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1.6 KiB
SDK Architecture seam map for query/runtime surfaces
- Status: Superseded by ADR-0174 (2026-05-23); originally Accepted (2026-05-09)
- Date: 2026-05-09
We decided to keep SDK architecture explicitly module-seamed rather than allow feature logic to spread across query handlers, runtime adapters, and compatibility shims. This ADR is the top-level map for SDK seams and their ownership boundaries.
Decision
- Treat the SDK as a composition of explicit seam Modules with thin call-site Adapters.
- Keep compatibility policy isolated behind the SDK Package Seam Module (see
0007-sdk-package-seam-module.md). - Keep dispatch transport/outcome policy behind the Dispatch Policy Module and SDK Runtime Bridge Module (see
0001-dispatch-policy-module.mdamendment). - Keep model/runtime profile resolution behind the Model Catalog Module (see
0003-model-catalog-module.md). - Keep planning/worktree/workstream path-state policy behind the Planning Workspace Module (see
0004-worktree-workstream-seam-module.md). - Keep planning path projection policy explicit and centralized (detailed in
0006-planning-path-projection-module.md).
Consequences
- SDK callers (
init*, query handlers, runtime entry points) remain thin Adapters over stable interfaces. - Changes to package layout compatibility, dispatch transport, model policy, and planning path policy are localized to owning Modules.
- Architecture reviews can classify drift quickly: if behavior changes outside owning seam Module, it is a design violation.