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/session.py

@@ -88,8 +88,8 @@ def _bind_access(
     if fip_id:
         state.floating_ip_id = fip_id
     save_state(state)
-    wait_ssh(cfg, ip)
-    clock.mark("SSH")
+    wait_ssh(cfg, ip, log=log)
+    clock.mark("SSH", log)
     log(f"SSH {cfg.ssh_user}@{ip}")
     state.phase = "bootstrapping"
     save_state(state)
@@ -141,7 +141,7 @@ def _bind_access(
             log("bootstrap: FULL llm-only — маркера data ready нет")
 
     run_bootstrap(cfg, ip, log, update=update and swarm, light=light)
-    clock.mark("bootstrap")
+    clock.mark("bootstrap", log)
     provision_vm(
         cfg,
         ip,
@@ -150,13 +150,13 @@ def _bind_access(
         server_id=getattr(server, "id", None) or state.server_id,
         update=update,
     )
-    clock.mark("provision")
+    clock.mark("provision", log)
     if swarm:
         try:
             wait_backend_idle(cfg, ip, log)
         except CloudError as exc:
             log(f"ready: {exc}")
-        clock.mark("Idle")
+        clock.mark("Idle", log)
         try:
             if tune_swarm_perf(cfg, ip, log):
                 log("systemctl restart swarmui (perf ExtraArgs)")
@@ -169,12 +169,12 @@ def _bind_access(
                 log("perf tune: restart не нужен")
         except Exception as exc:
             log(f"perf tune: {exc}")
-        clock.mark("perf")
+        clock.mark("perf", log)
         try:
             seed_swarmui_api_keys(cfg, ip, log)
         except Exception as exc:
             log(f"SwarmUI API keys: {exc}")
-        clock.mark("api-keys")
+        clock.mark("api-keys", log)
     else:
         log("ready: llm-only (без ожидания SwarmUI Idle)")
 
@@ -190,7 +190,7 @@ def _bind_access(
         state.notes["stack_vm_error"] = str(exc)[:500]
         save_state(state)
         raise
-    clock.mark("verify")
+    clock.mark("verify", log)
 
     try:
         gpu_checks = verify_gpu_env(cfg, ip, log, timeout=600.0)
@@ -204,7 +204,7 @@ def _bind_access(
         state.notes["gpu_env_error"] = str(exc)[:500]
         save_state(state)
         raise
-    clock.mark("gpu-env")
+    clock.mark("gpu-env", log)
 
     try:
         ensure_boot_snapshot(
@@ -243,7 +243,8 @@ def _bind_access(
     state.notes["enable_swarmui"] = swarm
     state.notes["up_timing"] = clock.summary_line()
     save_state(state)
-    log(f"тайминг up: {clock.summary_line()}")
+    for line in clock.summary_lines():
+        log(line)
     return state