feat(ui): render the CCTV camera picker from the store

The picker's options are data: CctvControls computes the cameras in view
and the closing note for those left out, keeps a focused picker's list and
prepends a camera activated under it, and publishes the options, disabled
state and selection. CctvPicker renders them keyed by camera id and
applies the selection once the options are in place; it updates only when
the controls publish, as the old picker did on layer notifications. A
picker about to be disabled no longer counts as focused.

This completes the CCTV panel: everything it shows is rendered from the
gev-cctv store.

src/data/cctv.test.mjs

@@ -25,9 +25,6 @@ function componentFunctionSource(fn) {
     .replace(/\(\s+/g, '(');
 }
 import assert from 'node:assert/strict';
-import fs from 'node:fs';
-import path from 'node:path';
-import { fileURLToPath } from 'node:url';
 import * as Cesium from 'cesium';
 import cctvLayer, {
   CCTV_PROJECTION_OVERLAY_SOURCE_OPTIONS,
@@ -83,16 +80,6 @@ import {
   LIVE_CAMERA_COLOR,
 } from '../layers/cctv/policy.js';
 
-const CCTV_PRESENTATION_SOURCE = fs.readFileSync(
-  path.join(
-    path.dirname(fileURLToPath(import.meta.url)),
-    '..',
-    'ui',
-    'cctvPresentation.js',
-  ),
-  'utf8',
-);
-
 const ASPECT = 16 / 9;
 const toRad = (deg) => (deg * Math.PI) / 180;
 const GESTURE_TYPES = {
@@ -1302,16 +1289,6 @@ test('CCTV null-active coverage, auto-hop, cycling, and panel targets stay hones
     assert.equal(cctvCycleIndex(-1, -1, records.length), records.length - 1);
     assert.equal(cctvCycleIndex(2, 1, records.length), 0);
     assert.equal(cctvCycleIndex(0, -1, records.length), records.length - 1);
-
-    const renderer = CCTV_PRESENTATION_SOURCE.match(
-      /_renderCctvState\(state\) \{[\s\S]*?\n\}\n/,
-    );
-    assert.ok(renderer, '_renderCctvState is missing');
-    assert.match(
-      renderer[0],
-      // Nothing active clears the pick; only the outside-view note may show.
-      /else if \(!activeId\)[\s\S]*?selectedIndex =[^;]*\? 0 : -1;/,
-    );
   } finally {
     cctvLayer.setParams({ autoHop: false });
     _setCctvOverlayHostForTest();