feat(cuda): добавлен прозрачный GPU runtime для Linux/WSL2

- Зачем:
  - ctranslate2 требует libcublas.so.12 для CUDA, но не бандлит её в wheel —
    без системного CUDA toolkit GPU не работает из коробки.
- Что:
  - добавлена зависимость nvidia-cublas-cu12 (Linux x86_64).
  - создан _cuda_bootstrap.py: preload libcublas через ctypes.CDLL(RTLD_GLOBAL)
    до импорта ctranslate2 (LD_LIBRARY_PATH не работает — glibc кеширует пути).
  - добавлен strict_device в transcriber: --device cuda/cpu не делает silent fallback.
  - CLI: диагностика requested vs resolved device, Windows CUDA-подсказка.
- Проверка:
  - uv run pytest -v (52 passed, 1 skipped).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

uv.lock

@@ -300,6 +300,7 @@ version = "0.1.0"
 source = { editable = "." }
 dependencies = [
     { name = "faster-whisper" },
+    { name = "nvidia-cublas-cu12", marker = "platform_machine == 'x86_64' and sys_platform == 'linux'" },
     { name = "rich" },
     { name = "socksio" },
     { name = "typer" },
@@ -313,6 +314,7 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "faster-whisper", specifier = ">=1.2.1" },
+    { name = "nvidia-cublas-cu12", marker = "platform_machine == 'x86_64' and sys_platform == 'linux'", specifier = ">=12.4" },
     { name = "rich" },
     { name = "socksio", specifier = ">=1.0.0" },
     { name = "typer" },
@@ -498,6 +500,14 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/57/a7/b35835e278c18b85206834b3aa3abe68e77a98769c59233d1f6300284781/numpy-2.4.3-pp311-pypy311_pp73-win_amd64.whl", hash = "sha256:4b42639cdde6d24e732ff823a3fa5b701d8acad89c4142bc1d0bd6dc85200ba5", size = 12504685, upload-time = "2026-03-09T07:58:50.525Z" },
 ]
 
+[[package]]
+name = "nvidia-cublas-cu12"
+version = "12.9.1.4"
+source = { registry = "https://pypi.org/simple" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/77/3c/aa88abe01f3be3d1f8f787d1d33dc83e76fec05945f9a28fbb41cfb99cd5/nvidia_cublas_cu12-12.9.1.4-py3-none-manylinux_2_27_x86_64.whl", hash = "sha256:453611eb21a7c1f2c2156ed9f3a45b691deda0440ec550860290dc901af5b4c2", size = 581242350, upload-time = "2025-06-05T20:04:51.979Z" },
+]
+
 [[package]]
 name = "onnxruntime"
 version = "1.24.3"