move anchor config to frontend dropdowns + localStorage, remove /api/settings

wwwroot/app.js

@@ -68,12 +68,34 @@ async function init() {
   $('modal').addEventListener('click', e => { if (e.target === $('modal')) closeModal(); });
   document.addEventListener('keydown', e => { if (e.key === 'Escape') closeModal(); });
 
-  // Load anchor settings
-  try {
-    const settings = await api('/api/settings');
-    if (settings.anchorDay != null) ANCHOR_DAY = settings.anchorDay;
-    if (settings.anchorHour != null) ANCHOR_HOUR = settings.anchorHour;
-  } catch {}
+  // Anchor dropdowns
+  const daySelect = $('anchor-day');
+  const hourSelect = $('anchor-hour');
+  for (let h = 0; h < 24; h++) {
+    const opt = document.createElement('option');
+    opt.value = h;
+    opt.textContent = h.toString().padStart(2, '0') + ':00';
+    hourSelect.appendChild(opt);
+  }
+
+  // Load from localStorage
+  const savedDay = localStorage.getItem('anchorDay');
+  const savedHour = localStorage.getItem('anchorHour');
+  if (savedDay != null) ANCHOR_DAY = parseInt(savedDay);
+  if (savedHour != null) ANCHOR_HOUR = parseInt(savedHour);
+  daySelect.value = ANCHOR_DAY;
+  hourSelect.value = ANCHOR_HOUR;
+
+  daySelect.addEventListener('change', () => {
+    ANCHOR_DAY = parseInt(daySelect.value);
+    localStorage.setItem('anchorDay', ANCHOR_DAY);
+    resetToStart();
+  });
+  hourSelect.addEventListener('change', () => {
+    ANCHOR_HOUR = parseInt(hourSelect.value);
+    localStorage.setItem('anchorHour', ANCHOR_HOUR);
+    resetToStart();
+  });
 
   zoomIndex = 0;
   const range = getAnchoredRange(zoomIndex);
@@ -445,6 +467,17 @@ function enterEntryMode(bucketStart, bucketEnd) {
   loadView();
 }
 
+function resetToStart() {
+  location.hash = '';
+  zoomIndex = 0;
+  entryMode = false;
+  zoomStack = [];
+  const range = getAnchoredRange(zoomIndex);
+  viewFrom = range.from;
+  viewTo = range.to;
+  loadView();
+}
+
 function zoomOut() {
   if (zoomStack.length) {
     const prev = zoomStack.pop();