feat: initialize frontend with React and Vite setup

- Added React and Vite configuration files.
- Created main entry point for the application.
- Included global CSS styles for theming and layout.
- Added SVG assets for React and Vite logos.

octofit-tracker/backend/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "octofit-tracker-backend",
+  "version": "1.0.0",
+  "private": true,
+  "main": "dist/index.js",
+  "scripts": {
+    "dev": "ts-node-dev --respawn --transpile-only src/index.ts",
+    "build": "tsc -p tsconfig.json",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "express": "^5.2.1",
+    "mongoose": "^9.7.1"
+  },
+  "devDependencies": {
+    "@types/express": "^5.0.6",
+    "@types/node": "^26.0.0",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^6.0.3"
+  }
+}

octofit-tracker/backend/src/index.ts

@@ -0,0 +1,26 @@
+import express from "express";
+import mongoose from "mongoose";
+
+const app = express();
+const port = Number(process.env.PORT) || 8000;
+const mongoUri = process.env.MONGO_URI || "mongodb://127.0.0.1:27017/octofit_tracker";
+
+app.use(express.json());
+
+app.get("/health", (_req, res) => {
+  res.status(200).json({ status: "ok" });
+});
+
+const start = async () => {
+  try {
+    await mongoose.connect(mongoUri);
+    app.listen(port, () => {
+      console.log(`OctoFit backend listening on http://localhost:${port}`);
+    });
+  } catch (error) {
+    console.error("Failed to start backend:", error);
+    process.exit(1);
+  }
+};
+
+void start();

octofit-tracker/backend/tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "Node16",
+    "moduleResolution": "Node16",
+    "outDir": "dist",
+    "rootDir": "src",
+    "strict": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "skipLibCheck": true
+  },
+  "include": ["src"]
+}