chore: Remove redundant fast-validation.yml workflow

.gitea/workflows/fast-validation.yml

@@ -1,41 +0,0 @@
-name: Fast Validation
-
-on:
-  pull_request:
-    branches: [ main ]
-  workflow_dispatch:
-
-jobs:
-  quick-checks:
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v3
-
-      - name: YAML Lint
-        run: |
-          python3 -m pip install -q yamllint
-          yamllint -c "{extends: default}" .gitea/workflows/*.yml || true
-
-      - name: No Hardcoded Secrets
-        run: |
-          ! grep -r "Password=" .gitea/workflows/ --include="*.yml" | grep -v "secrets\." || exit 1
-
-      - name: JSON Validation
-        run: |
-          python3 -c "
-          import json, glob
-          for f in glob.glob('**/*.json', recursive=True):
-              try:
-                  with open(f) as file:
-                      json.load(file)
-              except Exception as e:
-                  print(f'ERROR: {f}: {e}')
-                  exit(1)
-          "
-
-      - name: Report Complete
-        if: success()
-        run: echo "Fast validation passed"