project-standart-arch

<purpose> <item>Capture architecture decisions, constraints, and contracts for safe implementation</item> <item>Reduce integration and scaling risks before task decomposition starts</item> </purpose> <when_to_use> <item importance="critical">After PRD and use cases, before epics and decomposition</item> <item importance="high">When integrations, migrations, public contracts, or non-functional risks exist</item> </when_to_use> <required_preload> <item>shared-base-rules</item> <item>shared-docs-paths</item> <item>planning-impact-analysis</item> <item>planning-risk-assessment</item> <item>planning-migration-strategy</item> </required_preload> <document_target> <rule importance="critical">Create/update `arch.md`</rule> </document_target> <method> <step>Define components, responsibility boundaries, and key data flows</step> <step>Capture contracts: API/events/schema and compatibility</step> <step>Document architecture decisions and trade-offs</step> <step>List risks, mitigations, and fallback strategies</step> <step>Define constraints for epics and tasks (implementation guardrails)</step> </method> <output_format> <section>Architecture goals and constraints</section> <section>Component model and data flows</section> <section>Interfaces and contracts</section> <section>Key decisions and trade-offs</section> <section>Risks and mitigations</section> <section>Implementation guardrails</section> </output_format> <quality_rules> <rule im...