fix: tune TAP memory and parallelism to prevent OOM
- increase memory from 1gb to 2gb
- reduce resync parallelism from 2 to 1 (only one repo CAR in memory at a time)
- reduce firehose parallelism from 10 to 5
- reduce outbox capacity from 100k to 10k (we don't need large buffers)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>