重构: 文档汇总+进度看板+孤儿任务清理脚本+gitignore 噪音排除

- docs/02 架构设计: 新增 aichat审查/异步审批构想/流式渲染调研/generating状态机/密钥迁移健壮性/工作流脚本执行边界/条件表达式引擎/F-07 trait下沉/Agent架构说明/任务推进构想/功能创意池;更新功能决策记录+归档/对抗论证/文档记录规范/经验记录
- docs/03 模块文档: 新增 AI对话引擎/DAG引擎详解;更新 df-knowledge/df-nodes/df-storage/df-workflow/df-ai
- docs/05 代码审查: 新增 全栈审查/全局review/架构审查/近期改动审查/工作区多角度走查/自研memo流式渲染审查
- docs/09 问题排查: 新增 aichat-apikey-401
- docs/INDEX+README 索引同步;docs/todo 待办看板(2026-06-15 汇总)
- PROGRESS.md Sprint 22-25;URGENT.md 加急清单快照(5 项 P0 已全修)
- scripts/cleanup_orphan_tasks.{py,sh} 孤儿任务清理工具
- .gitignore 补 *.broken.bak + tmp/ 噪音排除

scripts/cleanup_orphan_tasks.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+"""清理孤儿任务 — 删除不属于任何现有项目的任务记录"""
+import sqlite3
+import os
+import sys
+
+# 自动定位数据库
+candidates = []
+appdata = os.environ.get("APPDATA", "")
+if appdata:
+    candidates.append(os.path.join(appdata, "top.1216.devflow", "devflow-dev.db"))
+    candidates.append(os.path.join(appdata, "top.1216.devflow", "devflow.db"))
+
+localappdata = os.environ.get("LOCALAPPDATA", "")
+if localappdata:
+    candidates.append(os.path.join(localappdata, "top.1216.devflow", "devflow-dev.db"))
+
+# 也支持命令行传参
+if len(sys.argv) > 1:
+    candidates.insert(0, sys.argv[1])
+
+db_path = None
+for c in candidates:
+    if os.path.isfile(c):
+        db_path = c
+        break
+
+if not db_path:
+    print("❌ 未找到数据库文件，尝试过的路径：")
+    for c in candidates:
+        print(f"   {c}")
+    print("\n请手动指定: python scripts/cleanup_orphan_tasks.py <db_path>")
+    sys.exit(1)
+
+print(f"📍 数据库: {db_path}\n")
+
+conn = sqlite3.connect(db_path)
+conn.execute("PRAGMA foreign_keys = OFF")
+
+# 查看孤儿任务
+rows = conn.execute("""
+    SELECT t.id, t.title, t.project_id
+    FROM tasks t
+    LEFT JOIN projects p ON t.project_id = p.id
+    WHERE p.id IS NULL
+    ORDER BY t.project_id, t.created_at
+""").fetchall()
+
+print(f"=== 孤儿任务列表（{len(rows)} 条）===\n")
+for tid, title, pid in rows:
+    print(f"  [{pid[:8]}...] {title}")
+print()
+
+if not rows:
+    print("✅ 无孤儿任务，无需清理。")
+    conn.close()
+    sys.exit(0)
+
+# 直接删除（无需确认，用户已通过对话授权）
+conn.execute("""
+    DELETE FROM tasks
+    WHERE project_id NOT IN (SELECT id FROM projects)
+""")
+conn.commit()
+
+# 验证
+remaining = conn.execute("""
+    SELECT COUNT(*) FROM tasks t
+    LEFT JOIN projects p ON t.project_id = p.id
+    WHERE p.id IS NULL
+""").fetchone()[0]
+
+total = conn.execute("SELECT COUNT(*) FROM tasks").fetchone()[0]
+
+conn.close()
+
+print(f"✅ 已删除 {len(rows)} 条孤儿任务")
+print(f"📊 剩余任务: {total} 条（孤儿: {remaining} 条）")