feat(voice): voice core — honest layer reach, spoken summary with on-screen card, narration, point-and-ask

- Voice layer manifest (src/voice/layerManifest.js) generates the layer enums,
  aliases and analyst field hints; a test fails when a catalog layer has no entry.
- analyst_query validates fields, operators, units, values and scopes, counts up
  to 250,000 loaded records per layer, reports complete/partial/unanswered, tells
  LAYER_OFF / NOT_READY / FEED_UNAVAILABLE apart from zero, refuses mismatched
  follow-ups and never lets a superseded query replace follow-up memory. Seven
  more layers expose analyst records.
- Tool results carry a code-built say line and a display card; the voice card in
  the mic control shows captions, plan steps and the result
  (src/voice/resultDisplay.js is the one adapter). Slow tools narrate their
  current step out of band; holding Space while the assistant talks cuts it off.
  Turn spans go to the debug log; caption transcription is metered; the log
  omits what was said unless GEV_VOICE_LOG_CONTENT=1.
- Point and ask: the Space-down pointer snapshot resolves "this", "that one" and
  "around here" through 'pointer' targets, and "the second one" through
  referent:n from the last numbered list.
- Prompt states each policy once (instructions + tools 48.5k -> 46.7k chars).
- Voice benchmark harness (scripts/qa-voice-bench.mjs, scripts/voice-bench/)
  shares its phrase table and grading with scripts/qa-voice-routing.mjs.

docs/VOICE-OWNERSHIP.md

@@ -14,6 +14,12 @@ The session adapter, action runner and backend interfaces remain unchanged.
 | `realtimeCost.js` | Next-session preferences and the current session's model-bound meter |
 | `realtimeViewport.js` | One retained image, bounded deletion identities and capture generation |
 | `realtimeDiagnostics.js` | Bounded error history and sanitized optional diagnostics |
+| `turnMetrics.js` | Per-turn latency and speech spans written to the debug log |
+| `narration.js` | Progress lines and the earcon while tools run; spoken through the turns owner |
+| `pointerContext.js` | Pointer position, dwell pick and the current turn's pointer snapshot (session-scoped) |
+| `referents.js` | Numbered items from the latest result for `referent:n` (session-scoped) |
+| `resultDisplay.js` | What the voice card shows for a result and which items it numbers (read by the card and `referents.js`) |
+| `gevActions.js` runner | Analyst follow-up memory (session: `resetConversation()` on stop, `dispose()` on removal) |
 
 Pure input policy, preferences and protocol-response policy have separate modules.
 Owners receive named readers, operations or focused collaborators. Cross-owner
@@ -29,7 +35,7 @@ Action and post-capture continuations retain their conversation identity before
 publishing output, queueing a response or changing status.
 
 Behavioral invariants remain in force: a 500 ms Space hold claims push-to-talk;
-short control taps and text entry remain native; a click-started session stays
+short control taps and text entry remain native; a claimed hold while the assistant speaks interrupts it (never during a Radio handoff); a click-started session stays
 open-mic. Every accepted or refused tool call receives its terminal output once.
 New typed input supersedes old intent. Radio waits for the spoken confirmation and
 verified muted playback. A live cost meter stays bound to its negotiated model,