Function findFirstAccessibleFolder

public/js/folderManager.js:539–574

* BFS: starting at `startFolder`, find the first folder the user can view. * - Skips "trash" and "profile_pics" * - Honors server-side "locked" from listChildren, but still double-checks capabilities * - Hard limit to avoid endless walks

(startFolder = 'root')

 * - Hard limit to avoid endless walks
 */
async function findFirstAccessibleFolder(startFolder = 'root') {
  const MAX_VISITS = 3000;
  const visited = new Set();
  const q = [startFolder];

  while (q.length && visited.size < MAX_VISITS) {
    const f = q.shift();
    if (!f || visited.has(f)) continue;
    visited.add(f);

    // Check viewability
    if (await canViewFolder(f)) return f;

    // Enqueue children for BFS
    try {
      const payload = await fetchChildrenOnce(f);
      const items = (payload?.items || []);
      for (const it of items) {
        const name = (typeof it === 'string') ? it : (it && it.name);
        if (!name) continue;
        const lower = String(name).toLowerCase();
        if (
          lower === 'trash' ||
          lower === 'profile_pics' ||
          lower.startsWith('resumable_')
        ) {
          continue;
        }
        const child = (f === 'root') ? name : `${f}/${name}`;
        if (!visited.has(child)) q.push(child);
      }
      // If there are more pages, we only need one page to keep BFS order lightweight
    } catch (e) { /* ignore and continue */ }
  }
  return null; // none found
}
function showNoAccessEmptyState() {
  // 1) Hide actions bar
  const actions = document.getElementById('fileListActions');