feat(toolbox): F1 拆书 teardown 落库成项目 rules

- teardown_spec.writes=["rules"]（只声明 tier，入库仍经白名单 gate，不变量 #3）
- toolbox_registry teardown entry 加 ingest=IngestSpec(table="rules")
- routers/toolbox.py 通用 ingest dispatcher 加 _ingest_rules：
  BookTeardownResult(themes/archetypes/structure/hooks) 拍平为可读 rules 条目，
  落项目级（无 continuity 预检，仿 _ingest_outline 无 409）
- schemas/toolbox.py 加 TeardownIngestView + ToolIngestRequest.teardown
- 单测：teardown ingest→rules 真落行 + 预览(generate)不写库

后端门禁绿：ruff/format/mypy clean · alembic no drift · pytest 644 passed

packages/skills/tests/test_toolbox_registry.py

@@ -19,13 +19,13 @@ _NEW_KEYS = {
     "glossary",
     "opening",
     "fine-outline",
-    # 竞品快赢（Scope B）：续写 / 扩写 / 降AI率 / 拆书（全 preview-only）。
+    # 竞品快赢（Scope B）：续写/扩写/降AI率 preview-only；拆书 F1 可落库 rules。
     "continue",
     "expand",
     "de-ai",
     "teardown",
 }
-_INGEST_KEYS = {"golden-finger", "glossary", "fine-outline"}
+_INGEST_KEYS = {"golden-finger", "glossary", "fine-outline", "teardown"}
 
 
 def test_toolbox_has_all_tools() -> None:
@@ -70,6 +70,9 @@ def test_ingest_tools_declare_known_table() -> None:
     assert TOOLBOX["glossary"].ingest.table == "world_entities"
     assert TOOLBOX["fine-outline"].ingest is not None
     assert TOOLBOX["fine-outline"].ingest.table == "outline"
+    # F1：拆书结论落库为项目 rules。
+    assert TOOLBOX["teardown"].ingest is not None
+    assert TOOLBOX["teardown"].ingest.table == "rules"
 
 
 def test_chapter_tools_have_chapter_no_field() -> None:

packages/skills/ww_skills/toolbox_registry.py

@@ -197,7 +197,7 @@ TOOLBOX: dict[str, GeneratorTool] = {
         input_fields=[_chapter_no_field(), _BRIEF_FIELD],
         ingest=IngestSpec(table="outline"),
     ),
-    # ---- 竞品快赢（Scope B）：续写 / 扩写 / 降AI率 / 拆书（全 preview-only，writes=[]）----
+    # ---- 竞品快赢（Scope B）：续写/扩写/降AI率 preview-only；拆书 F1 可落库 rules ----
     "continue": GeneratorTool(
         key="continue",
         title="续写生成器",
@@ -252,6 +252,7 @@ TOOLBOX: dict[str, GeneratorTool] = {
             _SOURCE_TEXT_FIELD,
             _BRIEF_FIELD,
         ],
+        ingest=IngestSpec(table="rules"),  # F1：拆书结论拍平为项目 rules 条目落库
     ),
 }