chore(security): enhance environment configuration, CI workflows, and wallet daemon with security improvements

- Restructure .env.example with security-focused documentation, service-specific environment file references, and AWS Secrets Manager integration
- Update CLI tests workflow to single Python 3.13 version, add pytest-mock dependency, and consolidate test execution with coverage
- Add comprehensive security validation to package publishing workflow with manual approval gates, secret scanning, and release

config/environments/production/wallet-daemon.env.template

@@ -0,0 +1,45 @@
+# Wallet Daemon - Production Environment Template
+# DO NOT commit actual values - use AWS Secrets Manager in production
+
+# =============================================================================
+# CORE APPLICATION CONFIGURATION
+# =============================================================================
+APP_ENV=production
+DEBUG=false
+LOG_LEVEL=WARN
+
+# =============================================================================
+# SERVICE CONFIGURATION
+# =============================================================================
+# Coordinator Integration
+COORDINATOR_BASE_URL=https://api.aitbc.bubuit.net
+COORDINATOR_API_KEY=secretRef:api-keys:coordinator
+
+# REST API Configuration
+REST_PREFIX=/v1
+
+# =============================================================================
+# DATABASE CONFIGURATION
+# =============================================================================
+# Ledger Database Path (use persistent storage)
+LEDGER_DB_PATH=/data/wallet_ledger.db
+
+# =============================================================================
+# SECURITY CONFIGURATION
+# =============================================================================
+# Rate Limiting (production values)
+WALLET_RATE_LIMIT=30
+WALLET_RATE_WINDOW=60
+
+# =============================================================================
+# MONITORING
+# =============================================================================
+# Health Check Configuration
+HEALTH_CHECK_INTERVAL=30
+
+# =============================================================================
+# CLUSTER CONFIGURATION
+# =============================================================================
+# Kubernetes Settings
+POD_NAMESPACE=aitbc
+SERVICE_NAME=wallet-daemon