fix: the TAR probe view auto-selects the preset; the keyset selectors refresh (v3.8.0)

Two selector bugs in the new TAR-probe view and one stale-list bug in the RAM
view, all from the lazy population of the view-specific preset selects:

- cardsAutoSelectByIccid() set sp-card-sel and ram-card-sel only, so the TAR
  probe view never got the equipped card's preset (and tarExecute() then ran
  with preset_id: '', i.e. without persisting the counters it consumed);
- tarRender()'s keep-fallback was -1 instead of the remembered _ramCardIdx, so
  the select stayed on "— Select card —" even when the auto-selection had
  remembered the preset; the TAR pill switch now also calls tarRender();
- the keyset selectors showed a stale "N — not defined in the preset":
  spKeysetSync() runs during the auto-selection, when ram/tar-card-sel have no
  options yet, so those lists were built with no preset; ramRender() now
  rebuilds them (spKeysetSync) once its preset is known - tarRender() already
  did.

Tests: the auto-select covers tar-card-sel; a DOM-driven regression test
(ramRender with a remembered preset and a two-keyset preset must show
value="2" selected and no "not defined" entry); source guards for ramRender's
sync, tarRender's keep and the TAR pill switch.  sw cache simple-v339.

frontend/tests/keysets.test.js

@@ -23,7 +23,8 @@ function extractFunc(src, name) {
 
 let code = '';
 for (const fn of ['spKeysetKvnOf', 'spKeysetList', 'spKeysetFor', 'spKeysetCheck',
-	'spKeysetOptionsHtml', 'spCounterTracked', 'esc', 'escHtml']) {
+	'spKeysetOptionsHtml', 'spCounterTracked', 'spPresetIdx', 'ramPresetIdx',
+	'tarPresetIdx', 'spKeysetSync', 'ramRender', 'esc', 'escHtml']) {
 	code += extractFunc(html, fn) + '\n';
 }
 code += 'function t(s){return s;}\n';
@@ -131,3 +132,46 @@ test('spCounterTracked follows SPI1 b5b4 (TS 102 225 5.1.1)', () => {
 	}
 	assert.strictEqual(spCounterTracked('zz'), false);
 });
+
+test('ramRender rebuilds the keyset selector from the remembered preset', () => {
+	// regression: the auto-selection runs before the RAM select has options, so
+	// its keyset list was built with no preset and stayed on "not defined"
+	const els = {
+		'ram-card-sel': { value: '', innerHTML: '', appendChild() {} },
+		'ram-keyset-sel': { value: '', innerHTML: '' },
+		'sp-keyset-sel': { value: '', innerHTML: '' },
+		'tar-keyset-sel': { value: '', innerHTML: '' },
+		'sp-kic-hex': { value: '25' },
+		'sp-kid-hex': { value: '25' },
+	};
+	globalThis.document = {
+		getElementById: id => els[id] || null,
+		createElement: () => ({ value: '', textContent: '' }),
+	};
+	globalThis.cards = [{ name: 'EP', keysets: [
+		{ kic: '15', kid: '15', kicKey: 'AA', kidKey: 'BB', cntr: '0000000001' },
+		{ kic: '25', kid: '25', kicKey: 'CC', kidKey: 'DD', cntr: '0000000184' }] }];
+	globalThis._ramCardIdx = 0;
+	globalThis.ramOpChanged = () => {};
+	globalThis.ramExpandedDetailsInit = () => {};
+	ramRender();
+	assert.strictEqual(els['ram-card-sel'].value, '0',
+		'the preset select keeps the remembered card');
+	assert.match(els['ram-keyset-sel'].innerHTML, /value="2" selected/);
+	assert.ok(!els['ram-keyset-sel'].innerHTML.includes('not defined'),
+		'the keyset selector must not show a stale "not defined" entry');
+});
+
+test('the RAM and TAR views rebuild their keyset lists when their preset is known', () => {
+	// ramRender() syncs the keyset selectors once the preset is set ...
+	const ram = html.slice(html.indexOf('function ramRender()'),
+		html.indexOf('function ramRender()') + 1400);
+	assert.ok(ram.includes('spKeysetSync();'), 'ramRender must rebuild the keyset lists');
+	// ... tarRender() already does, and keeps the remembered selection
+	const tar = html.slice(html.indexOf('function tarRender()'),
+		html.indexOf('function tarRender()') + 1200);
+	assert.ok(tar.includes('spKeysetSync();'));
+	assert.ok(tar.includes(': _ramCardIdx;'), 'tarRender keeps the remembered preset');
+	// opening the TAR pill populates both its selectors
+	assert.ok(html.includes("if (name === 'tar') { tarRender(); tarProbeRender(); }"));
+});