fix(map): move fullscreen button outside feed-map div, top-right corner

MapLibre's attribution button occupies bottom-right of the container.
Moving our button out of the map div avoids MapLibre's DOM entirely,
and top-right is clear of all default MapLibre controls.
Position anchor moves to feed-map-wrap (position:relative).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Vgmzx8VTTTmCskSpQtsLTr

themes/intotheeast/css/style.css

@@ -645,6 +645,7 @@ body::after {
 /* ── Mini-map on tracker feed ────────────────────────────────────────────────── */
 
 .feed-map-wrap {
+    position: relative;
     margin-bottom: var(--space-10);
     border-radius: var(--radius-md);
     overflow: hidden;
@@ -653,7 +654,6 @@ body::after {
 }
 
 .feed-map {
-    position: relative;
     height: 240px;
     width: 100%;
 }
@@ -664,7 +664,7 @@ body::after {
 
 .feed-map-fullscreen-btn {
     position: absolute;
-    bottom: var(--space-2);
+    top: var(--space-2);
     right: var(--space-2);
     width: 2rem;
     height: 2rem;