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claude-engineering-plugin/plugins/compound-engineering/skills/ce-compound/references/yaml-schema.md
2026-03-29 14:21:13 -07:00

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# YAML Frontmatter Schema
`schema.yaml` in this directory is the canonical contract for `docs/solutions/` frontmatter written by `ce:compound`.
Use this file as the quick reference for:
- required fields
- enum values
- validation expectations
- category mapping
- track classification (bug vs knowledge)
## Tracks
The `problem_type` determines which **track** applies. Each track has different required and optional fields.
| Track | problem_types | Description |
|-------|--------------|-------------|
| **Bug** | `build_error`, `test_failure`, `runtime_error`, `performance_issue`, `database_issue`, `security_issue`, `ui_bug`, `integration_issue`, `logic_error` | Defects and failures that were diagnosed and fixed |
| **Knowledge** | `best_practice`, `documentation_gap`, `workflow_issue`, `developer_experience` | Practices, patterns, workflow improvements, and documentation |
## Required Fields (both tracks)
- **module**: Module or area affected
- **date**: ISO date in `YYYY-MM-DD`
- **problem_type**: One of the values listed in the Tracks table above
- **component**: One of `rails_model`, `rails_controller`, `rails_view`, `service_object`, `background_job`, `database`, `frontend_stimulus`, `hotwire_turbo`, `email_processing`, `brief_system`, `assistant`, `authentication`, `payments`, `development_workflow`, `testing_framework`, `documentation`, `tooling`
- **severity**: One of `critical`, `high`, `medium`, `low`
## Bug Track Fields
Required:
- **symptoms**: YAML array with 1-5 observable symptoms (errors, broken behavior)
- **root_cause**: One of `missing_association`, `missing_include`, `missing_index`, `wrong_api`, `scope_issue`, `thread_violation`, `async_timing`, `memory_leak`, `config_error`, `logic_error`, `test_isolation`, `missing_validation`, `missing_permission`, `missing_workflow_step`, `inadequate_documentation`, `missing_tooling`, `incomplete_setup`
- **resolution_type**: One of `code_fix`, `migration`, `config_change`, `test_fix`, `dependency_update`, `environment_setup`, `workflow_improvement`, `documentation_update`, `tooling_addition`, `seed_data_update`
## Knowledge Track Fields
No additional required fields beyond the shared ones. All fields below are optional:
- **applies_when**: Conditions or situations where this guidance applies
- **symptoms**: Observable gaps or friction that prompted this guidance
- **root_cause**: Underlying cause, if there is a specific one
- **resolution_type**: Type of change, if applicable
## Optional Fields (both tracks)
- **related_components**: Other components involved
- **tags**: Search keywords, lowercase and hyphen-separated
## Optional Fields (bug track only)
- **rails_version**: Rails version in `X.Y.Z` format
## Backward Compatibility
Docs created before the track system may have `symptoms`/`root_cause`/`resolution_type` on knowledge-type problem_types. These are valid legacy docs:
- Bug-track fields present on a knowledge-track doc are harmless. Do not strip them during refresh unless the doc is being rewritten for other reasons.
- When creating **new** docs, follow the track rules above.
## Category Mapping
- `build_error` -> `docs/solutions/build-errors/`
- `test_failure` -> `docs/solutions/test-failures/`
- `runtime_error` -> `docs/solutions/runtime-errors/`
- `performance_issue` -> `docs/solutions/performance-issues/`
- `database_issue` -> `docs/solutions/database-issues/`
- `security_issue` -> `docs/solutions/security-issues/`
- `ui_bug` -> `docs/solutions/ui-bugs/`
- `integration_issue` -> `docs/solutions/integration-issues/`
- `logic_error` -> `docs/solutions/logic-errors/`
- `developer_experience` -> `docs/solutions/developer-experience/`
- `workflow_issue` -> `docs/solutions/workflow-issues/`
- `best_practice` -> `docs/solutions/best-practices/`
- `documentation_gap` -> `docs/solutions/documentation-gaps/`
## Validation Rules
1. Determine the track from `problem_type` using the Tracks table.
2. All shared required fields must be present.
3. Bug-track required fields (`symptoms`, `root_cause`, `resolution_type`) must be present on bug-track docs.
4. Knowledge-track docs have no additional required fields beyond the shared ones.
5. Bug-track fields on existing knowledge-track docs are harmless (see Backward Compatibility).
6. Enum fields must match the allowed values exactly.
7. Array fields must respect min/max item counts.
8. `date` must match `YYYY-MM-DD`.
9. `rails_version`, if present, must match `X.Y.Z` and only applies to bug-track docs.