refactor: extract star/notification/badge helpers into database.py and add enrich_items content module

Introduce `update_target_stars`, `get_target_owner_uid`, and `VOTABLE_TARGETS`/`STAR_TARGETS` in database.py; replace inline badge insertion with `award_badge()` and inline notification creation with `create_notification()` across auth, comments, and follow routers; add `enrich_items()` in new content module to centralize post/gist list assembly and remove duplicated enrichment logic from feed and gists routers.

devplacepy/routers/uploads.py

@@ -3,7 +3,7 @@ from pathlib import Path
 from fastapi import APIRouter, Request
 from fastapi.responses import JSONResponse
 from devplacepy.database import get_table, get_setting, get_int_setting
-from devplacepy.utils import require_user
+from devplacepy.utils import require_user_api
 from devplacepy.attachments import store_attachment, delete_attachment as _delete_attachment, ALLOWED_UPLOAD_TYPES
 
 logger = logging.getLogger(__name__)
@@ -12,7 +12,7 @@ router = APIRouter()
 
 @router.post("/upload")
 async def upload_file(request: Request):
-    user = require_user(request)
+    user = require_user_api(request)
     form = await request.form()
     file = form.get("file")
 
@@ -49,7 +49,7 @@ async def upload_file(request: Request):
 
 @router.delete("/delete/{attachment_uid}")
 async def delete_attachment_route(request: Request, attachment_uid: str):
-    user = require_user(request)
+    user = require_user_api(request)
     att = get_table("attachments").find_one(uid=attachment_uid)
     if not att:
         return JSONResponse({"error": "Attachment not found"}, status_code=404)