feat: observability — Winston logging, pagination admin, N+1 playlists

backend/src/routes/video.routes.ts

@@ -1,5 +1,6 @@
 import { Router, Request, Response } from "express";
 import { AppDataSource } from "../config/data-source";
+import logger from "../utils/logger";
 import { Video } from "../entities/Video";
 import { User } from "../entities/User";
 import { requireAuth, AuthenticatedRequest, AuthenticatedUser } from "../middleware/auth.middleware";
@@ -51,7 +52,8 @@ router.get("/", async (req: Request, res: Response): Promise<void> => {
     }));
 
     res.json({ success: true, data: { videos: result } });
-  } catch {
+  } catch (err) {
+    logger.error("GET /videos — failed to list videos", { err });
     res.status(500).json({ success: false, error: "INTERNAL_ERROR" });
   }
 });
@@ -84,7 +86,8 @@ router.get("/:id", async (req: Request, res: Response): Promise<void> => {
     }
 
     res.json({ success: true, data: { video } });
-  } catch {
+  } catch (err) {
+    logger.error("GET /videos/:id — failed to fetch video", { err, id: req.params.id });
     res.status(500).json({ success: false, error: "INTERNAL_ERROR" });
   }
 });