docs(changelog): name S2 GhostMaps fragment after #1297

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

changelog.d/1297-s2-ghostmaps-layer.md

@@ -0,0 +1,7 @@
+- Add the S2 GhostMaps layer: S2 Underground's public KMZ intel products
+  (Common Intelligence Picture, 30-day kinetic pull, Border Crisis Map, Iran
+  and Yemen products and the newest incident drop) from
+  github.com/s2underground/GhostMaps, with one chip per product and report
+  cards on click. `/api/ghostmaps` watches the repository's branch head every
+  15 s and pushes each new commit to open pages, which reload only the
+  products that changed (Black Pine Defense).