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/ui/panelDock.test.mjs

@@ -377,10 +377,9 @@ test('a header press that travels under the drag threshold is a click, not a lif
 });
 
 /**
- * Both portable panels wired through _initPanelDrag. Each box follows its
- * inline left/top/width/height like a fixed window (`box` holds the natural
- * size), its header is the top 36 px, and `obstacles` stand in for the
- * command dock and voice pill. ResizeObserver callbacks run on `observe()`.
+ * Both portable panels wired through _initPanelDrag. Headers are the top
+ * 36 px; `obstacles` stand in for the command dock and voice pill.
+ * ResizeObserver callbacks run on `observe()`.
  */
 function portableShell(f, { stored = {}, box = {}, obstacles = {} } = {}) {
   const observers = [];