Add v3 protocol testing support (governance, SI, capabilities) #204
Description
Summary
The `@adcp/client/testing` module currently supports testing media buy agents (`discovery`, `full_sales_flow`, `signals_flow`, etc.) but lacks support for v3 protocols introduced in AdCP 3.0:
- Governance Protocol - property lists and content standards
- Sponsored Intelligence Protocol - SI session lifecycle
- Capability Discovery - `get_adcp_capabilities` task
Current Test Scenarios
```typescript
type TestScenario =
| 'health_check' | 'discovery' | 'create_media_buy' | 'full_sales_flow'
| 'creative_sync' | 'creative_inline' | 'creative_reference' | 'pricing_models'
| 'creative_flow' | 'signals_flow' | 'error_handling' | 'validation'
| 'pricing_edge_cases' | 'temporal_validation' | 'behavior_analysis' | 'response_consistency';
```
Requested Additions
1. Governance Protocol Testing
New scenarios to test governance agents:
| Scenario | Description |
|---|---|
| `property_list_crud` | Create, read, update, delete property lists |
| `property_list_filters` | Test GARM categories, MFA scores, custom tags |
| `get_property_features` | Verify feature discovery |
| `content_standards_crud` | Create, read, update content standards |
| `calibrate_content` | Test calibration dialogue flow |
| `validate_content_delivery` | Batch delivery validation |
2. SI Protocol Testing
New scenarios to test SI agents as a client (not as a host):
| Scenario | Description |
|---|---|
| `si_session_lifecycle` | Full session: initiate → messages → terminate |
| `si_availability_check` | Test `si_check_availability` |
| `si_message_exchange` | Verify message/response schema compliance |
| `si_ui_elements` | Validate UI element rendering in responses |
| `si_handoff` | Test transaction handoff flow |
3. Capability Discovery Testing
| Scenario | Description |
|---|---|
| `capability_discovery` | Verify `get_adcp_capabilities` returns valid v3 response |
| `protocol_negotiation` | Test that reported protocols match implemented tools |
4. v3 Breaking Change Validation
Schema-level validation for v3 migrations:
- Channel taxonomy (v3 has 19 channels vs v2's 5)
- Pricing fields (`fixed_rate` → `fixed_price`, `price_guidance.floor` → `floor_price`)
- Creative assignments (weighted `creative_assignments` vs `creative_ids`)
- Geo targeting (explicit `system` field)
- Format assets (`assets_required` → `assets` array with `required` boolean)
Use Case
Addie (AgenticAdvertising.org's community agent) uses `@adcp/client/testing` via `test_adcp_agent` to help members validate their agent implementations. Currently Addie can only test media buy agents, leaving governance and SI agents without compliance testing.
Related
- v3 schemas: `static/schemas/source/property/`, `static/schemas/source/content-standards/`, `static/schemas/source/sponsored-intelligence/`
- Migration guide: `docs/reference/migrating-to-v3.mdx`