Enhance logging and timing in CLI and session operations

- Updated the `_print_checks` function to replace console prints with logging functions for better traceability.
- Introduced timing functionality in the `doctor`, `dry_run`, and `up` functions to log the duration of preflight checks.
- Modified the `wait_ssh` function to accept a logging callback, improving SSH wait feedback.
- Enhanced the `mark` method in `PhaseTimes` to log phase durations, aiding in performance analysis.
- Updated various remote scripts to ensure error messages are printed to stderr for better error handling.

src/gpu_rent/cli.py

@@ -61,20 +61,22 @@ def _print_checks(checks, *, quiet: bool = False) -> int:
     failed = blocking_failed(checks)
     if quiet:
         if failed:
-            console.print("[red]doctor: блокирующие проблемы[/red]")
+            err("doctor: блокирующие проблемы")
             for check in failed:
-                console.print(f"  • {check.name}: {check.detail}")
+                log(f"  • {check.name}: {check.detail}")
             _print_next_steps(failed)
             return 1
         warns = [c for c in checks if not c.ok and not c.blocking]
         if warns:
-            console.print(f"[yellow]doctor ok[/yellow] ({len(checks)}), предупреждения:")
+            warn(f"doctor ok ({len(checks)}), предупреждения:")
             for check in warns:
-                console.print(f"  • {check.name}: {check.detail}")
+                log(f"  • {check.name}: {check.detail}")
         else:
-            console.print(f"[green]doctor ok[/green] ({len(checks)} проверок)")
+            ok(f"doctor ok ({len(checks)} проверок)")
         return 0
 
+    from gpu_rent.timing import clock_prefix
+
     table = Table(title="gpu-rent doctor", show_lines=False)
     table.add_column("ok")
     table.add_column("проверка")
@@ -84,6 +86,7 @@ def _print_checks(checks, *, quiet: bool = False) -> int:
         mark = "[green]yes[/green]" if check.ok else "[red]NO[/red]"
         block = "да" if check.blocking else "нет"
         table.add_row(mark, check.name, block, check.detail)
+    console.print(f"[dim]{clock_prefix()}[/dim]таблица doctor ↓")
     console.print(table)
     if failed:
         console.print("\n[red]Сессию начинать нельзя.[/red] См. docs/setup.md")
@@ -130,8 +133,12 @@ def version() -> None:
 def doctor() -> None:
     """Preflight без create: Keystone, квота, flavor, диск, Civitai, манифесты."""
     try:
+        from gpu_rent.timing import clock_reset, format_duration, clock_elapsed
+
+        clock_reset()
         log("запускаю проверку…")
         checks = run_doctor()
+        log(f"проверка заняла {format_duration(clock_elapsed())}")
     except GpuRentError as exc:
         _die(exc)
     code = _print_checks(checks)
@@ -142,6 +149,9 @@ def doctor() -> None:
 def dry_run() -> None:
     """План без mutating-вызовов."""
     try:
+        from gpu_rent.timing import clock_reset
+
+        clock_reset()
         log("запускаю проверку…")
         checks = run_doctor()
         _print_checks(checks)
@@ -458,10 +468,13 @@ def up(
         )
         from gpu_rent.paths import vars_path
         from gpu_rent.prompts import MenuItem, prompt_menu
+        from gpu_rent.timing import clock_elapsed, clock_reset, format_duration
         from gpu_rent.varsfile import upsert_vars
 
+        clock_reset()
         log("запускаю проверку…")
         checks = run_doctor()
+        log(f"проверка заняла {format_duration(clock_elapsed())}")
         code = _print_checks(checks, quiet=not verbose)
         if code != 0:
             raise typer.Exit(1)