dev-script.ndjson

# The chat client's core-logic loop, headless: replay with
#   native dev --core --script dev-script.ndjson
# Msgs dispatch into update; each Gateway SSE line is an ordinary Msg, so
# deltas and terminals are fed back by hand exactly as the transcript's
# `cmd fetch ...` lines invite — the same loop the native app runs, with
# you standing in for the network.

# The API key arrives through the env channel as an ordinary Msg (under
# the real app the generated wiring dispatches it from the environment
# at install). The endpoint and openai/gpt-5.6-luna default are fixed in
# core.ts; nothing dials out under the core host.
{"kind":"key_set","value":{"$bytes":"example-gateway-key"}}

# Type a message (the composer runs the SDK byte-splice text engine) and
# send. The transcript shows the streaming fetch command whole: POST, the
# Gateway endpoint, SSE accept and runtime-built authorization headers,
# and the JSON body — system prompt first, then history and stream:true.
{"kind":"draft_edit","edit":{"kind":"insert_text","text":{"$bytes":"Say hi in two words"}}}
{"kind":"send"}

# Two Gateway deltas grow the pending assistant response immediately. The
# explicit [DONE] marker and HTTP terminal then commit the whole turn.
{"kind":"chat_line","line":{"$bytes":"data: {\"choices\":[{\"delta\":{\"content\":\"Hi\\n\"}}]}"}}
{"kind":"chat_line","line":{"$bytes":"data: {\"choices\":[{\"delta\":{\"content\":\"there!\"}}]}"}}
{"kind":"chat_line","line":{"$bytes":"data: [DONE]"}}
{"kind":"chat_done","status":200}

# A second turn grows the history: watch the request body carry both
# earlier turns before the new question.
{"kind":"draft_edit","edit":{"kind":"insert_text","text":{"$bytes":"And a follow-up?"}}}
{"kind":"send"}

# This time the Gateway fails with its own JSON error line — the failed
# state keeps the history and surfaces error.message as the reason.
{"kind":"chat_line","line":{"$bytes":"{\"error\":{\"message\":\"model overloaded\",\"type\":\"server_error\"}}"}}
{"kind":"chat_done","status":500}

# Retry re-sends the SAME conversation (no new turn); a success resolves
# it into the fourth turn.
{"kind":"retry"}
{"kind":"chat_line","line":{"$bytes":"data: {\"choices\":[{\"delta\":{\"content\":\"Certainly.\"}}]}"}}
{"kind":"chat_line","line":{"$bytes":"data: [DONE]"}}
{"kind":"chat_done","status":200}