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/cards_iccid.test.js

@@ -34,7 +34,8 @@ const RAW_HEX = '980711090000640090F8';
 const DIGITS = '8970119000004600098';
 
 function fakeDoc() {
-	const els = { 'sp-card-sel': { value: '' }, 'ram-card-sel': { value: '' }, 'cards-iccid': { value: '' } };
+	const els = { 'sp-card-sel': { value: '' }, 'ram-card-sel': { value: '' },
+		'tar-card-sel': { value: '' }, 'cards-iccid': { value: '' } };
 	globalThis.document = { getElementById: id => els[id] || null };
 	return els;
 }
@@ -78,6 +79,8 @@ test('cardsAutoSelectByIccid selects the preset in both SCP80 views', () => {
 	assert.strictEqual(idx, 0);
 	assert.strictEqual(els['sp-card-sel'].value, '0');
 	assert.strictEqual(els['ram-card-sel'].value, '0');
+	assert.strictEqual(els['tar-card-sel'].value, '0',
+		'the TAR probe view gets the equipped card\'s preset too');
 	assert.deepStrictEqual(applied, ['0']);
 	assert.strictEqual(globalThis._ramCardIdx, 0);
 });
@@ -162,5 +165,7 @@ test('the From card button and the duplicate refusal are wired into the form', (
 test('the card-state update wires the ICCID into the preset selection', () => {
 	assert.ok(html.includes('cardsAutoSelectByIccid(status.iccid);'));
 	assert.ok(html.includes('_cardsAutoIccid = null;'));
+	assert.ok(html.includes("getElementById('tar-card-sel')"),
+		'the auto-selection must cover the TAR probe view');
 	assert.ok(html.includes("(data.iccid ? ' | ICCID: <b>' + esc(data.iccid) + '</b>' : '')"));
 });