chore(prep): shared groundwork for the Sprint-2 parallel batch

第二批（T6~T11）协调提交：
- 迁移 0005：kb 七表（entity/relation/rule/chunk vector1024+tsv 生成列/
  asset/color/gap），HNSW+GIN 索引，FK 级联
- ORM：七个 Kb* 模型（pgvector Vector/TSVECTOR/Computed）
- 配置：检索与 embedding、华为 JWKS、短信全参数组
- 错误码：40110/40111/42910/42911/61000
- 骨架路由：kb.py + auth_sms.py（已注册）；依赖：tencentcloud-sdk-python-sms
  + spike extra（onnxruntime/opencv）；gitignore：models/ 与 spike 输出

apps/api/main.py

@@ -12,7 +12,7 @@ from contextlib import asynccontextmanager
 from fastapi import FastAPI
 
 from apps.api.deps import build_llm_gateway
-from apps.api.routers import agent, auth, events, health, quota, tasks, uploads
+from apps.api.routers import agent, auth, auth_sms, events, health, kb, quota, tasks, uploads
 from packages.shared.config import Settings, get_settings
 from packages.shared.db import dispose_engine
 from packages.shared.handlers import install_exception_handlers
@@ -69,7 +69,16 @@ def create_app(settings: Settings | None = None) -> FastAPI:
     setup_tracing(app, cfg)
 
     app.include_router(health.router)
-    routers = (auth.router, agent.router, quota.router, tasks.router, events.router, uploads.router)
+    routers = (
+        auth.router,
+        auth_sms.router,
+        agent.router,
+        quota.router,
+        tasks.router,
+        events.router,
+        uploads.router,
+        kb.router,
+    )
     for router in routers:
         app.include_router(router, prefix=cfg.api_prefix)
 

apps/api/routers/auth_sms.py

@@ -0,0 +1,12 @@
+"""手机号验证码登录路由（骨架，T11 填充实现）。
+
+POST /auth/sms/send、POST /auth/sms/verify；
+实现契约见 docs/开发任务包/T11-短信登录代码先行.md。
+与 auth.py（华为/dev-token/refresh）分文件以避免并行冲突。
+"""
+
+from __future__ import annotations
+
+from fastapi import APIRouter
+
+router = APIRouter(prefix="/auth", tags=["auth-sms"])

apps/api/routers/kb.py

@@ -0,0 +1,10 @@
+"""知识库实体路由（骨架，T6 填充实现）。
+
+GET /kb/items 等；实现契约见 docs/开发任务包/T6-知识库实体与图谱.md。
+"""
+
+from __future__ import annotations
+
+from fastapi import APIRouter
+
+router = APIRouter(prefix="/kb", tags=["kb"])