feat: v0.8.1 记忆深化 · 观测闭环 · 体验收口 — 窗口/输出上限全局单一配置 · 2478 用例全量回归 + E2E 冒烟

硬性契约：删除代码中一切写死的上下文窗口与最大输出上限（含六家模型元信息
钳制与全部兜底值）——唯一合法来源是设置面板「上下文长度」（llm.contextWindow）
与「最大输出上限」（llm.maxTokens），跨 Provider/模型原样透传。

P0 正确性收口：
- 迁移 11/12（SCHEMA_VERSION 5）：记忆表 embedding 列 + 分 Provider 窗口键清理
- 记忆生命周期接线：会话终态清理 working memory / episodic 90 天 TTL / access_count 回写
- 回放缓冲模块化 + 会话终态清理（杜绝 4MB/会话内存滞留）
- i18n 收口：主进程 main-locale（zh/en，ui.locale 热切换）+ 渲染层 17 处出层

P1 能力演进：
- 本地向量混合检索：0.6×向量余弦 + 0.4×TF-IDF，Ollama embeddings 首次投产，
  存量记忆惰性回填，嵌入不可用自动回退 TF-IDF
- MEMORY.md 维护闭环：固化去重消除截断盲区；两阶段维护（AI 建议 → 用户确认 →
  原子改写 + 语义记忆双轨同步 + 审计）；>50KB 告警
- 可观测闭环：cacheTokens 引擎→前端透传（Token 面板命中率/成本行）+ 输入框
  上下文占用指示条
- MCP Prompts/Resources 对话可用：/mcp:{server}:{prompt} 与 @mcp:{server}:{uri}

P2 体验补全：
- 工具自定义策略（正则白/黑名单 + 频率 + 强制确认，热生效）
- 连续 ≥3 同类工具确认聚合为单弹框
- 会话消息游标分页（首屏 200 条向上翻页）
- 开机自启；Playwright + Electron E2E 冒烟（本地 mock LLM 零外联）

Review 回归修复：MCP 大小写失配 / 分页状态复位 / 清空=未配置语义（Number(null)=0
隐患）/ MEMORY.md 告警位置 / working_memories FK（迁移 13）/ 全局配置层废键清理；
附带根治权限加固启动时序、代理回环放行、safeStorage 降级、悬空 symlink 逃逸。

验证：typecheck/lint 0 问题；test:electron 2478/2478（0 跳过）；E2E 2/2；
docs/v0.8.1-迭代实施清单.md 全项留档。

package-lock.json

@@ -40,6 +40,7 @@
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         "@tailwindcss/typography": "^0.5.16",
         "@tailwindcss/vite": "^4.1.7",
         "@testing-library/jest-dom": "^7.0.1",
@@ -2448,6 +2449,22 @@
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       }
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+    "node_modules/@playwright/test": {
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+      "resolved": "https://registry.npmmirror.com/@playwright/test/-/test-1.62.1.tgz",
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+      "dependencies": {
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+      "bin": {
+        "playwright": "cli.js"
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+      "engines": {
+        "node": ">=20"
+      }
+    },
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@@ -10160,6 +10177,53 @@
         "url": "https://paulmillr.com/funding/"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.62.1",
+      "resolved": "https://registry.npmmirror.com/playwright/-/playwright-1.62.1.tgz",
+      "integrity": "sha512-0M+L3LAD8/nm554LOla9Ayx0j0tmFZ0FBcoQ7F1VuVHpM/XpiC8RcDzBQB8W5+hA8L22THxELzeF+2WcUzvcLg==",
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+      "license": "Apache-2.0",
+      "dependencies": {
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+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=20"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.62.1",
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+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=20"
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+    },
+    "node_modules/playwright/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmmirror.com/fsevents/-/fsevents-2.3.2.tgz",
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+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
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+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
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+    },
     "node_modules/plist": {
       "version": "3.1.0",
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