)",
+        "currentInputFileDesc": "After the character threshold is reached, upload the full context as a hidden context file and skip HISTORY.txt.",
+        "currentInputFileMinChars": "Current input threshold (characters)",
+        "currentInputFileHelp": "Default is 0, which uses independent split whenever there is input.",
+        "splitPassThroughHelp": "Turn split and independent split are mutually exclusive; choose at most one. If both are unchecked, requests pass through directly without uploading split context files.",
         "compatibilityTitle": "Compatibility",
         "compatibilityDesc": "Compatibility controls that keep stream output closer to the wire format or safer for the web UI.",
         "stripReferenceMarkers": "Strip [reference:N] markers",

webui/src/locales/zh.json

@@ -373,12 +373,19 @@
         "behaviorTitle": "行为设置",
         "responsesTTL": "Responses 缓存 TTL（秒）",
         "embeddingsProvider": "Embeddings Provider",
-        "historySplitTitle": "历史拆分",
-        "historySplitDesc": "将更早的对话整理成 HISTORY.txt 上传，让模型优先读取历史文件，再结合最新一轮继续回答。",
-        "historySplitEnabled": "历史拆分已强制启用",
-        "historySplitEnabledDesc": "该能力现在全局开启；旧配置里的关闭值会被忽略。",
+        "thinkingInjectionEnabled": "思考格式注入",
+        "thinkingInjectionDesc": "在组装 prompt 前，将结构化 <think> 检查清单追加到最新用户消息末尾。",
+        "historySplitTitle": "上下文拆分",
+        "historySplitDesc": "选择一种上下文拆分方式，减少超长 prompt 直接内联。",
+        "historySplitEnabled": "轮次拆分（默认第二轮）",
+        "historySplitEnabledDesc": "从配置的用户回合数之后，将更早的对话整理成 HISTORY.txt。",
         "historySplitTriggerAfterTurns": "触发阈值（用户回合数）",
         "historySplitTriggerHelp": "默认值为 1，表示从第二轮开始拆分历史。",
+        "currentInputFileEnabled": "独立拆分（按量）",
+        "currentInputFileDesc": "达到字符阈值后，将完整上下文上传为隐藏上下文文件，并跳过 HISTORY.txt。",
+        "currentInputFileMinChars": "当前输入阈值（字符数）",
+        "currentInputFileHelp": "默认 0，表示有输入时就使用独立拆分。",
+        "splitPassThroughHelp": "轮次拆分和独立拆分互斥，只能选择一种；如果都不勾选，请求会直接透传，不上传拆分上下文文件。",
         "compatibilityTitle": "兼容性设置",
         "compatibilityDesc": "用于控制输出格式兼容性，避免把模型原始流里的标记直接暴露到前端。",
         "stripReferenceMarkers": "移除 [reference:N] 标记",