duration_ms/file_size are int8; node-postgres returned them as strings,
a footgun for any consumer doing arithmetic/sorting/comparison (already
hand-patched once in playout totals). Register a global int8 type parser
so the API emits real numbers. All such values are < 2^53 (no precision loss).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
pool.js was using DB_HOST/DB_USER/etc which were never set.
The docker-compose.yml passes DATABASE_URL. Parse that if present,
fall back to individual vars for local dev.
