Add support for gpu-rent.vars and enhance git update functionality

- Updated .gitignore to include gpu-rent.vars.
- Modified env.example to introduce the UPDATE_GIT variable for controlling git updates during execution.
- Implemented Import-GpuRentVars function in gpu-rent.ps1 to load environment variables from gpu-rent.vars.
- Enhanced gpu-rent.sh to support loading variables from gpu-rent.vars and added logic for handling default and extra arguments.
- Updated CLI documentation to reflect the new gpu-rent.vars file and its usage in configuration.
- Improved bootstrap and provisioning logic to conditionally perform git updates based on the new configuration.

src/gpu_rent/provision.py

@@ -33,9 +33,9 @@ def _pkg_text(name: str) -> str:
     return files("gpu_rent.remote").joinpath(name).read_text(encoding="utf-8")
 
 
-def seed_extensions(cfg: Config, host: str, log: Log) -> bool:
+def seed_extensions(cfg: Config, host: str, log: Log, *, update: bool = True) -> bool:
     repos = parse_extensions(cfg.extensions_manifest)
-    if not repos:
+    if not repos and not update:
         log("extensions.yaml пуст — стоковый SwarmUI")
         return False
     jobs = []
@@ -49,9 +49,13 @@ def seed_extensions(cfg: Config, host: str, log: Log) -> bool:
             }
         )
     put_text(cfg, host, "/tmp/gpu-rent-ext.json", json.dumps(jobs, indent=2))
+    put_text(cfg, host, "/tmp/gpu-rent-update-git", "1\n" if update else "0\n")
     if cfg.git_token:
         put_text(cfg, host, "/tmp/gpu-rent-git.token", cfg.git_token + "\n", mode=0o600)
-    log(f"clone {len(jobs)} git-реп на data volume")
+    if update:
+        log(f"extensions: clone/update {len(jobs)} из yaml + установленные на data")
+    else:
+        log(f"extensions: только недостающие из yaml ({len(jobs)}), без git pull (--no-update)")
     out = run_python(
         cfg,
         host,
@@ -224,7 +228,10 @@ def seed_civitai(cfg: Config, host: str, log: Log) -> None:
         log("в манифесте нет checkpoint — генерация может не стартовать")
     put_text(cfg, host, "/tmp/gpu-rent-civitai-jobs.json", json.dumps(jobs, indent=2))
     put_text(cfg, host, "/tmp/gpu-rent-civitai.token", cfg.civitai_api_token + "\n", mode=0o600)
-    log(f"Civitai: качаю {len(jobs)} файл(ов) на VM")
+    log(
+        f"Civitai: {len(jobs)} в манифесте — на VM качаю отсутствующие "
+        f"(уже есть + sha → skip; прогресс [N/{len(jobs)}])"
+    )
     run_python(
         cfg,
         host,
@@ -254,10 +261,11 @@ def provision_vm(
     *,
     conn=None,
     server_id: str | None = None,
+    update: bool = True,
 ) -> None:
-    restart = False
+    restart = bool(update)
     try:
-        if seed_extensions(cfg, host, log):
+        if seed_extensions(cfg, host, log, update=update):
             restart = True
     except GpuRentError as exc:
         log(f"extensions: {exc}")