feat(rust): eight more minor map labels start hidden (D213)

Read from the Carbon rig regenerated at world 6000, seed 981448696, whose map
carries every built-in label: the three that were unverified (Oxum's Gas
Station, Mining Outpost, Ranch) are spelled as written. Adds Canyon B/C,
Lake A, Oasis A/C, Mountain, Train Tunnel Link and Abandoned Cabins, and a
test over that map's 51 real labels.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E14m6SuuY6i1vASFeGDBeY

server/model/map/map.model.js

@@ -75,9 +75,10 @@ const MARKER_PREFIX = 'map.marker.'
 const MARKER_KEY_MAX = 64 - MARKER_PREFIX.length
 
 /**
- * The labels off unless an admin turns them on. All but the last three are as
- * the rigs' map (world 3000, seed 1234) labels them; the gas station, mining
- * outpost and ranch are not on that map, and are Rust's display names for them.
+ * The labels off unless an admin turns them on, spelled as the game labels
+ * them: all were read from the Carbon rig's 6000 map, seed 981448696, which has
+ * every one (2026-09-29). The game writes "Jungle ruin" there and "Jungle Ruin"
+ * on a 3000 map; the key is lower case, so both match.
  */
 const MINOR_LABELS = Object.freeze([
   'Substation',
@@ -94,6 +95,15 @@ const MINOR_LABELS = Object.freeze([
   "Oxum's Gas Station",
   'Mining Outpost',
   'Ranch',
+  // D213: found on the 6000 map, hidden at the org lead's word.
+  'Canyon B',
+  'Canyon C',
+  'Lake A',
+  'Oasis A',
+  'Oasis C',
+  'Mountain',
+  'Train Tunnel Link',
+  'Abandoned Cabins',
 ])
 
 /** A label as its switch's key: trimmed, single-spaced, lower case. */