feat(round2+round3): 完整实现 A/B/C/D 主线 + round3-F/H 修复

Round2 主线:
- A: 事件落库地基 (RuntimeApp EventStore 单例 + 14 repo wiring)
- B: 执行体对齐 (read-before-edit, verification-before-completion)
- C: 界面对齐 (@opentui/solid, 删除 runtime 依赖)
- D: 经验闭环 (ExperienceMiner, DebuggerRole, CompactorRole)

Round2 补充修复:
- fail-on-missing 反作弊门禁
- projection-store-apply.test.ts 补写
- 3个空壳测试转行为 (evidence-store, recovery-impl, knowledge-store)
- ask 项目根支持 AIRCODING_PROJECT_ROOT
- Worker 事件契约修复 (task.attempt.started → checkpoint)

Round3-F: cpp 工具切换
- 删除 BuiltInToolRegistrar cpp.* 闭包
- 接入 toolchain-cpp 真实 CppToolRegistrar
- canonical envelope {status/output/metadata}
- ExecutorRole system prompt 对齐新工具名

Round3-H: Doctor 5 类报告
- toolchain (cmake/ninja/cppcheck/clangd/g++)
- display (X11/Wayland + ImageMagick)
- network (internet connectivity)
- provider (api_key/base_url/model/connectivity)

Secret 脱敏:
- 状态交接.md: sk- → \${OPENAI_API_KEY}
- .gitignore: 添加 .air/ .claude/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/tui/src/ProjectionClient.ts

@@ -1,53 +1,28 @@
 /**
- * ProjectionClient - Local TUI-side projection consumer
- * TUI copies minimal projection types from contracts to avoid INV-4 violation
- * (TUI must only depend on contracts; dd §13.2 / c4/code-view §2 rule 3).
- *
- * The runtime package provides the authoritative ProjectionClient in
- * `runtime/projection/ProjectionClient.ts`. TUI defines its own local copy
- * with the same surface so that subscriptions work in-process.
+ * ProjectionClient - Local TUI-side projection consumer.
+ * TUI keeps a contracts-only copy of the ProjectionClient surface so it never imports runtime.
  *
  * @module packages/tui/src/ProjectionClient
  */
 
-import type { SessionID, ProjectID, TaskID, AgentID, ISOTimeString } from '@aircoding/contracts'
+import type { ProjectionSubscriber, SessionProjection } from './types.js'
 
-export interface SessionProjection {
-  session_id: SessionID
-  project_id: ProjectID
-  status: string
-  title?: string
-  tasks: TaskProjection[]
-  agents: AgentProjection[]
-}
-
-export interface TaskProjection {
-  id: TaskID
-  type: string
-  status: string
-  title: string
-  retry_count: number
-  attempts: number
-  created_at: string
-}
-
-export interface AgentProjection {
-  id: AgentID
-  type: string
-  status: string
-  task_id?: TaskID
-  last_heartbeat?: string
-}
-
-export type ProjectionSubscriber = (projection: SessionProjection) => void
+export type {
+  SessionProjection,
+  TaskProjection,
+  AgentProjection,
+  ToolRunProjection,
+  CommandRunProjection,
+  ArtifactProjection,
+  PermissionPromptProjection,
+  BlockerProjection,
+  ProjectionSubscriber,
+} from './types.js'
 
 export class ProjectionClient {
   private snapshot: SessionProjection | null = null
   private subscribers: Set<ProjectionSubscriber> = new Set()
 
-  /**
-   * Receive and cache a projection snapshot.
-   */
   receive_snapshot(projection: SessionProjection): void {
     this.snapshot = projection
     for (const sub of this.subscribers) {
@@ -55,17 +30,11 @@ export class ProjectionClient {
     }
   }
 
-  /**
-   * Subscribe to projection updates.
-   */
   subscribe(subscriber: ProjectionSubscriber): () => void {
     this.subscribers.add(subscriber)
     return () => this.subscribers.delete(subscriber)
   }
 
-  /**
-   * Get current snapshot.
-   */
   get_snapshot(): SessionProjection | null {
     return this.snapshot
   }