diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6d33a35
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,82 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint-python:
+    name: Lint Python
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          version: "latest"
+
+      - name: Set up Python
+        run: uv python install 3.12
+
+      - name: Install dependencies
+        run: uv sync --dev
+
+      - name: Run ruff check
+        run: uv run ruff check .
+
+      - name: Run ruff format check
+        run: uv run ruff format --check .
+
+  lint-frontend:
+    name: Lint Frontend
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint
+
+      - name: Run Prettier check
+        run: npm run format:check
+
+      - name: Run TypeScript check
+        run: npm run typecheck
+
+  build-frontend:
+    name: Build Frontend
+    runs-on: ubuntu-latest
+    needs: [lint-frontend]
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
diff --git a/README.md b/README.md
index 8e86027..0e1e19f 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 ```sh
 curl -1sLf 'https://dl.cloudsmith.io/public/task/task/setup.deb.sh' | sudo -E bash
-task install
+task prepare
 ```
 
 ## Area
diff --git a/Taskfile.yml b/Taskfile.yml
index a048ce3..1ec6149 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -51,7 +51,51 @@ tasks:
       - uv run fastapi run server/main.py --port 8001
 
   lint:
-    desc: Lint and format Python code
+    desc: Lint all code (Python and TypeScript)
+    cmds:
+      - task: lint:python
+      - task: lint:frontend
+
+  lint:python:
+    desc: Lint Python code with ruff
+    cmds:
+      - uv run ruff check .
+
+  lint:frontend:
+    desc: Lint frontend TypeScript code
+    dir: frontend
+    cmds:
+      - npm run lint
+      - npm run format:check
+
+  format:
+    desc: Format all code (Python and TypeScript)
+    cmds:
+      - task: format:python
+      - task: format:frontend
+
+  format:python:
+    desc: Format Python code with ruff
     cmds:
       - uv run ruff check --fix .
       - uv run ruff format .
+
+  format:frontend:
+    desc: Format frontend TypeScript code
+    dir: frontend
+    cmds:
+      - npm run lint:fix
+      - npm run format
+
+  check:
+    desc: Run all checks (lint, typecheck, build)
+    cmds:
+      - task: lint
+      - task: typecheck
+      - task: build
+
+  typecheck:
+    desc: Type check frontend TypeScript code
+    dir: frontend
+    cmds:
+      - npm run typecheck