Fix release workflow package install for GA checklist

Author: SsebowaDisan

.github/workflows/release.yml

@@ -24,6 +24,11 @@ jobs:
         with:
           python-version: "3.14"
 
+      - name: Install package (editable)
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e .[dev]
+
       - name: Release guard
         run: python tools/release_guard.py --require-ci --workflow ci.yml