Raw game scores (capture points) are tied in most matches since the
winner is determined by an energy/bots-alive tiebreaker. This caused
Glicko-2 delta=0, leaving rating_mu frozen at 1500 for all bots.
Now winner gets 1.0, non-winners 0.0, draws 0.5 — correct pairwise
win/loss signal for Glicko-2 convergence.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace random 2-player pairing with the full §6.1 algorithm:
- Seed selection: bot with oldest last-match timestamp (tiebreak: lowest bot ID)
- Format selection: seed's least-played player count among {2, 3, 4, 6}
- Opponent selection: Pareto 80%/16-rank skill proximity + oldest last-pairing
with seed + fewest 24h games for game-count balance
- Map selection: least-recently-used active map for the chosen player count,
with map_scores.last_used_at updated after each match
- Random player slot assignment for all participant counts
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
PacifistBot never attacks; it survives by maximizing distance from enemies
and retreating toward own core when cornered. Pure evasion strategy that
wins via opponent elimination by third parties.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Worker now gzip-compresses replays before uploading to B2 with
key replays/{match_id}.json.gz and Content-Encoding: gzip.
Updated B2 client Upload to accept contentEncoding parameter.
Fixed downstream web consumers (matches, bot-profile, playlists)
to reference .json.gz URLs.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Upload replays to B2 (Backblaze) instead of R2 for cold archive storage
- Write match results directly to PostgreSQL instead of HTTP API
- Perform Glicko-2 rating updates in worker after match completion
- Update config: ACB_R2_* env vars → ACB_B2_*
- Remove obsolete api_test.go (tested removed HTTP client)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds a metrics HTTP server to acb-worker exposing Prometheus text format
at /metrics, plus /health and /ready K8s probe endpoints. Tracks counters
(matches, errors, jobs, replays, polls, heartbeats) and histograms
(match duration, replay upload duration, replay size). Instruments the
full worker execution flow. Fixes .gitignore binary patterns to use
root-anchored paths so cmd/ subdirectories aren't incorrectly excluded.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Worker polls Cloudflare Worker API for pending match jobs
- Claims jobs and executes matches using the game engine
- Uploads replays to R2 via S3-compatible API
- Sends heartbeats during match execution
- Submits results back to Worker API
- Includes retry logic with exponential backoff
- API client tests for job coordination endpoints
Also fixes glicko2.ts: export g() and E() functions for testing
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
