feat: add CEO role to all dropdowns and access lists

feat: add more roles (tech_lead, scrum_master, product_owner, designer, qa)
- 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
2026-02-16 12:33:42 +05:30 · 2026-02-16 12:31:54 +05:30 · 2026-02-16 12:25:56 +05:30
44 changed files with 5367 additions and 72 deletions
--- a/16
+++ b/16
@@ -1,12 +1,20 @@
-FROM node:22-alpine
+# Build Stage
+FROM node:22-alpine as build

 WORKDIR /app

-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci

 COPY . .
+RUN npm run build

-EXPOSE 5173
+# Production Stage
+FROM nginx:alpine

-CMD ["npm", "run", "dev", "--", "--host", "0.0.0.0"]
+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;"]
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -13,7 +13,7 @@ services:
    volumes:
      - mysql_data:/var/lib/mysql
    healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-pscrumpass"]
+      test: [ "CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-pscrumpass" ]
      interval: 5s
      timeout: 5s
      retries: 10
@@ -44,7 +44,7 @@ services:
    container_name: scrum-frontend
    restart: unless-stopped
    ports:
-      - "5173:5173"
+      - "80:80"
    depends_on:
      - backend

--- a/k8s/base/backend/deployment.yaml
+++ b/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
--- a/k8s/base/backend/service.yaml
+++ b/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
--- a/k8s/base/frontend/configmap.yaml
+++ b/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;
+        }
+    }
--- a/k8s/base/frontend/deployment.yaml
+++ b/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
--- a/k8s/base/frontend/service.yaml
+++ b/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
--- a/k8s/base/kustomization.yaml
+++ b/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
--- a/k8s/base/mysql/deployment.yaml
+++ b/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
--- a/k8s/base/mysql/pvc.yaml
+++ b/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
--- a/k8s/base/mysql/secret.yaml
+++ b/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==
--- a/k8s/base/mysql/service.yaml
+++ b/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
--- a/k8s/base/namespace.yaml
+++ b/k8s/base/namespace.yaml
@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: scrum-manager
+  labels:
+    app.kubernetes.io/part-of: scrum-manager
--- a/nginx.conf
+++ b/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;
+    }
+}
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/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"
  }
-}
+}
--- a/server/Dockerfile
+++ b/server/Dockerfile
@@ -2,8 +2,8 @@ FROM node:22-alpine

 WORKDIR /app

-COPY package.json package-lock.json* ./
-RUN npm install
+COPY package*.json ./
+RUN npm ci --only=production

 COPY . .

--- a/server/db.js
+++ b/server/db.js
@@ -1,20 +1,20 @@
 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,
+  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(`
+  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,
@@ -27,7 +27,7 @@ export async function initDB() {
      )
    `);

-        await conn.query(`
+    await conn.query(`
      CREATE TABLE IF NOT EXISTS tasks (
        id VARCHAR(36) PRIMARY KEY,
        title VARCHAR(500) NOT NULL,
@@ -43,7 +43,7 @@ export async function initDB() {
      )
    `);

-        await conn.query(`
+    await conn.query(`
      CREATE TABLE IF NOT EXISTS subtasks (
        id VARCHAR(36) PRIMARY KEY,
        task_id VARCHAR(36) NOT NULL,
@@ -53,7 +53,7 @@ export async function initDB() {
      )
    `);

-        await conn.query(`
+    await conn.query(`
      CREATE TABLE IF NOT EXISTS comments (
        id VARCHAR(36) PRIMARY KEY,
        task_id VARCHAR(36) NOT NULL,
@@ -65,7 +65,7 @@ export async function initDB() {
      )
    `);

-        await conn.query(`
+    await conn.query(`
      CREATE TABLE IF NOT EXISTS activities (
        id VARCHAR(36) PRIMARY KEY,
        task_id VARCHAR(36) NOT NULL,
@@ -75,7 +75,7 @@ export async function initDB() {
      )
    `);

-        await conn.query(`
+    await conn.query(`
      CREATE TABLE IF NOT EXISTS task_tags (
        id INT AUTO_INCREMENT PRIMARY KEY,
        task_id VARCHAR(36) NOT NULL,
@@ -85,10 +85,23 @@ export async function initDB() {
      )
    `);

-        console.log('✅ Database tables initialized');
-    } finally {
-        conn.release();
-    }
+    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;
--- a/server/index.js
+++ b/server/index.js
@@ -19,17 +19,24 @@ 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();
-        app.listen(PORT, () => {
-            console.log(`🚀 Backend server running on port ${PORT}`);
-        });
+        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);
    }
 }

-start();
+if (process.env.NODE_ENV !== 'test') {
+    start();
+}
+
+export { app, start };
--- a/server/package-lock.json
+++ b/server/package-lock.json
--- a/server/package.json
+++ b/server/package.json
@@ -4,12 +4,17 @@
    "private": true,
    "type": "module",
    "scripts": {
-        "start": "node index.js"
+        "start": "node index.js",
+        "test": "vitest"
    },
    "dependencies": {
-        "express": "^5.1.0",
-        "mysql2": "^3.14.1",
+        "bcryptjs": "^3.0.2",
        "cors": "^2.8.5",
-        "bcryptjs": "^3.0.2"
+        "express": "^5.1.0",
+        "mysql2": "^3.14.1"
+    },
+    "devDependencies": {
+        "supertest": "^7.2.2",
+        "vitest": "^4.0.18"
    }
 }
--- a/server/routes/tasks.js
+++ b/server/routes/tasks.js
@@ -4,7 +4,7 @@ import { randomUUID } from 'crypto';

 const router = Router();

-// Helper: fetch full task with subtasks, comments, activities, tags
+// 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;
@@ -14,6 +14,7 @@ async function getFullTask(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,
@@ -28,6 +29,7 @@ async function getFullTask(taskId) {
        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 })),
    };
 }

@@ -48,7 +50,7 @@ router.post('/', async (req, res) => {
    const conn = await pool.getConnection();
    try {
        await conn.beginTransaction();
-        const { title, description, status, priority, assignee, reporter, dueDate, tags, subtasks } = req.body;
+        const { title, description, status, priority, assignee, reporter, dueDate, tags, subtasks, dependencies } = req.body;
        const id = randomUUID();

        await conn.query(
@@ -70,6 +72,16 @@ router.post('/', async (req, res) => {
            }
        }

+        // 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 (?, ?, ?)',
@@ -188,6 +200,49 @@ router.post('/:id/activity', async (req, res) => {
    }
 });

+// --- 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 {
--- a/server/tests/auth.test.js
+++ b/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);
+        });
+    });
+});
--- a/server/tests/tasks.test.js
+++ b/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']
+            );
+        });
+    });
+});
--- a/server/vitest.config.js
+++ b/server/vitest.config.js
@@ -0,0 +1,9 @@
+
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+    test: {
+        globals: true,
+        environment: 'node',
+    },
+});
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,5 +1,5 @@
 import { useState, useEffect } from 'react';
-import { apiFetchTasks, apiFetchUsers, apiCreateTask, apiUpdateTask, apiAddActivity } from './api';
+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';
@@ -103,6 +103,7 @@ export default function App() {
        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) {
@@ -160,6 +161,31 @@ export default function App() {
    }
  };

+  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;
  const filteredMyTasks = tasks.filter(t => t.assignee === currentUser.id);

@@ -211,7 +237,7 @@ export default function App() {
        <BottomToggleBar activeView={activeView} onViewChange={handleViewChange} />
      )}

-      {activeTask && <TaskDrawer task={activeTask} currentUser={currentUser} onClose={() => setActiveTask(null)} onUpdate={handleUpdateTask} users={users} />}
+      {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 && (
--- a/src/Dashboard.tsx
+++ b/src/Dashboard.tsx
@@ -8,7 +8,7 @@ export function DashboardPage({ tasks, currentUser, users }: { tasks: Task[]; cu
    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;

--- a/src/Login.tsx
+++ b/src/Login.tsx
@@ -57,39 +57,45 @@ export function LoginPage({ onLogin }: { onLogin: (u: User) => void }) {

                {mode === 'register' && (
                    <>
-                        <label className="login-label">Name</label>
+                        <label className="login-label" htmlFor="register-name">Name</label>
                        <div className="login-input-wrap">
-                            <input className={`login-input ${error ? 'error' : ''}`} type="text" placeholder="Your full name"
+                            <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">Email</label>
+                <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>

                {mode === 'register' && (
                    <>
-                        <label className="login-label">Role</label>
+                        <label className="login-label" htmlFor="register-role">Role</label>
                        <div className="login-input-wrap">
-                            <select className="login-input" value={role} onChange={e => setRole(e.target.value)}>
+                            <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">Department</label>
+                        <label className="login-label" htmlFor="register-dept">Department</label>
                        <div className="login-input-wrap">
-                            <input className="login-input" type="text" placeholder="e.g. Backend, Frontend, DevOps"
+                            <input id="register-dept" className="login-input" type="text" placeholder="e.g. Backend, Frontend, DevOps"
                                value={dept} onChange={e => setDept(e.target.value)} />
                        </div>
                    </>
--- a/src/Pages.tsx
+++ b/src/Pages.tsx
@@ -59,7 +59,7 @@ export function MembersPage({ tasks, users }: { tasks: Task[]; users: User[] })
                        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)}>
@@ -99,7 +99,7 @@ export function MembersPage({ tasks, users }: { tasks: Task[]; users: User[] })
                            <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>
--- a/src/Shared.tsx
+++ b/src/Shared.tsx
@@ -51,7 +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>;
 }
--- a/src/Sidebar.tsx
+++ b/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 {
--- a/src/TaskDrawer.tsx
+++ b/src/TaskDrawer.tsx
@@ -6,12 +6,17 @@ 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, users }: 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();
@@ -49,8 +54,16 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate, users }: Draw
        setCommentText('');
    };

+    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 (
        <>
@@ -69,7 +82,7 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate, users }: Draw
                            <div className="drawer-meta-label">Assignee</div>
                            <div className="drawer-meta-val">
                                <Avatar userId={task.assignee} size={20} users={users} />
-                                <select className="drawer-select" value={task.assignee} onChange={e => updateField('assignee', e.target.value)}>
+                                <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>
@@ -80,13 +93,13 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate, users }: Draw
                        </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>
@@ -100,6 +113,50 @@ export function TaskDrawer({ task, currentUser, onClose, onUpdate, users }: Draw
                        </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} />}
@@ -162,16 +219,38 @@ interface ModalProps {
    currentUser: User;
 }

+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(users[0]?.id || '');
+    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${Date.now()}`, dependsOnUserId: depUser, description: depDesc }]);
+        setDepDesc('');
+        setDepUser('');
+    };
+
+    const removeDep = (id: string) => {
+        setDeps(prev => prev.filter(d => d.id !== id));
+    };
+
    const submit = () => {
        if (!title.trim()) { setError(true); return; }
        const task: Task = {
@@ -180,6 +259,7 @@ export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus, users
            tags: tags ? tags.split(',').map(t => t.trim()).filter(Boolean) : [],
            subtasks: [], comments: [],
            activity: [{ id: `a${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();
@@ -200,7 +280,7 @@ export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus, users
                    </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>)}
                            </select>
@@ -226,6 +306,33 @@ export function AddTaskModal({ onClose, onAdd, defaultDate, defaultStatus, users
                        <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>
--- a/src/tests/App.test.tsx
+++ b/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();
+    });
+});
--- a/src/tests/Kanban.test.tsx
+++ b/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]);
+    });
+});
--- a/src/tests/ListView.test.tsx
+++ b/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');
+    });
+});
--- a/src/tests/Login.test.tsx
+++ b/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();
+    });
+});
--- a/src/tests/TaskDrawer.test.tsx
+++ b/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' });
+    });
+});
--- a/src/api.ts
+++ b/src/api.ts
@@ -42,6 +42,7 @@ 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',
@@ -83,3 +84,24 @@ export async function apiAddActivity(taskId: string, text: string) {
        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',
+    });
+}
--- a/src/data.ts
+++ b/src/data.ts
@@ -9,10 +9,12 @@ export interface User {
 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 }> = {
--- a/src/index.css
+++ b/src/index.css
@@ -1655,6 +1655,281 @@ body {
  background: var(--accent-hover);
 }

+/* DEPENDENCIES */
+.dep-unresolved-badge {
+  background: rgba(239, 68, 68, 0.15);
+  color: #ef4444;
+  font-size: 11px;
+  font-weight: 600;
+  padding: 2px 8px;
+  border-radius: 10px;
+  margin-left: 8px;
+}
+
+.dep-empty {
+  color: var(--text-muted);
+  font-size: 12px;
+  padding: 8px 0;
+  font-style: italic;
+}
+
+.dep-item {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 8px 10px;
+  border-radius: 8px;
+  margin-bottom: 4px;
+  transition: background 0.15s;
+}
+
+.dep-item:hover {
+  background: rgba(255, 255, 255, 0.03);
+}
+
+.dep-unresolved {
+  border-left: 3px solid #ef4444;
+}
+
+.dep-resolved {
+  border-left: 3px solid #22c55e;
+  opacity: 0.7;
+}
+
+.dep-check {
+  width: 22px;
+  height: 22px;
+  border-radius: 50%;
+  border: 2px solid var(--text-muted);
+  background: none;
+  color: #22c55e;
+  font-size: 13px;
+  font-weight: 700;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.15s;
+  flex-shrink: 0;
+}
+
+.dep-check.checked {
+  border-color: #22c55e;
+  background: rgba(34, 197, 94, 0.15);
+}
+
+.dep-check:hover {
+  border-color: var(--accent);
+}
+
+.dep-info {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  min-width: 0;
+}
+
+.dep-user {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--accent);
+}
+
+.dep-desc {
+  font-size: 13px;
+  color: var(--text-primary);
+}
+
+.dep-desc.done {
+  text-decoration: line-through;
+  color: var(--text-muted);
+}
+
+.dep-remove {
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  font-size: 14px;
+  cursor: pointer;
+  padding: 4px;
+  border-radius: 4px;
+  opacity: 0;
+  transition: all 0.15s;
+}
+
+.dep-item:hover .dep-remove {
+  opacity: 1;
+}
+
+.dep-remove:hover {
+  color: #ef4444;
+  background: rgba(239, 68, 68, 0.1);
+}
+
+.dep-add-row {
+  display: flex;
+  gap: 6px;
+  margin-top: 8px;
+}
+
+.dep-add-select {
+  padding: 6px 8px;
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  color: var(--text-primary);
+  font-size: 12px;
+  font-family: inherit;
+  width: 140px;
+  outline: none;
+}
+
+.dep-add-select:focus {
+  border-color: var(--accent);
+}
+
+.dep-add-input {
+  flex: 1;
+  padding: 6px 10px;
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  color: var(--text-primary);
+  font-size: 12px;
+  font-family: inherit;
+  outline: none;
+}
+
+.dep-add-input:focus {
+  border-color: var(--accent);
+}
+
+.dep-add-btn {
+  padding: 6px 14px;
+  background: var(--accent);
+  border: none;
+  border-radius: 6px;
+  color: #fff;
+  font-size: 12px;
+  font-weight: 600;
+  cursor: pointer;
+  font-family: inherit;
+  white-space: nowrap;
+  transition: background 0.15s;
+}
+
+.dep-add-btn:hover {
+  background: var(--accent-hover);
+}
+
+/* Modal dependency styles */
+.modal-deps-list {
+  margin-bottom: 8px;
+}
+
+.modal-dep-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 6px 10px;
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  margin-bottom: 4px;
+  font-size: 13px;
+  border-left: 3px solid #f59e0b;
+}
+
+.modal-dep-icon {
+  font-size: 14px;
+}
+
+.modal-dep-user {
+  color: var(--accent);
+  font-weight: 600;
+  font-size: 12px;
+  white-space: nowrap;
+}
+
+.modal-dep-desc {
+  flex: 1;
+  color: var(--text-primary);
+}
+
+.modal-dep-remove {
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  font-size: 14px;
+  cursor: pointer;
+  padding: 2px 6px;
+  border-radius: 4px;
+}
+
+.modal-dep-remove:hover {
+  color: #ef4444;
+  background: rgba(239, 68, 68, 0.1);
+}
+
+.modal-dep-add {
+  display: flex;
+  gap: 6px;
+}
+
+.modal-dep-select {
+  padding: 8px 10px;
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  color: var(--text-primary);
+  font-size: 12px;
+  font-family: inherit;
+  width: 160px;
+  outline: none;
+}
+
+.modal-dep-select:focus {
+  border-color: var(--accent);
+}
+
+.modal-dep-input {
+  flex: 1;
+  padding: 8px 12px;
+  background: var(--bg-card);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  color: var(--text-primary);
+  font-size: 13px;
+  font-family: inherit;
+  outline: none;
+}
+
+.modal-dep-input:focus {
+  border-color: var(--accent);
+}
+
+.modal-dep-btn {
+  padding: 8px 14px;
+  background: var(--accent);
+  border: none;
+  border-radius: 8px;
+  color: #fff;
+  font-size: 12px;
+  font-weight: 600;
+  cursor: pointer;
+  font-family: inherit;
+  white-space: nowrap;
+  transition: background 0.15s;
+}
+
+.modal-dep-btn:hover {
+  background: var(--accent-hover);
+}
+
 /* DASHBOARD */
 .dashboard {
  padding: 20px;
--- a/src/test/setup.ts
+++ b/src/test/setup.ts
@@ -0,0 +1,2 @@
+
+import '@testing-library/jest-dom';
--- a/tests/integration/health.test.ts
+++ b/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}`);
+        }
+    });
+});
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,4 +1,5 @@
-import { defineConfig } from 'vite'
+/// <reference types="vitest" />
+import { defineConfig } from 'vitest/config'
 import react from '@vitejs/plugin-react'

 // https://vite.dev/config/
@@ -13,4 +14,9 @@ export default defineConfig({
      },
    },
  },
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: './src/test/setup.ts',
+  },
 })
--- a/vitest.integration.config.js
+++ b/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,
+    },
+});