Note

Medium Risk
Medium risk because it changes the wire serialization for webhook template operations and updates Node/Python binding surfaces and TypeScript typings, which could break existing consumers if shapes diverge from the API or prior SDK behavior.

Overview
Refactors webhook template handling so TemplateArgs is a serde-tagged enum ({ templateId, templateArgs }) that is #[serde(flatten)] into create_webhook_from_template / update_webhook_template requests, removing the prior “JSON-string value + manual body patching” approach.

Updates language bindings to match the new discriminated-union model: Node now accepts { templateId, args } and converts/case-normalizes it in a new webhooks_template wrapper, while Python replaces the exported TemplateArgs pyclass with per-template *Args wrapper classes and extraction logic at the FFI boundary.

Extends list_webhooks responses to include pageInfo via a new WebhookPageInfo type, and updates docs, tests, and e2e examples across Rust/Python/Node/Ruby accordingly.

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