feat: bootstrap design kit and vaporwave demo baseline

kit/patterns/theme-aqua-legacy/README.md

@@ -0,0 +1,14 @@
+# macOS Aqua Theme Snapshot (Legacy)
+
+Status: legacy reference only (not active baseline)
+
+This directory preserves the Aqua-style visual exploration snapshot that was developed during demo
+refinement. It is stored as a reusable archive bundle so it can be referenced later without
+driving the active baseline.
+
+Active visual baseline for the demo/scaffold is Aqua-first. This package is a frozen snapshot for archival/reference use.
+
+Contents:
+
+- `demo-aqua-freeze.css` — frozen snapshot of the demo stylesheet at the time of the freeze
+- `notes.md` — summary of what was explored and how to treat the snapshot

kit/patterns/theme-aqua-legacy/notes.md

@@ -0,0 +1,22 @@
+# Aqua Legacy Snapshot Notes
+
+This snapshot is kept for historical reference and selective reuse.
+
+## What it captures
+
+- Aqua-style control surfaces and button hierarchy
+- segmented controls and tab-like grouped buttons
+- modal window chrome experiments (titlebar + close button)
+- table/filter visual refinements and dot-pager styling
+- style-playground Aqua preset refinements
+
+## What it is not
+
+- Not a required dependency for host projects
+- Not the live source of truth for the current Aqua baseline (the live baseline is in demo/scaffold CSS)
+- Not the target for normal iterative styling work unless explicitly requested
+
+## Current policy
+
+- Active baseline styling remains Aqua-first in the live demo/scaffold assets.
+- Use this snapshot only when explicitly needed for archival comparison or extraction.