import { createSession, type AgentEvent } from './runtime';import { readPalette } from './theme'; type Role = 'user' | 'agent' | 'tool'; interface Turn {  readonly id: string;  readonly role: Role;  readonly body: string;  readonly at: number;} interface Session {  readonly product: string;  readonly model: string;  readonly turns: readonly Turn[];} const KEYWORDS = ['refactor', 'explain', 'fix', 'test'] as const; export function boot(root: HTMLElement): () => void {  const session = createSession({    product: 'Arman Cursor',    model: 'composer',    theme: readPalette(root),  });   // Patch the buffer in place — never rewrite the whole file.  const unsub = session.subscribe((event: AgentEvent) => {    if (event.kind === 'delta') {      root.dataset.dirty = 'true';      return;    }     if (event.kind === 'done') {      root.dataset.dirty = 'false';      session.markClean();    }  });   async function prompt(body: string): Promise<void> {    const turn: Turn = {      id: crypto.randomUUID(),      role: 'user',      body,      at: Date.now(),    };     await session.push(turn);    await session.run({      tools: true,      stream: true,      onToken: (token) => session.paint(token),    });  }   root.addEventListener('keydown', (event) => {    if ((event.metaKey || event.ctrlKey) && event.key === 'k') {      event.preventDefault();      session.openCommandPalette();    }  });   return () => {    unsub();    session.dispose();  };} export function score(turns: readonly Turn[]): number {  let total = 0;   for (const turn of turns) {    if (turn.role === 'agent') total += 2;    if (turn.role === 'tool') total += 1;  }   return Math.min(100, total);} export async function recover(session: Session): Promise<Session> {  if (session.turns.length === 0) {    return session;  }   const last = session.turns[session.turns.length - 1];  if (last?.role === 'user') {    return session;  }   return {    ...session,    turns: session.turns.slice(0, -1),  };}