Fix anchor positions getting corrupted by fullscreen mode

Skip persisting minimap/toolbar anchor data while in fullscreen so
dragging during fullscreen doesn't overwrite normal-mode offsets.
ResizeObserver now just clamps during fullscreen instead of
re-applying normal-mode anchors to the fullscreen-sized container.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/js/features/graph-editor.js

@@ -100,9 +100,18 @@ function _applyAnchor(el, container, saved) {
     el.style.left = l + 'px';
     el.style.top = t + 'px';
 }
-/** Shorthand wrappers for minimap / toolbar. */
+/** True when the graph container is in fullscreen — suppress anchor persistence. */
-function _saveMinimapAnchored(el, container) { return _saveAnchored(el, container, _saveMinimapRect); }
+function _isFullscreen() { return !!document.fullscreenElement; }
-function _saveToolbarAnchored(el, container) { return _saveAnchored(el, container, _saveToolbarPos); }
+
+/** Shorthand wrappers for minimap / toolbar (skip save in fullscreen). */
+function _saveMinimapAnchored(el, container) {
+    if (_isFullscreen()) return;
+    return _saveAnchored(el, container, _saveMinimapRect);
+}
+function _saveToolbarAnchored(el, container) {
+    if (_isFullscreen()) return;
+    return _saveAnchored(el, container, _saveToolbarPos);
+}
 
 // Toolbar position persisted in localStorage
 const _TB_KEY = 'graph_toolbar';
@@ -867,9 +876,14 @@ let _resizeObserver = null;
 function _initResizeClamp(container) {
     if (_resizeObserver) _resizeObserver.disconnect();
     _resizeObserver = new ResizeObserver(() => {
+        // In fullscreen, just clamp — don't re-anchor from normal-mode saved data
+        const fs = _isFullscreen();
         const mm = container.querySelector('.graph-minimap');
         const tb = container.querySelector('.graph-toolbar');
         if (mm) {
+            if (fs) {
+                _clampElementInContainer(mm, container);
+            } else {
                 const saved = _loadMinimapRect();
                 if (saved?.anchor) {
                     _applyAnchor(mm, container, saved);
@@ -877,7 +891,11 @@ function _initResizeClamp(container) {
                     _clampElementInContainer(mm, container);
                 }
             }
+        }
         if (tb) {
+            if (fs) {
+                _clampElementInContainer(tb, container);
+            } else {
                 const saved = _loadToolbarPos();
                 if (saved?.anchor) {
                     _applyAnchor(tb, container, saved);
@@ -885,6 +903,7 @@ function _initResizeClamp(container) {
                     _clampElementInContainer(tb, container);
                 }
             }
+        }
     });
     _resizeObserver.observe(container);
 }