- catalog: apply bulk offer edits in a single transaction with one RCON
refresh instead of N round-trips, virtualize the items table past 150
rows and cap the shop preview at 200 tiles
- cache: lift the public cache TTLs and the boot warm-up into env-tunable
constants (src/lib/perf-ttls.ts; CMS_*_TTL_SEC, CMS_WARMUP_ENABLED)
- auth: resolve the captcha provider, site key and secret from
CAPTCHA_PROVIDER, TURNSTILE_SITE_KEY and TURNSTILE_SECRET_KEY when the
admin settings are unset; an explicit DB value (including "none") still
wins, so Turnstile can be enabled per-deploy without touching the DB.
