E2E Test Configuration

{"type": "Code", "is_required": true, "description": "E2E test infrastructure configuration: @e2e tag exclusion from default runs, --base-url parameter for environment targeting (local/staging/prod), --db-uri parameter for initial data loading, screenshot capture configuration (after every step), LiveServerTestCase integration for local runs, and multi-phase .feature execution setup. Enables 'certify any environment' pattern. Produced by TAF-06, consumed by BPE-05 and DCD-05."}