editor: new appointments never inherit the active bucket

The modal's default-bucket logic dropped new cards into the current
real bucket when opened from one. Calendar-created appointments
(body pre-seeded with #termin / #geburtstag) would then land in e.g.
"work" instead of living bucket-less as calendar entries should.
Detect the pre-filled tag on open and force inpBucket empty for
those; regular new cards still inherit the active bucket.

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

public/js/modules/editor.js

@@ -226,8 +226,15 @@ export function openModal(card = null) {
     inpTitle.value = card ? card.title : (isJournal ? today : '');
     body.value = card ? card.body : '';
     const virtualBuckets = ['all', 'none', 'current', 'favorites', 'journal'];
+    // New appointments (#termin / #geburtstag pre-filled from the
+    // calendar's day-popup template) must never inherit the active
+    // bucket — they belong to a calendar, not a kanban column. For
+    // every other new card, inherit the active real bucket if we're
+    // in one so the user doesn't have to re-pick it.
+    const isNewAppointment = !card && /#(termin|geburtstag)\b/.test(body.value);
     inpBucket.value = card?.bucket_id ? card.bucket_id
-        : (!virtualBuckets.includes(state.activeBucket) ? state.activeBucket : '');
+        : (isNewAppointment ? ''
+           : (!virtualBuckets.includes(state.activeBucket) ? state.activeBucket : ''));
     selectColor(card ? card.color : '#38bdf8');
     setDueDate(card?.due_date || '');
     updateDoneToggle();