diff --git a/croppa/main.py b/croppa/main.py
index 051ce31..70e5594 100644
--- a/croppa/main.py
+++ b/croppa/main.py
@@ -9,7 +9,6 @@ import time
 import re
 import json
 
-
 class VideoEditor:
     # Configuration constants
     BASE_FRAME_DELAY_MS = 16  # ~60 FPS
@@ -90,8 +89,6 @@ class VideoEditor:
         self.window_height = 800
 
         # Seeking state
-        self.is_seeking = False
-        self.current_seek_key = None
         self.key_first_press_time = 0
         self.last_seek_time = 0
         
@@ -1225,7 +1222,7 @@ class VideoEditor:
         window_title = "Image Editor" if self.is_image_mode else "Video Editor"
         cv2.imshow(window_title, canvas)
 
-    def mouse_callback(self, event, x, y, flags, param):
+    def mouse_callback(self, event, x, y, flags, _):
         """Handle mouse events"""
         # Handle timeline interaction (not for images)
         if self.timeline_rect and not self.is_image_mode:
diff --git a/pyproject.toml b/pyproject.toml
index 5e6c6a2..be002b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,7 @@ requires-python = ">=3.13"
 dependencies = [
     "opencv-python>=4.12.0.88",
     "ruff>=0.12.12",
+    "vulture>=2.14",
 ]
 
 [project.scripts]
@@ -22,3 +23,7 @@ include = ["main.py"]
 members = [
     "croppa",
 ]
+
+[tool.ruff]
+# Ensure F841 is enabled (it's part of default linting)
+select = ["F841"]
diff --git a/uv.lock b/uv.lock
index 491b4a0..1eb131b 100644
--- a/uv.lock
+++ b/uv.lock
@@ -30,12 +30,14 @@ source = { editable = "." }
 dependencies = [
     { name = "opencv-python" },
     { name = "ruff" },
+    { name = "vulture" },
 ]
 
 [package.metadata]
 requires-dist = [
     { name = "opencv-python", specifier = ">=4.12.0.88" },
     { name = "ruff", specifier = ">=0.12.12" },
+    { name = "vulture", specifier = ">=2.14" },
 ]
 
 [[package]]
@@ -108,3 +110,12 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/85/60/d1e335417804df452589271818749d061b22772b87efda88354cf35cdb7a/ruff-0.12.12-py3-none-win_amd64.whl", hash = "sha256:e99620bf01884e5f38611934c09dd194eb665b0109104acae3ba6102b600fd0d", size = 13178016, upload-time = "2025-09-04T16:50:12.559Z" },
     { url = "https://files.pythonhosted.org/packages/28/7e/61c42657f6e4614a4258f1c3b0c5b93adc4d1f8575f5229d1906b483099b/ruff-0.12.12-py3-none-win_arm64.whl", hash = "sha256:2a8199cab4ce4d72d158319b63370abf60991495fb733db96cd923a34c52d093", size = 12256762, upload-time = "2025-09-04T16:50:15.737Z" },
 ]
+
+[[package]]
+name = "vulture"
+version = "2.14"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/8e/25/925f35db758a0f9199113aaf61d703de891676b082bd7cf73ea01d6000f7/vulture-2.14.tar.gz", hash = "sha256:cb8277902a1138deeab796ec5bef7076a6e0248ca3607a3f3dee0b6d9e9b8415", size = 58823, upload-time = "2024-12-08T17:39:43.319Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/a0/56/0cc15b8ff2613c1d5c3dc1f3f576ede1c43868c1bc2e5ccaa2d4bcd7974d/vulture-2.14-py2.py3-none-any.whl", hash = "sha256:d9a90dba89607489548a49d557f8bac8112bd25d3cbc8aeef23e860811bd5ed9", size = 28915, upload-time = "2024-12-08T17:39:40.573Z" },
+]