feat: Wave 2 - API org isolation + factory.html + insights.html

- Add org_id auto-population to articles.py, publishing.py, metrics.py
- Add org_id filtering to search_rankings.py geo endpoints
- Add org_id to calendar.py create/update/delete endpoints
- Add org_id to tasks.py create endpoints
- Create factory.html content pipeline page (3-tab: 待创作/进行中/待审查)
- Create insights.html analytics page (4-tab: 概览/搜索排名/GEO/平台对比)

platform/backend/app/api/tasks.py

@@ -16,10 +16,13 @@ router = APIRouter(prefix="/api/tasks", tags=["tasks"])
 
 def _check_task_org(task, current_user, db):
     """Check if task's topic belongs to user's org"""
-    if current_user.role == "admin" or not task.topic_id:
+    if current_user.role == "admin":
         return True
-    topic = db.query(Topic).filter(Topic.id == task.topic_id).first()
-    if topic and topic.org_id != current_user.org_id:
+    if task.topic_id:
+        topic = db.query(Topic).filter(Topic.id == task.topic_id).first()
+        if topic and topic.org_id != current_user.org_id:
+            raise HTTPException(status_code=404, detail="任务不存在")
+    elif current_user.role != "admin" and task.org_id != current_user.org_id:
         raise HTTPException(status_code=404, detail="任务不存在")
     return True
 
@@ -87,7 +90,8 @@ def create_task(
         topic_id=data.topic_id,
         stage=data.stage,
         status="pending",
-        created_by=data.created_by or current_user.username
+        created_by=data.created_by or current_user.username,
+        org_id=current_user.org_id or "default"
     )
     db.add(task)
     db.commit()
@@ -438,7 +442,8 @@ def run_creator_task(
         stage="creator",
         status="running",
         started_at=now,
-        created_by=current_user.username
+        created_by=current_user.username,
+        org_id=current_user.org_id or "default"
     )
     db.add(task)
     db.commit()