Initial project setup: Rust/WASM solar system simulator with SvelteKit frontend

- Rust workspace with 4 crates: orbital-mechanics, mass-driver-core, mass-driver-wasm, mass-driver-backend
- Keplerian orbital mechanics engine with JPL elements for 14 bodies (Sun, 8 planets, Pluto, Ceres, Europa, Titan, Ganymede)
- Kepler equation solver and orbital position computation compiled to WASM
- SvelteKit frontend with Tailwind CSS, Canvas2D renderer showing animated solar system
- Orbit ellipses, planet dots with labels, Sun glow, grid, scale bar, pan/zoom controls
- Time controls (play/pause, 5 speed levels, date picker) driving live simulation
- 2D/3D view toggle (3D placeholder for Threlte integration)

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

frontend/vite.config.ts

@@ -0,0 +1,23 @@
+import { sveltekit } from '@sveltejs/kit/vite';
+import { defineConfig } from 'vite';
+import wasm from 'vite-plugin-wasm';
+import tailwindcss from '@tailwindcss/vite';
+
+export default defineConfig({
+	plugins: [
+		wasm(),
+		tailwindcss(),
+		sveltekit(),
+	],
+	build: {
+		target: 'esnext',
+	},
+	optimizeDeps: {
+		exclude: ['mass-driver-wasm'],
+	},
+	server: {
+		fs: {
+			allow: ['..'],
+		},
+	},
+});