Replaced the old TEA brief with an indexed knowledge system: the agent now loads topic-specific

docs from knowledge/ via tea-index.csv, workflows reference those fragments, and risk/level/
  priority guidance lives in the new fragment files

src/modules/bmm/testarch/knowledge/test-levels-framework.md

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+<!-- Powered by BMAD-CORE™ -->
+
+# Test Levels Framework
+
+Comprehensive guide for determining appropriate test levels (unit, integration, E2E) for different scenarios.
+
+## Test Level Decision Matrix
+
+### Unit Tests
+
+**When to use:**
+
+- Testing pure functions and business logic
+- Algorithm correctness
+- Input validation and data transformation
+- Error handling in isolated components
+- Complex calculations or state machines
+
+**Characteristics:**
+
+- Fast execution (immediate feedback)
+- No external dependencies (DB, API, file system)
+- Highly maintainable and stable
+- Easy to debug failures
+
+**Example scenarios:**
+
+```yaml
+unit_test:
+  component: 'PriceCalculator'
+  scenario: 'Calculate discount with multiple rules'
+  justification: 'Complex business logic with multiple branches'
+  mock_requirements: 'None - pure function'
+```
+
+### Integration Tests
+
+**When to use:**
+
+- Component interaction verification
+- Database operations and transactions
+- API endpoint contracts
+- Service-to-service communication
+- Middleware and interceptor behavior
+
+**Characteristics:**
+
+- Moderate execution time
+- Tests component boundaries
+- May use test databases or containers
+- Validates system integration points
+
+**Example scenarios:**
+
+```yaml
+integration_test:
+  components: ['UserService', 'AuthRepository']
+  scenario: 'Create user with role assignment'
+  justification: 'Critical data flow between service and persistence'
+  test_environment: 'In-memory database'
+```
+
+### End-to-End Tests
+
+**When to use:**
+
+- Critical user journeys
+- Cross-system workflows
+- Visual regression testing
+- Compliance and regulatory requirements
+- Final validation before release
+
+**Characteristics:**
+
+- Slower execution
+- Tests complete workflows
+- Requires full environment setup
+- Most realistic but most brittle
+
+**Example scenarios:**
+
+```yaml
+e2e_test:
+  journey: 'Complete checkout process'
+  scenario: 'User purchases with saved payment method'
+  justification: 'Revenue-critical path requiring full validation'
+  environment: 'Staging with test payment gateway'
+```
+
+## Test Level Selection Rules
+
+### Favor Unit Tests When:
+
+- Logic can be isolated
+- No side effects involved
+- Fast feedback needed
+- High cyclomatic complexity
+
+### Favor Integration Tests When:
+
+- Testing persistence layer
+- Validating service contracts
+- Testing middleware/interceptors
+- Component boundaries critical
+
+### Favor E2E Tests When:
+
+- User-facing critical paths
+- Multi-system interactions
+- Regulatory compliance scenarios
+- Visual regression important
+
+## Anti-patterns to Avoid
+
+- E2E testing for business logic validation
+- Unit testing framework behavior
+- Integration testing third-party libraries
+- Duplicate coverage across levels
+
+## Duplicate Coverage Guard
+
+**Before adding any test, check:**
+
+1. Is this already tested at a lower level?
+2. Can a unit test cover this instead of integration?
+3. Can an integration test cover this instead of E2E?
+
+**Coverage overlap is only acceptable when:**
+
+- Testing different aspects (unit: logic, integration: interaction, e2e: user experience)
+- Critical paths requiring defense in depth
+- Regression prevention for previously broken functionality
+
+## Test Naming Conventions
+
+- Unit: `test_{component}_{scenario}`
+- Integration: `test_{flow}_{interaction}`
+- E2E: `test_{journey}_{outcome}`
+
+## Test ID Format
+
+`{EPIC}.{STORY}-{LEVEL}-{SEQ}`
+
+Examples:
+
+- `1.3-UNIT-001`
+- `1.3-INT-002`
+- `1.3-E2E-001`