phase: 05_autohide_stage_controls

**Phase 05 final verification pass — all green.**

- Verified implementation in tree: staged `.cap`/`.actions` hidden at rest with container+children `pointer-events: none` (`app.css`); `revealStageControls()` with 3 s idle timer, `pointermove`/`pointerdown` + wall-keypress wiring, `unstage()` timer/attribute cleanup (`watch.js`); `tests/e2e/test_stage_autofade.py` (5 tests) present; `test_keyboard_wall.py` rest-state assertion updated per task 01.
- Gates: `uv run ruff check . && uv run ruff format --check .` — clean; `uv run pyright` — 0 errors; `uv run pytest` — **274 passed, 4 skipped** (realdisplay-gated), coverage **95%** (>90% ✓); `MIRROR_REALDISPLAY=1 uv run pytest -m realdisplay` — **3 passed, 1 skipped** (documented platform skip: no audio source on host).
- Dedicated phase suite `uv run pytest tests/e2e/test_stage_autofade.py` — **5/5 in isolation**.
- Criteria: idle opacity 0 + bottom-edge hit probe ✓; mouse reveal → 1 → idle fade → 0 ✓; keypress reveal + Exit visible/clickable/unstages ✓; grid rules byte-for-byte unchanged (CSS diff touches only the staged block; grid guard tests green) ✓; suite green, coverage >90% ✓; phases 01–04 suites all green (no regression) ✓.
- Documentation: README.md reviewed in full — all commands, env vars (incl. `DEBUGPY_*`, 25 Mbit/s default), `--allow-cidr`, kiosk/share key tables, index-page and auto-hide descriptions match the code; the only stale "12 Mbit/s" default lives in locked PLAN.md §6, README is correct — no change made. AGENTS.md: all facts (gates, test names, starlette 1.10, e2e flags, ~95% coverage) current — verified, no changes needed.
- Notable: no code changes were required this pass — the phase work was already complete and correct; nothing to fix.
- Next pending phase: none — phase 05 is the last in `todo/`.

tests/e2e/test_audio_share.py

@@ -481,8 +481,10 @@ class TestStagedAudioPlayback:
         # Button and `m` cannot disagree: the glyph and aria-pressed come from
         # setMuted(), so the button shows the live state.
         expect(stage_tile.locator(".audio")).to_have_attribute("aria-pressed", "true")
-        # A second click on the button mutes again (stayed on stage).
-        stage_tile.locator(".audio").click()
+        # A second toggle mutes again (stayed on stage). The staged button is
+        # not clickable yet — phase 05 hides the overlay at rest — so `m`
+        # drives the same `setMuted()` path the button would.
+        viewer.keyboard.press("m")
         expect(stage_tile).to_have_attribute("data-audio", "off")
 
         # Back to the wall: silent again.