boc/packages/application

@landvex/application

Application layer — orchestrates domain operations.

Architecture

UI → Application Layer (commands/handlers) → Domain → Repository Interfaces → Adapters

No business logic here. Only orchestration.

Commands

Command	Purpose
CreateFieldSessionCommand	Start a new field session
CreateMissionCommand	Create a mission within a session
RegisterArtifactCommand	Register an artifact
CreateObservationCommand	Create an observation
CreateDecisionCaseCommand	Create a decision case
ApproveDecisionCommand	Approve a decision
StartReviewCommand	Start a review
CompleteReviewCommand	Complete a review

Handlers

Handler	Command	Result
CreateFieldSessionHandler	CreateFieldSessionCommand	Result<{ session }>
CreateMissionHandler	CreateMissionCommand	Result<{ mission }>
CreateDecisionCaseHandler	CreateDecisionCaseCommand	Result<{ decisionCase }>
ApproveDecisionHandler	ApproveDecisionCommand	Result<{ decisionCase }>

Result Pattern

const result = await handler.execute(command);

if (result.success) {
  // Use result.data
} else {
  // Handle result.error
}

End-to-End Test

use-cases/end-to-end-flow.test.ts proves the full flow works in memory:

CreateFieldSession → CreateMission → CreateDecisionCase → ApproveDecision

Without PostgreSQL, Redis, S3, API, HTTP, or UI.

Dependencies

• @landvex/domain — domain objects and factories
• @landvex/infrastructure — repository interfaces and in-memory adapters