Tighten review panel; add battery and dashboard indicators; Type sends Enter when idle

- Drop the fixed 'Type adds a space' hint; a Bindings failure note now
  replaces the page count instead.
- Grow the transcript card to six lines, closing the empty band above the
  footer; move pagination down.
- Header: right-aligned clock/date, L/HMD/R battery readouts from OpenVR
  battery properties (headset falls back to the Linux system battery);
  missing readings are hidden.
- Status line chip shows Buttons ready/paused from IsDashboardVisible().
- Type (A or button) with nothing to review queues Enter alone; the button
  is labelled Enter in that state.

Offline and native x86-64 builds pass; not yet deployed to Frame.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -27,7 +27,7 @@ sh install.sh --mode binary --archive /path/to/frameyap-VERSION-linux-aarch64.ta
 | --- | --- |
 | Right X, hold / release | Record while held; release to transcribe. |
 | Right B | Cancel/discard, or close the Quick phrases picker. |
-| Right A | **Type:** queue reviewed text, normally with a trailing space. |
+| Right A | **Type:** queue reviewed text, normally with a trailing space. With nothing to review, a press queues Enter alone (so a quick double press types then submits). |
 | Right Y | Open **Quick phrases**; press again to cycle the selection. |
 | Left grip, double-tap | **Type + Enter:** queue the selected phrase verbatim + Enter, pending review (normally + space) then Enter, or Enter alone if neither exists. |
 | Overlay Record / Stop | Click-to-start/stop alternative to the PTT binding. |