✨ 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/webview-ui/src/hooks/useIssues.ts

@@ -34,6 +34,7 @@ export interface SettingsValues {
   devBranch: string
   autoBuildBranch: string
   worktreeDirectory: string
+  worktreeOpenWith: 'vscode' | 'pycharm'
   worktreePostCreateScript: string
   worktreePreRemoveScript: string
   implTabPreCreateScript: string
@@ -57,6 +58,7 @@ export interface SettingsOverlayState {
   devBranch: string
   autoBuildBranch: string
   worktreeDirectory: string
+  worktreeOpenWith: 'vscode' | 'pycharm'
   worktreePostCreateScript: string
   worktreePreRemoveScript: string
   implTabPreCreateScript: string
@@ -268,6 +270,7 @@ export function useIssues(): UseIssuesResult {
       devBranch: values.devBranch,
       autoBuildBranch: values.autoBuildBranch,
       worktreeDirectory: values.worktreeDirectory,
+      worktreeOpenWith: values.worktreeOpenWith,
       worktreePostCreateScript: values.worktreePostCreateScript,
       worktreePreRemoveScript: values.worktreePreRemoveScript,
       implTabPreCreateScript: values.implTabPreCreateScript,
@@ -594,6 +597,7 @@ export function useIssues(): UseIssuesResult {
             devBranch: msg.devBranch,
             autoBuildBranch: msg.autoBuildBranch,
             worktreeDirectory: msg.worktreeDirectory,
+            worktreeOpenWith: msg.worktreeOpenWith,
             worktreePostCreateScript: msg.worktreePostCreateScript,
             worktreePreRemoveScript: msg.worktreePreRemoveScript,
             implTabPreCreateScript: msg.implTabPreCreateScript,