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/i18n/locales/es.json

@@ -945,7 +945,7 @@
   "Image by {creator}": "Imagen de {creator}",
   "zoom in to see KartaView coverage": "acércate para ver la cobertura de KartaView",
   "no KartaView photos in view": "no hay fotos de KartaView a la vista",
-  "{names}: by upload date": "{names}: por fecha de subida",
+  "(by upload date)": "(por fecha de subida)",
   "{n} streets in view · click a line for its nearest photo": {
     "one": "{n} calle a la vista · haz clic en una línea para su foto más cercana",
     "many": "{n} calles a la vista · haz clic en una línea para su foto más cercana",