# js/app/ — agents.md
RC-375D84 S-2. Module map: `MODULES.md`; runtime model: `architecture.md`.

Self-contained module — the page. Owns DOM, input, screens and the main loop.

- Reads `window.ISLE_CORE`, `ISLE_LEVELS`, `ISLE_RENDERER`, `ISLE_AUDIO`; writes
  `window.ISLE_PAGE = { getState }` for tests.
- Fixed-timestep loop: rAF accumulator at 1/120 s feeding `ISLE_CORE.step`;
  `pumpFrames` in the page test drives it.
- Pointer model: mousedown near the sling arms aim, mousemove drags, mouseup
  calls `ISLE_CORE.launch` with `aimVector(...)`; tap mid-flight =
  `triggerAbility`. The direction test (bug #15) asserts pulling back launches
  TOWARD the fort.
- Screens: start / level-select / pause / win / lose; HUD (level, birds, score,
  pause, mute). Level select unlocks by localStorage progress.
- Keep DOM touches in this file only — physics/levels/audio/render must stay
  DOM-free so the headless suites keep working.