feat: Wildlife Sightings layer from iNaturalist and Acartia

Recent community wildlife observations, as a new Wildlife group in the
layer panel.

- Server: keyless iNaturalist proxy (v2 observations with only the
  projected fields; undocumented v1 UTFGrid density tiles, decoded on the
  server) sharing one paced queue (burst 4, ~1/s, 60/min, 8,000/day budget,
  up to four in flight), in-memory caches and upstream-only cooldowns;
  Acartia Salish Sea marine-mammal feed rounded to 0.01 degrees with
  comments dropped.
- Layer: grid counts drawn as a soft view-ranked density glow; real sampled
  sightings as taxon badges at their true positions with ambient photo
  thumbnails and labels; obscured records stay privacy cells; a clicked
  sighting stays pinned through camera moves and refreshes.
- Anchored photo card per selection with the single iNaturalist link;
  attribution in the layer row and the Data attribution popover.
- Filters (CONFIRMED, taxa presets) round-trip in share links with token 9.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

scripts/format-scope.json

@@ -1268,5 +1268,89 @@
   "src/voice/geminiTextChat.js",
   "src/voice/panelLayout.js",
   "src/voice/textChat.js",
-  "src/voice/textProtocol.js"
+  "src/voice/textProtocol.js",
+  "src/app/sourceComposition.js",
+  "src/app/sourceComposition.test.mjs",
+  "src/data/dataCredits.js",
+  "src/data/layerState.js",
+  "src/data/layerState.test.mjs",
+  "src/data/spriteOrder.js",
+  "src/i18n/locales/ar.json",
+  "src/i18n/locales/de.json",
+  "src/i18n/locales/es.json",
+  "src/i18n/locales/fr.json",
+  "src/i18n/locales/it.json",
+  "src/i18n/locales/ja.json",
+  "src/i18n/locales/pt.json",
+  "src/i18n/locales/ru.json",
+  "src/i18n/locales/uk.json",
+  "src/i18n/locales/zh-CN.json",
+  "src/i18n/locales/zh-Hant.json",
+  "src/i18n/same-as-english.json",
+  "src/navigationPolicy.js",
+  "src/overlays/worldOverlayDraw.js",
+  "src/overlays/worldOverlayDraw.test.mjs",
+  "src/sources/rateLimit.js",
+  "src/ui/layerNames.js",
+  "src/ui/styles/cyber.css",
+  "src/voice/layerManifest.js",
+  "src/worldFocus.js",
+  "src/worldFocus.test.mjs",
+  "server/providers/acartia.js",
+  "server/providers/acartia.test.mjs",
+  "server/providers/common/userAgent.js",
+  "server/providers/inaturalist/client.js",
+  "server/providers/inaturalist/observations.js",
+  "server/providers/inaturalist/observations.test.mjs",
+  "src/app/layers/wildlifeSightings.js",
+  "src/layers/wildlifeSightings/cards.js",
+  "src/layers/wildlifeSightings/cards.test.mjs",
+  "src/layers/wildlifeSightings/controls.js",
+  "src/layers/wildlifeSightings/docs.test.mjs",
+  "src/layers/wildlifeSightings/index.js",
+  "src/layers/wildlifeSightings/lifecycle.js",
+  "src/layers/wildlifeSightings/model.js",
+  "src/layers/wildlifeSightings/model.test.mjs",
+  "src/layers/wildlifeSightings/ownership.test.mjs",
+  "src/layers/wildlifeSightings/photos.js",
+  "src/layers/wildlifeSightings/photos.test.mjs",
+  "src/layers/wildlifeSightings/policy.js",
+  "src/layers/wildlifeSightings/records.js",
+  "src/layers/wildlifeSightings/records.test.mjs",
+  "src/layers/wildlifeSightings/rendering.js",
+  "src/layers/wildlifeSightings/selection.js",
+  "src/layers/wildlifeSightings/source.js",
+  "src/layers/wildlifeSightings/source.test.mjs",
+  "src/layers/wildlifeSightings/viewport.js",
+  "src/layers/wildlifeSightings/viewport.test.mjs",
+  "src/sources/rateLimit.test.mjs",
+  "src/layers/wildlifeSightings/bounds.js",
+  "src/layers/wildlifeSightings/acartiaTaxa.js",
+  "src/layers/wildlifeSightings/acquisition.test.mjs",
+  "server/providers/inaturalist/client.test.mjs",
+  "src/layers/wildlifeSightings/acartiaTaxa.test.mjs",
+  "src/ui/wildlifeSightingCard.test.mjs",
+  "src/overlays/wildlifeSightingOverlay.test.mjs",
+  "scripts/run-perf-tests.mjs",
+  "src/perfTestRunner.test.mjs",
+  "src/testSupport/wildlifeBillboardModel.mjs",
+  "src/layers/wildlifeSightings/gridViewport.test.mjs",
+  "src/layers/wildlifeSightings/rendering.test.mjs",
+  "src/layers/wildlifeSightings/sprites.test.mjs",
+  "src/layers/wildlifeSightings/performance.test.mjs",
+  "src/layers/wildlifeSightings/model.perf.test.mjs",
+  "src/ui/wildlifeSightingPlacement.js",
+  "server/providers/inaturalist/queue.js",
+  "server/providers/inaturalist/queue.test.mjs",
+  "server/providers/inaturalist/grid.js",
+  "server/providers/inaturalist/grid.test.mjs",
+  "server/providers/inaturalist/grid.fixture.mjs",
+  "src/layers/wildlifeSightings/performance.js",
+  "src/layers/wildlifeSightings/renderPerformanceFixtures.mjs",
+  "server/providers/inaturalist/speed.test.mjs",
+  "src/layers/wildlifeSightings/render.perf.test.mjs",
+  "src/layers/wildlifeSightings/cache.integration.test.mjs",
+  "src/layers/wildlifeSightings/density.test.mjs",
+  "src/layers/wildlifeSightings/selection.test.mjs",
+  "server/providers/inaturalist/proxy.fixture.mjs"
 ]