fix(ci): Remove macOS brew install from build job

Author: VoxHash

.github/workflows/ci.yml

@@ -63,10 +63,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y python3-pyqt6 python3-pyqt6.qtcharts
 
-      - name: Install system dependencies (macOS)
-        if: matrix.os == 'macos-latest'
-        run: |
-          brew install pyqt6
+      # PyQt6 is installed via pip from requirements.txt, no system package needed
 
       - name: Install dependencies
         run: |
@@ -107,10 +104,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y python3-pyqt6 python3-pyqt6.qtcharts
 
-      - name: Install system dependencies (macOS)
-        if: matrix.os == 'macos-latest'
-        run: |
-          brew install pyqt6
+      # PyQt6 is installed via pip from requirements.txt, no system package needed
 
       - name: Install dependencies
         run: |