feat: implement probe renaming and settings management via API

frontend/app.py

@@ -84,6 +84,51 @@ def api_cyd_latest():
     return jsonify(payload)
 
 
+def _fetch_cyd_settings():
+    try:
+        resp = requests.get(f"{config.CYD_BASE_URL}/api/settings", timeout=10)
+        resp.raise_for_status()
+        return resp.json()
+    except Exception as e:
+        app.logger.warning(f"CYD settings fetch failed: {e}")
+        return None
+
+
+@app.route("/api/probes", methods=["GET", "PUT"])
+def probes():
+    if request.method == "GET":
+        settings = _fetch_cyd_settings()
+        if settings is None:
+            # Fall back to the latest reading so the UI still has something to show.
+            latest = fetch_cyd()
+            names = []
+            if latest:
+                names = [p.get("name", f"Probe {i + 1}") for i, p in enumerate(latest.get("probes", []))]
+            if not names:
+                names = [f"Probe {i + 1}" for i in range(4)]
+            return jsonify({"ok": True, "names": names, "source": "fallback"}), 200
+        names = settings.get("probeNames", [f"Probe {i + 1}" for i in range(4)])
+        return jsonify({"ok": True, "names": names, "source": "cyd"})
+
+    # PUT — forward to CYD's /api/settings with just the probeNames field.
+    data = request.get_json() or {}
+    names = data.get("names", [])
+    if not isinstance(names, list) or len(names) != 4 or not all(isinstance(n, str) for n in names):
+        return jsonify({"ok": False, "error": "names must be an array of 4 strings"}), 422
+    try:
+        resp = requests.post(
+            f"{config.CYD_BASE_URL}/api/settings",
+            json={"probeNames": names},
+            timeout=10,
+        )
+        resp.raise_for_status()
+    except Exception as e:
+        app.logger.warning(f"CYD settings update failed: {e}")
+        return jsonify({"ok": False, "error": f"Unable to update CYD: {e}"}), 502
+
+    return jsonify({"ok": True, "names": names})
+
+
 @app.route("/api/sessions", methods=["GET", "POST"])
 def sessions():
     if request.method == "POST":