新增: 知识图谱Phase2事件流(父⑥) — project_events统一事件流+埋点+timeline

父⑥ Phase 2(对标设计 §2.4):
- V30 迁移:project_events 追加型审计表(id/project_id/event_type/entity_type/entity_id/from_state/to_state/context_json/source/conversation_id/created_at)+ 双索引(project,time / entity)
- ProjectEventRecord + ProjectEventRepo(insert 追加型/get_by_project/get_by_entity/list_recent)
- 事件埋点(best-effort,hook/after,失败 warn 不阻断主操作):
  - task.rs emit_event 辅助 + create_task/advance_task/move_task_queue 埋点
  - idea.rs promote_idea 埋点(idea_promoted,project_id=新项目)
  - project.rs create/delete 埋点
  - 注:idea_created 暂不埋点(idea 无 project_id,待 Inbox 项目落地,NOT NULL+FK 约束)
- get_project_timeline IPC(events 模块)+ lib.rs 注册 + AI 工具(基线 +N)
- source 语义:IPC 标 human,AI 工具路径标 ai

注:workflow 脚本中文变量名 const 致验证 agent 未跑,主控独立 cargo check EXIT 0 + grep 落地齐全核验。

src-tauri/src/state.rs

@@ -12,8 +12,8 @@ use tokio::sync::{Mutex, RwLock, Semaphore};
 use df_ai::ai_tools::AiToolRegistry;
 use df_storage::crud::{
     AiConversationRepo, AiMessageRepo, AiProviderRepo, AiToolExecutionRepo, IdeaEvalRepo, IdeaRepo,
-    KnowledgeEventsRepo, KnowledgeRepo, NodeExecutionRepo, ProjectRepo, ReleaseRepo,
-    SettingsRepo, TaskLinkRepo, TaskRepo, WorkflowRepo,
+    KnowledgeEventsRepo, KnowledgeRepo, NodeExecutionRepo, ProjectEventRepo, ProjectRepo,
+    ReleaseRepo, SettingsRepo, TaskLinkRepo, TaskRepo, WorkflowRepo,
 };
 use df_storage::db::Database;
 use df_workflow::eventbus::EventBus;
@@ -339,6 +339,9 @@ pub struct AppState {
     pub tasks: TaskRepo,
     /// 任务横向关联表 Repo(知识图谱 Phase 1 V29,AI 拓扑排序编排调度的基础)
     pub task_links: TaskLinkRepo,
+    /// 项目统一事件流表 Repo(知识图谱 Phase 2 V30,project_events 追加型审计表)。
+    /// 埋点 best-effort:事件写入失败不阻断主操作(设计 §10.1),commands 层 hook/after 追加。
+    pub project_events: ProjectEventRepo,
     /// 发布表 Repo（预留:ReleaseRepo 持久化已就位·IPC/逻辑未接入·SW-260618-21 b 保留）
     #[allow(dead_code)]
     pub releases: ReleaseRepo,
@@ -665,6 +668,7 @@ impl AppState {
             projects: ProjectRepo::new(&db),
             tasks: TaskRepo::new(&db),
             task_links: TaskLinkRepo::new(&db),
+            project_events: ProjectEventRepo::new(&db),
             releases: ReleaseRepo::new(&db),
             workflows: WorkflowRepo::new(&db),
             node_executions: NodeExecutionRepo::new(&db),