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/ui/streetLevelPresentation.js

@@ -225,6 +225,7 @@ export function presentStreetLevelPanel(state, { now = Date.now() } = {}) {
       since: state.filterControls?.since !== false,
     },
     since: presentSince(filter.sinceDays, now),
+    sinceNote: state.sinceNote || null,
     legend: state.legend || [],
     viewer: presentViewer(state),
     meta: presentMeta(state),