feat: 0.9.3 单文件视图文本搜索与稳健性收尾 - 工具栏搜索框（Ctrl+F聚焦/大小写不敏感即时命中计数/Enter与Shift+Enter命中行循环跳转复用activeRowId受控定位/行内命中子串高亮含词级segs行/Esc清空；基于全量行与仅看差异独立、折叠命中行跳转toast提示不推进）、扫描缓存落盘promise链串行化（并发读改写不再覆盖丢LRU目录对）、快照对照变迁过滤计数归零自动复位、重新选择扫描中保持可用固化测试（与返回文件对比同类发起新会话作废在途扫描）、依赖patch级升级，新增21单测用例与E2E搜索链路用例（564单测+E2E 24全过，覆盖率98.27/93.47/94.01/98.27），文档四件套同步

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "DiffLens",
-  "version": "0.9.1",
+  "version": "0.9.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "DiffLens",
-      "version": "0.9.1",
+      "version": "0.9.3",
       "license": "MIT",
       "dependencies": {
         "@electron-toolkit/preload": "^3.0.1",
@@ -4460,9 +4460,9 @@
       }
     },
     "node_modules/electron-to-chromium": {
-      "version": "1.5.410",
-      "resolved": "https://registry.npmmirror.com/electron-to-chromium/-/electron-to-chromium-1.5.410.tgz",
-      "integrity": "sha512-Vq9DD7F4PKCKVmOoG6i1CQSYoF7IUtwTPEQjMXuqNs2S22H8HsojO9myaB81QuvvIKZaF6imSn3XAV1Su6rvXA==",
+      "version": "1.5.411",
+      "resolved": "https://registry.npmmirror.com/electron-to-chromium/-/electron-to-chromium-1.5.411.tgz",
+      "integrity": "sha512-gglkxzokjHfawpGxq75XdBV2/l3BAPzrsMs70qgaZdTW5rpV1tC4MdgJVP9fN126bODA4ZJQkn1wryEzJyQXIg==",
       "dev": true,
       "license": "ISC"
     },