Imported from jfvorwald/epoch (AGENTS.md). Install upstream with npx skills add jfvorwald/epoch. Copyright stays with the author.

EPOCH browser game

• Use level for a complete mission and wave for an encounter within a level. Use these terms in configuration, new code, menus, HUD, documentation and discussion. A guardian encounter counts as the final wave. Do not call levels sectors; furthestSector is supported only as an old save migration field.
• src/data/config.ts records the terminology, 50 authored story levels, endless continuation, 8–10 total waves per level, and 0–2 randomly selected asteroid waves per level.
• The active browser game is TypeScript/Phaser in src/. The Godot files are a historical prototype; do not apply their old five-level or 100-level assumptions to browser changes.
• Preserve existing player progress when extending the campaign. The end of the authored story must keep a checkpoint for endless levels.
• Follow the parent staging policy and docs/DEPLOYMENT.md: ordinary update/testing requests deploy to private staging; promotion of a specific staged release requires explicit user authorization.