## Why

The platform needs stronger quality gates to ensure stable, predictable behavior across releases. A complete testing and review program will reduce regressions, improve confidence in deployments, and surface performance, accessibility, and security risks earlier.

## What Changes

- Introduce a unified automated test suite strategy covering unit, integration, and end-to-end paths.
- Add end-to-end test coverage for core UI flows, API contracts, and database state transitions.
- Add WCAG-focused accessibility checks and include them in quality gates.
- Add page speed and runtime performance checks with repeatable thresholds.
- Add baseline security testing (dependency, config, and common web vulnerability checks).
- Add user-experience validation scenarios for key journeys and failure states.
- Define comprehensive coverage expectations for critical features and edge cases.
- Add a structured code-review/remediation/optimization pass to resolve quality debt.
- Add performance monitoring and alerting requirements for production health visibility.

## Capabilities

### New Capabilities
- `platform-quality-gates`: Defines required CI quality gates and pass/fail criteria for release readiness.
- `end-to-end-system-testing`: Defines end-to-end testing coverage across UI, API, and database workflows.
- `security-and-performance-test-harness`: Defines security checks and page/runtime performance testing strategy.
- `observability-monitoring-and-alerting`: Defines performance monitoring signals, dashboards, and alerting thresholds.
- `code-review-remediation-workflow`: Defines structured remediation and optimization workflow after comprehensive review.

### Modified Capabilities
- `wcag-2-2-aa-accessibility`: Expand verification requirements to include automated accessibility testing in release gates.
- `delivery-and-rendering-performance`: Add enforceable page speed benchmarks and regression thresholds.
- `site-admin-safety-and-ergonomics`: Add operational verification requirements tied to maintenance command behaviors.

## Impact

- **Testing/Tooling:** New test suites, fixtures, and CI workflows for UI/API/DB/accessibility/security/performance.
- **Frontend/Backend:** Potential bug fixes and optimizations discovered during comprehensive test and review passes.
- **Operations:** Monitoring/alerting setup and documentation for performance and reliability signals.
- **Release Process:** Stronger quality gates before archive/release actions.
