i18n: fix the LGTM review findings and tidy the branch texts

- i18n scanner: lastError sink, no false sinks on defaults and ternaries
- shared src/i18n/marker.js for modules that only mark strings
- wind field messages move to wind/fields.js; CITY_POIS imports from cityPois.js
- drop review IDs, change history and stale references from comments and docs

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

src/ui/styles/street-level.css

@@ -216,8 +216,7 @@ button.sl-status:focus-visible {
   display: none;
 }
 
-/* Longer translations: rather than squeeze the hint into a narrow column
-   beside the button, put the button on its own line when both do not fit. */
+/* When the hint and the button do not both fit, the button takes its own line. */
 html:not([lang='en']) .sl-meta-row {
   flex-wrap: wrap;
 }