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/hardware-stats.ts

@@ -8,7 +8,7 @@ import {
 } from "@/lib/db/schema"
 import { eq, and, sql, desc } from "drizzle-orm"
 
-export const hardwareStatsRoutes = new Elysia({ prefix: "/hardware" })
+export const hardwareStatsRoutes = new Elysia({ prefix: "/hardware", detail: { tags: ["Hardware"] } })
   // ── All devices with aggregated stats ──────────────────────
   .get(
     "/stats",