Wave D: native AgentEvent wire + client session rewrite (SDK purged)

sorokin.oleg.edu/learnharness

Server: ui-stream.ts is verbatim pi AgentEvent passthrough (SSE data
lines + [DONE]); only app-level events are the loop-level error and
turn-settled terminal; onError carries raw provider text (owner ruling).

Client: useChat + the AI-SDK transport replaced by components/session-core.ts
(SessionModel: 409 identity-retry, optimistic c_ appends, absorbed()
adoption, needsContinuation, shared consume for POST + reattach) and the
session.ts hook; the golden-master grouping canon moved client-side into
core/view.ts (projectView); scanners read the native record (phaseAt3Lh,
danglingQuestionOf, graph toolParts, plan-blocks, runner, extraction).

Coverage: the native message is the unit (fork 3) with the call+result
inseparability bond rule; view-line-less messages (markers, error
results) are invisible to coverage and never checkpointed.

Deletes: chat-transport, projection, ui-message, their tests (ported to
tests/session-core.test.ts), and the ai + @ai-sdk/react dependencies —
the Vercel SDK is fully out of the tree. Wire pins in chat-flow rewritten
onto the AgentEvent dialect (eventsOf parser).

Gates: tsc clean, 994/994 tests, eslint clean, build green; live smoke
on PORT=3004 (verbatim wire → native record).

This commit is contained in:

amosblomqvist

2026-09-26 01:52:47 +03:00

parent 7c0e8d9a50

commit f3003d357a

44 changed files with 2299 additions and 2205 deletions

									
										src/server/chat-handler.ts
									
		-1
	
												View File
												
				@@ -322,7 +322,6 @@ export async function handleChatInput(

						// late views reattach via GET /api/chats/[id]/stream.

						const handle = runPiTurn({

							agent: constructed,

							base: merged,

							// Stream-level failures are provider/transport internals — masked,

							// like the SDK defaults. Tool-input validation messages never

							// route through here: they ride the error-result path and reach the