Merge upstream/main (KartaView #1121 merged) into pr/panoramax

KartaView's later viewer changes are carried into the shared
photoViewer.js: the camera bearing (`bearingOf`), redrawing the same
photo after a GPU reset through `onReopen`, no pose while a lost context
recovers, the 2,560 px flat version only once the viewer outgrows
1,280 px, `refreshPose`, and one sharper-panorama load at a time with a
second look once it lands. Its tile cache's `keyOf` and `clear` move to
the shared tileCache.js. KartaView gets `onEscape` beside `onReopen`.

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

src/layers/streetLevel/lineCoverage.js

@@ -888,6 +888,15 @@ export function createLineCoverage({
     notify();
   }
 
+  /**
+   * Load every tile again (a source that filters on its server had its
+   * filter changed); the lines drawn now show until the new ones are in.
+   */
+  function reload() {
+    retire();
+    refresh();
+  }
+
   /**
    * Redraw tiles draped or cast for the new surface mode, then re-pick the
    * zoom, since the ground height under the camera may have changed.
@@ -1018,6 +1027,7 @@ export function createLineCoverage({
     clear,
     resetErrors,
     rebuild,
+    reload,
     setSurface,
     recolorSequence,
     sequenceCount,