mwg v0.7.3

Highlights\n\n- Added hex-map parity for targeting, cones, area resolution, minimaps, markers, automap validation, and multi-turn beams.\n- Added the multi-turn beam example with blockers, moving targets, per-turn damage, and saveable action state.\n- Updated API and reference documentation with topology-aware map capabilities.\n\n## Verification\n\n- 1454 tests pass.\n- Typecheck, formatting, API report, audit, production build, bundle budget, and package smoke pass.\n- npm package and standalone file:// smoke paths both reach WebGL game-ready pages.