cleanup: remove unused workflow — Actions disabled, CI runs on Gitea

.github/workflows/railway-automation.yml

@@ -1,48 +0,0 @@
-name: Railway Secrets & Automation Audit
-
-on:
-  push:
-    branches: ["main", "claude/**"]
-  pull_request:
-    branches: ["main"]
-  schedule:
-    - cron: '0 6 * * *'
-  workflow_dispatch:
-
-jobs:
-  validate:
-    name: Validate Railway configuration
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Setup Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.11'
-
-      - name: Run Railway validation script
-        run: |
-          python scripts/railway/validate_env_template.py
-
-  summary:
-    name: Automation summary
-    runs-on: ubuntu-latest
-    needs: validate
-    if: always()
-
-    steps:
-      - name: Summarize results
-        run: |
-          echo ""
-          echo "╔════════════════════════════════════════════════════════╗"
-          if [ "${{ needs.validate.result }}" = "success" ]; then
-            echo "║     ✅ Railway secrets automation checks succeeded     ║"
-          else
-            echo "║     ❌ Railway automation detected configuration drift ║"
-          fi
-          echo "║        scripts/railway/validate_env_template.py        ║"
-          echo "║        keeps .env.example and Railway config synced    ║"
-          echo "╚════════════════════════════════════════════════════════╝"