perf(backend): 角色/世界观入库改批量——create_many 一次 flush 落全部行

角色入库端点与 toolbox world_entities 入库端点原逐卡/逐条 create（每行一次
SELECT/flush/refresh，N+1 round-trip）。新增 create_many：世界观用 add_all，
角色用一次 IN 查已有名 + 一次 flush（保持 (project_id,name) upsert 幂等与批内
重名去重、保序返回）。单条 create 薄封装 create_many，行为不变（既有调用方/E2E
复用）。复活并复用 CharacterWriteFields、新增 WorldEntityFields 作批量入参。
补两端点「多行一次落库」测试；既有幂等/冲突 gate 测试与 m5 真 pg E2E 全绿。

apps/api/tests/test_generation.py

@@ -28,7 +28,7 @@ from ww_agents import (
     WorldEntityCard,
     WorldGenResult,
 )
-from ww_core.domain.character_repo import CharacterWriteView
+from ww_core.domain.character_repo import CharacterWriteFields, CharacterWriteView
 from ww_core.domain.project_repo import ProjectCreate
 from ww_core.domain.rule_repo import RuleListItemView
 from ww_llm_gateway.types import LlmRequest, LlmResponse, ServedBy, Usage
@@ -120,6 +120,27 @@ class _FakeCharacterWriteRepo:
         )
         return CharacterWriteView(id=row_id, name=name, role=role)
 
+    async def create_many(
+        self, project_id: uuid.UUID, cards: list[CharacterWriteFields]
+    ) -> list[CharacterWriteView]:
+        # 镜像 Sql：逐卡 upsert（含批内重名去重），保序返回逐卡 View。
+        return [
+            await self.create(
+                project_id,
+                name=c.name,
+                role=c.role,
+                traits=list(c.traits),
+                appearance=c.appearance,
+                motive=c.motive,
+                backstory=c.backstory,
+                arc=c.arc,
+                speech_tics=list(c.speech_tics),
+                tags=list(c.tags),
+                relations=[dict(r) for r in c.relations],
+            )
+            for c in cards
+        ]
+
 
 class _FakeRulesReadRepo:
     """实现规则 repo 的读侧 `list_for_project`（带 id，供 list_rules 端点）。"""
@@ -352,6 +373,39 @@ async def test_ingest_characters_no_conflict_writes_and_201() -> None:
     assert session.commits == 1
 
 
+@pytest.mark.asyncio
+async def test_ingest_multiple_characters_all_land_in_one_batch() -> None:
+    # 批量入库：多张卡一次 create_many 全部落库，created 保序，单次 commit。
+    repo = FakeProjectRepo()
+    pid = await _seed_project(repo)
+    gateway = _SchemaRoutingGateway({ContinuityReview: _no_conflicts()})
+    char_repo = _FakeCharacterWriteRepo()
+    app, session = _make_app(project_repo=repo, gateway=gateway, char_repo=char_repo)
+
+    def _card(name: str) -> dict[str, Any]:
+        return {
+            "name": name,
+            "role": "配角",
+            "traits": [],
+            "backstory": "x",
+            "arc": "y",
+            "speech_tics": [],
+            "tags": [],
+            "relations": [],
+        }
+
+    async with _client(app) as client:
+        resp = await client.post(
+            f"/projects/{pid}/characters",
+            json={"cards": [_card("甲"), _card("乙"), _card("丙")]},
+        )
+
+    assert resp.status_code == 201
+    assert resp.json()["created"] == ["甲", "乙", "丙"]
+    assert [r["name"] for r in char_repo.rows] == ["甲", "乙", "丙"]
+    assert session.commits == 1
+
+
 @pytest.mark.asyncio
 async def test_ingest_characters_with_conflict_blocks_409() -> None:
     repo = FakeProjectRepo()

apps/api/tests/test_toolbox_endpoints.py

@@ -32,7 +32,7 @@ from ww_core.domain.outline_write_repo import OutlineWriteView
 from ww_core.domain.project_repo import ProjectCreate
 from ww_core.domain.repositories import OutlineView
 from ww_core.domain.rule_repo import RuleWriteView
-from ww_core.domain.world_entity_repo import WorldEntityWriteView
+from ww_core.domain.world_entity_repo import WorldEntityFields, WorldEntityWriteView
 from ww_llm_gateway.types import LlmRequest, LlmResponse, ServedBy, Usage
 from ww_shared import AppError, ErrorCode
 
@@ -75,6 +75,15 @@ class _FakeWorldWriteRepo:
         self.rows.append({"type": type, "name": name, "rules": list(rules)})
         return WorldEntityWriteView(id=uuid.uuid4(), type=type, name=name)
 
+    async def create_many(
+        self, project_id: uuid.UUID, entities: list[WorldEntityFields]
+    ) -> list[WorldEntityWriteView]:
+        # 镜像 Sql：批量插入，保序返回逐条 View。
+        return [
+            await self.create(project_id, type=e.type, name=e.name, rules=list(e.rules))
+            for e in entities
+        ]
+
 
 class _FakeOutlineWriteRepo:
     def __init__(self) -> None:
@@ -569,6 +578,30 @@ async def test_ingest_world_entities_no_conflict_writes_201() -> None:
     assert session.commits == 1
 
 
+@pytest.mark.asyncio
+async def test_ingest_multiple_world_entities_all_land_in_one_batch() -> None:
+    # 批量入库：多条实体一次 create_many 全部落库，created 保序，单次 commit。
+    repo = FakeProjectRepo()
+    pid = await _seed_project(repo)
+    gateway = _SchemaRoutingGateway({ContinuityReview: _no_conflicts()})
+    app, session, world_repo, _ = _make_app(project_repo=repo, gateway=gateway)
+    payload = {
+        "world_entities": [
+            {"type": "力量体系", "name": "吞噬系统", "rules": ["每日上限"]},
+            {"type": "势力", "name": "天机阁", "rules": ["中立"]},
+            {"type": "地点", "name": "无尽海", "rules": []},
+        ]
+    }
+
+    async with _client(app) as client:
+        resp = await client.post(f"/projects/{pid}/skills/golden-finger/ingest", json=payload)
+
+    assert resp.status_code == 201
+    assert resp.json()["created"] == ["吞噬系统", "天机阁", "无尽海"]
+    assert [r["name"] for r in world_repo.rows] == ["吞噬系统", "天机阁", "无尽海"]
+    assert session.commits == 1
+
+
 @pytest.mark.asyncio
 async def test_ingest_world_entities_conflict_blocks_409() -> None:
     repo = FakeProjectRepo()

apps/api/ww_api/routers/generation.py

@@ -33,6 +33,7 @@ from ww_agents import (
     worldbuilder_spec,
 )
 from ww_core.domain import (
+    CharacterWriteFields,
     CharacterWriteRepo,
     ProjectRepo,
     RuleWriteRepo,
@@ -372,10 +373,8 @@ async def ingest_characters(
             rejected_tables=rejected,
         )
 
-    created: list[str] = []
-    for card in allowed.get("characters", []):
-        view = await char_repo.create(
-            project_id,
+    fields = [
+        CharacterWriteFields(
             name=card.name,
             role=card.role,
             traits=list(card.traits),
@@ -387,7 +386,10 @@ async def ingest_characters(
             tags=list(card.tags),
             relations=[r.model_dump() for r in card.relations],
         )
-        created.append(view.name)
+        for card in allowed.get("characters", [])
+    ]
+    # 批量 upsert（一次 flush 落全部），保序返回逐卡 View。
+    created = [view.name for view in await char_repo.create_many(project_id, fields)]
 
     # 提交边界：网关 ledger（precheck）+ 角色写侧均只 flush → 端点末尾一次 commit。
     await session.commit()

apps/api/ww_api/routers/toolbox.py

@@ -25,7 +25,7 @@ from ww_core.domain.outline_write_repo import OutlineWriteRepo
 from ww_core.domain.project_repo import ProjectRepo
 from ww_core.domain.repositories import MemoryRepos, OutlineRepo
 from ww_core.domain.rule_repo import RuleWriteRepo
-from ww_core.domain.world_entity_repo import WorldEntityWriteRepo
+from ww_core.domain.world_entity_repo import WorldEntityFields, WorldEntityWriteRepo
 from ww_core.orchestrator import run_generator
 from ww_db import get_session
 from ww_llm_gateway import Gateway
@@ -427,12 +427,12 @@ async def _ingest_world_entities(
             rejected_tables=rejected,
         )
 
-    created: list[str] = []
-    for entity in allowed.get("world_entities", []):
-        view = await world_write_repo.create(
-            project_id, type=entity.type, name=entity.name, rules=list(entity.rules)
-        )
-        created.append(view.name)
+    fields = [
+        WorldEntityFields(type=entity.type, name=entity.name, rules=list(entity.rules))
+        for entity in allowed.get("world_entities", [])
+    ]
+    # 批量插入（一次 flush 落全部），保序返回逐条 View。
+    created = [view.name for view in await world_write_repo.create_many(project_id, fields)]
 
     await session.commit()
     log.info(

packages/core/ww_core/domain/__init__.py

@@ -9,6 +9,7 @@ from ww_core.domain.chapter_repo import (
     SqlChapterRepo,
 )
 from ww_core.domain.character_repo import (
+    CharacterWriteFields,
     CharacterWriteRepo,
     CharacterWriteView,
     SqlCharacterWriteRepo,
@@ -73,6 +74,7 @@ from ww_core.domain.template_repo import (
 )
 from ww_core.domain.world_entity_repo import (
     SqlWorldEntityWriteRepo,
+    WorldEntityFields,
     WorldEntityWriteRepo,
     WorldEntityWriteView,
 )
@@ -82,9 +84,11 @@ __all__ = [
     "ChapterRepo",
     "ChapterView",
     "SqlChapterRepo",
+    "CharacterWriteFields",
     "CharacterWriteRepo",
     "CharacterWriteView",
     "SqlCharacterWriteRepo",
+    "WorldEntityFields",
     "WorldEntityWriteRepo",
     "WorldEntityWriteView",
     "SqlWorldEntityWriteRepo",

packages/core/ww_core/domain/character_repo.py

@@ -75,12 +75,35 @@ class CharacterWriteRepo(Protocol):
         relations: list[dict[str, Any]],
     ) -> CharacterWriteView: ...
 
+    async def create_many(
+        self, project_id: uuid.UUID, cards: list[CharacterWriteFields]
+    ) -> list[CharacterWriteView]:
+        """批量 upsert 角色卡（一次 flush 落全部），逐卡返回 View（保序、含重名重复）。"""
+        ...
+
+
+class CharacterWriteFields(BaseModel):
+    """从 `CharacterCard` 拆出的入库字段（端点把 schema 卡转成此形喂 create_many）。"""
+
+    name: str
+    role: str
+    traits: list[str] = Field(default_factory=list)
+    appearance: str = ""
+    motive: str = ""
+    backstory: str
+    arc: str
+    speech_tics: list[str] = Field(default_factory=list)
+    tags: list[Any] = Field(default_factory=list)
+    relations: list[dict[str, Any]] = Field(default_factory=list)
+
 
 class SqlCharacterWriteRepo:
-    """SQLAlchemy 实现：upsert 一行 `characters`（schema→DB 形变；只 flush 不 commit）。
+    """SQLAlchemy 实现：upsert `characters`（schema→DB 形变；只 flush 不 commit）。
 
-    幂等：先按 (project_id, name) 查既有行——命中则原地更新该行字段，否则插新行。
+    幂等：按 (project_id, name) 查既有行——命中则原地更新该行字段，否则插新行。
     避免同名角色重复入库产生重复卡（QA #8；不加 DB 约束，纯 app 层）。
+    批量入库走 `create_many`：一次 `IN` 查已有名 + 一次 `flush` 落全部新行（少 N 次
+    round-trip），语义与逐卡 `create` 完全一致（含批内重名去重与保序返回）。
     """
 
     def __init__(self, session: AsyncSession) -> None:
@@ -101,56 +124,61 @@ class SqlCharacterWriteRepo:
         tags: list[Any],
         relations: list[dict[str, Any]],
     ) -> CharacterWriteView:
-        existing = (
-            await self._s.execute(
-                select(Character).where(Character.project_id == project_id, Character.name == name)
-            )
-        ).scalar_one_or_none()
-        if existing is not None:
-            existing.role = role
-            existing.traits = _traits_to_jsonb(traits)
-            existing.appearance = appearance
-            existing.motive = motive
-            existing.backstory = backstory
-            existing.arc = _arc_to_jsonb(arc)
-            existing.speech_tics = _traits_to_jsonb(speech_tics)
-            existing.tags = list(tags)
-            existing.relations = [dict(r) for r in relations]
-            await self._s.flush()
-            await self._s.refresh(existing)
-            return CharacterWriteView(id=existing.id, name=existing.name, role=existing.role)
-        row = Character(
-            project_id=project_id,
+        """单卡 upsert——薄封装 `create_many`，行为不变（供既有调用方/E2E 复用）。"""
+        fields = CharacterWriteFields(
             name=name,
             role=role,
-            traits=_traits_to_jsonb(traits),
+            traits=list(traits),
             appearance=appearance,
             motive=motive,
             backstory=backstory,
-            arc=_arc_to_jsonb(arc),
-            speech_tics=_traits_to_jsonb(speech_tics),
+            arc=arc,
+            speech_tics=list(speech_tics),
             tags=list(tags),
-            relations=[dict(r) for r in relations],
+            relations=list(relations),
         )
-        self._s.add(row)
-        await self._s.flush()
-        await self._s.refresh(row)
-        return CharacterWriteView(id=row.id, name=row.name, role=row.role)
+        return (await self.create_many(project_id, [fields]))[0]
 
+    def _apply_fields(self, row: Character, card: CharacterWriteFields) -> None:
+        """把入库字段写到 ORM 行（schema→DB JSONB 形变；新旧行共用）。"""
+        row.role = card.role
+        row.traits = _traits_to_jsonb(card.traits)
+        row.appearance = card.appearance
+        row.motive = card.motive
+        row.backstory = card.backstory
+        row.arc = _arc_to_jsonb(card.arc)
+        row.speech_tics = _traits_to_jsonb(card.speech_tics)
+        row.tags = list(card.tags)
+        row.relations = [dict(r) for r in card.relations]
 
-# ---- request-shaping helper（schema 字段名导出供测试/端点共用）----
-
-
-class CharacterWriteFields(BaseModel):
-    """从 `CharacterCard` 拆出的入库字段（端点把 schema 卡转成此 kwargs 形）。"""
-
-    name: str
-    role: str
-    traits: list[str] = Field(default_factory=list)
-    appearance: str = ""
-    motive: str = ""
-    backstory: str
-    arc: str
-    speech_tics: list[str] = Field(default_factory=list)
-    tags: list[Any] = Field(default_factory=list)
-    relations: list[dict[str, Any]] = Field(default_factory=list)
+    async def create_many(
+        self, project_id: uuid.UUID, cards: list[CharacterWriteFields]
+    ) -> list[CharacterWriteView]:
+        if not cards:
+            return []
+        names = [c.name for c in cards]
+        existing = (
+            (
+                await self._s.execute(
+                    select(Character).where(
+                        Character.project_id == project_id, Character.name.in_(names)
+                    )
+                )
+            )
+            .scalars()
+            .all()
+        )
+        by_name: dict[str, Character] = {r.name: r for r in existing}
+        rows: list[Character] = []
+        for card in cards:
+            row = by_name.get(card.name)
+            if row is None:
+                row = Character(project_id=project_id, name=card.name)
+                self._apply_fields(row, card)
+                self._s.add(row)
+                by_name[card.name] = row
+            else:
+                self._apply_fields(row, card)
+            rows.append(row)  # 逐卡收集（同名多卡指向同一行 → 保序返回含重复）。
+        await self._s.flush()  # 一次 flush 落全部新行；server_default id 经 RETURNING 回填。
+        return [CharacterWriteView(id=r.id, name=r.name, role=r.role) for r in rows]

packages/core/ww_core/domain/world_entity_repo.py

@@ -36,6 +36,14 @@ def _rules_to_jsonb(rules: list[str]) -> dict[str, Any]:
     return {"rules": list(rules)}
 
 
+class WorldEntityFields(BaseModel):
+    """单条世界观实体入库字段（端点把 schema 卡转成此形喂 create_many）。"""
+
+    type: str
+    name: str
+    rules: list[str]
+
+
 class WorldEntityWriteRepo(Protocol):
     """世界观实体写侧接口（按 project_id 隔离；只 flush 不 commit）。"""
 
@@ -48,9 +56,19 @@ class WorldEntityWriteRepo(Protocol):
         rules: list[str],
     ) -> WorldEntityWriteView: ...
 
+    async def create_many(
+        self, project_id: uuid.UUID, entities: list[WorldEntityFields]
+    ) -> list[WorldEntityWriteView]:
+        """批量插入世界观实体（一次 flush 落全部），逐条保序返回 View。"""
+        ...
+
 
 class SqlWorldEntityWriteRepo:
-    """SQLAlchemy 实现：插一行 `world_entities`（rules list→dict；只 flush 不 commit）。"""
+    """SQLAlchemy 实现：插 `world_entities`（rules list→dict；只 flush 不 commit）。
+
+    批量入库走 `create_many`：`add_all` + 一次 `flush`（少 N 次 round-trip），
+    语义与逐条 `create` 一致；server_default id 经 RETURNING 回填。
+    """
 
     def __init__(self, session: AsyncSession) -> None:
         self._s = session
@@ -63,13 +81,24 @@ class SqlWorldEntityWriteRepo:
         name: str,
         rules: list[str],
     ) -> WorldEntityWriteView:
-        row = WorldEntity(
-            project_id=project_id,
-            type=type,
-            name=name,
-            rules=_rules_to_jsonb(rules),
-        )
-        self._s.add(row)
-        await self._s.flush()
-        await self._s.refresh(row)
-        return WorldEntityWriteView(id=row.id, type=row.type, name=row.name)
+        """单条插入——薄封装 `create_many`，行为不变（供既有调用方复用）。"""
+        entity = WorldEntityFields(type=type, name=name, rules=list(rules))
+        return (await self.create_many(project_id, [entity]))[0]
+
+    async def create_many(
+        self, project_id: uuid.UUID, entities: list[WorldEntityFields]
+    ) -> list[WorldEntityWriteView]:
+        if not entities:
+            return []
+        rows = [
+            WorldEntity(
+                project_id=project_id,
+                type=e.type,
+                name=e.name,
+                rules=_rules_to_jsonb(e.rules),
+            )
+            for e in entities
+        ]
+        self._s.add_all(rows)
+        await self._s.flush()  # 一次 flush 落全部；server_default id 经 RETURNING 回填。
+        return [WorldEntityWriteView(id=r.id, type=r.type, name=r.name) for r in rows]