Noyau de tour de canal

runtime.channel.turn.run(...)             // adapter-driven full pipeline
runtime.channel.turn.runPrepared(...)     // channel owns dispatch; kernel runs record + finalize
runtime.channel.turn.buildContext(...)    // pure facts to FinalizedMsgContext mapping

runtime.channel.turn.runResolved(...)      // deprecated compatibility alias; prefer run
runtime.channel.turn.dispatchAssembled(...) // deprecated compatibility alias; prefer run or runPrepared

await runtime.channel.turn.run({
  channel: "tlon",
  accountId,
  raw: platformEvent,
  adapter: {
    ingest(raw) {
      return {
        id: raw.messageId,
        timestamp: raw.timestamp,
        rawText: raw.body,
        textForAgent: raw.body,
      };
    },
    classify(input) {
      return { kind: "message", canStartAgentTurn: input.rawText.length > 0 };
    },
    async preflight(input, eventClass) {
      if (await isDuplicate(input.id)) {
        return { admission: { kind: "drop", reason: "dedupe" } };
      }
      return {};
    },
    resolveTurn(input) {
      return buildAssembledTurn(input);
    },
    onFinalize(result) {
      clearPendingGroupHistory(result);
    },
  },
});

const { dispatchResult } = await runtime.channel.turn.runPrepared({
  channel: "matrix",
  accountId,
  routeSessionKey,
  storePath,
  ctxPayload,
  recordInboundSession,
  record: {
    onRecordError,
    updateLastRoute,
  },
  onPreDispatchFailure: async (err) => {
    await stopStatusReactions();
  },
  runDispatch: async () => {
    return await runMatrixOwnedDispatcher();
  },
});

const ctxPayload = runtime.channel.turn.buildContext({
  channel: "googlechat",
  accountId,
  messageId,
  timestamp,
  from,
  sender,
  conversation,
  route,
  reply,
  message,
  access,
  media,
  supplemental,
});

type ChannelTurnAdapter<TRaw> = {
  ingest(raw: TRaw): Promise<NormalizedTurnInput | null> | NormalizedTurnInput | null;
  classify?(input: NormalizedTurnInput): Promise<ChannelEventClass> | ChannelEventClass;
  preflight?(
    input: NormalizedTurnInput,
    eventClass: ChannelEventClass,
  ): Promise<PreflightFacts | ChannelTurnAdmission | null | undefined>;
  resolveTurn(
    input: NormalizedTurnInput,
    eventClass: ChannelEventClass,
    preflight: PreflightFacts,
  ): Promise<ChannelTurnResolved> | ChannelTurnResolved;
  onFinalize?(result: ChannelTurnResult): Promise<void> | void;
};

type ChannelTurnDeliveryAdapter = {
  deliver(payload: ReplyPayload, info: ChannelDeliveryInfo): Promise<ChannelDeliveryResult | void>;
  onError?(err: unknown, info: { kind: string }): void;
};

type ChannelDeliveryResult = {
  messageIds?: string[];
  threadId?: string;
  replyToId?: string;
  visibleReplySent?: boolean;
};

record: {
  groupResolution,
  createIfMissing: true,
  updateLastRoute,
  onRecordError: (err) => log.warn("record failed", err),
  trackSessionMetaTask: (task) => pendingTasks.push(task),
}

await runtime.channel.turn.run({
  channel: "twitch",
  accountId,
  raw,
  adapter,
  log: (event) => {
    runtime.log?.debug?.(`turn.${event.stage}:${event.event}`, {
      channel: event.channel,
      accountId: event.accountId,
      messageId: event.messageId,
      sessionKey: event.sessionKey,
      admission: event.admission,
      reason: event.reason,
    });
  },
});