Initial commit: FA Design System source files

Copy of the Funeral Arranger design system components, theme, tokens,
and Storybook config from the original Parsons project. Pre-upgrade
baseline with React 18, MUI v5, Storybook 8.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,22 @@
+node_modules/
+dist/
+storybook-static/
+tokens/export/
+*.local
+.env
+.env.*
+.DS_Store
+*.tgz
+
+# AI agent tooling
+.claude/
+CLAUDE.md
+.mcp.json
+
+# Build artefacts
+build-storybook.log
+
+# IDE-specific
+*.code-workspace
+.vscode/
+.idea/