feat(config): add backrest_username and backrest_password settings

apps/dashboard/backend/app/config.py

@@ -31,13 +31,13 @@ class Settings(BaseSettings):
 
     cors_allow_origins: list[str] = Field(default_factory=lambda: ["http://localhost:3000"])
 
-    request_timeout_seconds: float = Field(default=10.0, ge=1.0)
-
     cache_ttl_overview_seconds: int = Field(default=20, ge=1)
     cache_ttl_system_seconds: int = Field(default=10, ge=1)
     cache_ttl_services_seconds: int = Field(default=15, ge=1)
     cache_ttl_storage_seconds: int = Field(default=30, ge=1)
 
+    request_timeout_seconds: float = Field(default=5.0, gt=0)
+
     beszel_base_url: HttpUrl | None = None
     beszel_api_token: str | None = None
     beszel_admin_email: str | None = None
@@ -63,6 +63,8 @@ class Settings(BaseSettings):
     immich_api_key: str | None = None
 
     backrest_base_url: HttpUrl | None = None
+    backrest_username: str | None = None
+    backrest_password: str | None = None
 
 
 @lru_cache(maxsize=1)