feat: bootstrap design kit and vaporwave demo baseline

CLAUDE.md

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+# UI Design Code — Instructions for Claude
+
+Read and follow the project Bible before making any changes:
+
+**[`bible/README.md`](bible/README.md)**
+
+The Bible is the single source of truth for architecture, public integration contracts,
+bundle manifests, and reusable pattern conventions.
+
+Every significant architectural decision must be recorded in
+[`bible/decisions/10-decisions.md`](bible/decisions/10-decisions.md).
+
+If a change affects `kit/`, `exports/`, or `tools/designsync`, update the relevant Bible
+docs and `CHANGELOG.md` in the same change set.
+
+Do not expand the repository scope beyond the currently approved work area unless the user
+explicitly requests that expansion.