feat: add CEO role to all dropdowns and access lists

- Registration form: added 5 new role options to dropdown
- Sidebar: new roles get proper nav access via ALL_ROLES/LEADER_ROLES
- Dashboard: isLeader check expanded to include new leadership roles
- Shared/Pages: role badge colors added for all new roles
- Invite modal: expanded role dropdown

Dockerfile

@@ -0,0 +1,20 @@
+# Build Stage
+FROM node:22-alpine as build
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+RUN npm run build
+
+# Production Stage
+FROM nginx:alpine
+
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]

docker-compose.yml

@@ -0,0 +1,52 @@
+version: '3.8'
+
+services:
+  mysql:
+    image: mysql:8.0
+    container_name: scrum-mysql
+    restart: unless-stopped
+    environment:
+      MYSQL_ROOT_PASSWORD: scrumpass
+      MYSQL_DATABASE: scrum_manager
+    ports:
+      - "3306:3306"
+    volumes:
+      - mysql_data:/var/lib/mysql
+    healthcheck:
+      test: [ "CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-pscrumpass" ]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
+  backend:
+    build:
+      context: ./server
+      dockerfile: Dockerfile
+    container_name: scrum-backend
+    restart: unless-stopped
+    ports:
+      - "3001:3001"
+    environment:
+      DB_HOST: mysql
+      DB_PORT: 3306
+      DB_USER: root
+      DB_PASSWORD: scrumpass
+      DB_NAME: scrum_manager
+      PORT: 3001
+    depends_on:
+      mysql:
+        condition: service_healthy
+
+  frontend:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: scrum-frontend
+    restart: unless-stopped
+    ports:
+      - "80:80"
+    depends_on:
+      - backend
+
+volumes:
+  mysql_data:

k8s/base/backend/deployment.yaml

@@ -0,0 +1,84 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: backend
+  labels:
+    app.kubernetes.io/name: backend
+    app.kubernetes.io/component: api
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: backend
+      app.kubernetes.io/component: api
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: backend
+        app.kubernetes.io/component: api
+    spec:
+      initContainers:
+        - name: wait-for-mysql
+          image: busybox:1.36
+          command:
+            - sh
+            - -c
+            - |
+              echo "Waiting for MySQL to be ready..."
+              until nc -z mysql 3306; do
+                echo "MySQL is not ready yet, retrying in 3s..."
+                sleep 3
+              done
+              echo "MySQL is ready!"
+      containers:
+        - name: backend
+          image: scrum-backend:latest
+          imagePullPolicy: IfNotPresent
+          ports:
+            - containerPort: 3001
+              name: http
+          env:
+            - name: DB_HOST
+              value: mysql
+            - name: DB_PORT
+              value: "3306"
+            - name: DB_USER
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: DB_USER
+            - name: DB_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: DB_PASSWORD
+            - name: DB_NAME
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: DB_NAME
+            - name: PORT
+              value: "3001"
+          resources:
+            requests:
+              cpu: 100m
+              memory: 128Mi
+            limits:
+              cpu: 500m
+              memory: 256Mi
+          livenessProbe:
+            httpGet:
+              path: /api/health
+              port: http
+            initialDelaySeconds: 15
+            periodSeconds: 10
+            timeoutSeconds: 3
+            failureThreshold: 3
+          readinessProbe:
+            httpGet:
+              path: /api/health
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            timeoutSeconds: 3
+            failureThreshold: 5

k8s/base/backend/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: backend
+  labels:
+    app.kubernetes.io/name: backend
+    app.kubernetes.io/component: api
+spec:
+  type: ClusterIP
+  ports:
+    - port: 3001
+      targetPort: 3001
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: backend
+    app.kubernetes.io/component: api

k8s/base/frontend/configmap.yaml

@@ -0,0 +1,31 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: frontend-nginx-config
+  labels:
+    app.kubernetes.io/name: frontend
+    app.kubernetes.io/component: web
+data:
+  default.conf: |
+    server {
+        listen 80;
+        server_name localhost;
+
+        root /usr/share/nginx/html;
+        index index.html;
+
+        # Serve static files
+        location / {
+            try_files $uri $uri/ /index.html;
+        }
+
+        # Proxy API requests to backend service
+        location /api/ {
+            proxy_pass http://backend:3001;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection 'upgrade';
+            proxy_set_header Host $host;
+            proxy_cache_bypass $http_upgrade;
+        }
+    }

k8s/base/frontend/deployment.yaml

@@ -0,0 +1,58 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: frontend
+  labels:
+    app.kubernetes.io/name: frontend
+    app.kubernetes.io/component: web
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: frontend
+      app.kubernetes.io/component: web
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: frontend
+        app.kubernetes.io/component: web
+    spec:
+      containers:
+        - name: frontend
+          image: scrum-frontend:latest
+          imagePullPolicy: IfNotPresent
+          ports:
+            - containerPort: 80
+              name: http
+          volumeMounts:
+            - name: nginx-config
+              mountPath: /etc/nginx/conf.d/default.conf
+              subPath: default.conf
+              readOnly: true
+          resources:
+            requests:
+              cpu: 50m
+              memory: 64Mi
+            limits:
+              cpu: 200m
+              memory: 128Mi
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 3
+            failureThreshold: 3
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            timeoutSeconds: 3
+            failureThreshold: 3
+      volumes:
+        - name: nginx-config
+          configMap:
+            name: frontend-nginx-config

k8s/base/frontend/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  labels:
+    app.kubernetes.io/name: frontend
+    app.kubernetes.io/component: web
+spec:
+  type: NodePort
+  ports:
+    - port: 80
+      targetPort: 80
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: frontend
+    app.kubernetes.io/component: web

k8s/base/kustomization.yaml

@@ -0,0 +1,25 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: scrum-manager
+
+labels:
+  - pairs:
+      app.kubernetes.io/part-of: scrum-manager
+      app.kubernetes.io/managed-by: kustomize
+    includeSelectors: true
+
+resources:
+  - namespace.yaml
+  # MySQL
+  - mysql/secret.yaml
+  - mysql/pvc.yaml
+  - mysql/deployment.yaml
+  - mysql/service.yaml
+  # Backend
+  - backend/deployment.yaml
+  - backend/service.yaml
+  # Frontend
+  - frontend/configmap.yaml
+  - frontend/deployment.yaml
+  - frontend/service.yaml

k8s/base/mysql/deployment.yaml

@@ -0,0 +1,74 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mysql
+  labels:
+    app.kubernetes.io/name: mysql
+    app.kubernetes.io/component: database
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate # MySQL requires Recreate since PVC is ReadWriteOnce
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: mysql
+      app.kubernetes.io/component: database
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: mysql
+        app.kubernetes.io/component: database
+    spec:
+      containers:
+        - name: mysql
+          image: mysql:8.0
+          ports:
+            - containerPort: 3306
+              name: mysql
+          env:
+            - name: MYSQL_ROOT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: MYSQL_ROOT_PASSWORD
+            - name: MYSQL_DATABASE
+              valueFrom:
+                secretKeyRef:
+                  name: mysql-secret
+                  key: DB_NAME
+          volumeMounts:
+            - name: mysql-data
+              mountPath: /var/lib/mysql
+          resources:
+            requests:
+              cpu: 250m
+              memory: 512Mi
+            limits:
+              cpu: "1"
+              memory: 1Gi
+          livenessProbe:
+            exec:
+              command:
+                - mysqladmin
+                - ping
+                - -h
+                - localhost
+            initialDelaySeconds: 30
+            periodSeconds: 10
+            timeoutSeconds: 5
+            failureThreshold: 3
+          readinessProbe:
+            exec:
+              command:
+                - mysqladmin
+                - ping
+                - -h
+                - localhost
+            initialDelaySeconds: 10
+            periodSeconds: 5
+            timeoutSeconds: 3
+            failureThreshold: 5
+      volumes:
+        - name: mysql-data
+          persistentVolumeClaim:
+            claimName: mysql-data-pvc

k8s/base/mysql/pvc.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: mysql-data-pvc
+  labels:
+    app.kubernetes.io/name: mysql
+    app.kubernetes.io/component: database
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi

k8s/base/mysql/secret.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: mysql-secret
+  labels:
+    app.kubernetes.io/name: mysql
+    app.kubernetes.io/component: database
+type: Opaque
+data:
+  # Base64 encoded values — change these for production!
+  # echo -n 'scrumpass' | base64 => c2NydW1wYXNz
+  # echo -n 'root' | base64 => cm9vdA==
+  # echo -n 'scrum_manager' | base64 => c2NydW1fbWFuYWdlcg==
+  MYSQL_ROOT_PASSWORD: c2NydW1wYXNz
+  DB_USER: cm9vdA==
+  DB_PASSWORD: c2NydW1wYXNz
+  DB_NAME: c2NydW1fbWFuYWdlcg==

k8s/base/mysql/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: mysql
+  labels:
+    app.kubernetes.io/name: mysql
+    app.kubernetes.io/component: database
+spec:
+  type: ClusterIP
+  ports:
+    - port: 3306
+      targetPort: 3306
+      protocol: TCP
+      name: mysql
+  selector:
+    app.kubernetes.io/name: mysql
+    app.kubernetes.io/component: database

k8s/base/namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: scrum-manager
+  labels:
+    app.kubernetes.io/part-of: scrum-manager

nginx.conf

@@ -0,0 +1,23 @@
+
+server {
+    listen 80;
+    server_name localhost;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Serve static files
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Proxy API requests to backend
+    location /api/ {
+        proxy_pass http://backend:3001;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_cache_bypass $http_upgrade;
+    }
+}

package.json

@@ -7,7 +7,9 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test": "vitest",
+    "test:integration": "vitest -c vitest.integration.config.js"
   },
   "dependencies": {
     "react": "^19.2.0",
@@ -16,6 +18,9 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@testing-library/user-event": "^14.6.1",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
@@ -24,8 +29,11 @@
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
+    "jsdom": "^28.1.0",
+    "node-fetch": "^3.3.2",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.48.0",
-    "vite": "^7.3.1"
+    "vite": "^7.3.1",
+    "vitest": "^4.0.18"
   }
-}
+}

server/Dockerfile

@@ -0,0 +1,12 @@
+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci --only=production
+
+COPY . .
+
+EXPOSE 3001
+
+CMD ["node", "index.js"]

server/db.js

@@ -0,0 +1,107 @@
+import mysql from 'mysql2/promise';
+
+const pool = mysql.createPool({
+  host: process.env.DB_HOST || 'localhost',
+  port: parseInt(process.env.DB_PORT || '3306'),
+  user: process.env.DB_USER || 'root',
+  password: process.env.DB_PASSWORD || 'scrumpass',
+  database: process.env.DB_NAME || 'scrum_manager',
+  waitForConnections: true,
+  connectionLimit: 10,
+  queueLimit: 0,
+});
+
+export async function initDB() {
+  const conn = await pool.getConnection();
+  try {
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS users (
+        id VARCHAR(36) PRIMARY KEY,
+        name VARCHAR(255) NOT NULL,
+        role VARCHAR(50) NOT NULL DEFAULT 'employee',
+        email VARCHAR(255) NOT NULL UNIQUE,
+        password_hash VARCHAR(255) NOT NULL,
+        color VARCHAR(20) DEFAULT '#818cf8',
+        avatar VARCHAR(10) DEFAULT '',
+        dept VARCHAR(100) DEFAULT ''
+      )
+    `);
+
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS tasks (
+        id VARCHAR(36) PRIMARY KEY,
+        title VARCHAR(500) NOT NULL,
+        description TEXT,
+        status ENUM('todo','inprogress','review','done') NOT NULL DEFAULT 'todo',
+        priority ENUM('critical','high','medium','low') NOT NULL DEFAULT 'medium',
+        assignee_id VARCHAR(36),
+        reporter_id VARCHAR(36),
+        due_date DATE,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        FOREIGN KEY (assignee_id) REFERENCES users(id) ON DELETE SET NULL,
+        FOREIGN KEY (reporter_id) REFERENCES users(id) ON DELETE SET NULL
+      )
+    `);
+
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS subtasks (
+        id VARCHAR(36) PRIMARY KEY,
+        task_id VARCHAR(36) NOT NULL,
+        title VARCHAR(500) NOT NULL,
+        done BOOLEAN DEFAULT FALSE,
+        FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE
+      )
+    `);
+
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS comments (
+        id VARCHAR(36) PRIMARY KEY,
+        task_id VARCHAR(36) NOT NULL,
+        user_id VARCHAR(36),
+        text TEXT NOT NULL,
+        timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE,
+        FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE SET NULL
+      )
+    `);
+
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS activities (
+        id VARCHAR(36) PRIMARY KEY,
+        task_id VARCHAR(36) NOT NULL,
+        text TEXT NOT NULL,
+        timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE
+      )
+    `);
+
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS task_tags (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        task_id VARCHAR(36) NOT NULL,
+        tag VARCHAR(100) NOT NULL,
+        FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE,
+        UNIQUE KEY unique_task_tag (task_id, tag)
+      )
+    `);
+
+    await conn.query(`
+      CREATE TABLE IF NOT EXISTS dependencies (
+        id VARCHAR(36) PRIMARY KEY,
+        task_id VARCHAR(36) NOT NULL,
+        depends_on_user_id VARCHAR(36),
+        description TEXT NOT NULL,
+        resolved BOOLEAN DEFAULT FALSE,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE,
+        FOREIGN KEY (depends_on_user_id) REFERENCES users(id) ON DELETE SET NULL
+      )
+    `);
+
+    console.log('✅ Database tables initialized');
+  } finally {
+    conn.release();
+  }
+}
+
+export default pool;

server/index.js

@@ -0,0 +1,42 @@
+import express from 'express';
+import cors from 'cors';
+import { initDB } from './db.js';
+import authRoutes from './routes/auth.js';
+import taskRoutes from './routes/tasks.js';
+
+const app = express();
+const PORT = process.env.PORT || 3001;
+
+app.use(cors());
+app.use(express.json());
+
+// Routes
+app.use('/api/auth', authRoutes);
+app.use('/api/tasks', taskRoutes);
+
+// Health check
+app.get('/api/health', (_req, res) => {
+    res.json({ status: 'ok', timestamp: new Date().toISOString() });
+});
+
+// Initialize DB and start server
+// Initialize DB and start server
+async function start() {
+    try {
+        await initDB();
+        if (process.env.NODE_ENV !== 'test') {
+            app.listen(PORT, () => {
+                console.log(`🚀 Backend server running on port ${PORT}`);
+            });
+        }
+    } catch (err) {
+        console.error('❌ Failed to start server:', err);
+        process.exit(1);
+    }
+}
+
+if (process.env.NODE_ENV !== 'test') {
+    start();
+}
+
+export { app, start };

server/package.json

@@ -0,0 +1,20 @@
+{
+    "name": "scrum-manager-backend",
+    "version": "1.0.0",
+    "private": true,
+    "type": "module",
+    "scripts": {
+        "start": "node index.js",
+        "test": "vitest"
+    },
+    "dependencies": {
+        "bcryptjs": "^3.0.2",
+        "cors": "^2.8.5",
+        "express": "^5.1.0",
+        "mysql2": "^3.14.1"
+    },
+    "devDependencies": {
+        "supertest": "^7.2.2",
+        "vitest": "^4.0.18"
+    }
+}

server/routes/auth.js

@@ -0,0 +1,79 @@
+import { Router } from 'express';
+import bcrypt from 'bcryptjs';
+import pool from '../db.js';
+import { randomUUID } from 'crypto';
+
+const router = Router();
+
+// POST /api/auth/login
+router.post('/login', async (req, res) => {
+    try {
+        const { email, password } = req.body;
+        if (!email || !password) {
+            return res.status(400).json({ error: 'Email and password required' });
+        }
+
+        const [rows] = await pool.query('SELECT * FROM users WHERE email = ?', [email]);
+        if (rows.length === 0) {
+            return res.status(401).json({ error: 'Invalid email or password' });
+        }
+
+        const user = rows[0];
+        const valid = await bcrypt.compare(password, user.password_hash);
+        if (!valid) {
+            return res.status(401).json({ error: 'Invalid email or password' });
+        }
+
+        res.json({
+            id: user.id, name: user.name, role: user.role, email: user.email,
+            color: user.color, avatar: user.avatar, dept: user.dept,
+        });
+    } catch (err) {
+        console.error('Login error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// POST /api/auth/register
+router.post('/register', async (req, res) => {
+    try {
+        const { name, email, password, role, dept } = req.body;
+        if (!name || !email || !password) {
+            return res.status(400).json({ error: 'Name, email and password required' });
+        }
+
+        const [existing] = await pool.query('SELECT id FROM users WHERE email = ?', [email]);
+        if (existing.length > 0) {
+            return res.status(409).json({ error: 'Email already registered' });
+        }
+
+        const id = randomUUID();
+        const password_hash = await bcrypt.hash(password, 10);
+        const avatar = name.split(' ').map(w => w[0]).join('').substring(0, 2).toUpperCase();
+        const colors = ['#818cf8', '#f59e0b', '#34d399', '#f472b6', '#fb923c', '#60a5fa', '#a78bfa'];
+        const color = colors[Math.floor(Math.random() * colors.length)];
+
+        await pool.query(
+            'INSERT INTO users (id, name, role, email, password_hash, color, avatar, dept) VALUES (?, ?, ?, ?, ?, ?, ?, ?)',
+            [id, name, role || 'employee', email, password_hash, color, avatar, dept || '']
+        );
+
+        res.status(201).json({ id, name, role: role || 'employee', email, color, avatar, dept: dept || '' });
+    } catch (err) {
+        console.error('Register error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// GET /api/auth/users
+router.get('/users', async (_req, res) => {
+    try {
+        const [rows] = await pool.query('SELECT id, name, role, email, color, avatar, dept FROM users');
+        res.json(rows);
+    } catch (err) {
+        console.error('Get users error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+export default router;

server/routes/tasks.js

@@ -0,0 +1,257 @@
+import { Router } from 'express';
+import pool from '../db.js';
+import { randomUUID } from 'crypto';
+
+const router = Router();
+
+// Helper: fetch full task with subtasks, comments, activities, tags, dependencies
+async function getFullTask(taskId) {
+    const [taskRows] = await pool.query('SELECT * FROM tasks WHERE id = ?', [taskId]);
+    if (taskRows.length === 0) return null;
+
+    const task = taskRows[0];
+    const [subtasks] = await pool.query('SELECT id, title, done FROM subtasks WHERE task_id = ? ORDER BY id', [taskId]);
+    const [comments] = await pool.query('SELECT id, user_id AS userId, text, timestamp FROM comments WHERE task_id = ? ORDER BY timestamp', [taskId]);
+    const [activities] = await pool.query('SELECT id, text, timestamp FROM activities WHERE task_id = ? ORDER BY timestamp', [taskId]);
+    const [tagRows] = await pool.query('SELECT tag FROM task_tags WHERE task_id = ?', [taskId]);
+    const [depRows] = await pool.query('SELECT id, depends_on_user_id AS dependsOnUserId, description, resolved FROM dependencies WHERE task_id = ? ORDER BY created_at', [taskId]);
+
+    return {
+        id: task.id,
+        title: task.title,
+        description: task.description || '',
+        status: task.status,
+        priority: task.priority,
+        assignee: task.assignee_id || '',
+        reporter: task.reporter_id || '',
+        dueDate: task.due_date ? task.due_date.toISOString().split('T')[0] : '',
+        tags: tagRows.map(r => r.tag),
+        subtasks: subtasks.map(s => ({ id: s.id, title: s.title, done: !!s.done })),
+        comments: comments.map(c => ({ id: c.id, userId: c.userId, text: c.text, timestamp: c.timestamp?.toISOString() || '' })),
+        activity: activities.map(a => ({ id: a.id, text: a.text, timestamp: a.timestamp?.toISOString() || '' })),
+        dependencies: depRows.map(d => ({ id: d.id, dependsOnUserId: d.dependsOnUserId || '', description: d.description, resolved: !!d.resolved })),
+    };
+}
+
+// GET /api/tasks
+router.get('/', async (_req, res) => {
+    try {
+        const [taskRows] = await pool.query('SELECT id FROM tasks ORDER BY created_at DESC');
+        const tasks = await Promise.all(taskRows.map(t => getFullTask(t.id)));
+        res.json(tasks.filter(Boolean));
+    } catch (err) {
+        console.error('Get tasks error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// POST /api/tasks
+router.post('/', async (req, res) => {
+    const conn = await pool.getConnection();
+    try {
+        await conn.beginTransaction();
+        const { title, description, status, priority, assignee, reporter, dueDate, tags, subtasks, dependencies } = req.body;
+        const id = randomUUID();
+
+        await conn.query(
+            'INSERT INTO tasks (id, title, description, status, priority, assignee_id, reporter_id, due_date) VALUES (?, ?, ?, ?, ?, ?, ?, ?)',
+            [id, title, description || '', status || 'todo', priority || 'medium', assignee || null, reporter || null, dueDate || null]
+        );
+
+        // Insert tags
+        if (tags && tags.length > 0) {
+            const tagValues = tags.map(tag => [id, tag]);
+            await conn.query('INSERT INTO task_tags (task_id, tag) VALUES ?', [tagValues]);
+        }
+
+        // Insert subtasks
+        if (subtasks && subtasks.length > 0) {
+            for (const st of subtasks) {
+                await conn.query('INSERT INTO subtasks (id, task_id, title, done) VALUES (?, ?, ?, ?)',
+                    [st.id || randomUUID(), id, st.title, st.done || false]);
+            }
+        }
+
+        // Insert dependencies
+        if (dependencies && dependencies.length > 0) {
+            for (const dep of dependencies) {
+                await conn.query(
+                    'INSERT INTO dependencies (id, task_id, depends_on_user_id, description, resolved) VALUES (?, ?, ?, ?, ?)',
+                    [randomUUID(), id, dep.dependsOnUserId || null, dep.description, false]
+                );
+            }
+        }
+
+        // Add creation activity
+        const actId = randomUUID();
+        await conn.query('INSERT INTO activities (id, task_id, text) VALUES (?, ?, ?)',
+            [actId, id, '📝 Task created']);
+
+        await conn.commit();
+        const task = await getFullTask(id);
+        res.status(201).json(task);
+    } catch (err) {
+        await conn.rollback();
+        console.error('Create task error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    } finally {
+        conn.release();
+    }
+});
+
+// PUT /api/tasks/:id
+router.put('/:id', async (req, res) => {
+    const conn = await pool.getConnection();
+    try {
+        await conn.beginTransaction();
+        const { title, description, status, priority, assignee, reporter, dueDate, tags } = req.body;
+        const taskId = req.params.id;
+
+        // Check task exists
+        const [existing] = await conn.query('SELECT id FROM tasks WHERE id = ?', [taskId]);
+        if (existing.length === 0) {
+            await conn.rollback();
+            return res.status(404).json({ error: 'Task not found' });
+        }
+
+        await conn.query(
+            `UPDATE tasks SET title = COALESCE(?, title), description = COALESCE(?, description),
+       status = COALESCE(?, status), priority = COALESCE(?, priority),
+       assignee_id = COALESCE(?, assignee_id), reporter_id = COALESCE(?, reporter_id),
+       due_date = COALESCE(?, due_date) WHERE id = ?`,
+            [title, description, status, priority, assignee, reporter, dueDate, taskId]
+        );
+
+        // Update tags if provided
+        if (tags !== undefined) {
+            await conn.query('DELETE FROM task_tags WHERE task_id = ?', [taskId]);
+            if (tags.length > 0) {
+                const tagValues = tags.map(tag => [taskId, tag]);
+                await conn.query('INSERT INTO task_tags (task_id, tag) VALUES ?', [tagValues]);
+            }
+        }
+
+        await conn.commit();
+        const task = await getFullTask(taskId);
+        res.json(task);
+    } catch (err) {
+        await conn.rollback();
+        console.error('Update task error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    } finally {
+        conn.release();
+    }
+});
+
+// POST /api/tasks/:id/subtasks
+router.post('/:id/subtasks', async (req, res) => {
+    try {
+        const { title } = req.body;
+        const id = randomUUID();
+        await pool.query('INSERT INTO subtasks (id, task_id, title, done) VALUES (?, ?, ?, ?)',
+            [id, req.params.id, title, false]);
+        res.status(201).json({ id, title, done: false });
+    } catch (err) {
+        console.error('Add subtask error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// PUT /api/tasks/:id/subtasks/:sid
+router.put('/:id/subtasks/:sid', async (req, res) => {
+    try {
+        const { done } = req.body;
+        await pool.query('UPDATE subtasks SET done = ? WHERE id = ? AND task_id = ?',
+            [done, req.params.sid, req.params.id]);
+        res.json({ success: true });
+    } catch (err) {
+        console.error('Toggle subtask error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// POST /api/tasks/:id/comments
+router.post('/:id/comments', async (req, res) => {
+    try {
+        const { userId, text } = req.body;
+        const id = randomUUID();
+        const timestamp = new Date();
+        await pool.query('INSERT INTO comments (id, task_id, user_id, text, timestamp) VALUES (?, ?, ?, ?, ?)',
+            [id, req.params.id, userId, text, timestamp]);
+        res.status(201).json({ id, userId, text, timestamp: timestamp.toISOString() });
+    } catch (err) {
+        console.error('Add comment error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// POST /api/tasks/:id/activity
+router.post('/:id/activity', async (req, res) => {
+    try {
+        const { text } = req.body;
+        const id = randomUUID();
+        const timestamp = new Date();
+        await pool.query('INSERT INTO activities (id, task_id, text, timestamp) VALUES (?, ?, ?, ?)',
+            [id, req.params.id, text, timestamp]);
+        res.status(201).json({ id, text, timestamp: timestamp.toISOString() });
+    } catch (err) {
+        console.error('Add activity error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// --- DEPENDENCY ROUTES ---
+
+// POST /api/tasks/:id/dependencies
+router.post('/:id/dependencies', async (req, res) => {
+    try {
+        const { dependsOnUserId, description } = req.body;
+        const id = randomUUID();
+        await pool.query(
+            'INSERT INTO dependencies (id, task_id, depends_on_user_id, description, resolved) VALUES (?, ?, ?, ?, ?)',
+            [id, req.params.id, dependsOnUserId || null, description, false]
+        );
+        res.status(201).json({ id, dependsOnUserId: dependsOnUserId || '', description, resolved: false });
+    } catch (err) {
+        console.error('Add dependency error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// PUT /api/tasks/:id/dependencies/:depId
+router.put('/:id/dependencies/:depId', async (req, res) => {
+    try {
+        const { resolved } = req.body;
+        await pool.query('UPDATE dependencies SET resolved = ? WHERE id = ? AND task_id = ?',
+            [resolved, req.params.depId, req.params.id]);
+        res.json({ success: true });
+    } catch (err) {
+        console.error('Update dependency error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// DELETE /api/tasks/:id/dependencies/:depId
+router.delete('/:id/dependencies/:depId', async (req, res) => {
+    try {
+        await pool.query('DELETE FROM dependencies WHERE id = ? AND task_id = ?',
+            [req.params.depId, req.params.id]);
+        res.json({ success: true });
+    } catch (err) {
+        console.error('Delete dependency error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+// DELETE /api/tasks/:id
+router.delete('/:id', async (req, res) => {
+    try {
+        await pool.query('DELETE FROM tasks WHERE id = ?', [req.params.id]);
+        res.json({ success: true });
+    } catch (err) {
+        console.error('Delete task error:', err);
+        res.status(500).json({ error: 'Internal server error' });
+    }
+});
+
+export default router;

server/tests/auth.test.js

@@ -0,0 +1,127 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import request from 'supertest';
+import { app } from '../index.js';
+import pool from '../db.js';
+import bcrypt from 'bcryptjs';
+
+// Mock dependencies
+vi.mock('../db.js', () => ({
+    default: {
+        query: vi.fn(),
+    },
+    initDB: vi.fn()
+}));
+
+vi.mock('bcryptjs', () => ({
+    default: {
+        compare: vi.fn(),
+        hash: vi.fn()
+    }
+}));
+
+describe('Auth Routes', () => {
+    beforeEach(() => {
+        vi.clearAllMocks();
+    });
+
+    describe('POST /api/auth/login', () => {
+        it('logs in successfully with correct credentials', async () => {
+            const mockUser = {
+                id: 'u1',
+                name: 'Test User',
+                email: 'test@test.com',
+                password_hash: 'hashed_password',
+                role: 'employee',
+                dept: 'dev'
+            };
+
+            // Mock DB response
+            pool.query.mockResolvedValue([[mockUser]]);
+            // Mock bcrypt comparison
+            bcrypt.compare.mockResolvedValue(true);
+
+            const res = await request(app)
+                .post('/api/auth/login')
+                .send({ email: 'test@test.com', password: 'password' });
+
+            expect(res.status).toBe(200);
+            expect(res.body).toEqual(expect.objectContaining({
+                id: 'u1',
+                email: 'test@test.com'
+            }));
+            expect(res.body).not.toHaveProperty('password_hash');
+        });
+
+        it('returns 401 for invalid password', async () => {
+            const mockUser = {
+                id: 'u1',
+                email: 'test@test.com',
+                password_hash: 'hashed_password'
+            };
+
+            pool.query.mockResolvedValue([[mockUser]]);
+            bcrypt.compare.mockResolvedValue(false);
+
+            const res = await request(app)
+                .post('/api/auth/login')
+                .send({ email: 'test@test.com', password: 'wrong' });
+
+            expect(res.status).toBe(401);
+            expect(res.body).toEqual({ error: 'Invalid email or password' });
+        });
+
+        it('returns 401 for user not found', async () => {
+            pool.query.mockResolvedValue([[]]); // Empty array
+
+            const res = await request(app)
+                .post('/api/auth/login')
+                .send({ email: 'notfound@test.com', password: 'password' });
+
+            expect(res.status).toBe(401);
+        });
+    });
+
+    describe('POST /api/auth/register', () => {
+        it('registers a new user successfully', async () => {
+            pool.query.mockResolvedValueOnce([[]]); // Check existing email (empty)
+            pool.query.mockResolvedValueOnce({}); // Insert success
+
+            bcrypt.hash.mockResolvedValue('hashed_new_password');
+
+            const newUser = {
+                name: 'New User',
+                email: 'new@test.com',
+                password: 'password',
+                role: 'employee'
+            };
+
+            const res = await request(app)
+                .post('/api/auth/register')
+                .send(newUser);
+
+            expect(res.status).toBe(201);
+            expect(res.body).toEqual(expect.objectContaining({
+                name: 'New User',
+                email: 'new@test.com'
+            }));
+
+            // Verify DB insert called
+            expect(pool.query).toHaveBeenCalledTimes(2);
+            expect(pool.query).toHaveBeenLastCalledWith(
+                expect.stringContaining('INSERT INTO users'),
+                expect.arrayContaining(['New User', 'employee', 'new@test.com', 'hashed_new_password'])
+            );
+        });
+
+        it('returns 409 if email already exists', async () => {
+            pool.query.mockResolvedValueOnce([[{ id: 'existing' }]]);
+
+            const res = await request(app)
+                .post('/api/auth/register')
+                .send({ name: 'User', email: 'existing@test.com', password: 'pw' });
+
+            expect(res.status).toBe(409);
+        });
+    });
+});

server/tests/tasks.test.js

@@ -0,0 +1,120 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import request from 'supertest';
+import { app } from '../index.js';
+import pool from '../db.js';
+
+// Mock DB
+const mockQuery = vi.fn();
+const mockRelease = vi.fn();
+const mockCommit = vi.fn();
+const mockRollback = vi.fn();
+const mockBeginTransaction = vi.fn();
+
+vi.mock('../db.js', () => ({
+    default: {
+        query: vi.fn(),
+        getConnection: vi.fn()
+    },
+    initDB: vi.fn()
+}));
+
+describe('Task Routes', () => {
+    beforeEach(() => {
+        vi.clearAllMocks();
+        mockQuery.mockReset(); // Important to clear implementations
+        pool.query = mockQuery;
+        pool.getConnection.mockResolvedValue({
+            query: mockQuery,
+            release: mockRelease,
+            beginTransaction: mockBeginTransaction,
+            commit: mockCommit,
+            rollback: mockRollback
+        });
+    });
+
+    describe('GET /api/tasks', () => {
+        it('returns list of tasks', async () => {
+            // Mock fetching task IDs
+            mockQuery.mockResolvedValueOnce([[{ id: 't1' }]]);
+
+            // Mock getFullTask queries for 't1'
+            // 1. Task details
+            mockQuery.mockResolvedValueOnce([[{ id: 't1', title: 'Task 1', status: 'todo' }]]); // Task
+            // 2. Subtasks
+            mockQuery.mockResolvedValueOnce([[]]); // Subtasks
+            // 3. Comments
+            mockQuery.mockResolvedValueOnce([[]]); // Comments
+            // 4. Activities
+            mockQuery.mockResolvedValueOnce([[]]); // Activities
+            // 5. Tags
+            mockQuery.mockResolvedValueOnce([[]]); // Tags
+            // 6. Dependencies
+            mockQuery.mockResolvedValueOnce([[]]); // Dependencies
+
+            const res = await request(app).get('/api/tasks');
+
+            expect(res.status).toBe(200);
+            expect(res.body).toHaveLength(1);
+            expect(res.body[0].title).toBe('Task 1');
+        });
+    });
+
+    describe('POST /api/tasks', () => {
+        it('creates a new task', async () => {
+            // Mock INSERTs (1: Task, 2: Activities) -> Return {}
+            mockQuery.mockResolvedValueOnce({}); // Insert task
+            mockQuery.mockResolvedValueOnce({}); // Insert activity
+
+            // getFullTask queries (3-8)
+            mockQuery.mockResolvedValueOnce([[{ id: 'new-id', title: 'New Task', status: 'todo' }]]); // Task
+            mockQuery.mockResolvedValueOnce([[]]); // Subtasks
+            mockQuery.mockResolvedValueOnce([[]]); // Comments
+            mockQuery.mockResolvedValueOnce([[]]); // Activities
+            mockQuery.mockResolvedValueOnce([[]]); // Tags
+            mockQuery.mockResolvedValueOnce([[]]); // Deps
+
+            const newTask = {
+                // For getFullTask called at end
+                title: 'New Task',
+                description: 'Desc',
+                status: 'todo'
+            };
+
+            const res = await request(app)
+                .post('/api/tasks')
+                .send(newTask);
+
+            expect(res.status).toBe(201);
+            expect(mockBeginTransaction).toHaveBeenCalled();
+            expect(mockCommit).toHaveBeenCalled();
+            expect(mockRelease).toHaveBeenCalled();
+        });
+
+        it('rolls back on error', async () => {
+            mockQuery.mockRejectedValue(new Error('DB Error'));
+
+            const res = await request(app)
+                .post('/api/tasks')
+                .send({ title: 'Task' });
+
+            expect(res.status).toBe(500);
+            expect(mockRollback).toHaveBeenCalled();
+            expect(mockRelease).toHaveBeenCalled();
+        });
+    });
+
+    describe('DELETE /api/tasks/:id', () => {
+        it('deletes a task', async () => {
+            mockQuery.mockResolvedValue({});
+
+            const res = await request(app).delete('/api/tasks/t1');
+
+            expect(res.status).toBe(200);
+            expect(mockQuery).toHaveBeenCalledWith(
+                expect.stringContaining('DELETE FROM tasks'),
+                ['t1']
+            );
+        });
+    });
+});

server/vitest.config.js

@@ -0,0 +1,9 @@
+
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+    test: {
+        globals: true,
+        environment: 'node',
+    },
+});

src/App.tsx

@@ -1,6 +1,7 @@
-import { useState } from 'react';
-import { SEED_TASKS } from './data';
+import { useState, useEffect } from 'react';
+import { apiFetchTasks, apiFetchUsers, apiCreateTask, apiUpdateTask, apiAddActivity, apiAddDependency, apiToggleDependency, apiRemoveDependency } from './api';
 import type { Task, User, Status } from './data';
+import { STATUS_LABELS } from './data';
 import { LoginPage } from './Login';
 import { Sidebar } from './Sidebar';
 import { TopNavbar, BottomToggleBar } from './NavBars';
@@ -24,7 +25,8 @@ const VIEW_PAGES = ['calendar', 'kanban', 'list'];
 export default function App() {
   const now = new Date();
   const [currentUser, setCurrentUser] = useState<User | null>(null);
-  const [tasks, setTasks] = useState<Task[]>(SEED_TASKS);
+  const [users, setUsers] = useState<User[]>([]);
+  const [tasks, setTasks] = useState<Task[]>([]);
   const [activePage, setActivePage] = useState('calendar');
   const [activeView, setActiveView] = useState('calendar');
   const [activeTask, setActiveTask] = useState<Task | null>(null);
@@ -34,13 +36,29 @@ export default function App() {
   const [calView, setCalView] = useState('month');
   const [filterUser, setFilterUser] = useState<string | null>(null);
   const [searchQuery, setSearchQuery] = useState('');
+  const [sidebarOpen, setSidebarOpen] = useState(false);
   const [quickAddDay, setQuickAddDay] = useState<{ date: string; rect: { top: number; left: number } } | null>(null);
+  const [loading, setLoading] = useState(false);
+
+  // Load data from API when user logs in
+  useEffect(() => {
+    if (!currentUser) return;
+    setLoading(true);
+    Promise.all([apiFetchTasks(), apiFetchUsers()])
+      .then(([fetchedTasks, fetchedUsers]) => {
+        setTasks(fetchedTasks);
+        setUsers(fetchedUsers);
+      })
+      .catch(err => console.error('Failed to load data:', err))
+      .finally(() => setLoading(false));
+  }, [currentUser]);
 
   if (!currentUser) return <LoginPage onLogin={u => { setCurrentUser(u); setActivePage('calendar'); setActiveView('calendar'); }} />;
 
   const handleNavigate = (page: string) => {
     setActivePage(page);
     if (VIEW_PAGES.includes(page)) setActiveView(page);
+    setSidebarOpen(false);
   };
 
   const handleViewChange = (view: string) => {
@@ -55,29 +73,117 @@ export default function App() {
     setQuickAddDay({ date, rect: { top: rect.bottom, left: rect.left } });
   };
 
-  const handleQuickAdd = (partial: Partial<Task>) => {
-    const task: Task = {
-      id: `t${Date.now()}`, title: partial.title || '', description: partial.description || '',
-      status: (partial.status || 'todo') as Status, priority: partial.priority || 'medium',
-      assignee: partial.assignee || 'u1', reporter: currentUser.id, dueDate: partial.dueDate || '',
-      tags: partial.tags || [], subtasks: partial.subtasks || [], comments: partial.comments || [],
-      activity: [{ id: `a${Date.now()}`, text: '📝 Task created', timestamp: new Date().toISOString() }],
-    };
-    setTasks(prev => [...prev, task]);
-    setQuickAddDay(null);
+  const handleQuickAdd = async (partial: Partial<Task>) => {
+    try {
+      const created = await apiCreateTask({
+        title: partial.title || '',
+        description: partial.description || '',
+        status: partial.status || 'todo',
+        priority: partial.priority || 'medium',
+        assignee: partial.assignee || currentUser.id,
+        reporter: currentUser.id,
+        dueDate: partial.dueDate || '',
+        tags: partial.tags || [],
+      });
+      setTasks(prev => [...prev, created]);
+      setQuickAddDay(null);
+    } catch (err) {
+      console.error('Failed to quick-add task:', err);
+    }
   };
 
-  const handleAddTask = (task: Task) => setTasks(prev => [...prev, { ...task, reporter: currentUser.id }]);
+  const handleAddTask = async (task: Task) => {
+    try {
+      const created = await apiCreateTask({
+        title: task.title,
+        description: task.description,
+        status: task.status,
+        priority: task.priority,
+        assignee: task.assignee,
+        reporter: currentUser.id,
+        dueDate: task.dueDate,
+        tags: task.tags,
+        dependencies: (task.dependencies || []).map(d => ({ dependsOnUserId: d.dependsOnUserId, description: d.description })),
+      });
+      setTasks(prev => [...prev, created]);
+    } catch (err) {
+      console.error('Failed to add task:', err);
+    }
+  };
 
-  const handleUpdateTask = (updated: Task) => {
-    setTasks(prev => prev.map(t => t.id === updated.id ? updated : t));
-    setActiveTask(updated);
+  const handleUpdateTask = async (updated: Task) => {
+    try {
+      const result = await apiUpdateTask(updated.id, {
+        title: updated.title,
+        description: updated.description,
+        status: updated.status,
+        priority: updated.priority,
+        assignee: updated.assignee,
+        reporter: updated.reporter,
+        dueDate: updated.dueDate,
+        tags: updated.tags,
+      });
+      setTasks(prev => prev.map(t => t.id === result.id ? result : t));
+      setActiveTask(result);
+    } catch (err) {
+      console.error('Failed to update task:', err);
+    }
   };
 
   const handleNewTask = () => { setAddModalDefaults({}); setShowAddModal(true); };
   const handleKanbanAdd = (status: Status) => { setAddModalDefaults({ status }); setShowAddModal(true); };
-  const handleToggleDone = (taskId: string) => {
-    setTasks(prev => prev.map(t => t.id === taskId ? { ...t, status: t.status === 'done' ? 'todo' : 'done' as Status } : t));
+  const handleToggleDone = async (taskId: string) => {
+    const task = tasks.find(t => t.id === taskId);
+    if (!task) return;
+    const newStatus = task.status === 'done' ? 'todo' : 'done';
+    try {
+      const result = await apiUpdateTask(taskId, { status: newStatus });
+      await apiAddActivity(taskId, `🔄 ${currentUser.name} changed status to ${newStatus}`);
+      setTasks(prev => prev.map(t => t.id === taskId ? result : t));
+    } catch (err) {
+      console.error('Failed to toggle done:', err);
+    }
+  };
+
+  const handleMoveTask = async (taskId: string, newStatus: Status) => {
+    const task = tasks.find(t => t.id === taskId);
+    if (!task || task.status === newStatus) return;
+    // Optimistic update
+    setTasks(prev => prev.map(t => t.id === taskId ? { ...t, status: newStatus } : t));
+    try {
+      const result = await apiUpdateTask(taskId, { status: newStatus });
+      await apiAddActivity(taskId, `🔄 ${currentUser.name} moved task to ${STATUS_LABELS[newStatus]}`);
+      setTasks(prev => prev.map(t => t.id === taskId ? result : t));
+    } catch (err) {
+      console.error('Failed to move task:', err);
+      // Revert on failure
+      setTasks(prev => prev.map(t => t.id === taskId ? task : t));
+    }
+  };
+
+  const handleAddDep = async (taskId: string, dep: { dependsOnUserId: string; description: string }) => {
+    try {
+      const newDep = await apiAddDependency(taskId, dep);
+      setTasks(prev => prev.map(t => t.id === taskId ? { ...t, dependencies: [...(t.dependencies || []), newDep] } : t));
+      if (activeTask?.id === taskId) setActiveTask(prev => prev ? { ...prev, dependencies: [...(prev.dependencies || []), newDep] } : prev);
+    } catch (err) { console.error('Failed to add dependency:', err); }
+  };
+
+  const handleToggleDep = async (taskId: string, depId: string, resolved: boolean) => {
+    try {
+      await apiToggleDependency(taskId, depId, resolved);
+      const updateDeps = (deps: any[]) => deps.map((d: any) => d.id === depId ? { ...d, resolved } : d);
+      setTasks(prev => prev.map(t => t.id === taskId ? { ...t, dependencies: updateDeps(t.dependencies || []) } : t));
+      if (activeTask?.id === taskId) setActiveTask(prev => prev ? { ...prev, dependencies: updateDeps(prev.dependencies || []) } : prev);
+    } catch (err) { console.error('Failed to toggle dependency:', err); }
+  };
+
+  const handleRemoveDep = async (taskId: string, depId: string) => {
+    try {
+      await apiRemoveDependency(taskId, depId);
+      setTasks(prev => prev.map(t => t.id === taskId ? { ...t, dependencies: (t.dependencies || []).filter((d: any) => d.id !== depId) } : t));
+      if (activeTask?.id === taskId) setActiveTask(prev => prev ? { ...prev, dependencies: (prev.dependencies || []).filter((d: any) => d.id !== depId) } : prev);
+    } catch (err) { console.error('Failed to remove dependency:', err); }
   };
 
   const displayPage = VIEW_PAGES.includes(activePage) ? activeView : activePage;
@@ -85,35 +191,45 @@ export default function App() {
 
   const pageTitle = PAGE_TITLES[displayPage] || 'Calendar';
 
+  if (loading) {
+    return (
+      <div className="app-shell" style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: '100vh' }}>
+        <p style={{ color: '#818cf8', fontSize: 18 }}>Loading...</p>
+      </div>
+    );
+  }
+
   return (
     <div className="app-shell">
       <TopNavbar title={pageTitle} filterUser={filterUser} onFilterChange={setFilterUser}
-        searchQuery={searchQuery} onSearch={setSearchQuery} onNewTask={handleNewTask} />
+        searchQuery={searchQuery} onSearch={setSearchQuery} onNewTask={handleNewTask}
+        onOpenSidebar={() => setSidebarOpen(true)} users={users} />
       <div className="app-body">
         <Sidebar currentUser={currentUser} activePage={activePage} onNavigate={handleNavigate}
-          onSignOut={() => { setCurrentUser(null); setActivePage('calendar'); setActiveView('calendar'); }} />
+          onSignOut={() => { setCurrentUser(null); setActivePage('calendar'); setActiveView('calendar'); setSidebarOpen(false); }}
+          isOpen={sidebarOpen} onClose={() => setSidebarOpen(false)} users={users} />
         <div className="main-content">
           {displayPage === 'calendar' && (
             <CalendarView tasks={tasks} currentUser={currentUser} calMonth={calMonth} calView={calView}
               onMonthChange={setCalMonth} onViewChange={setCalView} onTaskClick={handleTaskClick}
-              onDayClick={handleDayClick} filterUser={filterUser} searchQuery={searchQuery} />
+              onDayClick={handleDayClick} filterUser={filterUser} searchQuery={searchQuery} users={users} />
           )}
           {displayPage === 'kanban' && (
             <KanbanBoard tasks={tasks} currentUser={currentUser} onTaskClick={handleTaskClick}
-              onAddTask={handleKanbanAdd} filterUser={filterUser} searchQuery={searchQuery} />
+              onAddTask={handleKanbanAdd} onMoveTask={handleMoveTask} filterUser={filterUser} searchQuery={searchQuery} users={users} />
           )}
           {displayPage === 'list' && (
             <ListView tasks={tasks} currentUser={currentUser} onTaskClick={handleTaskClick}
-              filterUser={filterUser} searchQuery={searchQuery} onToggleDone={handleToggleDone} />
+              filterUser={filterUser} searchQuery={searchQuery} onToggleDone={handleToggleDone} users={users} />
           )}
-          {displayPage === 'dashboard' && <DashboardPage tasks={tasks} currentUser={currentUser} />}
+          {displayPage === 'dashboard' && <DashboardPage tasks={tasks} currentUser={currentUser} users={users} />}
           {displayPage === 'mytasks' && (
             <ListView tasks={filteredMyTasks} currentUser={currentUser} onTaskClick={handleTaskClick}
-              filterUser={null} searchQuery={searchQuery} onToggleDone={handleToggleDone} />
+              filterUser={null} searchQuery={searchQuery} onToggleDone={handleToggleDone} users={users} />
           )}
-          {displayPage === 'teamtasks' && <TeamTasksPage tasks={tasks} currentUser={currentUser} />}
-          {displayPage === 'reports' && <ReportsPage tasks={tasks} />}
-          {displayPage === 'members' && <MembersPage tasks={tasks} />}
+          {displayPage === 'teamtasks' && <TeamTasksPage tasks={tasks} currentUser={currentUser} users={users} />}
+          {displayPage === 'reports' && <ReportsPage tasks={tasks} users={users} />}
+          {displayPage === 'members' && <MembersPage tasks={tasks} users={users} />}
         </div>
       </div>
 
@@ -121,8 +237,8 @@ export default function App() {
         <BottomToggleBar activeView={activeView} onViewChange={handleViewChange} />
       )}
 
-      {activeTask && <TaskDrawer task={activeTask} currentUser={currentUser} onClose={() => setActiveTask(null)} onUpdate={handleUpdateTask} />}
-      {showAddModal && <AddTaskModal onClose={() => setShowAddModal(false)} onAdd={handleAddTask} defaultDate={addModalDefaults.date} defaultStatus={addModalDefaults.status} />}
+      {activeTask && <TaskDrawer task={activeTask} currentUser={currentUser} onClose={() => setActiveTask(null)} onUpdate={handleUpdateTask} onAddDependency={handleAddDep} onToggleDependency={handleToggleDep} onRemoveDependency={handleRemoveDep} users={users} />}
+      {showAddModal && <AddTaskModal onClose={() => setShowAddModal(false)} onAdd={handleAddTask} defaultDate={addModalDefaults.date} defaultStatus={addModalDefaults.status} users={users} currentUser={currentUser} />}
 
       {quickAddDay && (
         <div style={{ position: 'fixed', inset: 0, zIndex: 199 }} onClick={() => setQuickAddDay(null)}>
@@ -130,7 +246,7 @@ export default function App() {
             onClick={e => e.stopPropagation()}>
             <QuickAddPanel date={quickAddDay.date} onAdd={handleQuickAdd}
               onOpenFull={() => { setAddModalDefaults({ date: quickAddDay.date }); setShowAddModal(true); setQuickAddDay(null); }}
-              onClose={() => setQuickAddDay(null)} />
+              onClose={() => setQuickAddDay(null)} users={users} />
           </div>
         </div>
       )}

src/Calendar.tsx

@@ -1,13 +1,13 @@
 import { useState } from 'react';
 import type { Task, User } from './data';
-import { USERS, PRIORITY_COLORS } from './data';
+import { PRIORITY_COLORS } from './data';
 import { Avatar } from './Shared';
 
 interface CalendarProps {
     tasks: Task[]; currentUser: User; calMonth: { year: number; month: number }; calView: string;
     onMonthChange: (m: { year: number; month: number }) => void; onViewChange: (v: string) => void;
     onTaskClick: (t: Task) => void; onDayClick: (date: string, el: HTMLElement) => void;
-    filterUser: string | null; searchQuery: string;
+    filterUser: string | null; searchQuery: string; users: User[];
 }
 
 const MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
@@ -47,29 +47,29 @@ function getWeekDays(_year: number, _month: number) {
 function dateStr(d: Date) { return d.toISOString().split('T')[0]; }
 function isToday(d: Date) { const t = new Date(); return d.getDate() === t.getDate() && d.getMonth() === t.getMonth() && d.getFullYear() === t.getFullYear(); }
 
-function TaskChip({ task, onClick }: { task: Task; onClick: () => void }) {
+function TaskChip({ task, onClick, users }: { task: Task; onClick: () => void; users: User[] }) {
     const p = PRIORITY_COLORS[task.priority];
     return (
         <div className="task-chip" style={{ background: p.bg, borderLeftColor: p.color }} onClick={e => { e.stopPropagation(); onClick(); }}>
             <span className="task-chip-dot" style={{ background: p.color }} />
             <span className="task-chip-title">{task.title}</span>
-            <Avatar userId={task.assignee} size={14} />
+            <Avatar userId={task.assignee} size={14} users={users} />
         </div>
     );
 }
 
-function MorePopover({ tasks, onTaskClick, onClose }: { tasks: Task[]; onTaskClick: (t: Task) => void; onClose: () => void }) {
+function MorePopover({ tasks, onTaskClick, onClose, users }: { tasks: Task[]; onTaskClick: (t: Task) => void; onClose: () => void; users: User[] }) {
     return (
         <div className="more-popover" onClick={e => e.stopPropagation()}>
             <div className="more-popover-title">{tasks.length} tasks</div>
-            {tasks.map(t => <TaskChip key={t.id} task={t} onClick={() => { onTaskClick(t); onClose(); }} />)}
+            {tasks.map(t => <TaskChip key={t.id} task={t} onClick={() => { onTaskClick(t); onClose(); }} users={users} />)}
         </div>
     );
 }
 
-export function QuickAddPanel({ date, onAdd, onOpenFull, onClose }: { date: string; onAdd: (t: Partial<Task>) => void; onOpenFull: () => void; onClose: () => void }) {
+export function QuickAddPanel({ date, onAdd, onOpenFull, onClose, users }: { date: string; onAdd: (t: Partial<Task>) => void; onOpenFull: () => void; onClose: () => void; users: User[] }) {
     const [title, setTitle] = useState('');
-    const [assignee, setAssignee] = useState('u1');
+    const [assignee, setAssignee] = useState(users[0]?.id || '');
     const [priority, setPriority] = useState<'medium' | 'low' | 'high' | 'critical'>('medium');
 
     const submit = () => {
@@ -86,7 +86,7 @@ export function QuickAddPanel({ date, onAdd, onOpenFull, onClose }: { date: stri
                 onChange={e => setTitle(e.target.value)} onKeyDown={e => e.key === 'Enter' && submit()} />
             <div className="quick-add-row">
                 <select className="quick-add-select" value={assignee} onChange={e => setAssignee(e.target.value)}>
-                    {USERS.map(u => <option key={u.id} value={u.id}>{u.avatar} {u.name}</option>)}
+                    {users.map(u => <option key={u.id} value={u.id}>{u.avatar} {u.name}</option>)}
                 </select>
                 <select className="quick-add-select" value={priority} onChange={e => setPriority(e.target.value as any)}>
                     {['critical', 'high', 'medium', 'low'].map(p => <option key={p} value={p}>{p}</option>)}
@@ -100,7 +100,7 @@ export function QuickAddPanel({ date, onAdd, onOpenFull, onClose }: { date: stri
     );
 }
 
-export function CalendarView({ tasks, currentUser, calMonth, calView, onMonthChange, onViewChange, onTaskClick, onDayClick, filterUser, searchQuery }: CalendarProps) {
+export function CalendarView({ tasks, currentUser, calMonth, calView, onMonthChange, onViewChange, onTaskClick, onDayClick, filterUser, searchQuery, users }: CalendarProps) {
     const [morePopover, setMorePopover] = useState<{ date: string; tasks: Task[] } | null>(null);
     const filtered = filterTasks(tasks, currentUser, filterUser, searchQuery);
 
@@ -147,14 +147,14 @@ export function CalendarView({ tasks, currentUser, calMonth, calView, onMonthCha
                                     {cell.date.getDate()}
                                 </div>
                                 <div className="day-tasks">
-                                    {show.map(t => <TaskChip key={t.id} task={t} onClick={() => onTaskClick(t)} />)}
+                                    {show.map(t => <TaskChip key={t.id} task={t} onClick={() => onTaskClick(t)} users={users} />)}
                                     {extra > 0 && (
                                         <span className="more-tasks-link" onClick={e => { e.stopPropagation(); setMorePopover({ date: ds, tasks: dayTasks }); }}>
                                             +{extra} more
                                         </span>
                                     )}
                                 </div>
-                                {morePopover?.date === ds && <MorePopover tasks={morePopover.tasks} onTaskClick={onTaskClick} onClose={() => setMorePopover(null)} />}
+                                {morePopover?.date === ds && <MorePopover tasks={morePopover.tasks} onTaskClick={onTaskClick} onClose={() => setMorePopover(null)} users={users} />}
                             </div>
                         );
                     })}

src/Dashboard.tsx

@@ -1,14 +1,14 @@
 import type { Task, User } from './data';
-import { USERS, STATUS_COLORS, PRIORITY_COLORS } from './data';
+import { STATUS_COLORS, PRIORITY_COLORS } from './data';
 import { Avatar } from './Shared';
 
-export function DashboardPage({ tasks, currentUser }: { tasks: Task[]; currentUser: User }) {
+export function DashboardPage({ tasks, currentUser, users }: { tasks: Task[]; currentUser: User; users: User[] }) {
     const total = tasks.length;
     const completed = tasks.filter(t => t.status === 'done').length;
     const overdue = tasks.filter(t => new Date(t.dueDate + 'T00:00:00') < new Date() && t.status !== 'done').length;
     const critical = tasks.filter(t => t.priority === 'critical' && t.status !== 'done').length;
 
-    const isLeader = currentUser.role === 'cto' || currentUser.role === 'manager';
+    const isLeader = ['ceo', 'cto', 'manager', 'tech_lead', 'scrum_master', 'product_owner'].includes(currentUser.role);
     const myTasks = tasks.filter(t => t.assignee === currentUser.id);
     const myDone = myTasks.filter(t => t.status === 'done').length;
 
@@ -32,13 +32,13 @@ export function DashboardPage({ tasks, currentUser }: { tasks: Task[]; currentUs
                 <>
                     <div className="workload-card">
                         <div className="workload-card-title">Team Workload</div>
-                        {USERS.filter(u => u.id !== currentUser.id || true).map(u => {
+                        {users.map(u => {
                             const ut = tasks.filter(t => t.assignee === u.id);
                             const done = ut.filter(t => t.status === 'done').length;
                             const pct = ut.length ? Math.round((done / ut.length) * 100) : 0;
                             return (
                                 <div key={u.id} className="workload-row">
-                                    <Avatar userId={u.id} size={28} />
+                                    <Avatar userId={u.id} size={28} users={users} />
                                     <span className="workload-name">{u.name}</span>
                                     <span className="workload-dept">{u.dept}</span>
                                     <div className="workload-bar">

src/Kanban.tsx

@@ -1,17 +1,27 @@
+import { useState } from 'react';
 import type { Task, User, Status } from './data';
 import { PRIORITY_COLORS, STATUS_COLORS, STATUS_LABELS } from './data';
 import { Avatar, PriorityBadge, StatusBadge, ProgressBar } from './Shared';
 
-function TaskCard({ task, onClick }: { task: Task; onClick: () => void }) {
+function TaskCard({ task, onClick, users }: { task: Task; onClick: () => void; users: User[] }) {
     const p = PRIORITY_COLORS[task.priority];
     const due = new Date(task.dueDate + 'T00:00:00');
     const overdue = due < new Date() && task.status !== 'done';
     const commCount = task.comments.length;
     return (
-        <div className="task-card" style={{ borderLeftColor: p.color }} onClick={onClick}>
+        <div className="task-card" style={{ borderLeftColor: p.color }}
+            draggable
+            onDragStart={e => {
+                e.dataTransfer.setData('text/plain', task.id);
+                e.dataTransfer.effectAllowed = 'move';
+                (e.currentTarget as HTMLElement).classList.add('dragging');
+            }}
+            onDragEnd={e => (e.currentTarget as HTMLElement).classList.remove('dragging')}
+            onClick={onClick}
+        >
             <div className="task-card-row">
                 <span className="task-card-title">{task.title}</span>
-                <Avatar userId={task.assignee} size={24} />
+                <Avatar userId={task.assignee} size={24} users={users} />
             </div>
             <div className="task-card-badges">
                 <PriorityBadge level={task.priority} />
@@ -27,12 +37,29 @@ function TaskCard({ task, onClick }: { task: Task; onClick: () => void }) {
     );
 }
 
-function KanbanColumn({ status, statusLabel, tasks, color, onTaskClick, onAddTask }: {
+function KanbanColumn({ status, statusLabel, tasks, color, onTaskClick, onAddTask, onMoveTask, users }: {
     status: Status; statusLabel: string; tasks: Task[]; color: string;
     onTaskClick: (t: Task) => void; onAddTask: (s: Status) => void;
+    onMoveTask: (taskId: string, newStatus: Status) => void; users: User[];
 }) {
+    const [dragOver, setDragOver] = useState(false);
+
     return (
-        <div className="kanban-column">
+        <div
+            className={`kanban-column ${dragOver ? 'kanban-column-dragover' : ''}`}
+            onDragOver={e => { e.preventDefault(); e.dataTransfer.dropEffect = 'move'; setDragOver(true); }}
+            onDragEnter={e => { e.preventDefault(); setDragOver(true); }}
+            onDragLeave={e => {
+                // Only set false if leaving the column (not entering a child)
+                if (!e.currentTarget.contains(e.relatedTarget as Node)) setDragOver(false);
+            }}
+            onDrop={e => {
+                e.preventDefault();
+                setDragOver(false);
+                const taskId = e.dataTransfer.getData('text/plain');
+                if (taskId) onMoveTask(taskId, status);
+            }}
+        >
             <div className="kanban-col-header">
                 <div className="kanban-col-dot" style={{ background: color }} />
                 <span className="kanban-col-label">{statusLabel}</span>
@@ -41,9 +68,11 @@ function KanbanColumn({ status, statusLabel, tasks, color, onTaskClick, onAddTas
             </div>
             <div className="kanban-col-body">
                 {tasks.length === 0 ? (
-                    <div className="kanban-empty">No tasks here · Click + to add one</div>
+                    <div className="kanban-empty">
+                        {dragOver ? '⬇ Drop here' : 'No tasks here · Click + to add one'}
+                    </div>
                 ) : (
-                    tasks.map(t => <TaskCard key={t.id} task={t} onClick={() => onTaskClick(t)} />)
+                    tasks.map(t => <TaskCard key={t.id} task={t} onClick={() => onTaskClick(t)} users={users} />)
                 )}
             </div>
         </div>
@@ -52,10 +81,11 @@ function KanbanColumn({ status, statusLabel, tasks, color, onTaskClick, onAddTas
 
 interface KanbanProps {
     tasks: Task[]; currentUser: User; onTaskClick: (t: Task) => void;
-    onAddTask: (s: Status) => void; filterUser: string | null; searchQuery: string;
+    onAddTask: (s: Status) => void; onMoveTask: (taskId: string, newStatus: Status) => void;
+    filterUser: string | null; searchQuery: string; users: User[];
 }
 
-export function KanbanBoard({ tasks, currentUser, onTaskClick, onAddTask, filterUser, searchQuery }: KanbanProps) {
+export function KanbanBoard({ tasks, currentUser, onTaskClick, onAddTask, onMoveTask, filterUser, searchQuery, users }: KanbanProps) {
     let filtered = tasks;
     if (currentUser.role === 'employee') filtered = filtered.filter(t => t.assignee === currentUser.id);
     if (filterUser) filtered = filtered.filter(t => t.assignee === filterUser);
@@ -66,7 +96,8 @@ export function KanbanBoard({ tasks, currentUser, onTaskClick, onAddTask, filter
         <div className="kanban-board">
             {statuses.map(s => (
                 <KanbanColumn key={s} status={s} statusLabel={STATUS_LABELS[s]} color={STATUS_COLORS[s]}
-                    tasks={filtered.filter(t => t.status === s)} onTaskClick={onTaskClick} onAddTask={onAddTask} />
+                    tasks={filtered.filter(t => t.status === s)} onTaskClick={onTaskClick}
+                    onAddTask={onAddTask} onMoveTask={onMoveTask} users={users} />
             ))}
         </div>
     );

src/ListView.tsx

@@ -7,12 +7,13 @@ interface ListProps {
     tasks: Task[]; currentUser: User; onTaskClick: (t: Task) => void;
     filterUser: string | null; searchQuery: string;
     onToggleDone: (taskId: string) => void;
+    users: User[];
 }
 
 type SortKey = 'dueDate' | 'priority' | 'status' | 'assignee';
 const PRIO_ORDER = { critical: 0, high: 1, medium: 2, low: 3 };
 
-export function ListView({ tasks, currentUser, onTaskClick, filterUser, searchQuery, onToggleDone }: ListProps) {
+export function ListView({ tasks, currentUser, onTaskClick, filterUser, searchQuery, onToggleDone, users }: ListProps) {
     const [sortBy, setSortBy] = useState<SortKey>('dueDate');
     const [sortDir, setSortDir] = useState<'asc' | 'desc'>('asc');
     const [menuOpen, setMenuOpen] = useState<string | null>(null);
@@ -53,14 +54,14 @@ export function ListView({ tasks, currentUser, onTaskClick, filterUser, searchQu
                 </thead>
                 <tbody>
                     {sorted.map(t => {
-                        const u = getUserById(t.assignee);
+                        const u = getUserById(users, t.assignee);
                         const due = new Date(t.dueDate + 'T00:00:00');
                         const overdue = due < new Date() && t.status !== 'done';
                         return (
                             <tr key={t.id}>
                                 <td><input type="checkbox" checked={t.status === 'done'} onChange={() => onToggleDone(t.id)} /></td>
                                 <td onClick={() => onTaskClick(t)} style={{ cursor: 'pointer' }}>{t.title}</td>
-                                <td><div style={{ display: 'flex', alignItems: 'center', gap: 6 }}><Avatar userId={t.assignee} size={20} />{u?.name}</div></td>
+                                <td><div style={{ display: 'flex', alignItems: 'center', gap: 6 }}><Avatar userId={t.assignee} size={20} users={users} />{u?.name}</div></td>
                                 <td><PriorityBadge level={t.priority} /></td>
                                 <td><StatusBadge status={t.status} /></td>
                                 <td style={{ color: overdue ? '#ef4444' : undefined }}>{due.toLocaleDateString('en-US', { month: 'short', day: 'numeric' })}</td>

src/Login.tsx

@@ -1,43 +1,113 @@
 import { useState } from 'react';
-import { USERS } from './data';
 import type { User } from './data';
+import { apiLogin, apiRegister } from './api';
 
 export function LoginPage({ onLogin }: { onLogin: (u: User) => void }) {
+    const [mode, setMode] = useState<'login' | 'register'>('login');
+    const [name, setName] = useState('');
     const [email, setEmail] = useState('');
     const [pass, setPass] = useState('');
+    const [role, setRole] = useState('employee');
+    const [dept, setDept] = useState('');
     const [showPass, setShowPass] = useState(false);
     const [error, setError] = useState('');
+    const [loading, setLoading] = useState(false);
 
-    const handleSubmit = (e: React.FormEvent) => {
+    const handleLogin = async (e: React.FormEvent) => {
         e.preventDefault();
-        const user = USERS.find(u => u.email === email && u.pass === pass);
-        if (user) { onLogin(user); }
-        else { setError('Invalid email or password'); }
+        setLoading(true);
+        setError('');
+        try {
+            const user = await apiLogin(email, pass);
+            onLogin(user);
+        } catch (err: any) {
+            setError(err.message || 'Invalid email or password');
+        } finally {
+            setLoading(false);
+        }
+    };
+
+    const handleRegister = async (e: React.FormEvent) => {
+        e.preventDefault();
+        if (!name.trim() || !email.trim() || !pass.trim()) {
+            setError('All fields are required');
+            return;
+        }
+        setLoading(true);
+        setError('');
+        try {
+            const user = await apiRegister({ name, email, password: pass, role, dept });
+            onLogin(user);
+        } catch (err: any) {
+            setError(err.message || 'Registration failed');
+        } finally {
+            setLoading(false);
+        }
     };
 
     return (
         <div className="login-bg">
-            <form className="login-card" onSubmit={handleSubmit}>
+            <form className="login-card" onSubmit={mode === 'login' ? handleLogin : handleRegister}>
                 <div className="login-logo">
                     <div className="login-logo-icon">⚡</div>
                     <span className="login-title">Scrum-manager</span>
                 </div>
                 <p className="login-tagline">Your team's command center</p>
                 <div className="login-divider" />
-                <label className="login-label">Email</label>
+
+                {mode === 'register' && (
+                    <>
+                        <label className="login-label" htmlFor="register-name">Name</label>
+                        <div className="login-input-wrap">
+                            <input id="register-name" className={`login-input ${error ? 'error' : ''}`} type="text" placeholder="Your full name"
+                                value={name} onChange={e => { setName(e.target.value); setError(''); }} />
+                        </div>
+                    </>
+                )}
+
+                <label className="login-label" htmlFor="login-email">Email</label>
                 <div className="login-input-wrap">
-                    <input className={`login-input ${error ? 'error' : ''}`} type="email" placeholder="you@company.io"
+                    <input id="login-email" className={`login-input ${error ? 'error' : ''}`} type="email" placeholder="you@company.io"
                         value={email} onChange={e => { setEmail(e.target.value); setError(''); }} />
                 </div>
-                <label className="login-label">Password</label>
+                <label className="login-label" htmlFor="login-password">Password</label>
                 <div className="login-input-wrap">
-                    <input className={`login-input ${error ? 'error' : ''}`} type={showPass ? 'text' : 'password'} placeholder="••••••••"
+                    <input id="login-password" className={`login-input ${error ? 'error' : ''}`} type={showPass ? 'text' : 'password'} placeholder="••••••••"
                         value={pass} onChange={e => { setPass(e.target.value); setError(''); }} />
                     <button type="button" className="login-eye" onClick={() => setShowPass(!showPass)}>{showPass ? '🙈' : '👁'}</button>
                 </div>
-                <button type="submit" className="login-btn">Sign In</button>
+
+                {mode === 'register' && (
+                    <>
+                        <label className="login-label" htmlFor="register-role">Role</label>
+                        <div className="login-input-wrap">
+                            <select id="register-role" className="login-input" value={role} onChange={e => setRole(e.target.value)}>
+                                <option value="employee">Employee</option>
+                                <option value="tech_lead">Tech Lead</option>
+                                <option value="scrum_master">Scrum Master</option>
+                                <option value="product_owner">Product Owner</option>
+                                <option value="designer">Designer</option>
+                                <option value="qa">QA Engineer</option>
+                                <option value="manager">Manager</option>
+                                <option value="cto">CTO</option>
+                                <option value="ceo">CEO</option>
+                            </select>
+                        </div>
+                        <label className="login-label" htmlFor="register-dept">Department</label>
+                        <div className="login-input-wrap">
+                            <input id="register-dept" className="login-input" type="text" placeholder="e.g. Backend, Frontend, DevOps"
+                                value={dept} onChange={e => setDept(e.target.value)} />
+                        </div>
+                    </>
+                )}
+
+                <button type="submit" className="login-btn" disabled={loading}>
+                    {loading ? '...' : mode === 'login' ? 'Sign In' : 'Create Account'}
+                </button>
                 {error && <p className="login-error">{error}</p>}
-                <div className="login-hint">💡 Try: subodh@corp.io / cto123</div>
+                <div className="login-hint" style={{ cursor: 'pointer' }} onClick={() => { setMode(mode === 'login' ? 'register' : 'login'); setError(''); }}>
+                    {mode === 'login' ? '📝 No account? Register here' : '🔑 Already have an account? Sign in'}
+                </div>
             </form>
         </div>
     );

src/NavBars.tsx

@@ -1,5 +1,4 @@
-import { USERS } from './data';
-
+import type { User } from './data';
 
 interface TopNavbarProps {
     title: string;
@@ -8,11 +7,14 @@ interface TopNavbarProps {
     searchQuery: string;
     onSearch: (q: string) => void;
     onNewTask: () => void;
+    onOpenSidebar: () => void;
+    users: User[];
 }
 
-export function TopNavbar({ title, filterUser, onFilterChange, searchQuery, onSearch, onNewTask }: TopNavbarProps) {
+export function TopNavbar({ title, filterUser, onFilterChange, searchQuery, onSearch, onNewTask, onOpenSidebar, users }: TopNavbarProps) {
     return (
         <div className="top-navbar">
+            <button className="hamburger-btn" onClick={onOpenSidebar}>☰</button>
             <span className="navbar-title">{title}</span>
             <div className="navbar-search">
                 <span className="navbar-search-icon">🔍</span>
@@ -21,7 +23,7 @@ export function TopNavbar({ title, filterUser, onFilterChange, searchQuery, onSe
             <div className="navbar-right">
                 <div className="filter-chips">
                     <span className={`filter-chip filter-chip-all ${!filterUser ? 'active' : ''}`} onClick={() => onFilterChange(null)}>All</span>
-                    {USERS.map(u => (
+                    {users.map(u => (
                         <div key={u.id} className={`filter-chip ${filterUser === u.id ? 'active' : ''}`}
                             style={{ background: u.color, borderColor: filterUser === u.id ? u.color : 'transparent' }}
                             title={u.name} onClick={() => onFilterChange(u.id === filterUser ? null : u.id)}>

src/Pages.tsx

@@ -1,22 +1,21 @@
 import React, { useState } from 'react';
 import type { Task, User } from './data';
-import { USERS, PRIORITY_COLORS } from './data';
+import { PRIORITY_COLORS } from './data';
 import { Avatar, StatusBadge } from './Shared';
 
-export function TeamTasksPage({ tasks }: { tasks: Task[]; currentUser: User }) {
+export function TeamTasksPage({ tasks, users }: { tasks: Task[]; currentUser: User; users: User[] }) {
     const [expanded, setExpanded] = useState<Record<string, boolean>>({});
 
-    const members = USERS;
     return (
         <div className="team-tasks">
             <h2 style={{ fontSize: 18, fontWeight: 700, marginBottom: 16 }}>Team Tasks</h2>
-            {members.map(m => {
+            {users.map(m => {
                 const mTasks = tasks.filter(t => t.assignee === m.id);
                 const isOpen = expanded[m.id] !== false;
                 return (
                     <div key={m.id} className="team-group">
                         <div className="team-group-header" onClick={() => setExpanded(e => ({ ...e, [m.id]: !isOpen }))}>
-                            <Avatar userId={m.id} size={28} />
+                            <Avatar userId={m.id} size={28} users={users} />
                             <span className="team-group-name">{m.name}</span>
                             <span className="team-group-count">({mTasks.length} tasks)</span>
                             <span style={{ color: '#64748b' }}>{isOpen ? '▼' : '▶'}</span>
@@ -43,7 +42,7 @@ export function TeamTasksPage({ tasks }: { tasks: Task[]; currentUser: User }) {
     );
 }
 
-export function MembersPage({ tasks }: { tasks: Task[] }) {
+export function MembersPage({ tasks, users }: { tasks: Task[]; users: User[] }) {
     const [expanded, setExpanded] = useState<string | null>(null);
     const [showInvite, setShowInvite] = useState(false);
 
@@ -56,15 +55,15 @@ export function MembersPage({ tasks }: { tasks: Task[] }) {
             <table className="members-table">
                 <thead><tr><th>Avatar</th><th>Full Name</th><th>Role</th><th>Dept</th><th>Assigned</th><th>Done</th><th>Active</th></tr></thead>
                 <tbody>
-                    {USERS.map(u => {
+                    {users.map(u => {
                         const ut = tasks.filter(t => t.assignee === u.id);
                         const done = ut.filter(t => t.status === 'done').length;
                         const active = ut.filter(t => t.status !== 'done').length;
-                        const roleColors: Record<string, string> = { cto: '#818cf8', manager: '#fb923c', employee: '#22c55e' };
+                        const roleColors: Record<string, string> = { ceo: '#eab308', cto: '#818cf8', manager: '#fb923c', tech_lead: '#06b6d4', scrum_master: '#a855f7', product_owner: '#ec4899', designer: '#f43f5e', qa: '#14b8a6', employee: '#22c55e' };
                         return (
                             <React.Fragment key={u.id}>
                                 <tr onClick={() => setExpanded(expanded === u.id ? null : u.id)}>
-                                    <td><Avatar userId={u.id} size={28} /></td>
+                                    <td><Avatar userId={u.id} size={28} users={users} /></td>
                                     <td>{u.name}</td>
                                     <td><span style={{ background: `${roleColors[u.role]}22`, color: roleColors[u.role], padding: '2px 8px', borderRadius: 10, fontSize: 10, fontWeight: 600 }}>{u.role.toUpperCase()}</span></td>
                                     <td>{u.dept}</td>
@@ -100,7 +99,7 @@ export function MembersPage({ tasks }: { tasks: Task[] }) {
                             <div className="modal-field"><label>Email</label><input className="modal-input" placeholder="member@company.io" /></div>
                             <div className="modal-field">
                                 <label>Role</label>
-                                <select className="modal-input"><option value="employee">Employee</option><option value="manager">Manager</option></select>
+                                <select className="modal-input"><option value="employee">Employee</option><option value="tech_lead">Tech Lead</option><option value="scrum_master">Scrum Master</option><option value="product_owner">Product Owner</option><option value="designer">Designer</option><option value="qa">QA Engineer</option><option value="manager">Manager</option><option value="cto">CTO</option><option value="ceo">CEO</option></select>
                             </div>
                         </div>
                         <div className="modal-footer"><button className="btn-ghost" onClick={() => setShowInvite(false)}>Cancel</button><button className="btn-primary" onClick={() => setShowInvite(false)}>Send Invite</button></div>
@@ -110,4 +109,3 @@ export function MembersPage({ tasks }: { tasks: Task[] }) {
         </div>
     );
 }
-

src/Reports.tsx

@@ -1,5 +1,5 @@
-import type { Task } from './data';
-import { USERS, STATUS_COLORS, PRIORITY_COLORS } from './data';
+import type { Task, User } from './data';
+import { STATUS_COLORS, PRIORITY_COLORS } from './data';
 import { BarChart, Bar, PieChart, Pie, Cell, LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer, Legend } from 'recharts';
 
 const tooltipStyle = {
@@ -8,14 +8,14 @@ const tooltipStyle = {
     labelStyle: { color: '#94a3b8' },
 };
 
-export function ReportsPage({ tasks }: { tasks: Task[] }) {
+export function ReportsPage({ tasks, users }: { tasks: Task[]; users: User[] }) {
     const total = tasks.length;
     const completed = tasks.filter(t => t.status === 'done').length;
     const overdue = tasks.filter(t => new Date(t.dueDate + 'T00:00:00') < new Date() && t.status !== 'done').length;
     const critical = tasks.filter(t => t.priority === 'critical' && t.status !== 'done').length;
 
     // Tasks per member (stacked by status)
-    const memberData = USERS.map(u => {
+    const memberData = users.map(u => {
         const ut = tasks.filter(t => t.assignee === u.id);
         return {
             name: u.name.split(' ')[0],
@@ -36,7 +36,7 @@ export function ReportsPage({ tasks }: { tasks: Task[] }) {
     const completionData = days.map((d, i) => ({ name: d, completed: [1, 0, 2, 1, 3, 0, 1][i] }));
 
     // Overdue by member
-    const overdueData = USERS.map(u => ({
+    const overdueData = users.map(u => ({
         name: u.name.split(' ')[0],
         overdue: tasks.filter(t => t.assignee === u.id && new Date(t.dueDate + 'T00:00:00') < new Date() && t.status !== 'done').length,
     })).filter(d => d.overdue > 0);

src/Shared.tsx

@@ -1,8 +1,9 @@
 import { PRIORITY_COLORS, STATUS_COLORS, STATUS_LABELS, getUserById } from './data';
-import type { Priority, Status, Subtask } from './data';
+import type { Priority, Status, Subtask, User } from './data';
 
-export function Avatar({ userId, size = 28 }: { userId: string; size?: number }) {
-    const u = getUserById(userId);
+export function Avatar({ userId, size = 28, users }: { userId: string; size?: number; users: User[] }) {
+    if (!users || !users.length) return null;
+    const u = getUserById(users, userId);
     if (!u) return null;
     return (
         <div className="avatar" style={{ width: size, height: size, fontSize: size * 0.36, background: u.color }}>
@@ -50,7 +51,7 @@ export function ProgressBar({ subtasks }: { subtasks: Subtask[] }) {
 }
 
 export function RoleBadge({ role }: { role: string }) {
-    const colors: Record<string, string> = { cto: '#818cf8', manager: '#fb923c', employee: '#22c55e' };
+    const colors: Record<string, string> = { ceo: '#eab308', cto: '#818cf8', manager: '#fb923c', tech_lead: '#06b6d4', scrum_master: '#a855f7', product_owner: '#ec4899', designer: '#f43f5e', qa: '#14b8a6', employee: '#22c55e' };
     const c = colors[role] || '#64748b';
     return <span className="role-badge" style={{ background: `${c}22`, color: c }}>{role.toUpperCase()}</span>;
 }

src/Sidebar.tsx

@@ -2,14 +2,17 @@ import type { User } from './data';
 import { Avatar } from './Shared';
 import { RoleBadge } from './Shared';
 
+const ALL_ROLES = ['ceo', 'cto', 'manager', 'tech_lead', 'scrum_master', 'product_owner', 'employee', 'designer', 'qa'];
+const LEADER_ROLES = ['ceo', 'cto', 'manager', 'tech_lead', 'scrum_master', 'product_owner'];
+
 const NAV_ITEMS = [
-    { id: 'dashboard', icon: '⊞', label: 'Dashboard', roles: ['cto', 'manager', 'employee'] },
-    { id: 'calendar', icon: '📅', label: 'Calendar', roles: ['cto', 'manager', 'employee'] },
-    { id: 'kanban', icon: '▦', label: 'Kanban Board', roles: ['cto', 'manager', 'employee'] },
-    { id: 'mytasks', icon: '✓', label: 'My Tasks', roles: ['employee'] },
-    { id: 'teamtasks', icon: '👥', label: 'Team Tasks', roles: ['cto', 'manager'] },
-    { id: 'reports', icon: '📊', label: 'Reports', roles: ['cto', 'manager'] },
-    { id: 'members', icon: '👤', label: 'Members', roles: ['cto'] },
+    { id: 'dashboard', icon: '⊞', label: 'Dashboard', roles: ALL_ROLES },
+    { id: 'calendar', icon: '📅', label: 'Calendar', roles: ALL_ROLES },
+    { id: 'kanban', icon: '▦', label: 'Kanban Board', roles: ALL_ROLES },
+    { id: 'mytasks', icon: '✓', label: 'My Tasks', roles: ['employee', 'designer', 'qa'] },
+    { id: 'teamtasks', icon: '👥', label: 'Team Tasks', roles: LEADER_ROLES },
+    { id: 'reports', icon: '📊', label: 'Reports', roles: LEADER_ROLES },
+    { id: 'members', icon: '👤', label: 'Members', roles: ['ceo', 'cto'] },
 ];
 
 interface SidebarProps {
@@ -17,36 +20,42 @@ interface SidebarProps {
     activePage: string;
     onNavigate: (page: string) => void;
     onSignOut: () => void;
+    isOpen: boolean;
+    onClose: () => void;
+    users: User[];
 }
 
-export function Sidebar({ currentUser, activePage, onNavigate, onSignOut }: SidebarProps) {
+export function Sidebar({ currentUser, activePage, onNavigate, onSignOut, isOpen, onClose, users }: SidebarProps) {
     const filteredNav = NAV_ITEMS.filter(n => n.roles.includes(currentUser.role));
     return (
-        <div className="sidebar">
-            <div className="sidebar-logo">
-                <div className="sidebar-logo-icon">⚡</div>
-                <span className="sidebar-logo-text">Scrum-manager</span>
-            </div>
-            <div className="sidebar-divider" />
-            <div className="sidebar-section-label">Navigate</div>
-            <nav className="sidebar-nav">
-                {filteredNav.map(n => (
-                    <div key={n.id} className={`sidebar-item ${activePage === n.id ? 'active' : ''}`} onClick={() => onNavigate(n.id)}>
-                        <span className="sidebar-item-icon">{n.icon}</span>
-                        {n.label}
+        <>
+            {isOpen && <div className="sidebar-backdrop visible" onClick={onClose} />}
+            <div className={`sidebar ${isOpen ? 'sidebar-open' : ''}`}>
+                <div className="sidebar-logo">
+                    <div className="sidebar-logo-icon">⚡</div>
+                    <span className="sidebar-logo-text">Scrum-manager</span>
+                </div>
+                <div className="sidebar-divider" />
+                <div className="sidebar-section-label">Navigate</div>
+                <nav className="sidebar-nav">
+                    {filteredNav.map(n => (
+                        <div key={n.id} className={`sidebar-item ${activePage === n.id ? 'active' : ''}`} onClick={() => onNavigate(n.id)}>
+                            <span className="sidebar-item-icon">{n.icon}</span>
+                            {n.label}
+                        </div>
+                    ))}
+                </nav>
+                <div className="sidebar-profile">
+                    <Avatar userId={currentUser.id} size={36} users={users} />
+                    <div className="sidebar-profile-info">
+                        <div className="sidebar-profile-name">{currentUser.name}</div>
+                        <RoleBadge role={currentUser.role} />
                     </div>
-                ))}
-            </nav>
-            <div className="sidebar-profile">
-                <Avatar userId={currentUser.id} size={36} />
-                <div className="sidebar-profile-info">
-                    <div className="sidebar-profile-name">{currentUser.name}</div>
-                    <RoleBadge role={currentUser.role} />
+                </div>
+                <div style={{ padding: '0 16px 12px' }}>
+                    <button className="sidebar-signout" onClick={onSignOut}>Sign Out</button>
                 </div>
             </div>
-            <div style={{ padding: '0 16px 12px' }}>
-                <button className="sidebar-signout" onClick={onSignOut}>Sign Out</button>
-            </div>
-        </div>
+        </>
     );
 }

src/TaskDrawer.tsx

@@ -1,16 +1,22 @@
 import { useState } from 'react';
 import type { Task, User, Status, Priority } from './data';
-import { USERS, STATUS_LABELS, getUserById } from './data';
+import { STATUS_LABELS, getUserById } from './data';
 import { Avatar, Tag, ProgressBar } from './Shared';
 
 interface DrawerProps {
     task: Task; currentUser: User; onClose: () => void;
     onUpdate: (updated: Task) => void;
+    onAddDependency: (taskId: string, dep: { dependsOnUserId: string; description: string }) => void;
+    onToggleDependency: (taskId: string, depId: string, resolved: boolean) => void;
+    onRemoveDependency: (taskId: string, depId: string) => void;
+    users: User[];
 }
 
-export function TaskDrawer({ task, currentUser, onClose, onUpdate }: DrawerProps) {
+export function TaskDrawer({ task, currentUser, onClose, onUpdate, onAddDependency, onToggleDependency, onRemoveDependency, users }: DrawerProps) {
     const [commentText, setCommentText] = useState('');
     const [subtaskText, setSubtaskText] = useState('');
+    const [depUser, setDepUser] = useState('');
+    const [depDesc, setDepDesc] = useState('');
 
     const updateField = (field: string, value: any) => {
         const now = new Date().toISOString();
@@ -48,8 +54,16 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate }: DrawerProps
         setCommentText('');
     };
 
-    const reporter = getUserById(task.reporter);
+    const handleAddDep = () => {
+        if (!depDesc.trim()) return;
+        onAddDependency(task.id, { dependsOnUserId: depUser, description: depDesc });
+        setDepDesc('');
+        setDepUser('');
+    };
+
+    const reporter = getUserById(users, task.reporter);
     const doneCount = task.subtasks.filter(s => s.done).length;
+    const unresolvedDeps = (task.dependencies || []).filter(d => !d.resolved).length;
 
     return (
         <>
@@ -67,25 +81,25 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate }: DrawerProps
                         <div>
                             <div className="drawer-meta-label">Assignee</div>
                             <div className="drawer-meta-val">
-                                <Avatar userId={task.assignee} size={20} />
-                                <select className="drawer-select" value={task.assignee} onChange={e => updateField('assignee', e.target.value)}>
-                                    {USERS.map(u => <option key={u.id} value={u.id}>{u.name}</option>)}
+                                <Avatar userId={task.assignee} size={20} users={users} />
+                                <select className="drawer-select" aria-label="Assignee" value={task.assignee} onChange={e => updateField('assignee', e.target.value)}>
+                                    {users.map(u => <option key={u.id} value={u.id}>{u.name}</option>)}
                                 </select>
                             </div>
                         </div>
                         <div>
                             <div className="drawer-meta-label">Reporter</div>
-                            <div className="drawer-meta-val"><Avatar userId={task.reporter} size={20} /> {reporter?.name}</div>
+                            <div className="drawer-meta-val"><Avatar userId={task.reporter} size={20} users={users} /> {reporter?.name}</div>
                         </div>
                         <div>
                             <div className="drawer-meta-label">Status</div>
-                            <select className="drawer-select" value={task.status} onChange={e => updateField('status', e.target.value)}>
+                            <select className="drawer-select" aria-label="Status" value={task.status} onChange={e => updateField('status', e.target.value)}>
                                 {Object.entries(STATUS_LABELS).map(([k, v]) => <option key={k} value={k}>{v}</option>)}
                             </select>
                         </div>
                         <div>
                             <div className="drawer-meta-label">Priority</div>
-                            <select className="drawer-select" value={task.priority} onChange={e => updateField('priority', e.target.value)}>
+                            <select className="drawer-select" aria-label="Priority" value={task.priority} onChange={e => updateField('priority', e.target.value)}>
                                 {['critical', 'high', 'medium', 'low'].map(p => <option key={p} value={p}>{p}</option>)}
                             </select>
                         </div>
@@ -99,6 +113,50 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate }: DrawerProps
                         </div>
                     </div>
 
+                    {/* Dependencies Section */}
+                    <div className="drawer-section">
+                        <div className="drawer-section-title">
+                            🔗 Dependencies
+                            {unresolvedDeps > 0 && <span className="dep-unresolved-badge">{unresolvedDeps} blocking</span>}
+                        </div>
+                        {(task.dependencies || []).length === 0 && (
+                            <div className="dep-empty">No dependencies yet</div>
+                        )}
+                        {(task.dependencies || []).map(dep => {
+                            const depUser = getUserById(users, dep.dependsOnUserId);
+                            return (
+                                <div key={dep.id} className={`dep-item ${dep.resolved ? 'dep-resolved' : 'dep-unresolved'}`}>
+                                    <button
+                                        className={`dep-check ${dep.resolved ? 'checked' : ''}`}
+                                        onClick={() => onToggleDependency(task.id, dep.id, !dep.resolved)}
+                                        title={dep.resolved ? 'Mark unresolved' : 'Mark resolved'}
+                                    >
+                                        {dep.resolved ? '✓' : ''}
+                                    </button>
+                                    <div className="dep-info">
+                                        {depUser && (
+                                            <span className="dep-user">
+                                                <Avatar userId={dep.dependsOnUserId} size={18} users={users} />
+                                                <span>{depUser.name}</span>
+                                            </span>
+                                        )}
+                                        <span className={`dep-desc ${dep.resolved ? 'done' : ''}`}>{dep.description}</span>
+                                    </div>
+                                    <button className="dep-remove" onClick={() => onRemoveDependency(task.id, dep.id)} title="Remove">✕</button>
+                                </div>
+                            );
+                        })}
+                        <div className="dep-add-row">
+                            <select className="dep-add-select" value={depUser} onChange={e => setDepUser(e.target.value)}>
+                                <option value="">Anyone</option>
+                                {users.map(u => <option key={u.id} value={u.id}>{u.avatar} {u.name}</option>)}
+                            </select>
+                            <input className="dep-add-input" placeholder="Describe the dependency..." value={depDesc}
+                                onChange={e => setDepDesc(e.target.value)} onKeyDown={e => e.key === 'Enter' && handleAddDep()} />
+                            <button className="dep-add-btn" onClick={handleAddDep}>Add</button>
+                        </div>
+                    </div>
+
                     <div className="drawer-section">
                         <div className="drawer-section-title">Subtasks <span style={{ color: '#64748b', fontWeight: 400, fontSize: 12 }}>{doneCount} of {task.subtasks.length} complete</span></div>
                         {task.subtasks.length > 0 && <ProgressBar subtasks={task.subtasks} />}
@@ -117,10 +175,10 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate }: DrawerProps
                     <div className="drawer-section">
                         <div className="drawer-section-title">Comments</div>
                         {task.comments.map(c => {
-                            const cu = getUserById(c.userId);
+                            const cu = getUserById(users, c.userId);
                             return (
                                 <div key={c.id} className="comment-item">
-                                    <Avatar userId={c.userId} size={26} />
+                                    <Avatar userId={c.userId} size={26} users={users} />
                                     <div className="comment-bubble">
                                         <div className="comment-header">
                                             <span className="comment-name">{cu?.name}</span>
@@ -132,7 +190,7 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate }: DrawerProps
                             );
                         })}
                         <div className="comment-input-row">
-                            <Avatar userId={currentUser.id} size={26} />
+                            <Avatar userId={currentUser.id} size={26} users={users} />
                             <input placeholder="Add a comment..." value={commentText} onChange={e => setCommentText(e.target.value)} onKeyDown={e => e.key === 'Enter' && addComment()} />
                             <button onClick={addComment}>Post</button>
                         </div>
@@ -157,26 +215,51 @@ interface ModalProps {
     onAdd: (task: Task) => void;
     defaultDate?: string;
     defaultStatus?: Status;
+    users: User[];
+    currentUser: User;
 }
 
-export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus }: ModalProps) {
+interface PendingDep {
+    id: string;
+    dependsOnUserId: string;
+    description: string;
+}
+
+export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus, users, currentUser }: ModalProps) {
     const [title, setTitle] = useState('');
     const [desc, setDesc] = useState('');
-    const [assignee, setAssignee] = useState('u1');
+    const [assignee, setAssignee] = useState(currentUser.id);
     const [priority, setPriority] = useState<Priority>('medium');
     const [status, setStatus] = useState<Status>(defaultStatus || 'todo');
     const [dueDate, setDueDate] = useState(defaultDate || new Date().toISOString().split('T')[0]);
     const [tags, setTags] = useState('');
     const [error, setError] = useState(false);
 
+    // Dependencies state
+    const [deps, setDeps] = useState<PendingDep[]>([]);
+    const [depUser, setDepUser] = useState('');
+    const [depDesc, setDepDesc] = useState('');
+
+    const addDep = () => {
+        if (!depDesc.trim()) return;
+        setDeps(prev => [...prev, { id: `pd${Date.now()}`, dependsOnUserId: depUser, description: depDesc }]);
+        setDepDesc('');
+        setDepUser('');
+    };
+
+    const removeDep = (id: string) => {
+        setDeps(prev => prev.filter(d => d.id !== id));
+    };
+
     const submit = () => {
         if (!title.trim()) { setError(true); return; }
         const task: Task = {
             id: `t${Date.now()}`, title, description: desc, status, priority,
-            assignee, reporter: 'u1', dueDate,
+            assignee, reporter: currentUser.id, dueDate,
             tags: tags ? tags.split(',').map(t => t.trim()).filter(Boolean) : [],
             subtasks: [], comments: [],
             activity: [{ id: `a${Date.now()}`, text: `📝 Task created`, timestamp: new Date().toISOString() }],
+            dependencies: deps.map(d => ({ id: d.id, dependsOnUserId: d.dependsOnUserId, description: d.description, resolved: false })),
         };
         onAdd(task);
         onClose();
@@ -197,9 +280,9 @@ export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus }: Mod
                     </div>
                     <div className="modal-grid">
                         <div className="modal-field">
-                            <label>Assignee</label>
+                            <label>Assign To</label>
                             <select className="modal-input" value={assignee} onChange={e => setAssignee(e.target.value)}>
-                                {USERS.map(u => <option key={u.id} value={u.id}>{u.avatar} {u.name}</option>)}
+                                {users.map(u => <option key={u.id} value={u.id}>{u.avatar} {u.name}</option>)}
                             </select>
                         </div>
                         <div className="modal-field">
@@ -223,6 +306,33 @@ export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus }: Mod
                         <label>Tags (comma separated)</label>
                         <input className="modal-input" placeholder="devops, backend, ..." value={tags} onChange={e => setTags(e.target.value)} />
                     </div>
+
+                    {/* Dependencies Section */}
+                    <div className="modal-field">
+                        <label>🔗 Dependencies / Blockers</label>
+                        <div className="modal-deps-list">
+                            {deps.map(d => {
+                                const u = getUserById(users, d.dependsOnUserId);
+                                return (
+                                    <div key={d.id} className="modal-dep-item">
+                                        <span className="modal-dep-icon">⏳</span>
+                                        {u && <span className="modal-dep-user">{u.avatar} {u.name}:</span>}
+                                        <span className="modal-dep-desc">{d.description}</span>
+                                        <button className="modal-dep-remove" onClick={() => removeDep(d.id)}>✕</button>
+                                    </div>
+                                );
+                            })}
+                        </div>
+                        <div className="modal-dep-add">
+                            <select className="modal-dep-select" value={depUser} onChange={e => setDepUser(e.target.value)}>
+                                <option value="">Blocked by (anyone)</option>
+                                {users.map(u => <option key={u.id} value={u.id}>{u.avatar} {u.name}</option>)}
+                            </select>
+                            <input className="modal-dep-input" placeholder="e.g. Need API endpoints from backend team"
+                                value={depDesc} onChange={e => setDepDesc(e.target.value)} onKeyDown={e => e.key === 'Enter' && (e.preventDefault(), addDep())} />
+                            <button className="modal-dep-btn" onClick={addDep} type="button">+ Add</button>
+                        </div>
+                    </div>
                 </div>
                 <div className="modal-footer">
                     <button className="btn-ghost" onClick={onClose}>Cancel</button>

src/__tests__/App.test.tsx

@@ -0,0 +1,54 @@
+
+import { describe, it, expect, vi } from 'vitest';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import App from '../App';
+import * as api from '../api';
+
+// Mock the API module
+vi.mock('../api', () => ({
+    apiFetchTasks: vi.fn(),
+    apiFetchUsers: vi.fn(),
+    apiCreateTask: vi.fn(),
+    apiUpdateTask: vi.fn(),
+    apiAddActivity: vi.fn(),
+    apiLogin: vi.fn(),
+}));
+
+describe('App Component', () => {
+    it('renders login page when no user is logged in', () => {
+        render(<App />);
+        expect(screen.getByRole('button', { name: /sig\s*n\s*in/i })).toBeInTheDocument();
+    });
+
+    it('renders main content after login', async () => {
+        const mockUser = { id: 'u1', name: 'Test User', email: 'test@example.com', role: 'admin', dept: 'Engineering' };
+        const mockTasks = [{ id: 't1', title: 'Task 1', status: 'todo' }];
+        const mockUsers = [mockUser];
+
+        // Mock API responses
+        (api.apiLogin as any).mockResolvedValue(mockUser);
+        (api.apiFetchTasks as any).mockResolvedValue(mockTasks);
+        (api.apiFetchUsers as any).mockResolvedValue(mockUsers);
+
+        render(<App />);
+
+        // Simulate login
+        const emailInput = screen.getByLabelText(/email/i);
+        const passwordInput = screen.getByLabelText(/password/i);
+        const loginButton = screen.getByRole('button', { name: /sig\s*n\s*in/i });
+
+        await userEvent.type(emailInput, 'test@example.com');
+        await userEvent.type(passwordInput, 'password');
+        await userEvent.click(loginButton);
+
+        // Wait for data loading
+        await waitFor(() => {
+            expect(screen.queryByText(/loading/i)).not.toBeInTheDocument();
+        });
+
+        // Check if main content is rendered (e.g., Sidebar, Calendar)
+        expect(screen.getByText('Calendar')).toBeInTheDocument();
+        expect(screen.getByText('Test User')).toBeInTheDocument();
+    });
+});

src/__tests__/Kanban.test.tsx

@@ -0,0 +1,67 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent } from '@testing-library/react';
+import { KanbanBoard } from '../Kanban';
+import type { Task, User } from '../data';
+
+// Mock Shared components
+vi.mock('../Shared', () => ({
+    Avatar: ({ userId }: any) => <div data-testid="avatar">{userId}</div>,
+    PriorityBadge: ({ level }: any) => <div>{level}</div>,
+    StatusBadge: ({ status }: any) => <div>{status}</div>,
+    ProgressBar: () => <div>Progress</div>
+}));
+
+describe('KanbanBoard Component', () => {
+    const mockUser: User = { id: 'u1', name: 'Test User', email: 'test@example.com', role: 'emp', dept: 'dev', avatar: 'TU', color: '#000' };
+    const mockUsers = [mockUser];
+
+    const mockTasks: Task[] = [
+        { id: 't1', title: 'Task 1', description: 'Desc', status: 'todo', priority: 'medium', assignee: 'u1', reporter: 'u1', dueDate: '2023-12-31', tags: [], subtasks: [], comments: [], activity: [], dependencies: [] },
+        { id: 't2', title: 'Task 2', description: 'Desc', status: 'inprogress', priority: 'high', assignee: 'u1', reporter: 'u1', dueDate: '2023-12-31', tags: [], subtasks: [], comments: [], activity: [], dependencies: [] },
+    ];
+
+    const mockOnTaskClick = vi.fn();
+    const mockOnAddTask = vi.fn();
+    const mockOnMoveTask = vi.fn();
+
+    beforeEach(() => {
+        vi.clearAllMocks();
+    });
+
+    it('renders columns and tasks', () => {
+        render(<KanbanBoard tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onAddTask={mockOnAddTask} onMoveTask={mockOnMoveTask} filterUser={null} searchQuery="" users={mockUsers} />);
+
+        expect(screen.getByText('To Do')).toBeInTheDocument();
+        expect(screen.getByText('In Progress')).toBeInTheDocument();
+        expect(screen.getByText('Review')).toBeInTheDocument();
+        expect(screen.getByText('Done')).toBeInTheDocument();
+
+        expect(screen.getByText('Task 1')).toBeInTheDocument();
+        expect(screen.getByText('Task 2')).toBeInTheDocument();
+    });
+
+    it('filters tasks by search query', () => {
+        render(<KanbanBoard tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onAddTask={mockOnAddTask} onMoveTask={mockOnMoveTask} filterUser={null} searchQuery="Task 1" users={mockUsers} />);
+
+        expect(screen.getByText('Task 1')).toBeInTheDocument();
+        expect(screen.queryByText('Task 2')).not.toBeInTheDocument();
+    });
+
+    it('calls onAddTask when + button clicked', () => {
+        render(<KanbanBoard tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onAddTask={mockOnAddTask} onMoveTask={mockOnMoveTask} filterUser={null} searchQuery="" users={mockUsers} />);
+
+        // There are multiple + buttons (one per column)
+        const addButtons = screen.getAllByText('+');
+        fireEvent.click(addButtons[0]); // Click first column (Todo) add button
+
+        expect(mockOnAddTask).toHaveBeenCalledWith('todo');
+    });
+
+    it('calls onTaskClick when task clicked', () => {
+        render(<KanbanBoard tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onAddTask={mockOnAddTask} onMoveTask={mockOnMoveTask} filterUser={null} searchQuery="" users={mockUsers} />);
+
+        fireEvent.click(screen.getByText('Task 1'));
+        expect(mockOnTaskClick).toHaveBeenCalledWith(mockTasks[0]);
+    });
+});

src/__tests__/ListView.test.tsx

@@ -0,0 +1,57 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent } from '@testing-library/react';
+import { ListView } from '../ListView';
+import type { Task, User } from '../data';
+
+describe('ListView Component', () => {
+    const mockUser: User = { id: 'u1', name: 'Test User', email: 'test@example.com', role: 'emp', dept: 'dev', avatar: 'TU', color: '#000' };
+    const mockUsers = [mockUser];
+
+    // Test data
+    const mockTasks: Task[] = [
+        { id: 't1', title: 'Task 1', description: 'Desc', status: 'todo', priority: 'medium', assignee: 'u1', reporter: 'u1', dueDate: '2023-12-31', tags: [], subtasks: [], comments: [], activity: [], dependencies: [] },
+        { id: 't2', title: 'Task 2', description: 'Desc', status: 'done', priority: 'high', assignee: 'u1', reporter: 'u1', dueDate: '2023-12-31', tags: [], subtasks: [], comments: [], activity: [], dependencies: [] },
+    ];
+
+    const mockOnTaskClick = vi.fn();
+    const mockOnToggleDone = vi.fn();
+
+    beforeEach(() => {
+        vi.clearAllMocks();
+    });
+
+    it('renders tasks in list', () => {
+        render(<ListView tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onToggleDone={mockOnToggleDone} filterUser={null} searchQuery="" users={mockUsers} />);
+
+        expect(screen.getByText('Task 1')).toBeInTheDocument();
+        expect(screen.getByText('Task 2')).toBeInTheDocument();
+        // Check for headers (using getAllByText because buttons also have these labels)
+        expect(screen.getAllByText('Title').length).toBeGreaterThan(0);
+        expect(screen.getAllByText('Assignee').length).toBeGreaterThan(0);
+        expect(screen.getAllByText('Status').length).toBeGreaterThan(0);
+    });
+
+    it('filters tasks by search', () => {
+        render(<ListView tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onToggleDone={mockOnToggleDone} filterUser={null} searchQuery="Task 1" users={mockUsers} />);
+
+        expect(screen.getByText('Task 1')).toBeInTheDocument();
+        expect(screen.queryByText('Task 2')).not.toBeInTheDocument();
+    });
+
+    it('handles task click', () => {
+        render(<ListView tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onToggleDone={mockOnToggleDone} filterUser={null} searchQuery="" users={mockUsers} />);
+
+        fireEvent.click(screen.getByText('Task 1'));
+        expect(mockOnTaskClick).toHaveBeenCalledWith(mockTasks[0]);
+    });
+
+    it('handles toggle done', () => {
+        render(<ListView tasks={mockTasks} currentUser={mockUser} onTaskClick={mockOnTaskClick} onToggleDone={mockOnToggleDone} filterUser={null} searchQuery="" users={mockUsers} />);
+
+        const checkboxes = screen.getAllByRole('checkbox');
+        fireEvent.click(checkboxes[0]);
+
+        expect(mockOnToggleDone).toHaveBeenCalledWith('t1');
+    });
+});

src/__tests__/Login.test.tsx

@@ -0,0 +1,107 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, waitFor } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { LoginPage } from '../Login';
+import * as api from '../api';
+
+// Mock API
+vi.mock('../api', () => ({
+    apiLogin: vi.fn(),
+    apiRegister: vi.fn(),
+}));
+
+describe('LoginPage Component', () => {
+    const mockOnLogin = vi.fn();
+
+    beforeEach(() => {
+        vi.clearAllMocks();
+        mockOnLogin.mockClear();
+    });
+
+    it('renders login form by default', () => {
+        render(<LoginPage onLogin={mockOnLogin} />);
+        expect(screen.getByText(/scrum-manager/i)).toBeInTheDocument(); // Logo check
+        expect(screen.getByLabelText(/email/i)).toBeInTheDocument();
+        expect(screen.getByLabelText(/password/i)).toBeInTheDocument();
+        expect(screen.getByRole('button', { name: /sign in/i })).toBeInTheDocument();
+        expect(screen.getByText(/no account\? register here/i)).toBeInTheDocument();
+    });
+
+
+    it('switches to register mode', async () => {
+        render(<LoginPage onLogin={mockOnLogin} />);
+        await userEvent.click(screen.getByText(/no account\? register here/i));
+
+        expect(screen.getByLabelText(/name/i)).toBeInTheDocument();
+        expect(screen.getByRole('button', { name: /create account/i })).toBeInTheDocument();
+        expect(screen.getByText(/already have an account\? sign in/i)).toBeInTheDocument();
+    });
+
+    it('handles successful login', async () => {
+        const mockUser = { id: 'u1', name: 'Test', email: 'test@example.com', role: 'emp', dept: 'dev' };
+        (api.apiLogin as any).mockResolvedValue(mockUser);
+
+        render(<LoginPage onLogin={mockOnLogin} />);
+
+        await userEvent.type(screen.getByLabelText(/email/i), 'test@example.com');
+        await userEvent.type(screen.getByLabelText(/password/i), 'password');
+        await userEvent.click(screen.getByRole('button', { name: /sign in/i }));
+
+        await waitFor(() => {
+            expect(api.apiLogin).toHaveBeenCalledWith('test@example.com', 'password');
+            expect(mockOnLogin).toHaveBeenCalledWith(mockUser);
+        });
+    });
+
+    it('handles login failure', async () => {
+        (api.apiLogin as any).mockRejectedValue(new Error('Invalid credentials'));
+
+        render(<LoginPage onLogin={mockOnLogin} />);
+
+        await userEvent.type(screen.getByLabelText(/email/i), 'wrong@example.com');
+        await userEvent.type(screen.getByLabelText(/password/i), 'wrongpass');
+        await userEvent.click(screen.getByRole('button', { name: /sign in/i }));
+
+        await waitFor(() => {
+            expect(screen.getByText(/invalid credentials/i)).toBeInTheDocument();
+        });
+        expect(mockOnLogin).not.toHaveBeenCalled();
+    });
+
+    it('handles successful registration', async () => {
+        const mockUser = { id: 'u2', name: 'New User', email: 'new@example.com', role: 'employee', dept: 'dev' };
+        (api.apiRegister as any).mockResolvedValue(mockUser);
+
+        render(<LoginPage onLogin={mockOnLogin} />);
+        await userEvent.click(screen.getByText(/no account\? register here/i));
+
+        await userEvent.type(screen.getByLabelText(/name/i), 'New User');
+        await userEvent.type(screen.getByLabelText(/email/i), 'new@example.com');
+        await userEvent.type(screen.getByLabelText(/password/i), 'password123');
+        await userEvent.type(screen.getByLabelText(/department/i), 'DevOps'); // "e.g. Backend..." placeholder, checking label
+
+        await userEvent.click(screen.getByRole('button', { name: /create account/i }));
+
+        await waitFor(() => {
+            expect(api.apiRegister).toHaveBeenCalledWith({
+                name: 'New User',
+                email: 'new@example.com',
+                password: 'password123',
+                role: 'employee', // Default
+                dept: 'DevOps'
+            });
+            expect(mockOnLogin).toHaveBeenCalledWith(mockUser);
+        });
+    });
+
+    it('validates registration inputs', async () => {
+        render(<LoginPage onLogin={mockOnLogin} />);
+        await userEvent.click(screen.getByText(/no account\? register here/i));
+
+        await userEvent.click(screen.getByRole('button', { name: /create account/i }));
+
+        expect(screen.getByText(/all fields are required/i)).toBeInTheDocument();
+        expect(api.apiRegister).not.toHaveBeenCalled();
+    });
+});

src/__tests__/TaskDrawer.test.tsx

@@ -0,0 +1,108 @@
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { TaskDrawer } from '../TaskDrawer';
+import type { Task, User } from '../data';
+
+// Mock Shared components to avoid testing their specific implementation here
+vi.mock('../Shared', () => ({
+    Avatar: ({ userId }: any) => <div data-testid="avatar">{userId}</div>,
+    Tag: ({ label }: any) => <div>{label}</div>,
+    ProgressBar: () => <div>Progress</div>
+}));
+
+describe('TaskDrawer Component', () => {
+    const mockUser: User = { id: 'u1', name: 'Test User', email: 'test@example.com', role: 'emp', dept: 'dev', avatar: 'TU', color: '#000' };
+    const mockUsers = [mockUser, { id: 'u2', name: 'Other User', email: 'other@example.com', role: 'emp', dept: 'dev', avatar: 'OU', color: '#fff' }];
+
+    const mockTask: Task = {
+        id: 't1',
+        title: 'Test Task',
+        description: 'Test Description',
+        status: 'todo',
+        priority: 'medium',
+        assignee: 'u1',
+        reporter: 'u1',
+        dueDate: '2023-12-31',
+        tags: ['bug'],
+        subtasks: [],
+        comments: [],
+        activity: [],
+        dependencies: []
+    };
+
+    const mockOnUpdate = vi.fn();
+    const mockOnClose = vi.fn();
+    const mockOnAddDep = vi.fn();
+    const mockOnToggleDep = vi.fn();
+    const mockOnRemoveDep = vi.fn();
+
+    beforeEach(() => {
+        vi.clearAllMocks();
+    });
+
+    it('renders task details correctly', () => {
+        render(<TaskDrawer task={mockTask} currentUser={mockUser} onClose={mockOnClose} onUpdate={mockOnUpdate} onAddDependency={mockOnAddDep} onToggleDependency={mockOnToggleDep} onRemoveDependency={mockOnRemoveDep} users={mockUsers} />);
+
+        // screen.debug();
+
+        expect(screen.getByText('Test Task')).toBeInTheDocument();
+        expect(screen.getByText('Test Description')).toBeInTheDocument();
+        // Check for mocked avatar with userId
+        const avatars = screen.getAllByTestId('avatar');
+        expect(avatars.length).toBeGreaterThan(0);
+        expect(avatars[0]).toHaveTextContent('u1');
+        // expect(screen.getByText(/Test User/i)).toBeInTheDocument(); // Assignee name might be tricky in Select/Div 
+        expect(screen.getByText('bug')).toBeInTheDocument();
+    });
+
+    it('updates title/description calling onUpdate', async () => {
+        // Title isn't editable in the drawer based on code, only via modal or just display? 
+        // Checking code: <h2 className="drawer-title">{task.title}</h2>. It's not an input.
+        // But status, priority, assignee are selects.
+
+        render(<TaskDrawer task={mockTask} currentUser={mockUser} onClose={mockOnClose} onUpdate={mockOnUpdate} onAddDependency={mockOnAddDep} onToggleDependency={mockOnToggleDep} onRemoveDependency={mockOnRemoveDep} users={mockUsers} />);
+
+        // Update status
+        const statusSelect = screen.getByRole('combobox', { name: /status/i });
+        await userEvent.selectOptions(statusSelect, 'done');
+
+        expect(mockOnUpdate).toHaveBeenCalledWith(expect.objectContaining({
+            id: 't1',
+            status: 'done'
+        }));
+    });
+
+    it('adds a subtask', async () => {
+        render(<TaskDrawer task={mockTask} currentUser={mockUser} onClose={mockOnClose} onUpdate={mockOnUpdate} onAddDependency={mockOnAddDep} onToggleDependency={mockOnToggleDep} onRemoveDependency={mockOnRemoveDep} users={mockUsers} />);
+
+        const input = screen.getByPlaceholderText(/add a subtask/i);
+        await userEvent.type(input, 'New Subtask{enter}');
+
+        expect(mockOnUpdate).toHaveBeenCalledWith(expect.objectContaining({
+            subtasks: expect.arrayContaining([expect.objectContaining({ title: 'New Subtask', done: false })])
+        }));
+    });
+
+    it('adds a comment', async () => {
+        render(<TaskDrawer task={mockTask} currentUser={mockUser} onClose={mockOnClose} onUpdate={mockOnUpdate} onAddDependency={mockOnAddDep} onToggleDependency={mockOnToggleDep} onRemoveDependency={mockOnRemoveDep} users={mockUsers} />);
+
+        const input = screen.getByPlaceholderText(/add a comment/i);
+        await userEvent.type(input, 'This is a comment{enter}');
+
+        expect(mockOnUpdate).toHaveBeenCalledWith(expect.objectContaining({
+            comments: expect.arrayContaining([expect.objectContaining({ text: 'This is a comment', userId: 'u1' })])
+        }));
+    });
+
+    it('adds a dependency', async () => {
+        render(<TaskDrawer task={mockTask} currentUser={mockUser} onClose={mockOnClose} onUpdate={mockOnUpdate} onAddDependency={mockOnAddDep} onToggleDependency={mockOnToggleDep} onRemoveDependency={mockOnRemoveDep} users={mockUsers} />);
+
+        const descInput = screen.getByPlaceholderText(/describe the dependency/i);
+        await userEvent.type(descInput, 'Blocked by API{enter}');
+
+        // Default select is "Anyone" (empty string). 
+        expect(mockOnAddDep).toHaveBeenCalledWith('t1', { dependsOnUserId: '', description: 'Blocked by API' });
+    });
+});

src/api.ts

@@ -0,0 +1,107 @@
+const API_BASE = '/api';
+
+async function request(url: string, options?: RequestInit) {
+    const res = await fetch(`${API_BASE}${url}`, {
+        headers: { 'Content-Type': 'application/json' },
+        ...options,
+    });
+    if (!res.ok) {
+        const err = await res.json().catch(() => ({ error: res.statusText }));
+        throw new Error(err.error || 'Request failed');
+    }
+    return res.json();
+}
+
+// Auth
+export async function apiLogin(email: string, password: string) {
+    return request('/auth/login', {
+        method: 'POST',
+        body: JSON.stringify({ email, password }),
+    });
+}
+
+export async function apiRegister(data: {
+    name: string; email: string; password: string; role?: string; dept?: string;
+}) {
+    return request('/auth/register', {
+        method: 'POST',
+        body: JSON.stringify(data),
+    });
+}
+
+export async function apiFetchUsers() {
+    return request('/auth/users');
+}
+
+// Tasks
+export async function apiFetchTasks() {
+    return request('/tasks');
+}
+
+export async function apiCreateTask(task: {
+    title: string; description?: string; status?: string; priority?: string;
+    assignee?: string; reporter?: string; dueDate?: string; tags?: string[];
+    subtasks?: { title: string; done: boolean }[];
+    dependencies?: { dependsOnUserId: string; description: string }[];
+}) {
+    return request('/tasks', {
+        method: 'POST',
+        body: JSON.stringify(task),
+    });
+}
+
+export async function apiUpdateTask(id: string, updates: Record<string, unknown>) {
+    return request(`/tasks/${id}`, {
+        method: 'PUT',
+        body: JSON.stringify(updates),
+    });
+}
+
+export async function apiAddSubtask(taskId: string, title: string) {
+    return request(`/tasks/${taskId}/subtasks`, {
+        method: 'POST',
+        body: JSON.stringify({ title }),
+    });
+}
+
+export async function apiToggleSubtask(taskId: string, subtaskId: string, done: boolean) {
+    return request(`/tasks/${taskId}/subtasks/${subtaskId}`, {
+        method: 'PUT',
+        body: JSON.stringify({ done }),
+    });
+}
+
+export async function apiAddComment(taskId: string, userId: string, text: string) {
+    return request(`/tasks/${taskId}/comments`, {
+        method: 'POST',
+        body: JSON.stringify({ userId, text }),
+    });
+}
+
+export async function apiAddActivity(taskId: string, text: string) {
+    return request(`/tasks/${taskId}/activity`, {
+        method: 'POST',
+        body: JSON.stringify({ text }),
+    });
+}
+
+// Dependencies
+export async function apiAddDependency(taskId: string, dep: { dependsOnUserId: string; description: string }) {
+    return request(`/tasks/${taskId}/dependencies`, {
+        method: 'POST',
+        body: JSON.stringify(dep),
+    });
+}
+
+export async function apiToggleDependency(taskId: string, depId: string, resolved: boolean) {
+    return request(`/tasks/${taskId}/dependencies/${depId}`, {
+        method: 'PUT',
+        body: JSON.stringify({ resolved }),
+    });
+}
+
+export async function apiRemoveDependency(taskId: string, depId: string) {
+    return request(`/tasks/${taskId}/dependencies/${depId}`, {
+        method: 'DELETE',
+    });
+}

src/data.ts

@@ -1,29 +1,20 @@
-const now = new Date();
-const d = (offset: number) => {
-  const dt = new Date(now);
-  dt.setDate(dt.getDate() + offset);
-  return dt.toISOString().split('T')[0];
-};
-
-export const USERS = [
-  { id: 'u1', name: 'Subodh Pawar', role: 'cto', email: 'subodh@corp.io', pass: 'cto123', color: '#818cf8', avatar: 'SP', dept: 'Leadership' },
-  { id: 'u2', name: 'Ankit Sharma', role: 'employee', email: 'ankit@corp.io', pass: 'emp123', color: '#f59e0b', avatar: 'AS', dept: 'DevOps' },
-  { id: 'u3', name: 'Priya Nair', role: 'employee', email: 'priya@corp.io', pass: 'emp123', color: '#34d399', avatar: 'PN', dept: 'Backend' },
-  { id: 'u4', name: 'Rahul Mehta', role: 'employee', email: 'rahul@corp.io', pass: 'emp123', color: '#f472b6', avatar: 'RM', dept: 'Frontend' },
-  { id: 'u5', name: 'Deepa Iyer', role: 'manager', email: 'deepa@corp.io', pass: 'mgr123', color: '#fb923c', avatar: 'DI', dept: 'QA' },
-];
-
-export type User = typeof USERS[number];
 export type Priority = 'critical' | 'high' | 'medium' | 'low';
 export type Status = 'todo' | 'inprogress' | 'review' | 'done';
 
+export interface User {
+  id: string; name: string; role: string; email: string;
+  color: string; avatar: string; dept: string;
+}
+
 export interface Subtask { id: string; title: string; done: boolean }
 export interface Comment { id: string; userId: string; text: string; timestamp: string }
 export interface Activity { id: string; text: string; timestamp: string }
+export interface Dependency { id: string; dependsOnUserId: string; description: string; resolved: boolean }
 export interface Task {
   id: string; title: string; description: string; status: Status; priority: Priority;
   assignee: string; reporter: string; dueDate: string; tags: string[];
   subtasks: Subtask[]; comments: Comment[]; activity: Activity[];
+  dependencies: Dependency[];
 }
 
 export const PRIORITY_COLORS: Record<Priority, { color: string; bg: string }> = {
@@ -41,77 +32,4 @@ export const STATUS_LABELS: Record<Status, string> = {
   todo: 'To Do', inprogress: 'In Progress', review: 'Review', done: 'Done',
 };
 
-export const SEED_TASKS: Task[] = [
-  {
-    id: 't1', title: 'ArgoCD pipeline for staging', description: 'Set up ArgoCD GitOps pipeline for the staging environment with automatic sync and rollback capabilities.',
-    status: 'inprogress', priority: 'critical', assignee: 'u2', reporter: 'u1', dueDate: d(3), tags: ['devops', 'ci-cd'],
-    subtasks: [{ id: 's1', title: 'Configure ArgoCD manifest', done: true }, { id: 's2', title: 'Setup GitOps repo structure', done: false }, { id: 's3', title: 'Test rollback workflow', done: false }],
-    comments: [{ id: 'c1', userId: 'u1', text: 'Make sure we use Helm charts for this.', timestamp: '2026-02-14T10:22:00' }],
-    activity: [{ id: 'a1', text: '🔄 Subodh moved to In Progress', timestamp: '2026-02-14T10:22:00' }, { id: 'a2', text: '✅ Ankit completed subtask "Configure ArgoCD manifest"', timestamp: '2026-02-14T14:30:00' }],
-  },
-  {
-    id: 't2', title: 'Harbor registry cleanup script', description: 'Write a cron-based cleanup script to remove stale Docker images older than 30 days from Harbor.',
-    status: 'todo', priority: 'medium', assignee: 'u3', reporter: 'u5', dueDate: d(8), tags: ['backend', 'devops'],
-    subtasks: [{ id: 's4', title: 'Draft retention policy', done: false }, { id: 's5', title: 'Write cleanup script', done: false }],
-    comments: [{ id: 'c2', userId: 'u5', text: 'Coordinate with DevOps for registry credentials.', timestamp: '2026-02-13T09:00:00' }],
-    activity: [{ id: 'a3', text: '📝 Deepa created task', timestamp: '2026-02-13T09:00:00' }, { id: 'a4', text: '👤 Assigned to Priya', timestamp: '2026-02-13T09:01:00' }],
-  },
-  {
-    id: 't3', title: 'SonarQube quality gate fix', description: 'Fix failing quality gates in SonarQube for the API microservice — coverage is below threshold.',
-    status: 'review', priority: 'high', assignee: 'u2', reporter: 'u1', dueDate: d(1), tags: ['quality', 'testing'],
-    subtasks: [{ id: 's6', title: 'Identify uncovered code paths', done: true }, { id: 's7', title: 'Write missing unit tests', done: true }, { id: 's8', title: 'Verify gate passes', done: false }],
-    comments: [{ id: 'c3', userId: 'u1', text: 'Coverage must be above 80%.', timestamp: '2026-02-12T11:00:00' }, { id: 'c4', userId: 'u2', text: 'Currently at 76%, adding tests now.', timestamp: '2026-02-13T15:00:00' }],
-    activity: [{ id: 'a5', text: '🔄 Ankit moved to Review', timestamp: '2026-02-14T16:00:00' }, { id: 'a6', text: '✅ Ankit completed 2 subtasks', timestamp: '2026-02-14T15:30:00' }],
-  },
-  {
-    id: 't4', title: 'MinIO bucket lifecycle policy', description: 'Configure lifecycle policies for MinIO buckets to auto-expire temporary uploads after 7 days.',
-    status: 'done', priority: 'low', assignee: 'u5', reporter: 'u1', dueDate: d(-2), tags: ['infrastructure'],
-    subtasks: [{ id: 's9', title: 'Define lifecycle rules', done: true }, { id: 's10', title: 'Apply and test policy', done: true }],
-    comments: [{ id: 'c5', userId: 'u5', text: 'Done and verified on staging.', timestamp: '2026-02-13T17:00:00' }],
-    activity: [{ id: 'a7', text: '✅ Deepa moved to Done', timestamp: '2026-02-13T17:00:00' }, { id: 'a8', text: '💬 Deepa added a comment', timestamp: '2026-02-13T17:01:00' }],
-  },
-  {
-    id: 't5', title: 'Jenkins shared library refactor', description: 'Refactor Jenkins shared libraries to use declarative pipeline syntax and reduce duplication.',
-    status: 'inprogress', priority: 'high', assignee: 'u2', reporter: 'u5', dueDate: d(6), tags: ['devops', 'refactor'],
-    subtasks: [{ id: 's11', title: 'Audit existing shared libs', done: true }, { id: 's12', title: 'Migrate to declarative syntax', done: false }, { id: 's13', title: 'Update pipeline docs', done: false }],
-    comments: [{ id: 'c6', userId: 'u2', text: 'Found 12 redundant pipeline stages.', timestamp: '2026-02-14T10:00:00' }],
-    activity: [{ id: 'a9', text: '🔄 Ankit started working', timestamp: '2026-02-13T11:00:00' }, { id: 'a10', text: '✅ Completed audit subtask', timestamp: '2026-02-14T10:00:00' }],
-  },
-  {
-    id: 't6', title: 'Grafana k8s dashboard', description: 'Create comprehensive Grafana dashboards for Kubernetes cluster monitoring including pod health and resource usage.',
-    status: 'todo', priority: 'medium', assignee: 'u4', reporter: 'u1', dueDate: d(12), tags: ['monitoring', 'frontend'],
-    subtasks: [{ id: 's14', title: 'Design dashboard layout', done: false }, { id: 's15', title: 'Configure Prometheus data sources', done: false }],
-    comments: [{ id: 'c7', userId: 'u1', text: 'Use the standard k8s mixin as a starting point.', timestamp: '2026-02-12T14:00:00' }],
-    activity: [{ id: 'a11', text: '📝 Subodh created task', timestamp: '2026-02-12T14:00:00' }, { id: 'a12', text: '👤 Assigned to Rahul', timestamp: '2026-02-12T14:01:00' }],
-  },
-  {
-    id: 't7', title: 'React component audit', description: 'Audit all React components for accessibility compliance and performance optimizations.',
-    status: 'inprogress', priority: 'medium', assignee: 'u4', reporter: 'u5', dueDate: d(5), tags: ['frontend', 'a11y'],
-    subtasks: [{ id: 's16', title: 'Run Lighthouse audit', done: true }, { id: 's17', title: 'Fix critical a11y issues', done: false }, { id: 's18', title: 'Document findings', done: false }],
-    comments: [{ id: 'c8', userId: 'u4', text: 'Initial Lighthouse score is 72.', timestamp: '2026-02-14T08:00:00' }],
-    activity: [{ id: 'a13', text: '🔄 Rahul moved to In Progress', timestamp: '2026-02-13T09:00:00' }, { id: 'a14', text: '✅ Completed Lighthouse audit', timestamp: '2026-02-14T08:00:00' }],
-  },
-  {
-    id: 't8', title: 'PostgreSQL backup strategy', description: 'Implement automated daily backups for PostgreSQL with point-in-time recovery and off-site storage.',
-    status: 'todo', priority: 'critical', assignee: 'u3', reporter: 'u1', dueDate: d(2), tags: ['database', 'infrastructure'],
-    subtasks: [{ id: 's19', title: 'Setup pg_basebackup cron', done: false }, { id: 's20', title: 'Configure WAL archiving', done: false }, { id: 's21', title: 'Test restore procedure', done: false }],
-    comments: [{ id: 'c9', userId: 'u1', text: 'This is critical — we need backups before the release.', timestamp: '2026-02-14T09:00:00' }],
-    activity: [{ id: 'a15', text: '📝 Subodh created task', timestamp: '2026-02-14T09:00:00' }, { id: 'a16', text: '⚠️ Marked as Critical priority', timestamp: '2026-02-14T09:01:00' }],
-  },
-  {
-    id: 't9', title: 'API rate limiting middleware', description: 'Add rate limiting middleware to the Express API with configurable thresholds per endpoint.',
-    status: 'review', priority: 'high', assignee: 'u3', reporter: 'u5', dueDate: d(4), tags: ['backend', 'security'],
-    subtasks: [{ id: 's22', title: 'Research rate limiting libraries', done: true }, { id: 's23', title: 'Implement middleware', done: true }, { id: 's24', title: 'Add integration tests', done: false }],
-    comments: [{ id: 'c10', userId: 'u3', text: 'Using express-rate-limit with Redis store.', timestamp: '2026-02-14T16:00:00' }, { id: 'c11', userId: 'u5', text: 'Please add tests before moving to done.', timestamp: '2026-02-15T09:00:00' }],
-    activity: [{ id: 'a17', text: '🔄 Priya moved to Review', timestamp: '2026-02-14T16:00:00' }, { id: 'a18', text: '💬 Deepa added a comment', timestamp: '2026-02-15T09:00:00' }],
-  },
-  {
-    id: 't10', title: 'Mobile responsive QA sweep', description: 'Complete QA sweep of all pages for mobile responsiveness across iOS and Android devices.',
-    status: 'done', priority: 'low', assignee: 'u5', reporter: 'u1', dueDate: d(-5), tags: ['qa', 'mobile'],
-    subtasks: [{ id: 's25', title: 'Test on iOS Safari', done: true }, { id: 's26', title: 'Test on Android Chrome', done: true }, { id: 's27', title: 'File bug reports', done: true }],
-    comments: [{ id: 'c12', userId: 'u5', text: 'All pages pass on both platforms. 3 minor bugs filed.', timestamp: '2026-02-10T15:00:00' }],
-    activity: [{ id: 'a19', text: '✅ Deepa moved to Done', timestamp: '2026-02-10T15:00:00' }, { id: 'a20', text: '🐛 3 bugs filed in tracker', timestamp: '2026-02-10T15:30:00' }],
-  },
-];
-
-export function getUserById(id: string) { return USERS.find(u => u.id === id); }
+export function getUserById(users: User[], id: string) { return users.find(u => u.id === id); }

src/test/setup.ts

@@ -0,0 +1,2 @@
+
+import '@testing-library/jest-dom';

tests/integration/health.test.ts

@@ -0,0 +1,36 @@
+
+import { describe, it, expect } from 'vitest';
+// fetch is global in Node 18+
+
+describe('Integration Tests', () => {
+    const FRONTEND_URL = 'http://localhost:80';
+    const BACKEND_URL = 'http://localhost:3001';
+
+    it('Frontend is reachable', async () => {
+        try {
+            const res = await fetch(FRONTEND_URL);
+            expect(res.status).toBe(200);
+            const text = await res.text();
+            expect(text).toContain('<!doctype html>');
+        } catch (e) {
+            // If fetch fails (connection refused), test fails
+            throw new Error(`Frontend not reachable at ${FRONTEND_URL}: ${e.message}`);
+        }
+    });
+
+    it('Backend health check / API is reachable', async () => {
+        // We don't have a specific health endpoint, but we can try to hit an auth endpoint 
+        // that requires valid input, expecting a 400 or 401 instead of connection refused.
+        try {
+            const res = await fetch(`${BACKEND_URL}/api/auth/login`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({})
+            });
+            // Expecting 400 because we sent empty body, meaning server is up and parsing JSON
+            expect(res.status).toBe(400);
+        } catch (e) {
+            throw new Error(`Backend not reachable at ${BACKEND_URL}: ${e.message}`);
+        }
+    });
+});

vite.config.ts

@@ -1,7 +1,22 @@
-import { defineConfig } from 'vite'
+/// <reference types="vitest" />
+import { defineConfig } from 'vitest/config'
 import react from '@vitejs/plugin-react'
 
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  server: {
+    host: '0.0.0.0',
+    proxy: {
+      '/api': {
+        target: 'http://backend:3001',
+        changeOrigin: true,
+      },
+    },
+  },
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: './src/test/setup.ts',
+  },
 })

vitest.integration.config.js

@@ -0,0 +1,11 @@
+
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+    test: {
+        globals: true,
+        environment: 'node',
+        include: ['tests/integration/**/*.test.ts', 'tests/integration/**/*.test.js'],
+        testTimeout: 20000,
+    },
+});