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/cli/test/run-command-regression.test.ts

@@ -1,6 +1,9 @@
-import { describe, it, expect } from 'bun:test'
+import { describe, it, expect, afterEach } from 'bun:test'
+import { mkdtempSync, rmSync } from 'fs'
+import { tmpdir } from 'os'
 import { readFileSync } from 'fs'
 import { join } from 'path'
+import { loadConfig } from '../src/bootstrap/loadConfig.js'
 
 describe('run command result presentation', () => {
   const source = readFileSync(join(import.meta.dir, '../src/commands/run.ts'), 'utf-8')
@@ -22,3 +25,44 @@ describe('run command result presentation', () => {
     expect(source).toContain('No task was created')
   })
 })
+
+describe('ask command architecture boundary', () => {
+  const source = readFileSync(join(import.meta.dir, '../src/commands/ask.ts'), 'utf-8')
+
+  it('dispatches delegate work through Scheduler and WorkerManager', () => {
+    expect(source).toContain('app.scheduler.create_tasks')
+    expect(source).toContain('app.scheduler.run_until_idle')
+    expect(source).toContain('app.worker_manager.get_result_for_task')
+  })
+
+  it('does not implement an inline LLM-to-tool loop', () => {
+    expect(source).not.toContain('parseToolCalls')
+    expect(source).not.toContain('toolRegistry.call')
+    expect(source).not.toContain('while (turn <')
+  })
+})
+
+describe('project root configuration', () => {
+  const created: string[] = []
+  afterEach(() => {
+    delete process.env.AIRCODING_PROJECT_ROOT
+    for (const dir of created.splice(0)) rmSync(dir, { recursive: true, force: true })
+  })
+
+  it('uses AIRCODING_PROJECT_ROOT when no explicit project path is passed', () => {
+    const projectRoot = mkdtempSync(join(tmpdir(), 'air-load-config-'))
+    created.push(projectRoot)
+    process.env.AIRCODING_PROJECT_ROOT = projectRoot
+
+    expect(loadConfig().project_root).toBe(projectRoot)
+  })
+
+  it('explicit project path wins over AIRCODING_PROJECT_ROOT', () => {
+    const envRoot = mkdtempSync(join(tmpdir(), 'air-load-config-env-'))
+    const explicitRoot = mkdtempSync(join(tmpdir(), 'air-load-config-explicit-'))
+    created.push(envRoot, explicitRoot)
+    process.env.AIRCODING_PROJECT_ROOT = envRoot
+
+    expect(loadConfig(explicitRoot).project_root).toBe(explicitRoot)
+  })
+})