DotaStreamKit 1.5.6

What's changed

• Split MMR goal overlay positioning into separate menu and in-game controls.
• Existing MMR goal position is migrated once into both new positions so current layouts keep working.
• Overlay now uses the menu position outside live game and the in-game position during PRE_GAME / GAME_IN_PROGRESS.

Checks

• npm run check
• npm run test:streamer-stats
• JS syntax checks for public/app.js, public/overlay.js, src/server.js
• git diff --check
• npm audit --omit=dev
• Windows portable, Windows installer, Linux, and macOS builds
• Windows release exe smoke test: /api/state returned version 1.5.6