docs(street-level): drop stale provider and stepping wording; the gate fails when it cannot park

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

CONTRIBUTING.md

@@ -66,8 +66,9 @@ gate for the feature you changed.
 > **CI does not cover this for you.** The workflow runs the setup policy
 > checks, the formatting and package-boundary checks, the unit suite and the
 > production build, plus a Windows onboarding job. It runs neither
-> `npm run test:track` nor any `qa-*.mjs` gate — both need a live dev server
+> `npm run test:track` nor any other `qa-*.mjs` gate — both need a live dev
-> and a browser. Include the applicable local run in your PR's validation
+> server and a browser. The one exception is the hermetic Street Level fixture
+> gate (`street-level-browser` job). Include the applicable local run in your PR's validation
 > evidence.
 
 ## Share-link layer tokens

docs/CURRENT-STATE.md

@@ -3032,8 +3032,7 @@ Like the iD editor's photo overlay it shows Mapillary only: 360°/flat and
 captured-since filters (relative days, so a link keeps its meaning), one
 embedded viewer and an on-globe credit while the layer is on. Share options:
 `m` (Mapillary on/off; off draws nothing), `p` (`a`/`p`/`f` panoramas), `s`
-(since, days). The header pill is the only layer switch and also turns a
+(since, days). The header pill is the only layer switch.
-switched-off `m` back on.
 
 Coverage is z11–14 sequence lines below 60 km; above that nothing is drawn and
 the panel says to zoom in. Tiles come from the visible ground within range of
@@ -3066,8 +3065,10 @@ so the whole photo fits.
 Browser gates: `npm run qa:street-level -- --url <server>` runs against real
 Mapillary with a token; `npm run qa:street-level:fixtures` answers every
 Mapillary request from fixtures (`providers/mapillary/coverageFixture.mjs`,
-`scripts/fixtures/street-level/`). CI runs the fixture gate with `--strict`
+`scripts/fixtures/street-level/`); its server (default `:4173`) still needs a
-against a production build served by `vite preview` with a dummy token.
+`MAPILLARY_CLIENT_TOKEN`, and any value will do. CI runs the fixture gate with
+`--strict` against a production build served by `vite preview` with a dummy
+token.
 
 Directions is a keyless front end to the routing the voice agent already
 uses. Its row chips are the whole interface: DRIVE / WALK / BIKE pick the

scripts/fixtures/street-level/mapillaryGraph.mjs

@@ -2,8 +2,8 @@ import { readFileSync } from 'node:fs';
 
 /**
  * Mapillary Graph API and image CDN answered from fixtures, covering every
- * request the provider and MapillaryJS make while opening, stepping and
+ * request the provider and MapillaryJS make while opening and closing a
- * closing a photo, so the gate needs no network and no real token.
+ * photo, so the gate needs no network and no real token.
  *
  * No `merge_cc` or `sfm_cluster` means MapillaryJS never asks for a mesh or
  * cluster, and empty S2 cells mean no spatial edges, which the gate does not

scripts/qa-street-level.mjs

@@ -319,6 +319,7 @@ async function park(page) {
     }, PARK);
     if (stayed) return;
   }
+  throw new Error('the camera would not stay parked over the photo line');
 }
 
 async function main() {

src/data/layerState.js

@@ -411,7 +411,7 @@ const OPTION_GROUPS = Object.freeze({
     booleanOption('viirs', 'v', false),
   ]),
   'street-level': Object.freeze([
-    // One switch per registered imagery provider (src/app/layers/streetLevel.js).
+    // The Mapillary switch: off, the layer draws nothing.
     booleanOption('mapillary', 'm', true),
     enumOption('pano', 'p', 'all', ['all', 'pano', 'flat'], {
       all: 'a',