htmx-knowledge-patchlisted

# htmx Knowledge Patch Use this skill when implementing, reviewing, debugging, or upgrading htmx applications. Start with the migration notes when touching established code, then open the topic reference that matches the task. ## Reference index | Reference | Topics | | --- | --- | | [Migration and configuration](references/migration-and-configuration.md) | Extension packaging, distribution builds, removed APIs, Shadow DOM, maintenance policy | | [Events and JavaScript](references/events-and-javascript.md) | Trigger sources and filters, polling, asynchronous confirmation, inheritance | | [History and caching](references/history-and-caching.md) | History restoration, snapshot safety, cache variants, cache bypass | | [Requests and validation](references/requests-and-validation.md) | Request defaults, URL validation, CORS, form validation, boosted CSRF tokens | | [Swaps and responses](references/swaps-and-responses.md) | Scrolling, literal text, out-of-band content, status handling, redirects | | [Extensions and security](references/extensions-and-security.md) | CSP nonces, attribute mutation, URL parameters, JSON forms | ## Breaking migrations first ### Upgrade separately distributed extensions Extensions no longer share the core package's versioning. Audit each installed extension independently. In particular, upgrade the SSE extension and replace the removed `hx-sse` and `hx-ws` attributes with the attributes supplied by the corresponding extensions. See [Migration and