✨ 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/src/panel/KanbanPanel.ts

@@ -7,6 +7,7 @@ import type {
 import type { HookContext } from '../git/worktreeHooks'
 import type { Issue } from '../gitea/types'
 import type { IssueRef } from '../issues/stateRouter'
+import type { SessionTabKind } from './handlers/terminals'
 import type { IssueOwnershipFacts } from './issueOwnership'
 import type { KanbanScope } from './kanbanScope'
 import type { ExtensionToWebview, WebviewToExtension } from './messages'
@@ -164,7 +165,7 @@ export class KanbanWebviewPanel {
    * Map 更易于 inspect / debug。条目数顶天就是当前活跃 tab 数，无压力。
    */
   // internal: handler 模块访问
-  readonly terminalOrigin = new Map<Terminal, { issueNumber: number, kind: 'brainstorm' | 'implement' | 'review' | 'test' }>()
+  readonly terminalOrigin = new Map<Terminal, { issueNumber: number, kind: SessionTabKind }>()
 
   /**
    * 防 handleResumeSession/handleResumeReviewSession 在 await 钩子/终端创建期间被重入触发，
@@ -296,7 +297,7 @@ export class KanbanWebviewPanel {
         const origin = this.terminalOrigin.get(closed)
         // 反查 terminalOrigin 给详情面板推 *TabOpen: false，让关闭按钮消失。
         this.untrackClosedTerminal(closed)
-        if (origin?.kind === 'implement' || origin?.kind === 'test')
+        if (origin?.kind === 'implement' || origin?.kind === 'test' || origin?.kind === 'prototype')
           void this.dispatchImplTabPostCloseAsync(origin.issueNumber)
         // 冲突解决会话不进 terminalOrigin，按终端名触发 post-close 钩子。
         const conflictMatch = closed.name.match(/^issue-(\d+)-冲突解决/)
@@ -451,6 +452,14 @@ export class KanbanWebviewPanel {
       void sessions.handleResumeTestSession(this, msg.sessionId, msg.issueNumber, msg.cwd)
       return
     }
+    if (msg.type === 'session/start-prototype') {
+      void sessions.handleStartPrototypeSession(this, msg.issueNumber)
+      return
+    }
+    if (msg.type === 'session/resume-prototype') {
+      void sessions.handleResumePrototypeSession(this, msg.sessionId, msg.issueNumber, msg.cwd)
+      return
+    }
     if (msg.type === 'editor/open-file') {
       void issues.handleOpenFile(this, msg.path)
       return
@@ -550,6 +559,10 @@ export class KanbanWebviewPanel {
       void issues.handleUpdateTestProfilePath(this, msg.issueNumber, msg.testProfilePath)
       return
     }
+    if (msg.type === 'issue/update-prototype-profile-path') {
+      void issues.handleUpdatePrototypeProfilePath(this, msg.issueNumber, msg.prototypeProfilePath)
+      return
+    }
     if (msg.type === 'logs/fetch') {
       this.postMessage({ type: 'logs/snapshot', entries: logger.snapshot() })
       return
@@ -989,6 +1002,7 @@ export class KanbanWebviewPanel {
         autoReview: s.autoReview,
         reviewPrompt: s.reviewPrompt,
         testPrompt: s.testPrompt,
+        prototypePrompt: s.prototypePrompt,
         devBranch: s.devBranch,
         releaseBranchPrefix: s.releaseBranchPrefix,
         jenkinsJob: s.jenkinsJob,
@@ -1004,6 +1018,7 @@ export class KanbanWebviewPanel {
         defaultBrainstormProfilePath: s.defaultBrainstormProfilePath,
         defaultImplementProfilePath: s.defaultImplementProfilePath,
         defaultTestProfilePath: s.defaultTestProfilePath,
+        defaultPrototypeProfilePath: s.defaultPrototypeProfilePath,
         conflictResolutionProfilePath: s.conflictResolutionProfilePath,
         commitProfilePath: await getEffectiveCommitProfilePath(this.context),
         prDiffSummaryProfilePath: await getEffectivePrDiffSummaryProfilePath(this.context),
@@ -1078,6 +1093,7 @@ export class KanbanWebviewPanel {
           autoReview: s.autoReview,
           reviewPrompt: s.reviewPrompt,
           testPrompt: s.testPrompt,
+          prototypePrompt: s.prototypePrompt,
           devBranch: s.devBranch,
           releaseBranchPrefix: s.releaseBranchPrefix,
           jenkinsJob: s.jenkinsJob,
@@ -1093,6 +1109,7 @@ export class KanbanWebviewPanel {
           defaultBrainstormProfilePath: s.defaultBrainstormProfilePath,
           defaultImplementProfilePath: s.defaultImplementProfilePath,
           defaultTestProfilePath: s.defaultTestProfilePath,
+          defaultPrototypeProfilePath: s.defaultPrototypeProfilePath,
           conflictResolutionProfilePath: s.conflictResolutionProfilePath,
           commitProfilePath: await getEffectiveCommitProfilePath(this.context),
           prDiffSummaryProfilePath: await getEffectivePrDiffSummaryProfilePath(this.context),
@@ -1202,7 +1219,7 @@ export class KanbanWebviewPanel {
   trackSessionTerminal(
     terminal: Terminal,
     issueNumber: number,
-    kind: 'brainstorm' | 'implement' | 'review' | 'test',
+    kind: SessionTabKind,
   ): void {
     terminals.trackSessionTerminal(this, terminal, issueNumber, kind)
   }