Phase 1 item 7, done in the order the parity doc asks: read the dead design into a note, then delete it.
`docs/opencode-serve-path.md` records what `event-mapper.ts` and the SSE half of `client.ts` did, and
what a rebuild would want back from them — the delta model and tool-state transitions, which are exactly
parity Phase 3's token streaming rather than new work.
Deleted: `event-mapper.ts` entirely, and `subscribe`/the shared `GET /event` SSE loop, `createSession`,
`postMessage`, `abort` from the client, plus `isServerHealthy` from server-manager. All had no callers.
`client.ts` goes 200-odd lines to 99. What stays is the REST reads the chat list and transcript use:
listSessions, getSession, getMessages, deleteSession, renameSession.
While in there, Phase 2's blocking question turned out to be cheap to settle, so it is answered rather
than left open. The review asked whether the serve can take a per-request directory, since without one a
serve-based turn path would reintroduce the single-directory coupling that shelved this work:
POST /session?directory=/tmp/oc-phase2-probe -> directory: "/tmp/oc-phase2-probe" honoured
POST /session with directory in the BODY -> directory: "<serve cwd>" ignored
It is a query parameter on every /session* route. So the coupling is gone on both architectures and the
blocker is cleared. The note does NOT start the migration: which of the three options to take is a
product call, and it lays them out rather than presuming one.
The first probe put `directory` in the body and appeared to prove the opposite. Recorded in the note,
because it is the obvious way to test this and it gives a confident wrong answer.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
