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_sync.md

@@ -0,0 +1,33 @@
+---
+name: pass_sync
+kind: function
+lang: bash
+domain: infra
+version: "1.0.0"
+purity: impure
+signature: "pass_sync() -> json"
+description: "Sincroniza el password store con el repositorio git remoto (pull + push)."
+tags: [pass, secret, sync, git]
+uses_functions: []
+uses_types: []
+returns: []
+returns_optional: false
+error_type: "error_go_core"
+imports: []
+tested: true
+tests: ["sincroniza con remoto"]
+test_file_path: "bash/functions/infra/pass_test.sh"
+file_path: "bash/functions/infra/pass_sync.sh"
+---
+
+## Ejemplo
+
+```bash
+source pass_sync.sh
+result=$(pass_sync)
+# {"pull":"Already up to date.","push":"Everything up-to-date"}
+```
+
+## Notas
+
+Ejecuta `pass git pull` seguido de `pass git push`. Requiere que el password store tenga un remote git configurado. Retorna JSON con la ultima linea de cada operacion.