Problem: the hexagon's Phase 2 (plans/2026-08-15-hexagonal-architecture.md)
must give the use-cases-to-be their contract surface: driven-port
interfaces, test fakes, the secrets interface moved into core, and the
postgres package inside the adapters tree — before the first vertical
slice (Phase 3) can wire a composition root.
Change:
- internal/core/ports: full driven-port catalog per plan §3.3 —
repositories as transaction-scoped aggregates whose inputs carry
derived checks, audit, and events (§3.6), plus CommandExecutor,
TargetResolver, Checker, Secrets, EventPublisher, Provisioner.
Port-local payload types (Event, AuditEntry, CheckDef, KnowledgeEntry,
ExecResult) keep signatures off infrastructure; TypeTree aliases
internal/ontology (pure over domain) until checkdefaults is absorbed.
ReadModels intentionally not declared yet — it materializes with the
Phase 3 slice and grows as report handlers rewire.
- secrets.Backend is now an alias of ports.Secrets; implementations
(Infisical, SOPS, Manager) unchanged. mcp's local secretBackend
subset is deleted; tool constructors take ports.Secrets.
- internal/db → internal/adapters/postgres (mechanical import rewrite;
package identifier stays db until the Phase 3 repository split).
sqlc.yaml, Makefile, golangci exclusions, and docs follow the move;
make generate-check verified.
- internal/adapters/ssh: Executor implements ports.CommandExecutor over
the actuator dial pool + RunStreaming (10-min default timeout carried
over from the httpapi path).
- internal/adapters/remote: Resolver implements ports.TargetResolver
delegating to internal/remote (still pool-based; drops onto
ports.EntityRepository when repositories land in Phase 3 — documented
transitional import).
- internal/core/ports/portstest: importable fakes — in-memory
EntityRepo (with check-then-act SetState, side-effect recording),
RecordingExecutor, FakeChecker, SpyPublisher; port-satisfaction
guards; tests.
Risk: ports are declared ahead of implementations — signatures firm up
per phase as slices land (documented in the package doc); the
remote→postgres transitional import is explicit and dissolves in
Phase 3.
Verification: go vet, make test (race, 19 packages), generate-check,
golangci on core+adapters — 0 issues; full-repo baseline down
365→344.
