fix(street-level): SINCE note on the value's line: ANY DATE (by upload date)

The slim-down in #974 dropped --sl-text-small, which .sl-since-note still
used, so with KartaView lit "KartaView: by upload date" rendered on its
own line larger than the value. The note now sits beside the value in the
same mono type and letter spacing, a size smaller (0.5rem), as
"(by upload date)". One source is lit at a time, so the provider name is
dropped. es/ru catalogs, tests, README, CURRENT-STATE and the registry
JSDoc follow.

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

src/layers/streetLevel/uiState.test.mjs

@@ -67,7 +67,7 @@ test('the filter controls show only for a lit provider that honours them', () =>
   );
 });
 
-test('a lit provider that dates by upload puts a note under SINCE', () => {
+test('a lit provider that dates by upload notes it beside the SINCE value', () => {
   const kartaView = provider({
     id: 'kartaview',
     name: 'KartaView',
@@ -75,7 +75,7 @@ test('a lit provider that dates by upload puts a note under SINCE', () => {
   });
   const note = (providers) => composeUIState({ ...base, providers }).sinceNote;
   assert.equal(note([provider()]), null, 'Mapillary: capture date');
-  assert.equal(note([kartaView]), 'KartaView: by upload date');
+  assert.equal(note([kartaView]), '(by upload date)');
   assert.equal(note([{ ...kartaView, on: false }]), null, 'only while lit');
 });