✨ feat(vscode): PyCharm 启动命令可配置（支持 ~/绝对路径），抽 expandTilde 复用

GUI 启动的 VS Code 扩展进程 PATH 常不含 JetBrains 启动器，裸 pycharm 易 ENOENT。
新增设置 pycharmCommand（默认 pycharm），贯穿 store/settings handler/messages/
KanbanPanel 与 webview，「钩子」分组在选 PyCharm 时显示「PyCharm 启动命令」输入框。
handleOpenWorktree 用该命令并经 expandTilde 展开 ~。expandTilde 从 resolveWorktreePath
抽出共用。

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

vscode/src/panel/handlers/settings.ts

@@ -27,6 +27,7 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
   autoBuildBranch: string
   worktreeDirectory: string
   worktreeOpenWith: 'vscode' | 'pycharm'
+  pycharmCommand: string
   worktreePostCreateScript: string
   worktreePreRemoveScript: string
   implTabPreCreateScript: string
@@ -48,6 +49,9 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
   // worktree dir template: '' = "use default", so don't preserve blanks
   // specially — getSettings falls back to the default at read time.
   const trimmedWorktreeDir = payload.worktreeDirectory.trim()
+  // pycharm launcher command: '' = "use default `pycharm`", getSettings falls
+  // back at read time, so just strip whitespace here.
+  const trimmedPycharmCmd = payload.pycharmCommand.trim()
   // Hook script paths: keep '' meaningful (= "use default
   // .spx/*.sh"). Just strip whitespace.
   const trimmedPostCreate = payload.worktreePostCreateScript.trim()
@@ -78,6 +82,7 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
       autoBuildBranch: trimmedAutoBuildBranch,
       worktreeDirectory: trimmedWorktreeDir || prev.worktreeDirectory,
       worktreeOpenWith: payload.worktreeOpenWith || prev.worktreeOpenWith,
+      pycharmCommand: trimmedPycharmCmd || prev.pycharmCommand,
       worktreePostCreateScript: trimmedPostCreate,
       worktreePreRemoveScript: trimmedPreRemove,
       implTabPreCreateScript: trimmedImplPre,
@@ -98,6 +103,7 @@ export async function handleSettingsSave(panel: KanbanWebviewPanel, payload: {
     autoBuildBranch: trimmedAutoBuildBranch,
     worktreeDirectory: trimmedWorktreeDir,
     worktreeOpenWith: payload.worktreeOpenWith,
+    pycharmCommand: trimmedPycharmCmd,
     worktreePostCreateScript: trimmedPostCreate,
     worktreePreRemoveScript: trimmedPreRemove,
     implTabPreCreateScript: trimmedImplPre,
@@ -179,6 +185,7 @@ export async function handleEditSettingsRequest(panel: KanbanWebviewPanel): Prom
     autoBuildBranch: s.autoBuildBranch,
     worktreeDirectory: s.worktreeDirectory,
     worktreeOpenWith: s.worktreeOpenWith,
+    pycharmCommand: s.pycharmCommand,
     worktreePostCreateScript: s.worktreePostCreateScript,
     worktreePreRemoveScript: s.worktreePreRemoveScript,
     implTabPreCreateScript: s.implTabPreCreateScript,