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

docs/BRANCHING.md

@@ -15,21 +15,21 @@ master (production)
 
 ### 🟢 Development Environment
 - **Branch**: `develop`
-- **Domain**: `2048-dev.wa.darknex.us`
+- **Domain**: `${DEV_DOMAIN}`
 - **Trigger**: Push to `develop` branch
 - **Auto-deploy**: ✅ Yes
 - **Purpose**: Latest development features, may be unstable
 
 ### 🟡 Staging Environment  
 - **Branch**: `staging`
-- **Domain**: `2048-staging.wa.darknex.us`
+- **Domain**: `${STAGING_DOMAIN}`
 - **Trigger**: Push to `staging` branch
 - **Auto-deploy**: ✅ Yes
 - **Purpose**: Pre-production testing, stable features
 
 ### 🔴 Production Environment
 - **Branch**: `master`
-- **Domain**: `2048.wa.darknex.us`
+- **Domain**: `${PROD_DOMAIN}`
 - **Trigger**: Push to `master` branch OR GitHub Release
 - **Auto-deploy**: ✅ Yes
 - **Purpose**: Live production environment
@@ -59,7 +59,7 @@ git push origin feature/awesome-new-feature
 
 ```bash
 # 1. Merge feature to develop (via PR)
-# 2. Test in dev environment: 2048-dev.wa.darknex.us
+# 2. Test in dev environment: ${DEV_DOMAIN}
 
 # 3. Promote to staging
 git checkout staging
@@ -67,7 +67,7 @@ git pull origin staging
 git merge develop
 git push origin staging
 
-# 4. Test in staging: 2048-staging.wa.darknex.us
+# 4. Test in staging: ${STAGING_DOMAIN}
 ```
 
 ### Deploying to Production
@@ -83,7 +83,7 @@ git push origin master
 git tag -a v1.0.0 -m "Release version 1.0.0"
 git push origin v1.0.0
 
-# 3. Production deploys automatically: 2048.wa.darknex.us
+# 3. Production deploys automatically: ${PROD_DOMAIN}
 ```
 
 ### Hotfix Flow