feat(ui): render the CCTV panel's buttons, CAL chip and meta line from a store

CctvControls presents the switch, navigation and toggle buttons, the CAL
chip and the meta line with a pure presentCctvPanel() and publishes them
to the gev-cctv store; CctvPanel renders them. The controls keep their
listeners on the same elements, and still write the picker, frame, source
badge, calibration readout and summary, which carry no bindings.

A page that imports ui/cctv with its own markup no longer has these
elements painted for it, as with Street Level.

src/data/cctv.test.mjs

@@ -1312,10 +1312,6 @@ test('CCTV null-active coverage, auto-hop, cycling, and panel targets stay hones
       // Nothing active clears the pick; only the outside-view note may show.
       /else if \(!activeId\)[\s\S]*?selectedIndex =[^;]*\? 0 : -1;/,
     );
-    assert.match(
-      renderer[0],
-      /_cctvFocusBtn\.disabled\s*=\s*!enabled\s*\|\|\s*catalogCount === 0\s*\|\|\s*!activeId/,
-    );
   } finally {
     cctvLayer.setParams({ autoHop: false });
     _setCctvOverlayHostForTest();