feat: Complete PII cleanup and fully automatic pipeline

🧹 PII Cleanup & Security:
- Remove all hardcoded domains (darknex.us, hndrx.co)
- Remove all hardcoded emails (admin@ references)
- Replace all personal info with environment variables
- Repository now 100% generic and reusable

🚀 Fully Automatic Pipeline:
- Pipeline now runs automatically develop → staging → production
- No manual intervention required for production promotions
- Auto-promotion triggers after successful tests
- All workflows use commit-specific image tags

🔧 Environment Variables:
- All manifests use ${VARIABLE_NAME} syntax
- All scripts source from .env file
- GitHub Actions use secrets for sensitive data
- Complete .env.example template provided

📚 Documentation:
- New comprehensive WORKFLOWS.md with pipeline details
- New PIPELINE_QUICK_REFERENCE.md for quick reference
- Updated all docs to use generic placeholders
- Added security/privacy section to README

🔐 Security Enhancements:
- Updated .gitignore for all sensitive files
- Created PII verification script (verify-pii-removal.sh)
- Created cleanup automation script (cleanup-pii.sh)
- Repository verified PII-free and production-ready

BREAKING: Repository now requires .env configuration
- Copy .env.example to .env and configure for your environment
- Set GitHub repository secrets for CI/CD workflows
- All deployments now use environment-specific configuration

.github/workflows/smoke-test.yml

@@ -44,15 +44,15 @@ jobs:
       run: |
         case "${{ matrix.environment }}" in
           dev)
-            echo "CANONICAL_DOMAIN=https://game-2048-dev.game-2048-dev.dev.wa.darknex.us" >> $GITHUB_ENV
+            echo "CANONICAL_DOMAIN=https://${{ secrets.DEV_DOMAIN }}" >> $GITHUB_ENV
             echo "ENV_NAME=development" >> $GITHUB_ENV
             ;;
           staging)
-            echo "CANONICAL_DOMAIN=https://game-2048-staging.game-2048-staging.staging.wa.darknex.us" >> $GITHUB_ENV
+            echo "CANONICAL_DOMAIN=https://${{ secrets.STAGING_DOMAIN }}" >> $GITHUB_ENV
             echo "ENV_NAME=staging" >> $GITHUB_ENV
             ;;
           prod)
-            echo "CANONICAL_DOMAIN=https://game-2048-prod.game-2048-prod.wa.darknex.us" >> $GITHUB_ENV
+            echo "CANONICAL_DOMAIN=https://${{ secrets.PROD_DOMAIN }}" >> $GITHUB_ENV
             echo "ENV_NAME=production" >> $GITHUB_ENV
             ;;
         esac
@@ -157,9 +157,9 @@ jobs:
         
         # Canonical domains (Knative domains only)
         canonical_domains=(
-          "game-2048-dev.game-2048-dev.dev.wa.darknex.us"
-          "game-2048-staging.game-2048-staging.staging.wa.darknex.us"
-          "game-2048-prod.game-2048-prod.wa.darknex.us"
+          "${{ secrets.DEV_DOMAIN }}"
+          "${{ secrets.STAGING_DOMAIN }}"
+          "${{ secrets.PROD_DOMAIN }}"
         )
         
         for domain in "${canonical_domains[@]}"; do
@@ -179,9 +179,9 @@ jobs:
         
         # Canonical domains (Knative domains only)
         canonical_domains=(
-          "game-2048-dev.game-2048-dev.dev.wa.darknex.us"
-          "game-2048-staging.game-2048-staging.staging.wa.darknex.us"
-          "game-2048-prod.game-2048-prod.wa.darknex.us"
+          "${{ secrets.DEV_DOMAIN }}"
+          "${{ secrets.STAGING_DOMAIN }}"
+          "${{ secrets.PROD_DOMAIN }}"
         )
         
         for domain in "${canonical_domains[@]}"; do
@@ -231,9 +231,9 @@ jobs:
         echo "### Tested Canonical Domains" >> $GITHUB_STEP_SUMMARY
         
         # Use canonical domain format
-        DEV_URL="https://game-2048-dev.game-2048-dev.dev.wa.darknex.us"
-        STAGING_URL="https://game-2048-staging.game-2048-staging.staging.wa.darknex.us"
-        PROD_URL="https://game-2048-prod.game-2048-prod.wa.darknex.us"
+        DEV_URL="https://${{ secrets.DEV_DOMAIN }}"
+        STAGING_URL="https://${{ secrets.STAGING_DOMAIN }}"
+        PROD_URL="https://${{ secrets.PROD_DOMAIN }}"
         
         echo "- 🧪 Development: $DEV_URL" >> $GITHUB_STEP_SUMMARY
         echo "- 🎭 Staging: $STAGING_URL" >> $GITHUB_STEP_SUMMARY