docs(street-level): shorten docs and comments before merge

Trim the doc text this PR adds (README, CHANGELOG, CURRENT-STATE,
KNOWN-ISSUES, SECURITY, DATA_SOURCES, .env.example, the CI job comment),
drop code comments that restate the code, cut design-note JSDoc to a line
or two, and drop review tags from test names. Comments only; no code
changes.

Also: README key count (seven keys, two metered), CURRENT-STATE's gate
paragraph (CI runs a production build with a dummy token), the stacked
doc above meshBoxInRange and the orphaned inMeshRange line in
coverage.js, and a duplicate ALPR row in DATA_SOURCES that a merge had
brought back.

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

src/layers/streetLevel/glyphs.js

@@ -1,8 +1,4 @@
-/**
- * Canvas glyphs for billboards: a camera cone for images, a ring for
- * panoramas and a position marker for the street-level viewer. Pure canvas
- * drawing so it can run without Cesium.
- */
+/** Canvas billboard glyphs (image cone, pano ring, position marker); no Cesium needed. */
 
 const _cache = new Map();
 
@@ -29,7 +25,6 @@ function wedge(ctx, c, radius, halfAngle, color, alpha) {
   ctx.globalAlpha = 1;
 }
 
-/** A stroked circle around the centre. */
 function ring(ctx, c, radius, color, width, alpha) {
   ctx.beginPath();
   ctx.arc(c, c, radius, 0, Math.PI * 2);
@@ -40,7 +35,6 @@ function ring(ctx, c, radius, color, width, alpha) {
   ctx.globalAlpha = 1;
 }
 
-/** A filled dot at the centre with a dark outline. */
 function dot(ctx, c, radius, color, outline, width) {
   ctx.beginPath();
   ctx.arc(c, c, radius, 0, Math.PI * 2);
@@ -71,7 +65,7 @@ export function imageConeGlyph({
   });
 }
 
-/** Pulsing-looking marker for the image the viewer currently shows. */
+/** Marker for the image the viewer currently shows. */
 export function positionMarkerGlyph({ size = 44, color = '#ffb300' } = {}) {
   return cachedGlyph(`pos:${size}:${color}`, size, (ctx, c) => {
     wedge(ctx, c, size * 0.48, 0.55, color, 0.55);