feat: improve updater flow and release channels

- added dedicated GUI updater executable and integrated launch path from main app

- added stable/beta update channel selection with persisted settings and checker support

- expanded CI/release validation to include updater and full test discovery

services/auto_update_service.py

@@ -104,12 +104,26 @@ class AutoUpdateService:
             "if %ERRORLEVEL% EQU 0 (",
             "  set /a WAIT_LOOPS+=1",
             "  if %WAIT_LOOPS% GEQ 180 (",
-            "    echo Timeout waiting for process %TARGET_PID% to exit >> \"%UPDATE_LOG%\"",
-            "    goto :backup",
+            "    echo Timeout waiting for process %TARGET_PID%, attempting force stop >> \"%UPDATE_LOG%\"",
+            "    taskkill /PID %TARGET_PID% /T /F >nul 2>&1",
+            "    timeout /t 2 /nobreak >nul",
+            "    tasklist /FI \"PID eq %TARGET_PID%\" | find \"%TARGET_PID%\" >nul",
+            "    if %ERRORLEVEL% EQU 0 goto :pid_still_running",
+            "    goto :wait_image_unlock",
             "  )",
             "  timeout /t 1 /nobreak >nul",
             "  goto :wait_for_exit",
             ")",
+            ":wait_image_unlock",
+            "set /a IMG_LOOPS=0",
+            ":check_image",
+            "tasklist /FI \"IMAGENAME eq %EXE_NAME%\" | find /I \"%EXE_NAME%\" >nul",
+            "if %ERRORLEVEL% EQU 0 (",
+            "  set /a IMG_LOOPS+=1",
+            "  if %IMG_LOOPS% GEQ 60 goto :image_still_running",
+            "  timeout /t 1 /nobreak >nul",
+            "  goto :check_image",
+            ")",
             ":backup",
             "timeout /t 1 /nobreak >nul",
             "mkdir \"%BACKUP_DIR%\" >nul 2>&1",
@@ -134,6 +148,12 @@ class AutoUpdateService:
             ":backup_error",
             "echo Auto-update failed during backup. Code %RC% >> \"%UPDATE_LOG%\"",
             "exit /b %RC%",
+            ":pid_still_running",
+            "echo Auto-update aborted: process %TARGET_PID% is still running after force stop. >> \"%UPDATE_LOG%\"",
+            "exit /b 4",
+            ":image_still_running",
+            "echo Auto-update aborted: %EXE_NAME% still running and file lock may remain. >> \"%UPDATE_LOG%\"",
+            "exit /b 5",
         ]
         with open(script_path, "w", encoding="utf-8", newline="\r\n") as f:
             f.write("\r\n".join(script_lines) + "\r\n")
@@ -152,6 +172,40 @@ class AutoUpdateService:
             creationflags=creation_flags,
         )
 
+    @staticmethod
+    def launch_gui_updater(app_exe, source_dir, work_dir, target_pid, version=""):
+        app_dir = os.path.dirname(app_exe)
+        exe_name = os.path.basename(app_exe)
+        updater_exe = os.path.join(app_dir, "AnabasisUpdater.exe")
+        if not os.path.exists(updater_exe):
+            raise RuntimeError("Файл AnabasisUpdater.exe не найден в папке приложения.")
+
+        creation_flags = 0
+        if hasattr(subprocess, "CREATE_NEW_PROCESS_GROUP"):
+            creation_flags |= subprocess.CREATE_NEW_PROCESS_GROUP
+        if hasattr(subprocess, "DETACHED_PROCESS"):
+            creation_flags |= subprocess.DETACHED_PROCESS
+
+        subprocess.Popen(
+            [
+                updater_exe,
+                "--app-dir",
+                app_dir,
+                "--source-dir",
+                source_dir,
+                "--exe-name",
+                exe_name,
+                "--target-pid",
+                str(target_pid),
+                "--version",
+                str(version or ""),
+                "--work-dir",
+                str(work_dir or ""),
+            ],
+            cwd=work_dir,
+            creationflags=creation_flags,
+        )
+
     @classmethod
     def prepare_update(cls, download_url, checksum_url, download_name):
         work_dir = tempfile.mkdtemp(prefix="anabasis_update_")