✨ feat(vscode): worktree 打开方式可选 VS Code/PyCharm，并修复 handleOpenWorktree 不展开 ~ 的打开报错

- worktree.ts: handleOpenWorktree/handleDeleteWorktree/dispatchImplTabPostCloseAsync 三处改用 resolveWorktreePath，修复带 ~ 的存量路径被拼成 <工作区>/~/... 导致打不开
- 新增全局设置 worktreeOpenWith（'vscode' | 'pycharm'，默认 vscode），贯穿 store/settings handler/messages/KanbanPanel 与 webview 的 messages/useIssues/App/SettingsModal「钩子」分组新增「工作树打开方式」下拉
- handleOpenWorktree 按设置分支：pycharm 走 JetBrains pycharm 启动器，ENOENT 时提示启用命令行启动器

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vscode/src/panel/handlers/settings.ts

@@ -26,6 +26,7 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
   devBranch: string
   autoBuildBranch: string
   worktreeDirectory: string
+  worktreeOpenWith: 'vscode' | 'pycharm'
   worktreePostCreateScript: string
   worktreePreRemoveScript: string
   implTabPreCreateScript: string
@@ -76,6 +77,7 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
       devBranch: trimmedDevBranch || prev.devBranch,
       autoBuildBranch: trimmedAutoBuildBranch,
       worktreeDirectory: trimmedWorktreeDir || prev.worktreeDirectory,
+      worktreeOpenWith: payload.worktreeOpenWith || prev.worktreeOpenWith,
       worktreePostCreateScript: trimmedPostCreate,
       worktreePreRemoveScript: trimmedPreRemove,
       implTabPreCreateScript: trimmedImplPre,
@@ -95,6 +97,7 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
     devBranch: trimmedDevBranch,
     autoBuildBranch: trimmedAutoBuildBranch,
     worktreeDirectory: trimmedWorktreeDir,
+    worktreeOpenWith: payload.worktreeOpenWith,
     worktreePostCreateScript: trimmedPostCreate,
     worktreePreRemoveScript: trimmedPreRemove,
     implTabPreCreateScript: trimmedImplPre,
@@ -175,6 +178,7 @@ export async function handleEditSettingsRequest(panel: KanbanWebviewPanel): Prom
     devBranch: s.devBranch,
     autoBuildBranch: s.autoBuildBranch,
     worktreeDirectory: s.worktreeDirectory,
+    worktreeOpenWith: s.worktreeOpenWith,
     worktreePostCreateScript: s.worktreePostCreateScript,
     worktreePreRemoveScript: s.worktreePreRemoveScript,
     implTabPreCreateScript: s.implTabPreCreateScript,