Initial commit: Interactives site

Astro-based site with 40+ interactive math games, puzzles, and explorations.
Includes admin dashboard, todo system, blog, theme/subcategory navigation,
and embed pages for iframe embedding.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,30 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+
+# Astro
+.astro/
+
+# Vite
+node_modules/.vite/
+
+# Environment
+.env
+.env.*
+
+# OS
+.DS_Store
+Thumbs.db
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Lock files (keep package-lock.json, ignore others)
+bun.lockb
+yarn.lock
+pnpm-lock.yaml