Add a kanban example smoke test for #[slhx::form] plus #[slhx::handler] over the generated create_card form resource.
req: form/001
req: form/004
req: form/006
req: derive_handler/003
Make v0 and kanban DOM-aware escaped-text checks exact instead of substring-based while preserving the no-rendered-tag assertions.
req: html_safety/002
req: test/005
Replace the Kanban generated-slot unit test's inline raw HTML board payload with a hemplate-rendered view and DOM-aware assertion.
req: html_safety/002
req: view/001
req: test/005
Move the kanban SSE presence fragment from Rust raw HTML formatting into a hemplate partial/view and cover the rendered structure with scraper.
req: html_safety/002
req: view/001
req: test/005