## Purpose

Canonical specification for end-to-end-system-testing requirements synced from OpenSpec change deltas.

## Requirements

### Requirement: End-to-end coverage spans UI, API, and DB effects
The system SHALL provide end-to-end tests that validate full workflows across UI, API, and persisted database outcomes.

#### Scenario: Core user flow E2E
- **WHEN** a core browsing flow is executed in E2E tests
- **THEN** UI behavior, API responses, and DB side effects match expected outcomes

### Requirement: Edge-case workflows are covered
The system SHALL include edge-case E2E tests for critical failure and boundary conditions.

#### Scenario: Failure-state E2E
- **WHEN** an edge case is triggered (empty data, unavailable upstream, invalid permalink, etc.)
- **THEN** system response remains stable and user-safe
- **AND** no unhandled runtime errors occur
