tests: rebind runner to Ctrl+Shift+Alt+T and cover recent fixes

Plugin loader + runner shortcut moves to Ctrl+Shift+Alt+T (the old
Ctrl+Shift+T conflicts with the browser "reopen closed tab"). Loader
now imports runner.js *without* the cache-busting query so it picks
up the same module instance the test files register their suites
into — previously the shortcut opened a fresh runner with an empty
suites array and reported 0/0 passed.

New / fixed coverage:
- card-interactions: favorite toggle assertion is now case-insensitive
  (context menu was capitalized to "Unfavorite"/"Favorite" earlier);
  done-badge test guards against state.hideDone / hideTagged that would
  filter the test card off the board; new test for the always-on
  Mark done / Unmark done toggle on a card without due_date.
- context-menu: copy-text action exists; copy-text strips fenced code
  blocks, image markdown and inline #tags. Mocks navigator.clipboard
  via Object.defineProperty so the assertion works without a focused
  / secure-context clipboard.
- export: round-trip preserves a custom bucket color (covers the import
  handler regression that was wiping bucket colors on every test run).
- theme: design preset selection persists in localStorage across
  settings open/close, refreshPresetSelect ignores unknown keys.
  afterEach restores both hyprcrd-design-active-preset and
  hyprcrd-design so a test run can't permanently swap the user's
  design.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

public/plugins/tests/card-interactions.test.js

@@ -70,6 +70,7 @@ describe('Card: Due Date & Done', () => {
 
     it('card with #done tag shows done badge', async () => {
         if (localStorage.getItem('hyprcrd-show-done-badge') === '0') return;
+        if (state.hideDone || state.hideTagged) return;
         const res = await fetch('api/cards', {
             method: 'POST', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': csrf() },
             body: JSON.stringify({ title: '__test_done_badge__', body: '#done', color: '#38bdf8' }),
@@ -110,7 +111,7 @@ describe('Card: Context Menu Actions', () => {
         rightClick(card);
         await sleep(150);
         const favBtn = $$('#ctx-items [data-action="favorite"]')[0];
-        const wasFav = favBtn?.textContent.includes('unfavorite');
+        const wasFav = favBtn?.textContent.toLowerCase().includes('unfavorite');
         click(favBtn);
         await sleep(200);
 
@@ -118,13 +119,53 @@ describe('Card: Context Menu Actions', () => {
         rightClick(card);
         await sleep(150);
         const favBtn2 = $$('#ctx-items [data-action="favorite"]')[0];
-        const isFav = favBtn2?.textContent.includes('unfavorite');
+        const isFav = favBtn2?.textContent.toLowerCase().includes('unfavorite');
         expect(isFav).toBe(!wasFav);
         // Toggle back
         click(favBtn2);
         await sleep(100);
     });
 
+    it('mark done toggles #done on cards without due_date', async () => {
+        // After clicking, the card has #done — if either filter is on it would
+        // disappear from the board before the second right-click can find it.
+        if (state.hideDone || state.hideTagged) return;
+        // Create a card with no due_date — Mark done used to be hidden in this case
+        const res = await fetch('api/cards', {
+            method: 'POST', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': csrf() },
+            body: JSON.stringify({ title: '__test_mark_done__', body: 'plain text', color: '#38bdf8' }),
+        }).then(r => r.json());
+        await window._reloadAll?.();
+        await sleep(200);
+
+        const cardEl = document.querySelector(`[data-id="${res.id}"]`);
+        if (!cardEl) return;
+        rightClick(cardEl);
+        await sleep(150);
+
+        // The action must always be present, even with no due_date
+        const doneBtn = $$('#ctx-items [data-action="due-done"]')[0];
+        expect(doneBtn).toExist();
+        expect(doneBtn.textContent.toLowerCase()).toContain('mark done');
+
+        click(doneBtn);
+        await sleep(300);
+        let updated = await fetch(`api/cards?ids=${res.id}`).then(r => r.json());
+        expect((updated[0].body || '').toLowerCase()).toContain('#done');
+        expect(updated[0].tags || '').toContain('done');
+
+        // Re-open menu — the entry should now flip to "Unmark done"
+        rightClick(document.querySelector(`[data-id="${res.id}"]`));
+        await sleep(150);
+        const doneBtn2 = $$('#ctx-items [data-action="due-done"]')[0];
+        expect(doneBtn2.textContent.toLowerCase()).toContain('unmark');
+
+        click(doneBtn2);
+        await sleep(300);
+        updated = await fetch(`api/cards?ids=${res.id}`).then(r => r.json());
+        expect((updated[0].body || '').toLowerCase().includes('#done')).toBe(false);
+    });
+
     it('color submenu changes card color', async () => {
         const res = await fetch('api/cards', {
             method: 'POST', headers: { 'Content-Type': 'application/json', 'X-CSRF-Token': csrf() },