New crate restoring the design orchestrator (TS orchestrator.ts
phases 1-4, single-screen sequential) that the Rust migration
dropped. Pure crate — no winit/casement/agent dependency.
- types.rs: DocSink + LlmClient traits, CallRequest/LlmChunk/
Progress/RunSummary and friends
- intent.rs: classify_intent (design vs chat)
- plan.rs: OrchestratorPlan parse + heuristic fallback
- parse.rs: LLM output -> canonical PenNode trees
- plan_normalize.rs: single-screen plan normalization
- variables.rs: plan-derived $color-* seed/snapshot/rollback
- prompt.rs: planning + sub-agent prompt assembly via op-ai-skills
- scaffold.rs: single-screen canvas scaffold (InsertSubtree)
- subagent.rs: sequential sub-agent execution
- cleanup.rs: descendant_count + run_cleanup_passes (reusable for S3b)
- run.rs: Orchestrator::run() — 4-phase spine, spec §6 error/abort/
zero-content semantics
- test_support.rs: VecDocSink + ScriptedLlm test stubs
NOT verified locally: op-orchestrator depends on op-editor-core,
which does not currently build — vendor/jian is pinned to unpushed
commit 80121906 (see prior commit). Unit tests written throughout;
they run once the jian build is restored.
S3a Plan B + Plan C (orchestrator modules).
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