feat: add OpenAPI support and in-process cron scheduler

- Install @elysia/openapi to auto-generate API docs at /api/openapi
- Install @elysia/cron for in-process scheduled jobs (orphan detection at 2am, storage cleanup at 3am)
- Add Scalar UI docs with 14 tag groups and Bearer JWT security scheme
- Add route-level detail annotations (tags, summaries) to all 30+ route files
- Upgrade crud-builder to accept optional tags config
- Keep HTTP cron endpoint as manual/admin fallback

lib/api/dashboard-public.ts

@@ -4,7 +4,7 @@ import { sql } from "drizzle-orm"
 
 const SEVEN_DAYS_AGO = new Date(Date.now() - 7 * 24 * 60 * 60 * 1000)
 
-export const dashboardPublicRoutes = new Elysia({ prefix: "/dashboard" })
+export const dashboardPublicRoutes = new Elysia({ prefix: "/dashboard", detail: { tags: ["Dashboard"] } })
 
   // ── Trending Games (7-day activity) ────────────────────────────────
   .get(