chore: auto-commit (95 archivos)

- cmd/fn/doctor.go
- cmd/fn/main.go
- cpp/apps/primitives_gallery/playground/tables/CMakeLists.txt
- cpp/apps/primitives_gallery/playground/tables/data_table.cpp
- cpp/apps/primitives_gallery/playground/tables/data_table_logic.cpp
- cpp/apps/primitives_gallery/playground/tables/data_table_logic.h
- cpp/apps/primitives_gallery/playground/tables/self_test.cpp
- cpp/apps/primitives_gallery/playground/tables/tql.cpp
- cpp/apps/primitives_gallery/playground/tables/viz.cpp
- cpp/apps/primitives_gallery/playground/tables/viz.h
- ...

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

functions/infra/audit_ml_env.md

@@ -0,0 +1,67 @@
+---
+name: audit_ml_env
+kind: function
+lang: go
+domain: infra
+version: "1.0.0"
+purity: impure
+signature: "func AuditMlEnv(registryRoot string) (MlEnvReport, error)"
+description: "Audita el entorno ML del sistema: GPUs NVIDIA, toolkit CUDA, venv Python, paquetes clave (torch, diffusers, transformers, huggingface_hub), herramientas CLI (sd, llama-cli) y el vault de modelos. Retorna un MlEnvReport con OverallOK=true solo si hay al menos 1 GPU y los checks criticos estan en ok/warning."
+tags: [ml, cuda, gpu, nvidia, audit, doctor, infra, torch, diffusers]
+uses_functions: [get_gpu_info_go_infra]
+uses_types: [gpu_info_go_infra]
+returns: []
+returns_optional: false
+error_type: "error_go_core"
+imports: [context, fmt, os, os/exec, path/filepath, strings, time]
+tested: true
+tests:
+  - "report no nil y tiene checks"
+  - "generated_at es positivo"
+  - "checks tiene al menos 4 entradas"
+  - "gpus puede ser vacio en CI"
+test_file_path: "functions/infra/audit_ml_env_test.go"
+file_path: "functions/infra/audit_ml_env.go"
+params:
+  - name: registryRoot
+    desc: "Ruta absoluta a la raiz del fn_registry. Se usa para localizar python/.venv/bin/python3 y probar paquetes instalados."
+output: "MlEnvReport con Gpus (puede estar vacio si no hay NVIDIA), Checks con estado por herramienta/paquete, OverallOK y GeneratedAt (unix timestamp)."
+---
+
+## Checks realizados
+
+| Check | Tipo | Critico |
+|---|---|---|
+| `nvidia_smi` | binary in PATH | no (ok si hay GPU) |
+| `nvcc` | CUDA toolkit version | no |
+| `python_venv` | exists + `python3 --version` | si |
+| `torch` | `import torch; __version__` | si |
+| `diffusers` | `import diffusers; __version__` | si |
+| `transformers` | `import transformers; __version__` | si |
+| `huggingface_hub` | `import huggingface_hub; __version__` | si |
+| `stable_diffusion_cpp_python` | `import stable_diffusion_cpp` | no (opcional) |
+| `sd_cli` | `sd --version` in PATH | no (opcional) |
+| `llama_cpp` | `llama-cli --version` in PATH | no (opcional) |
+| `imagegen_vault` | `~/vaults/imagegen_models` exists | no |
+
+## Ejemplo
+
+```go
+root := "/home/lucas/fn_registry"
+report, err := AuditMlEnv(root)
+if err != nil {
+    log.Fatal(err)
+}
+for _, c := range report.Checks {
+    fmt.Printf("%-40s %s  %s\n", c.Name, c.Status, c.Version)
+}
+fmt.Printf("OverallOK: %v\n", report.OverallOK)
+```
+
+## Notas
+
+- Cada check tiene timeout de 5 segundos para no bloquear en entornos sin GPU.
+- `stable_diffusion_cpp_python`, `sd_cli` y `llama_cpp` son opcionales: si estan missing, `OverallOK` no se ve afectado.
+- `OverallOK` requiere al menos 1 GPU NVIDIA detectada via `GetGpuInfo()`.
+- No escribe nada en disco. Read-only.
+- Se expone como `fn doctor ml` via cmd/fn/doctor.go.