✨ feat(vscode): 新增第五种工单会话「原型会话」

照测试会话那条链路补一份 prototype：

- 消息与路由：session/start-prototype、session/resume-prototype、
  issue/update-prototype-profile-path，都进只读门禁
- 会话：handleStartPrototypeSession / handleResumePrototypeSession，
  终端名 issue-N-原型；cwd 有 worktree 用 worktree、没有退主仓库根
  （原 resolveTestSessionCwd 改名 resolveWorktreeOrRootCwd 两种会话共用）
- 不要求有 PR，任何阶段都能起；前置工单锁仍然拦
- 提示词：新增 prompts/prototype.md，设置里可改，占位符 {issueNumber}
- profile：工单级 prototypeProfilePath > 设置里的原型默认 profile >
  内置默认，与其它会话互不回退
- 状态字段 prototypeSessionId / prototypeProfilePath / prototypeTabOpen
  贯通 gitea、youtrack、本机 state 与移交包
- 详情面板加「原型会话id」「原型配置文件」两行，设置面板加对应两项

Claude-Session: https://claude.ai/code/session_01Kgmb1LvrPmFX3NoUDB4zZC

vscode/webview-ui/src/hooks/useIssues.ts

@@ -44,6 +44,7 @@ export interface SettingsValues {
   autoReview: boolean
   reviewPrompt: string
   testPrompt: string
+  prototypePrompt: string
   devBranch: string
   releaseBranchPrefix: string
   jenkinsJob: string
@@ -59,6 +60,7 @@ export interface SettingsValues {
   defaultBrainstormProfilePath: string
   defaultImplementProfilePath: string
   defaultTestProfilePath: string
+  defaultPrototypeProfilePath: string
   conflictResolutionProfilePath: string
   commitProfilePath: string
   prDiffSummaryProfilePath: string
@@ -84,6 +86,7 @@ export interface SettingsOverlayState {
   autoReview: boolean
   reviewPrompt: string
   testPrompt: string
+  prototypePrompt: string
   devBranch: string
   releaseBranchPrefix: string
   jenkinsJob: string
@@ -99,6 +102,7 @@ export interface SettingsOverlayState {
   defaultBrainstormProfilePath: string
   defaultImplementProfilePath: string
   defaultTestProfilePath: string
+  defaultPrototypeProfilePath: string
   conflictResolutionProfilePath: string
   commitProfilePath: string
   prDiffSummaryProfilePath: string
@@ -192,6 +196,8 @@ export interface UseIssuesResult {
   startReviewSession: (issueNumber: number) => void
   startTestSession: (issueNumber: number) => void
   resumeTestSession: (sessionId: string, issueNumber: number, cwd?: string) => void
+  startPrototypeSession: (issueNumber: number) => void
+  resumePrototypeSession: (sessionId: string, issueNumber: number, cwd?: string) => void
   focusSession: (issueNumber: number) => void
   openFile: (path: string) => void
   implement: (issueNumber: number, planFile: string, profilePath?: string, sessionId?: string) => void
@@ -213,7 +219,7 @@ export interface UseIssuesResult {
    * Dispose the matching session terminal tab. Extension reacts via
    * onDidCloseTerminal and clears `*TabOpen` so the X button disappears.
    */
-  closeSessionTab: (issueNumber: number, kind: 'brainstorm' | 'implement' | 'review' | 'test') => void
+  closeSessionTab: (issueNumber: number, kind: 'brainstorm' | 'implement' | 'review' | 'test' | 'prototype') => void
   /**
    * Spawn a fresh "规划" cc tab for an existing issue whose sessionId is
    * still empty. Extension 用工单级 brainstormProfilePath（空 = 默认），
@@ -242,6 +248,11 @@ export interface UseIssuesResult {
    * postMessage 持久化到 state JSON。失败时扩展端 push `issue/patch` 回滚。
    */
   updateIssueTestProfilePath: (issueNumber: number, testProfilePath: string) => void
+  /**
+   * 覆盖该工单原型会话专用的 Claude 配置文件，乐观更新本地 state 后
+   * postMessage 持久化到 state JSON。失败时扩展端 push `issue/patch` 回滚。
+   */
+  updateIssuePrototypeProfilePath: (issueNumber: number, prototypeProfilePath: string) => void
   logs: LogEntry[]
   fetchLogs: () => void
   clearLogs: () => void
@@ -424,6 +435,7 @@ export function useIssues(): UseIssuesResult {
       autoReview: values.autoReview,
       reviewPrompt: values.reviewPrompt,
       testPrompt: values.testPrompt,
+      prototypePrompt: values.prototypePrompt,
       devBranch: values.devBranch,
       releaseBranchPrefix: values.releaseBranchPrefix,
       jenkinsJob: values.jenkinsJob,
@@ -439,6 +451,7 @@ export function useIssues(): UseIssuesResult {
       defaultBrainstormProfilePath: values.defaultBrainstormProfilePath,
       defaultImplementProfilePath: values.defaultImplementProfilePath,
       defaultTestProfilePath: values.defaultTestProfilePath,
+      defaultPrototypeProfilePath: values.defaultPrototypeProfilePath,
       conflictResolutionProfilePath: values.conflictResolutionProfilePath,
       commitProfilePath: values.commitProfilePath,
       prDiffSummaryProfilePath: values.prDiffSummaryProfilePath,
@@ -562,6 +575,15 @@ export function useIssues(): UseIssuesResult {
     postMessage({ type: 'session/resume-test', sessionId, issueNumber, cwd })
   }, [markSessionTabPending])
 
+  const startPrototypeSession = useCallback((issueNumber: number): void => {
+    postMessage({ type: 'session/start-prototype', issueNumber })
+  }, [])
+
+  const resumePrototypeSession = useCallback((sessionId: string, issueNumber: number, cwd?: string): void => {
+    markSessionTabPending(sessionId)
+    postMessage({ type: 'session/resume-prototype', sessionId, issueNumber, cwd })
+  }, [markSessionTabPending])
+
   const openFile = useCallback((path: string): void => {
     postMessage({ type: 'editor/open-file', path })
   }, [])
@@ -641,7 +663,7 @@ export function useIssues(): UseIssuesResult {
   }, [])
 
   const closeSessionTab = useCallback(
-    (issueNumber: number, kind: 'brainstorm' | 'implement' | 'review' | 'test'): void => {
+    (issueNumber: number, kind: 'brainstorm' | 'implement' | 'review' | 'test' | 'prototype'): void => {
       postMessage({ type: 'session/close-tab', issueNumber, kind })
     },
     [],
@@ -734,6 +756,20 @@ export function useIssues(): UseIssuesResult {
     postMessage({ type: 'issue/update-test-profile-path', issueNumber, testProfilePath })
   }, [])
 
+  const updateIssuePrototypeProfilePath = useCallback((issueNumber: number, prototypeProfilePath: string): void => {
+    setState((prev) => {
+      if (prev.status !== 'ready')
+        return prev
+      return {
+        status: 'ready',
+        issues: prev.issues.map(i =>
+          i.number === issueNumber ? { ...i, prototypeProfilePath } : i,
+        ),
+      }
+    })
+    postMessage({ type: 'issue/update-prototype-profile-path', issueNumber, prototypeProfilePath })
+  }, [])
+
   const fetchLogs = useCallback((): void => {
     postMessage({ type: 'logs/fetch' })
   }, [])
@@ -890,6 +926,7 @@ export function useIssues(): UseIssuesResult {
             autoReview: msg.autoReview,
             reviewPrompt: msg.reviewPrompt,
             testPrompt: msg.testPrompt,
+            prototypePrompt: msg.prototypePrompt,
             devBranch: msg.devBranch,
             releaseBranchPrefix: msg.releaseBranchPrefix,
             jenkinsJob: msg.jenkinsJob,
@@ -905,6 +942,7 @@ export function useIssues(): UseIssuesResult {
             defaultBrainstormProfilePath: msg.defaultBrainstormProfilePath,
             defaultImplementProfilePath: msg.defaultImplementProfilePath,
             defaultTestProfilePath: msg.defaultTestProfilePath,
+            defaultPrototypeProfilePath: msg.defaultPrototypeProfilePath,
             conflictResolutionProfilePath: msg.conflictResolutionProfilePath,
             commitProfilePath: msg.commitProfilePath,
             prDiffSummaryProfilePath: msg.prDiffSummaryProfilePath,
@@ -999,5 +1037,5 @@ export function useIssues(): UseIssuesResult {
     return cleanup
   }, [clearPrDiffSummaryRunning, markHandoffRunning])
 
-  return { state, settings, avatars, isSessionTabPending, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, refreshing, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startReviewSession, startTestSession, resumeTestSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, continueBrainstorm, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, clearBrainstormSession, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, release, runRelease, cherryPick, dismissCherryPick, confirmCherryPick, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
+  return { state, settings, avatars, isSessionTabPending, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, refreshing, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startReviewSession, startTestSession, resumeTestSession, startPrototypeSession, resumePrototypeSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, continueBrainstorm, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, clearBrainstormSession, updateIssueTestProfilePath, updateIssuePrototypeProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, release, runRelease, cherryPick, dismissCherryPick, confirmCherryPick, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
 }