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();

wwwroot/index.html

@@ -10,6 +10,15 @@
   <header>
     <h1>Cost Analytics</h1>
     <div id="summary"></div>
+    <div id="anchor-config">
+      <label>Anker:</label>
+      <select id="anchor-day">
+        <option value="0">So</option><option value="1">Mo</option><option value="2">Di</option>
+        <option value="3">Mi</option><option value="4">Do</option><option value="5">Fr</option>
+        <option value="6">Sa</option>
+      </select>
+      <select id="anchor-hour"></select>
+    </div>
     <button id="btn-sync" title="Neue Einträge importieren">↻ Sync</button>
   </header>
 

wwwroot/style.css

@@ -34,6 +34,23 @@ header {
 
 header h1 { font-size: 1.1rem; font-weight: 600; color: var(--accent); }
 
+#anchor-config {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 0.8rem;
+  color: var(--muted);
+}
+
+#anchor-config select {
+  background: var(--surface);
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  padding: 2px 4px;
+  font-size: 0.8rem;
+}
+
 #btn-sync {
   background: var(--border);
   color: var(--text);