Built the admin tools previously listed as missing:
- Badge upload (/admin/badges): uploads a <code>.gif into the emulator's
badge dir via BADGE_UPLOAD_DIR (node:fs); validated code/type/size,
logged. Made configurable rather than skipped.
- Radio tools: /admin/radio/api-keys (CRUD, server-generated keys),
/admin/radio/autodj (Auto-DJ playlist CRUD), /admin/radio/embed (embed
snippet generator), /admin/radio/points (points settings),
/admin/radio/monitoring (live stream/now-playing/listeners status).
radio_api_keys + radio_auto_dj_playlist already had real columns.
- /admin/vpn: VPN/proxy detection config (block toggle + provider + key),
complementing /admin/ip's raw blacklist.
- Writeable boxes: new website_writeable_boxes table (model + migration
0006) + /admin/writeable-boxes CRUD; active boxes render on the public
home page. env: BADGE_UPLOAD_DIR.
Verified live (prod, amx_test): all 8 pages render with real data; a test
writeable box appeared on the public home and was reverted. tsc 0,
vitest 49/49, next build 0 (7 new admin routes).
