feature: langfuse thinking 及 文本edit的问题修复( #371); 省略 diff 以减少内存峰值 (#376)

* feat: langfuse tracing 增加 thinking 参数记录

在 recordLLMObservation 中添加 thinking 配置（type/budgetTokens），
所有 provider（claude/gemini/openai）及 tokenEstimation、sideQuery
调用处同步传递 thinking 信息，便于 Langfuse 面板观察 thinking 使用情况。

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

* fix: langfuse tracing 兼容 budget_tokens snake_case 格式

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

* fix: 统一传递完整 thinking 配置而非仅 thinkingType

Langfuse 追踪直接传递整个 thinking 对象（含 type 和 budget_tokens），
Analytics 日志同步补充 thinkingBudgetTokens 字段，logAPIQuery 改为
接收 ThinkingConfig 类型参数。

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

* feat: 省略旧消息的代码 diff 展示，仅保留最新消息的完整 diff

* fix: Edit 工具增加 Tab/空格规范化匹配，修复中文和缩进文件编辑失败

Read 工具输出将 Tab 渲染为空格，用户复制后 Edit 工具无法匹配。
在 findActualString 中增加 Tab→空格规范化回退匹配，并精确映射回原始文件位置。

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

* docs: README 添加安装/更新失败的解决方案提示

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

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

src/services/api/logging.ts

@@ -23,6 +23,7 @@ import { getAPIProviderForStatsig } from 'src/utils/model/providers.js'
 import type { PermissionMode } from 'src/utils/permissions/PermissionMode.js'
 import { jsonStringify } from 'src/utils/slowOperations.js'
 import { logOTelEvent } from 'src/utils/telemetry/events.js'
+import type { ThinkingConfig } from 'src/utils/thinking.js'
 import {
   endLLMRequestSpan,
   isBetaTracingEnabled,
@@ -176,7 +177,7 @@ export function logAPIQuery({
   permissionMode,
   querySource,
   queryTracking,
-  thinkingType,
+  thinkingConfig,
   effortValue,
   fastMode,
   previousRequestId,
@@ -188,11 +189,13 @@ export function logAPIQuery({
   permissionMode?: PermissionMode
   querySource: string
   queryTracking?: QueryChainTracking
-  thinkingType?: 'adaptive' | 'enabled' | 'disabled'
+  thinkingConfig?: ThinkingConfig
   effortValue?: EffortLevel | null
   fastMode?: boolean
   previousRequestId?: string | null
 }): void {
+  const thinkingType = thinkingConfig?.type ?? 'disabled'
+  const thinkingBudgetTokens = thinkingConfig?.type === 'enabled' ? thinkingConfig.budgetTokens : undefined
   logEvent('tengu_api_query', {
     model: model as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
     messagesLength,
@@ -219,6 +222,9 @@ export function logAPIQuery({
       : {}),
     thinkingType:
       thinkingType as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
+    ...(thinkingBudgetTokens !== undefined && {
+      thinkingBudgetTokens,
+    }),
     effortValue:
       effortValue as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
     fastMode,