feat: funciones pass para gestión de secretos — get, set, list, delete, generate, sync

Wrappers Bash sobre pass (password-store) para CRUD de secretos, generación
de contraseñas y sincronización con git. Incluye script de test.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

bash/functions/infra/pass_generate.md

@@ -0,0 +1,33 @@
+---
+name: pass_generate
+kind: function
+lang: bash
+domain: infra
+version: "1.0.0"
+purity: impure
+signature: "pass_generate(entry: string, [length: int]) -> string"
+description: "Genera un password aleatorio, lo almacena en el password store e imprime el valor generado."
+tags: [pass, secret, credential, generate, random]
+uses_functions: []
+uses_types: []
+returns: []
+returns_optional: false
+error_type: "error_go_core"
+imports: []
+tested: true
+tests: ["genera password de longitud especifica", "default 24 chars"]
+test_file_path: "bash/functions/infra/pass_test.sh"
+file_path: "bash/functions/infra/pass_generate.sh"
+---
+
+## Ejemplo
+
+```bash
+source pass_generate.sh
+new_pass=$(pass_generate agentes/nuevo-servicio 32)
+echo "password generado: $new_pass"
+```
+
+## Notas
+
+Usa `pass generate -f -n` (force overwrite, no symbols). Default 24 caracteres alfanumericos.