i18n(ar): apply review round 1

Findings from the astra, sol and fable reviews of the Arabic screenshots:

- Wording: forecast valid time is «عند», not an expiry; acres are آكر, not
  feddans; live layers are «تتبّع … المباشر» (not "direct flights"); the
  straight-ahead lane, turboprop, call sign, reconcile, proximity, retrying,
  count agreement (colon form, fixed counts, ي for compact day ages) and
  smaller fixes. Guide and glossary updated.
- Right to left: the scene editor's JSON fields are LTR; canvas map cards
  draw with LTR geometry and an Arabic face; whiteboard callouts anchor
  inside their cards; HDG/FOV keep their values; the cyclone timestamp no
  longer splits its date; bare-number counters read 01 / 25, translated
  ones say «من».
- Built-in shot titles of the Nepal shot pack's bootstrap shots localize
  (the applied pack vouches for them), in every language.

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

src/overlays/worldOverlayTokens.js

@@ -7,6 +7,9 @@
  */
 
 /** Shared visual tokens used by every world-overlay source. */
+// Map-card fonts: JetBrains Mono has no Arabic glyphs and the generic
+// monospace fallback is a fixed-pitch Arabic face that stretches every word;
+// Arabic text falls through to Noto Sans Arabic (loaded with the page fonts).
 export const WORLD_OVERLAY_STYLE = Object.freeze({
   background: 'rgba(4, 12, 16, 0.82)',
   selectedBackground: 'rgba(5, 18, 24, 0.94)',
@@ -16,13 +19,13 @@ export const WORLD_OVERLAY_STYLE = Object.freeze({
   detail: 'rgba(147, 161, 173, 0.92)',
   leader: 'rgba(147, 213, 228, 0.58)',
   accent: '#6be8ff',
-  fontLabel: '500 10px "JetBrains Mono", monospace',
-  fontTrack: '600 10px "JetBrains Mono", monospace',
-  fontTitle: '600 12px "JetBrains Mono", monospace',
-  fontDetail: '500 10.5px "JetBrains Mono", monospace',
-  fontSelected: '600 13px "JetBrains Mono", monospace',
-  fontTrackedTitle: '600 13px "JetBrains Mono", monospace',
-  fontTrackedDetail: '500 11px "JetBrains Mono", monospace',
+  fontLabel: '500 10px "JetBrains Mono", "Noto Sans Arabic", monospace',
+  fontTrack: '600 10px "JetBrains Mono", "Noto Sans Arabic", monospace',
+  fontTitle: '600 12px "JetBrains Mono", "Noto Sans Arabic", monospace',
+  fontDetail: '500 10.5px "JetBrains Mono", "Noto Sans Arabic", monospace',
+  fontSelected: '600 13px "JetBrains Mono", "Noto Sans Arabic", monospace',
+  fontTrackedTitle: '600 13px "JetBrains Mono", "Noto Sans Arabic", monospace',
+  fontTrackedDetail: '500 11px "JetBrains Mono", "Noto Sans Arabic", monospace',
   radius: 4,
   anchorDotRadius: 3.2,
   anchorDotStrokeWidth: 1,