v1.5.2

Added

• linux/ppc64le build -- added to the multi-arch image.
• Container healthcheck -- polls /api/2p/status every 30s so a wedged process gets restarted.

Changed

• Smaller image -- base bumped to python:3.14-alpine3.24; stripped tkinter, idlelib, turtledemo, pydoc_data, and apk from the image after install.
• requirements.txt bind-mounted during build instead of copied into a layer.
• Graceful shutdown capped at 2s (--timeout-graceful-shutdown 2) so docker compose down doesn't hang on a slow container.
• Dependency bumps -- starlette 1.4.1 -> 1.6.0, uvicorn 0.52.1 -> 0.52.3.
• HUD strip extracted from render() into static/js/hud.js; P1/P2 game state collapsed into shared player objects. Internal refactor, no behavior change.

Security

• uvicorn Server header dropped from HTTP responses to reduce fingerprinting.

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