run_migrations.sh auto-discovers numbered SQL files (NN_*.sql),
tracks applied migrations in tracksolid.schema_migrations table,
and skips already-applied files — safe to run on every deployment.
Usage: bash /app/run_migrations.sh
Coolify: add to Post-deployment Command in service settings.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
