diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..eb2a835
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,25 @@
+version: 2
+updates:
+  - package-ecosystem: 'uv'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+      day: 'monday'
+      time: '09:00'
+      timezone: 'Europe/Istanbul'
+    open-pull-requests-limit: 5
+    groups:
+      minor-patch:
+        update-types:
+          - 'minor'
+          - 'patch'
+    labels:
+      - 'dependencies'
+
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'monthly'
+    labels:
+      - 'dependencies'
+      - 'ci'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..bb32efb
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Lint · Test
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v7
+
+      - uses: astral-sh/setup-uv@v7
+        with:
+          python-version: '3.12'
+          enable-cache: true
+
+      - name: Install dependencies
+        run: uv sync --frozen
+
+      - name: Lint (ruff)
+        run: uvx ruff check .
+
+      - name: Test (pytest)
+        run: uv run --frozen pytest -q
diff --git a/pyproject.toml b/pyproject.toml
index 4676b3b..f9e7591 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,3 +29,7 @@ build-backend = "hatchling.build"
 
 [tool.hatch.build.targets.wheel]
 packages = ["src/avimsin"]
+
+[tool.ruff.lint]
+# Errors only (pyflakes + syntax/runtime pycodestyle checks); style is not enforced.
+select = ["E4", "E7", "E9", "F"]
diff --git a/src/avimsin/alerts/watcher.py b/src/avimsin/alerts/watcher.py
index fc2bfd8..7f480b5 100644
--- a/src/avimsin/alerts/watcher.py
+++ b/src/avimsin/alerts/watcher.py
@@ -77,7 +77,7 @@ def detect_signals(
 def format_signal(signal: Signal, threshold: int) -> str:
     """Sinyali Telegram mesajına çevirir."""
     lines = [
-        f"🏹 <b>Avımsın sinyali</b>",
+        "🏹 <b>Avımsın sinyali</b>",
         f"Coin: <code>{signal.coin}</code>",
         f"{len(signal.wallets)}/{threshold} smart wallet'a token girişi:",
         "Transfer tabanlı gösterge; doğrulanmış swap/alım değildir.",
diff --git a/src/avimsin/scoring/engine.py b/src/avimsin/scoring/engine.py
index 32ef695..ff1a5b3 100644
--- a/src/avimsin/scoring/engine.py
+++ b/src/avimsin/scoring/engine.py
@@ -8,7 +8,7 @@
 
 from dataclasses import dataclass
 
-from ..collectors.transfers import ZERO_ADDRESS, TransferEvent
+from ..collectors.transfers import ZERO_ADDRESS
 from ..filters.base import WalletHistory
 
 
diff --git a/tests/fake_evm.py b/tests/fake_evm.py
index f40e39c..3af06cf 100644
--- a/tests/fake_evm.py
+++ b/tests/fake_evm.py
@@ -12,7 +12,6 @@
 import httpx
 
 from avimsin.chains.base import TRANSFER_TOPIC
-from avimsin.collectors.transfers import ZERO_ADDRESS
 
 CHAIN_ID = 4663