feat: funciones Python para API Metabase

Añade módulo Python con funciones para la API de Metabase en dominio infra.
Incluye cliente HTTP, auth, y CRUD de cards, dashboards y users.
Proyecto gestionado con uv (pyproject.toml).

python/functions/metabase/metabase_delete_dashboard.md

@@ -0,0 +1,32 @@
+---
+name: metabase_delete_dashboard
+kind: function
+lang: py
+domain: infra
+version: "1.0.0"
+purity: impure
+signature: "def metabase_delete_dashboard(client: MetabaseClient, dashboard_id: int) -> None"
+description: "Elimina permanentemente un dashboard. IRREVERSIBLE. Preferir archived=True. Endpoint: DELETE /api/dashboard/:id."
+tags: [metabase, dashboard, delete, api, python]
+uses_functions: []
+uses_types: []
+returns: []
+returns_optional: false
+error_type: "error_go_core"
+imports: [httpx]
+tested: false
+tests: []
+test_file_path: ""
+file_path: "python/functions/metabase/dashboards.py"
+---
+
+## Ejemplo
+
+```python
+metabase_delete_dashboard(client, 1)
+# Preferir: metabase_update_dashboard(client, 1, archived=True)
+```
+
+## Notas
+
+IRREVERSIBLE. Preferir soft-delete con metabase_update_dashboard(archived=True).