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/contact.ts

@@ -58,7 +58,7 @@ const CATEGORY_LABELS: Record<string, string> = {
 
 const VALID_CATEGORIES = ["bug", "game_data", "user_report", "feature", "feedback", "database"]
 
-export const contactRoutes = new Elysia({ prefix: "/contact" }).post(
+export const contactRoutes = new Elysia({ prefix: "/contact", detail: { tags: ["Contact"] } }).post(
   "/",
   async ({ body, request, set }) => {
     const payload = body as {