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  follow-ups and never lets a superseded query replace follow-up memory.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

scripts/voice-bench/baseline-tools-4b56d0e9.json

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+[{"type":"function","name":"fly_to_location","description":"Fly the God's Eye View camera to a known city, geocoded country/region/city/landmark, or explicit WGS84 coordinate. Countries/cities frame the whole place; landmarks/buildings use close framing.","parameters":{"type":"object","additionalProperties":false,"properties":{"locationId":{"type":"string","enum":["austin","sf","nyc","tokyo","london","paris","dubai","dc"],"description":"Known city preset ID. Use when the requested place matches one of these cities."},"query":{"type":"string","description":"Plain place search query, e.g. \"London\", \"Eiffel Tower\", or \"Dubai Marina\"."},"latitude":{"type":"number","minimum":-90,"maximum":90},"longitude":{"type":"number","minimum":-180,"maximum":180},"viewMode":{"type":"string","enum":["close","overview"],"description":"Optional framing intent. Usually omit this; GEV infers whole-place framing for countries/cities and close framing for landmarks."},"rangeM":{"type":"number","minimum":100,"maximum":20000000,"description":"Optional camera range from the target in meters. Omit it for automatic whole-country/whole-city or close-landmark framing; provide it only when the user explicitly requests a numeric height or distance."},"waitForArrival":{"type":"boolean","description":"Set true when a later tool depends on the destination viewport. The result then waits for the camera flight and returns arrived=true; cancellation returns ok=false."}}}},{"type":"function","name":"select_nearest_aircraft","description":"Atomically fly to a place, wait for arrival, enable and load Flights or Military Flights in that viewport, exclude on-ground records, and select/follow the nearest airborne aircraft. Healthy fallback feeds remain usable and are reported in the result. This does not open Contacts or Cockpit.","parameters":{"type":"object","additionalProperties":false,"properties":{"layerId":{"type":"string","enum":["flights","military"],"description":"Aircraft layer to enable and search. Use flights unless the user explicitly asks for military aircraft."},"locationId":{"type":"string","enum":["austin","sf","nyc","tokyo","london","paris","dubai","dc"],"description":"Known city preset ID when the place matches one of these cities."},"locationQuery":{"type":"string","maxLength":160,"description":"Free-form destination when no locationId matches."},"latitude":{"type":"number","minimum":-90,"maximum":90},"longitude":{"type":"number","minimum":-180,"maximum":180}},"required":["layerId"]}},{"type":"function","name":"adjust_camera_zoom","description":"Move the current Cesium camera closer to or farther from what it is presently looking at. Use for relative zoom requests without changing location.","parameters":{"type":"object","additionalProperties":false,"properties":{"direction":{"type":"string","enum":["in","out"]},"amount":{"type":"string","enum":["little","medium","lot"],"description":"Use little for phrases like \"a bit\" or \"a little\", medium for ordinary zoom requests, and lot for \"way out/in\"."}},"required":["direction","amount"]}},{"type":"function","name":"zoom_to_globe","description":"Pull the camera out to an ABSOLUTE full-Earth globe view (~18,000 km altitude, the whole planet in frame), keeping the current region centered. Use for \"globe view\", \"whole earth\", \"see the planet\", \"zoom all the way out\". Never use adjust_camera_zoom for these — its relative steps cannot reach the globe.","parameters":{"type":"object","additionalProperties":false,"properties":{}}},{"type":"function","name":"set_layer_visibility","description":"Enable or disable one registered God's Eye View data layer.","parameters":{"type":"object","additionalProperties":false,"properties":{"layerId":{"type":"string","description":"Common-name mapping for the non-obvious ids: space mission(s) → rocket-launches; fires/wildfires/active fires → local-firms (NASA FIRMS); ships/vessels/boats → ais-live-vessels; undersea/submarine cables → telegeography-submarine-cables; datacenters → local-datacenters; dams → local-dams; bikes/bike share → bikeshare; street traffic/congestion → traffic; traffic cameras → cctv; internet radio/stations → radio; ALPR/license plate readers/Flock cameras → alpr-cameras; local ADS-B/my receiver/my antenna (aircraft heard by a local RTL-SDR receiver) → local-adsb.","enum":["flights","military","earthquakes","satellites","rocket-launches","traffic","cctv","radio","bikeshare","ais-live-vessels","local-datacenters","local-dams","telegeography-submarine-cables","local-firms","alpr-cameras","local-adsb"]},"enabled":{"type":"boolean"}},"required":["layerId","enabled"]}},{"type":"function","name":"show_data_layers_menu","description":"Open the data layers dropdown/menu and optionally scroll to a specific layer row without toggling it.","parameters":{"type":"object","additionalProperties":false,"properties":{"layerId":{"type":"string","enum":["flights","military","earthquakes","satellites","traffic","ccLine truncated