feat: 优化进度条体验和修复一键全选功能

- 进度条改用检查点驱动模拟真实流式传输进度 (5→15→25→35→45→60→75→85→92→100)
- 每个检查点间使用 ease-out 缓动平滑过渡
- 完成时从当前进度平滑动画到 100%
- 修复一键全选按钮事件绑定问题
- 添加调试日志帮助诊断问题
- 修复 addSystemMessage 使用不存在容器的问题

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "memory-manager-concurrent",
-  "version": "0.4.2",
+  "version": "0.4.7",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "memory-manager-concurrent",
-      "version": "0.4.2",
+      "version": "0.4.7",
       "license": "AGPL-3.0",
       "devDependencies": {
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@@ -351,6 +351,7 @@
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -377,6 +378,7 @@
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.3",
         "fast-uri": "^3.0.1",
@@ -449,6 +451,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
@@ -1370,6 +1373,7 @@
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/eslint-scope": "^3.7.7",
         "@types/estree": "^1.0.8",
@@ -1419,6 +1423,7 @@
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       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@discoveryjs/json-ext": "^0.5.0",
         "@webpack-cli/configtest": "^2.1.1",