# Source Index

This skill is an original, task-centered synthesis. Sources inform concepts and
terminology; the repository does not reproduce protected prose, tables, diagrams,
examples, taxonomies, or chapter structures.

| Source | Use in this skill | URL |
|---|---|---|
| Agent Skills specification | Progressive disclosure, relative references, and skill structure | https://agentskills.io/specification |
| CloudEvents | Event identity and envelope boundary considerations | https://cloudevents.io/ |
| Martin Fowler, Event Sourcing | Distinguishing event history from ordinary event publication | https://martinfowler.com/eaaDev/EventSourcing.html |
| Martin Fowler, Strangler Fig Application | Incremental coexistence vocabulary | https://martinfowler.com/bliki/StranglerFigApplication.html |
| Martin Fowler, Parallel Change | Compatibility-first change sequencing | https://martinfowler.com/bliki/ParallelChange.html |
| PostgreSQL documentation | Transaction isolation and failure behavior | https://www.postgresql.org/docs/current/transaction-iso.html |
| OpenTelemetry documentation | Trace and metric instrumentation concepts | https://opentelemetry.io/docs/ |

## Ownership Notes

- DDD concepts and anti-corruption boundaries route to `programming-principles`.
- Event contract and delivery semantics route to `api-design-and-evolution`.
- Cross-system transition and recovery route to `migration-engineering`.
- Schema and pipeline operations route to `data-engineering`.
- Security controls and sensitive logging route to `secure-software-engineering`.
- Release promotion and rollback mechanics route to `release-engineering`.

The private architecture comparison report supplied for this task was used only as
safe synthesized research input. Purchased ebooks were not read or quoted. Future
edits should be rewritten from user tasks and public sources if wording or structure
resembles a source too closely.