add change

Author: JerryWu1234

.changeset/huge-clubs-rest.md

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+---
+'@qwik.dev/devtools': patch
+---
+
+chore: update .gitignore, pnpm-lock.yaml, and add Qwik development documentation
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+- Updated .gitignore to include new patterns for cursor skills and Qwik devtools.
+- Modified pnpm-lock.yaml to add new dependencies including rollup-plugin-visualizer and define-lazy-prop.
+- Introduced AGENTS.md and SKILL.md for Qwik core development guidelines, detailing architecture, best practices, and mandatory workflows.