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  follow-ups and never lets a superseded query replace follow-up memory.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.

src/voice/speechLint.js

@@ -0,0 +1,54 @@
+/**
+ * Spoken-reply lint shared by the turn spans, the unit tests and the QA
+ * harnesses. Pure: no browser or provider dependencies.
+ */
+
+/**
+ * Phrases that add length without adding an answer. Tool numbers are spoken
+ * verbatim, so approximations are hedges too.
+ */
+export const HEDGE_PHRASES = Object.freeze([
+  'keep in mind',
+  "it's worth noting",
+  'it is worth noting',
+  'please note',
+  'note that',
+  'based on the data available',
+  'based on the available data',
+  'i should mention',
+  'as of my',
+  'it seems',
+  'it appears',
+  'approximately',
+  'roughly',
+  'let me think',
+  'let me check',
+  'one moment while',
+  'bear with me',
+  'just to be clear',
+]);
+
+const WORD = /[\p{L}\p{N}][\p{L}\p{N}'’-]*/gu;
+
+/**
+ * Count spoken words in a transcript.
+ * @param {string} text
+ * @returns {number}
+ */
+export function countWords(text) {
+  return String(text || '').match(WORD)?.length || 0;
+}
+
+/**
+ * Return every hedge phrase found in a transcript, in list order.
+ * @param {string} text
+ * @returns {string[]}
+ */
+export function findHedges(text) {
+  const normalized = ` ${String(text || '')
+    .toLowerCase()
+    .replace(/[’]/g, "'")
+    .replace(/[^\p{L}\p{N}' ]+/gu, ' ')
+    .replace(/\s+/g, ' ')} `;
+  return HEDGE_PHRASES.filter((phrase) => normalized.includes(` ${phrase} `));
+}