`[2026-07-05]` **#347 v1 wire validated as reference consumer (GREEN).** Adopted positions: distinct sub-resource `POST /sessions/{id}/history` (not `generate:false`), model-invisible provenance (first-message immersion preserved), event-silence for authored seed, `seeded` lifecycle phase, per-session idempotency. Three pre-TDD flags folded into contract rev 1.1: assistant-first provider constraint (Anthropic-family 400s; vLLM/openai_compat OK), content limit is BYTES not chars, 409-active-generation for append-narrator. First-message (create-time, assistant, effects=none) fully served; append-narrator served for the assistant-voice subset (system deferred); debug-seed served for assistant turns (user injection deferred to a future import primitive).
