ECHO Launcher v1.0.2

Summary

• Refactors the launcher around the ECHO Catalog / Release Index as the normal install and update source.
• Reworks Home into a player-first launch cockpit with selected-pack routing and one smart primary action.
• Removes the built-in Publisher surface and legacy player-facing GitHub release-feed settings.
• Reorganizes launcher navigation into Home, Library, Community, Tools, and Settings.

Validation

• npx.cmd tsc --noEmit
• npm.cmd run test
• npm.cmd run test:e2e:release-index
• npm.cmd run build
• Browser smoke test on /?launcher-preview