refactor: 修复 any 滥用 & 拆分 tool-handlers.ts & 记忆数据治理 (v5.1.3)

Fix 2 - 类型安全:
- (window as any).metonaDesktop → window.metonaDesktop
- any[] → Record<string, unknown>[]
- 回调 :any → ChatSession | null
- 78 处 → 38 处（减少 51%）

Fix 3 - 架构拆分:
- tool-handlers.ts (1308行) → 4 个模块:
  - tool-handlers-shared.ts: 共享工具函数
  - tool-handlers-fs.ts: 15 个文件系统操作
  - tool-handlers-system.ts: 6 个系统网络操作
  - tool-handlers-git.ts: 1 个 Git 操作

Fix 4 - 记忆数据治理:
- 90 天未使用自动降低 importance
- 清理评分新增 agePenalty
- 向量错误日志增强（记忆ID、内容摘要、模型、栈）
- 去重增强（前缀匹配）

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "metona-ollama-desktop",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "metona-ollama-desktop",
-      "version": "5.1.2",
+      "version": "5.1.3",
       "license": "MIT",
       "dependencies": {
         "sql.js": "^1.11.0"
@@ -855,7 +855,7 @@
       "license": "MIT"
     },
     "node_modules/@isaacs/cliui/node_modules/string-width": {
-      "version": "5.1.2",
+      "version": "5.1.3",
       "resolved": "https://registry.npmmirror.com/string-width/-/string-width-5.1.2.tgz",
       "integrity": "sha512-HnLOCR3vjcY8beoNLtcjZ5/nxn2afmME6lhrDrebokqMap+XbeW8n9TXpPDOqdGK5qcI3oT0GKTW6wC7EMiVqA==",
       "dev": true,
@@ -1826,7 +1826,7 @@
       }
     },
     "node_modules/archiver-utils/node_modules/safe-buffer": {
-      "version": "5.1.2",
+      "version": "5.1.3",
       "resolved": "https://registry.npmmirror.com/safe-buffer/-/safe-buffer-5.1.2.tgz",
       "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
       "dev": true,
@@ -4251,7 +4251,7 @@
       }
     },
     "node_modules/lazystream/node_modules/safe-buffer": {
-      "version": "5.1.2",
+      "version": "5.1.3",
       "resolved": "https://registry.npmmirror.com/safe-buffer/-/safe-buffer-5.1.2.tgz",
       "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
       "dev": true,
@@ -4863,7 +4863,7 @@
       }
     },
     "node_modules/onetime": {
-      "version": "5.1.2",
+      "version": "5.1.3",
       "resolved": "https://registry.npmmirror.com/onetime/-/onetime-5.1.2.tgz",
       "integrity": "sha512-kbpaSSGJTWdAY5KPVeMOKXSrPtr8C8C7wodJbcsd51jRnmD+GZu8Y0VoU6Dm5Z4vWr0Ig/1NKuWRKf7j5aaYSg==",
       "dev": true,