LearnSpace: full-stack educational whiteboard platform

Node.js/Express backend + vanilla JS frontend.
Features: real-time collaborative whiteboard (SSE), multi-page support,
LaTeX formulas, shapes/connectors, coordinate systems, number lines,
compass, zoom/pan, Catmull-Rom pencil smoothing, ruler/protractor with
rotation & resize controls, minimap navigation overlay, auto-measurements,
multi-page thumbnails sidebar, PNG export, page templates.
Student/teacher workflows: classes, assignments, library, dashboard.
Mobile responsive. SQLite (better-sqlite3).

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

backend/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "learnspace-backend",
+  "version": "1.0.0",
+  "description": "LearnSpace backend",
+  "main": "src/server.js",
+  "scripts": {
+    "start": "node src/server.js",
+    "dev": "nodemon src/server.js",
+    "migrate": "node src/db/migrate.js",
+    "seed": "node src/db/seed.js",
+    "test": "node --test tests/*.test.js"
+  },
+  "dependencies": {
+    "bcryptjs": "^2.4.3",
+"compression": "^1.8.1",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.5",
+    "express": "^4.18.3",
+    "jsonwebtoken": "^9.0.2",
+    "multer": "^2.1.1",
+    "sharp": "^0.34.5"
+  },
+  "devDependencies": {
+    "nodemon": "^3.1.0"
+  }
+}