fix(05-review): WR-03 log error.message not raw error in push route catch blocks

apps/api/src/routes/push.ts

@@ -114,7 +114,10 @@ pushRouter.post('/subscription', zValidator('json', subscribeSchema), async (c)
 
     return c.json({ ok: true }, 201)
   } catch (err) {
-    console.error('[push/POST /subscription] DB operation failed:', err)
+    console.error(
+      '[push/POST /subscription] DB operation failed:',
+      err instanceof Error ? err.message : String(err),
+    )
     return c.json({ error: 'Service unavailable' }, 503)
   }
 })
@@ -133,7 +136,10 @@ pushRouter.delete('/subscription', async (c) => {
     await db.delete(pushSubscriptions).where(eq(pushSubscriptions.userId, userId))
     return c.json({ ok: true })
   } catch (err) {
-    console.error('[push/DELETE /subscription] DB operation failed:', err)
+    console.error(
+      '[push/DELETE /subscription] DB operation failed:',
+      err instanceof Error ? err.message : String(err),
+    )
     return c.json({ error: 'Service unavailable' }, 503)
   }
 })