add more stats to mobile and fix refresh stint

server.js

@@ -371,6 +371,22 @@ app.get("/public-training/api/:shareToken", (req, res) => {
   }
 });
 
+app.post("/public-training/api/:shareToken/markers", (req, res) => {
+  try {
+    const stored = readStoredAppState();
+    const marker = stored ? publicTrainingProfile.addPublicTrainingMarker(stored.state, String(req.params.shareToken || ""), req.body || {}) : null;
+    if (!marker) {
+      res.status(404).json({ error: "Profile or class not found" });
+      return;
+    }
+    const nowIso = new Date().toISOString();
+    db.prepare("INSERT INTO app_state (id, state_json, updated_at) VALUES (1, ?, ?) ON CONFLICT(id) DO UPDATE SET state_json = excluded.state_json, updated_at = excluded.updated_at").run(JSON.stringify(stored.state), nowIso);
+    res.status(201).json({ ok: true, marker: { type: marker.type, timestamp: marker.timestamp, note: marker.note } });
+  } catch (error) {
+    res.status(500).json({ error: error instanceof Error ? error.message : String(error) });
+  }
+});
+
 app.get("/public-training/qr/:shareToken", async (req, res) => {
   try {
     const stored = readStoredAppState();