v0.3 overview

v0.3 moves Agent App from a complete package draft to an executable standard layer. The goal is that hosts can validate, project, install, run, and review product-level apps without embedding vertical business logic in the host core.

Core changes

• Stronger JSON schemas for descriptors: entries, permissions, services, workflows, Knowledge templates, Skill refs, Tool refs, Artifact types, Evals, secrets, and overlay templates.
• Typed SDK expectations for @lime/app-sdk, including stable error codes, cancellation, retries, idempotency, provenance, and mocks.
• Runtime ABI guidance for UI bundles, workers, workflows, artifact viewers, settings, and background tasks.
• Overlay templates for tenant, workspace, user, and customer differences.
• scene / home are compatibility-only; v0.3 apps use page, command, workflow, artifact, background-task, or settings.
• Projection provenance now includes packageHash as well as manifestHash.
• Reference example is APP 内容工厂 / content-factory-app.

Good fits

• Content factory systems.
• Customer support workbenches.
• Sales SOP apps.
• Contract review products.
• Investment research workbenches.
• Internal process apps.