ci: auto-detect Poetry version from lock file in dependency validation

Author: FirstUnicorn

.github/workflows/validate-dependencies.yml

@@ -16,9 +16,25 @@ jobs:
         with:
           python-version: '3.10'
 
+      - name: Detect Poetry version from lock file
+        id: poetry-version
+        run: |
+          version="$(python - <<'PY'
+          import re
+          from pathlib import Path
+
+          first_line = Path('poetry.lock').read_text(encoding='utf-8').splitlines()[0]
+          match = re.search(r'Poetry ([0-9]+(?:\.[0-9]+)+)', first_line)
+          if not match:
+              raise SystemExit('Could not determine Poetry version from poetry.lock')
+          print(match.group(1))
+          PY
+          )"
+          echo "version=$version" >> "$GITHUB_OUTPUT"
+
       - name: Install Poetry and dependencies
         run: |
-          pip install poetry==2.3.3 tomli
+          pip install "poetry==${{ steps.poetry-version.outputs.version }}" tomli
       
       # Option 1: Poetry lock file validation
       - name: Check pyproject.toml validity