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]>

server/standalone/key-setup.js

@@ -134,8 +134,7 @@ function keySetupEndpoint({ sourceRoot = defaultSourceRoot } = {}) {
   };
   // The gate itself is pure and unit-tested (admitKeySetupRequest in
   // src/keySetupCore.mjs) — this just feeds it the request.
-  // A refusal as the panel reads it: `code` (and `params`) pick its localized
-  // sentence in src/keySetup.js; `error` is the English for logs and scripts.
+  // `code`/`params` pick the panel's sentence (src/keySetup.js); `error` is for logs.
   const refusal = ({ error, code, params }) => ({ error, code, params });
   const admit = (req) =>
     admitKeySetupRequest({