update eq_save_dirty_params

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc

@@ -1478,6 +1478,9 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                     if (factory_reset_req) {
                         SET_SHARED_GLOBAL(g_request_factory_reset, 0);
                         debug_printf("Factory reset: rebooting...\n");
+                        unsafe {
+                                  lfs_format_all();
+                        }
                         delay_milliseconds(500);
                         device_reboot();
                         while (1);

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/eq.c

@@ -775,17 +775,7 @@ unsigned char process_send_params(uint8_t data[], uint16_t len) {
 
     // 处理恢复出厂默认命令 (0x84) - FACTORY_RESET
     if (data[1] == 0x84) {
-        // 删除所有Flash保存的参数文件
-        lfs_remove_file("game_mode");
-        lfs_remove_file("mic_vol");
-        lfs_remove_file("dac_vol");
-        lfs_remove_file("footstep");
-        lfs_remove_file("monitor_sw");
-        lfs_remove_file("mic_mute");
-        lfs_remove_file("hp_mute");
-        // 删除EQ flash数据
-        eq_flash_clear_all();
-        // 通知button_task在合适时机重启（避免在USB上下文中直接reboot）
+        // 通知button_task在合适时机删除其他文件并重启
         SET_SHARED_GLOBAL(g_request_factory_reset, 1);
         read_request.pending_cmd = 0x84;
         return true;

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/eq_flash_storage.c

@@ -737,6 +737,18 @@ int eq_save_dirty_params(void) {
         return -1;
     }
 
+    int has_dirty = 0;
+    for (int i = 0; i < single_param_database.param_count; i++) {
+        if (single_param_database.params[i].is_dirty) {
+            has_dirty = 1;
+            break;
+        }
+    }
+
+    if (!has_dirty) {
+        return 0;
+    }
+
     if (lfs_init() != 0) {
         lfs_deinit();
         return -1;
@@ -2006,7 +2018,6 @@ int eq_flash_load_current_mode(void)
         DPRINTF("  Enable file does not exist, using default enable 0\n");
         eq_enable = 0;
     }
-
     // 设置全局变量g_eq_enable
     extern unsigned int g_eq_enable;
     g_eq_enable = eq_enable;

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/lfs_services.c

@@ -91,7 +91,6 @@ int lfs_init(void) {
     // 固件升级期间禁止LFS操作，避免与DFU flash访问冲突
     if (g_in_fw_upgrade) {
         debug_printf("lfs_init: blocked during firmware upgrade\n");
-        lfs_session_active = 0;
         return -2;
     }
 #endif