feat(governance): add agent market automation surfaces

apps/api/src/db/base.py

@@ -16,6 +16,7 @@ Features:
 from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
 
+from fastapi import HTTPException
 from sqlalchemy import text
 from sqlalchemy.ext.asyncio import (
     AsyncEngine,
@@ -26,6 +27,8 @@ from sqlalchemy.ext.asyncio import (
 from sqlalchemy.orm import DeclarativeBase
 
 from src.core.config import settings
+from src.core.context import get_current_project_context
+from src.core.logging import get_logger
 
 # =============================================================================
 # Base Model
@@ -42,6 +45,19 @@ class Base(DeclarativeBase):
 
 _engine: AsyncEngine | None = None
 _session_factory: async_sessionmaker[AsyncSession] | None = None
+logger = get_logger("awoooi.db")
+
+
+def _raise_unauthorized_db_context(msg: str) -> None:
+    context = get_current_project_context()
+    logger.error(
+        "db_context_missing",
+        reason=msg,
+        project_id=context.get("project_id"),
+        project_id_source=context.get("source"),
+        request_id=context.get("request_id"),
+    )
+    raise HTTPException(status_code=401, detail="Missing tenant context: project_id is required")
 
 
 def get_engine() -> AsyncEngine:
@@ -109,10 +125,16 @@ async def get_db() -> AsyncGenerator[AsyncSession, None]:
             from src.core.context import get_current_project_id
 
             # AwoooP Phase 2.3 (2026-05-04 ogt): SET LOCAL app.project_id 讓 RLS Policy 生效
-            # 預設 'awoooi'，多租戶路由將透過 contextvar 注入實際 project_id
+            # Fail-Closed RLS: 遇到未授權情境拋出錯誤而非回退到 "awoooi"
+            pid = get_current_project_id()
+            if not pid:
+                _raise_unauthorized_db_context(
+                    "Unauthorized: project_id is missing in context (Fail-Closed RLS)"
+                )
+
             await session.execute(
                 text("SELECT set_config('app.project_id', :pid, TRUE)"),
-                {"pid": get_current_project_id()},
+                {"pid": pid},
             )
             yield session
             await session.commit()
@@ -126,12 +148,12 @@ async def get_db_context(project_id: str | None = None) -> AsyncGenerator[AsyncS
     """
     Context manager for database session (non-FastAPI usage)
 
-    AwoooP Phase 2.3/2.4: 優先序 — 明確參數 > contextvar > "awoooi"
+    AwoooP Phase 2.3/2.4: 優先序 — 明確參數 > contextvar（缺失則 fail-closed）
     - Phase 2.3: 啟用 RLS tenant isolation（SET LOCAL app.project_id）
     - Phase 2.4: 從 asyncio contextvar 讀取 background loop 的 project_id
 
     Usage:
-        async with get_db_context() as db:               # 繼承 contextvar 或預設 awoooi
+        async with get_db_context() as db:               # 繼承 contextvar（缺失將 fail-closed）
             ...
         async with get_db_context("other-tenant") as db:  # 明確指定 tenant
             ...
@@ -139,6 +161,9 @@ async def get_db_context(project_id: str | None = None) -> AsyncGenerator[AsyncS
     from src.core.context import get_current_project_id
     effective_pid = project_id if project_id is not None else get_current_project_id()
 
+    if not effective_pid:
+        _raise_unauthorized_db_context("Unauthorized: project_id is missing in context (Fail-Closed RLS)")
+
     factory = get_session_factory()
     async with factory() as session:
         try: