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/applicationShell.js

@@ -954,8 +954,7 @@ export class StyleManager extends ShellFacade {
           this.setPanelCollapsed('street-level-panel', collapsed, options),
         dockPanel: () => this._panelChrome.dockPanel('street-level-panel'),
         showToast: (message) => this._showToast(message),
-        // Who asked for Street Level to switch on: only a user, voice or tool
-        // request opens the panel, never a saved-state restore.
+        // Lets the panel open for a user, voice or tool switch-on, not a restore.
         subscribeEnableRequests: (listener) =>
           this._dataManager?.subscribeVisibilityRequests?.((change) => {
             if (change?.layerId === 'street-level' && change.enabled)
@@ -1509,12 +1508,7 @@ export class StyleManager extends ShellFacade {
     this._initCockpitDisplayPortal();
   }
 
-  /**
-   * A portable panel finished a resize or snapped back to its rail. A panel
-   * with a viewport of its own refits here.
-   * @param {string} panelId
-   * @returns {void}
-   */
+  /** A portable panel was resized or docked: refit any viewport inside it. */
   _onPanelResized(panelId) {
     if (panelId === 'cctv-panel') this._syncCctvPanelViewport();
     if (panelId === 'street-level-panel')