重构: 后端编排拆解与DRY债收敛及命名纠偏

阶段1拆解: stream 系外移 stream_relay.rs,mod.rs 3048→2607,loop_body 502→83
技能收尾: regenerate/edit 回溯补技能,新增 read_skill 工具,项目级技能扫描
DRY: emit 双写 46 处收敛 event_bus 正典,KV 引号归一收口,LOCK-SLOW 33 处单行化
警示骨架 4→1 与压缩兜底 2→1,噪音目录档位收敛,truncate 同名陷阱消除
工具元数据落 ToolMeta 八维,7 张 match 表改查 registry,parity 测试锁等价
命名: is_noise_entry/teardown_round/probe_missed_terminal_event 等 6 项纠偏

src-tauri/src/commands/ai/tools/task.rs

@@ -16,7 +16,7 @@
 
 use std::sync::Arc;
 
-use df_ai::ai_tools::{object_schema, AiToolRegistry, RiskLevel};
+use df_ai::ai_tools::{object_schema, AiToolRegistry, RiskLevel, ToolMeta};
 use df_ai::declare_tool;
 use df_storage::db::Database;
 use df_storage::models::TaskRecord;
@@ -67,6 +67,12 @@ pub fn register(registry: &mut AiToolRegistry, db: &Arc<Database>) {
         "create_task",
         "在指定项目下创建新任务，可选传 idea_id 关联灵感(1对1 单向)。知识图谱 Phase 1 扩展三个可选参数:queue(管理维度池 backlog/todo/decision,默认 todo,新建不可直接落 active/done 须经 move_task_queue 流转)、parent_id(父任务 ID,限 1 级嵌套,父任务自身不能有 parent_id,IPC 层校验防孙任务)、content_json(结构化需求规格 JSON 字符串 {background,acceptance_criteria[],scope[],technical_design},须合法 JSON)",
         RiskLevel::Medium,
+        meta: ToolMeta {
+            entity_action: Some(("task", "create")),
+            approval_hint: Some(("创建任务：{}（项目{}）", &["title", "project_id"])),
+            display_verb: Some("创建任务"),
+            ..Default::default()
+        },
         schema: object_schema(vec![
             ("project_id", "string", true), ("title", "string", true),
             ("description", "string", false), ("priority", "integer", false),
@@ -129,6 +135,11 @@ pub fn register(registry: &mut AiToolRegistry, db: &Arc<Database>) {
         "update_task",
         "更新任务的指定字段（title/description/priority/assignee 等），需要提供任务 ID、字段名和新值。注意：status 改动须走 advance_task 工具（状态机推进，8 态 todo/in_progress/in_review/testing/blocked/done/cancelled/deferred，按 target_status 推进不可跳跃），本工具不接受 status 字段（防绕过状态机）",
         RiskLevel::Medium,
+        meta: ToolMeta {
+            entity_action: Some(("task", "update")),
+            display_verb: Some("修改任务"),
+            ..Default::default()
+        },
         schema: object_schema(vec![("id", "string", true), ("field", "string", true), ("value", "string", true)]),
         args => {
             let id = args["id"].as_str().ok_or_else(|| anyhow::anyhow!("缺少 id"))?;
@@ -168,6 +179,12 @@ pub fn register(registry: &mut AiToolRegistry, db: &Arc<Database>) {
         "advance_task",
         "推进任务状态，必须走状态机(8 态: todo/in_progress/in_review/testing/blocked/done/cancelled/deferred)，按 target_status 推进，不可跳跃(非法转换会被状态机拦截)。退回转换(in_review→in_progress 等)自动累加 review_rounds。返回推进后的最新 TaskRecord",
         RiskLevel::Medium,
+        // display_verb 刻意不设:轻量标签缺位让审批文案走模板(含 target_status 详情),与旧表一致
+        meta: ToolMeta {
+            entity_action: Some(("task", "update")),
+            approval_hint: Some(("推进任务状态：{} → {}", &["id", "target_status"])),
+            ..Default::default()
+        },
         schema: object_schema(vec![("id", "string", true), ("target_status", "string", true)]),
         args => {
             let id = args["id"].as_str().ok_or_else(|| anyhow::anyhow!("缺少 id"))?;
@@ -211,6 +228,11 @@ pub fn register(registry: &mut AiToolRegistry, db: &Arc<Database>) {
         "delete_task",
         "删除任务（移入回收站，可恢复）",
         RiskLevel::High,
+        meta: ToolMeta {
+            entity_action: Some(("task", "delete")),
+            display_verb: Some("删除任务"),
+            ..Default::default()
+        },
         schema: object_schema(vec![("id", "string", true)]),
         args => {
             let id = args["id"].as_str().ok_or_else(|| anyhow::anyhow!("缺少 id"))?;