Update addon tests, bootstrap runtime, download progress, and worker functionality

- Modified status messages and stage labels in `test_addon.py` for clarity and consistency.
- Added tests to ensure proper host termination and command execution in `test_addon.py`.
- Enhanced `test_bootstrap_runtime.py` with additional tests for installation behavior, including handling of CUDA and MPS devices, and improved error handling for disk space and network checks.
- Updated download progress reporting in `test_download_progress.py` to include download speed and improved message formatting.
- Added new tests in `test_worker.py` for device selection, NPZ file validation, and model downloading behavior with Hugging Face endpoints.
- Bumped version in `uv.lock` to 0.9.30.

src/snapform/runtime.py

@@ -4,6 +4,7 @@ import secrets
 import shutil
 import socket
 import subprocess
+import sys
 import time
 import uuid
 from dataclasses import dataclass
@@ -141,7 +142,13 @@ def uv_executable():
         return resolved
     if Path(configured).is_file():
         return str(Path(configured))
-    raise RuntimeError("uv executable was not found")
+    return str(uv_cache_path())
+
+
+def uv_cache_path():
+    if os.name == "nt":
+        return storage_root() / "uv" / "uv.exe"
+    return storage_root() / "uv" / "uv"
 
 
 def install_runtime_command(status_path):
@@ -150,11 +157,7 @@ def install_runtime_command(status_path):
     backend = getattr(addon_preferences, "torch_backend", "CU128")
     script = Path(__file__).with_name("bootstrap_runtime.py")
     return [
-        executable,
-        "run",
-        "--no-project",
-        "--python",
-        "3.12",
+        sys.executable,
         str(script),
         "--uv",
         executable,
@@ -450,7 +453,8 @@ def detach_host_client():
             pass
     _host_connection = None
     _registered_instance_id = None
-    _close_launched_host(terminate=False)
+    # 如果 Host 是由当前 Blender 启动的，关闭 Blender 时直接终止它，无需等待空闲超时
+    _close_launched_host(terminate=True)
 
 
 def schedule_host_start():
@@ -598,6 +602,8 @@ def download_model_command(model_key, status_path):
         str(model_directory(model_key)),
         "--status",
         str(status_path),
+        "--label",
+        model.label,
     ]
     for pattern in model.download_patterns:
         command.extend(["--allow-pattern", pattern])