chore: checkpoint app work before firmware sync

Apps/PipecatVoice/main/Source/websocket.h

@@ -14,10 +14,10 @@ extern "C" {
  * @param port Port number (e.g. 8642)
  * @param path WebSocket path (e.g. "/api/esp32/voice/ws")
  * @param device_id Unique device identifier
- * @param auth_key Hermes Bearer API key
+ * @param api_key Optional profile API key; never compiled into firmware
  * @return Socket file descriptor on success, or -1 on failure
  */
-int ws_connect(const char* host, int port, const char* path, const char* device_id, const char* auth_key);
+int ws_connect(const char* host, int port, const char* path, const char* device_id, const char* api_key);
 
 /**
  * Send a WebSocket frame.
@@ -37,7 +37,7 @@ int ws_send(int fd, const uint8_t* data, size_t len, bool binary);
  * @param max_len Maximum length of the payload buffer
  * @return Received payload length on success, -1 on connection failure, or -2 on buffer overflow
  */
-int ws_recv(int fd, int* out_opcode, uint8_t* payload, size_t max_len);
+int ws_recv(int fd, int* out_opcode, bool* out_final, uint8_t* payload, size_t max_len);
 
 /**
  * Close a WebSocket connection.
@@ -54,6 +54,9 @@ void ws_close(int fd);
  */
 int ws_send_pong(int fd, const uint8_t* payload, size_t len);
 
+/** Send a clean WebSocket close control frame before closing the socket. */
+int ws_send_close(int fd);
+
 #ifdef __cplusplus
 }
 #endif