feat(layers): Recent Imagery — open satellite imagery for a selected box (#716)

Select a box on the world and browse the last 30 days of open satellite imagery over it, keyless: NASA GIBS Harmonized Landsat Sentinel-2 (30 m) and the VIIRS daily overview (250 m), with a day strip, IMAGE / VS BASEMAP / A / B modes with a swipe divider, PNG export and share links. The before/after swipe from the Nepal scene moves into shared modules so both use it.

Co-authored-by: manjunath22466 <[email protected]>

src/sharelink.celestial.test.mjs

@@ -138,6 +138,35 @@ test('visual parameters, explicit empty layers, and panel state are v2-only', ()
   assert.equal(legacy.panelState, null);
 });
 
+// The panel chrome shares every rail panel, so the link registry must know
+// each one: a collapsed Recent Imagery panel used to restore expanded because
+// the encoder had no token for it.
+test('a collapsed Recent Imagery panel survives the share-link round trip beside the older panels', () => {
+  const manager = makeManager();
+  manager.setPanelStateProvider(() => ({ specs: [
+    { id: 'cctv-panel', collapsed: false },
+    { id: 'recent-imagery-panel', collapsed: true },
+    { id: 'global-context-panel', collapsed: true },
+  ] }));
+  clearTimeout(manager._debounceTimer);
+  manager._updateHash();
+  const params = new URLSearchParams(window.location.hash.slice(1));
+  assert.equal(params.get('ui'), 'v.c.0_i.c.1_g.c.1');
+  const restored = makeManager(`#v=2&lat=10&lon=20&ui=${params.get('ui')}`)
+    .parseInitialHash();
+  assert.deepEqual(restored.panelState, { specs: [
+    { id: 'cctv-panel', collapsed: false, pinned: null },
+    { id: 'recent-imagery-panel', collapsed: true, pinned: null },
+    { id: 'global-context-panel', collapsed: true, pinned: null },
+  ] });
+  // A link written before the token existed decodes exactly as it did.
+  const older = makeManager('#v=2&lat=10&lon=20&ui=v.c.1_g.c.0').parseInitialHash();
+  assert.deepEqual(older.panelState, { specs: [
+    { id: 'cctv-panel', collapsed: true, pinned: null },
+    { id: 'global-context-panel', collapsed: false, pinned: null },
+  ] });
+});
+
 test('camera-only, partial, and malformed panel shares remain valid incoming state', () => {
   const cameraOnly = makeManager('#lat=10&lon=20').parseInitialHash();
   assert.ok(cameraOnly);