fix: 主线 A 事件落库地基 + 主线 B1/B2 执行原语

主线 A（事件驱动落库）:
- 统一 EventStore 模块单例：RuntimeApp 不再 new EventStore，改用 eventStore
  并 setRepositories(14 个 domain repo),消除事件流向空 DB 的割裂
- Scheduler.create_tasks 改为 async,真正发出 task.created 事件
- run.ts dispatchTask 加 await
- 主线 A 独立复审发现并修复关键假绿：四个 repo（Task/Agent/ToolRun/
  TaskAttempt）的 *Update 类型 Omit<'status'> 且 update() 主动丢弃 status,
  导致 EventStore.project() 的状态写入全部静默失效,DB 行内容 tasks.status
  永远冻结在 pending,UI 显示的 completed 来自内存 graph。已修,DB 现
  真实反映 task.status=completed
- 补 agent.started/agent.completed/agent.failed 事件发出（之前 agents 表
  恒空),修复后 agents 表有正确行+status

主线 B1（结构化工具调用块类型,N1）:
- 新增 content-block.ts 定义 Anthropic canonical content blocks
  (TextBlock/ThinkingBlock/ToolUseBlock/ToolResultBlock/CanonicalMessage)
- provider.ts ProviderCompletionInput 去掉 unknown 逃生舱:
  messages: CanonicalMessage[], tools?: ToolDefinitionBlock[],
  tool_choice?: ToolChoice, system?: string | TextBlock[]

主线 B2（read-before-edit 代码层强制,FR-009）:
- fs/index.ts 新增 readFileState 机制(移植 claude-code FileEditTool),
  fs.edit 执行前检查:未读先改报 "File has not been read yet",外部修改
  报 "File has been unexpectedly modified"
- 修复 fs.edit 参数名不匹配:兼容 old_str/new_str (ExecutorRole) 和
  find/replace (UI) 两种命名
- fs_edit 唯一性检查(非 global 模式下 old_str 出现多次报错)

真实验收:
- TSC=0
- air run 后 DB:events=5(原 3,+agent.started/completed),
  tasks.status=completed(原 frozen pending),agents 1 行 status=completed
- read-before-edit 行为测试:未读先改 status=error,读后再改 status=ok

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

packages/runtime/src/scheduler/Scheduler.ts

@@ -62,7 +62,7 @@ export class Scheduler {
   /**
    * Create tasks from specifications.
    */
-  create_tasks(tasks: Array<{ id: TaskID; type: string; title: string; description?: string; depends_on?: string[] }>): void {
+  async create_tasks(tasks: Array<{ id: TaskID; type: string; title: string; description?: string; depends_on?: string[] }>): Promise<void> {
     for (const task of tasks) {
       this.graph.add_task({
         id: task.id,
@@ -71,9 +71,28 @@ export class Scheduler {
         description: task.description,
         dependencies: task.depends_on?.map(d => ({ task_id: d, type: 'hard' as const })) || []
       })
+
+      // Emit task.created events (INV-1: via event store for projection)
+      await eventIngestor.ingest({
+        id: `evt_${task.id}_created`,
+        type: 'task.created',
+        version: 1,
+        session_id: this.context.session_id,
+        project_id: this.context.project_id,
+        timestamp: new Date().toISOString(),
+        source: { kind: 'scheduler' },
+        route: ['scheduler', 'create'],
+        payload: {
+          task_id: task.id,
+          type: task.type,
+          title: task.title,
+          task_spec_json: { description: task.description || '' },
+          dependencies: (task.depends_on || []).map(d => ({ depends_on_task_id: d, dependency_type: 'hard', reason: '' })),
+          metadata: {},
+        }
+      })
     }
 
-    // Emit task.created events (INV-1: via projection, not direct status write)
     this.state = 'PLANNING_WAVE'
   }
 
@@ -175,6 +194,28 @@ export class Scheduler {
               })
               this.graph.update_status(task.id, 'running')
               this.agent_monitor.record_heartbeat(agent_id, task.id)
+
+              // INV-1: Emit agent.started event (durable) for projection
+              await eventIngestor.ingest({
+                id: `evt_${agent_id}_started`,
+                type: 'agent.started',
+                version: 1,
+                session_id: this.context.session_id,
+                project_id: this.context.project_id,
+                timestamp: new Date().toISOString(),
+                source: { kind: 'scheduler' },
+                route: ['scheduler', 'dispatch'],
+                payload: {
+                  agent_id,
+                  agent_type: task.type || 'executor',
+                  task_id: task.id,
+                  pid: 0,
+                  model_provider_id: '',
+                  model_id: '',
+                  workspace_id: `ws_${task.id}`,
+                  metadata: {},
+                }
+              })
             } catch {
               // INV-1: emit task.failed event for projection
               await eventIngestor.ingest({
@@ -278,6 +319,18 @@ export class Scheduler {
                 }
               })
               this.graph.update_status(task.id, 'completed')
+              // INV-1: Emit agent.completed event (durable) for projection
+              await eventIngestor.ingest({
+                id: `evt_${handle.worker_id}_completed`,
+                type: 'agent.completed',
+                version: 1,
+                session_id: this.context.session_id,
+                project_id: this.context.project_id,
+                timestamp: new Date().toISOString(),
+                source: { kind: 'scheduler' },
+                route: ['scheduler', 'monitoring'],
+                payload: { agent_id: handle.worker_id, task_id: task.id, summary: result.summary, worker_result_ref: attempt_id, metadata: {} }
+              })
               this.agent_monitor.remove(handle.worker_id)
             } else if (result.status === 'blocked') {
               await eventIngestor.ingest({
@@ -320,6 +373,18 @@ export class Scheduler {
                 payload: { task_id: task.id, agent_id: handle.worker_id, attempt_id, error: { message: result.summary }, evidence_refs: result.evidence_refs, metadata: { worker_status: result.status } }
               })
               this.graph.update_status(task.id, 'failed')
+              // INV-1: Emit agent.failed event (durable) for projection
+              await eventIngestor.ingest({
+                id: `evt_${handle.worker_id}_failed`,
+                type: 'agent.failed',
+                version: 1,
+                session_id: this.context.session_id,
+                project_id: this.context.project_id,
+                timestamp: new Date().toISOString(),
+                source: { kind: 'scheduler' },
+                route: ['scheduler', 'monitoring'],
+                payload: { agent_id: handle.worker_id, task_id: task.id, error: { message: result.summary }, evidence_refs: result.evidence_refs || [], metadata: {} }
+              })
               this.agent_monitor.remove(handle.worker_id)
             }
           }