/** pi's sessions root, VENDORED from pi `config.getSessionsDir()` (= `<agentDir>/
 *  sessions`). pi's package `exports` map is `.`-only, so config.js can't be
 *  deep-imported, and a ROOT import of `getAgentDir` would eager-load the entire
 *  heavy pi SDK index on crtr's front-door hot path (the reason broker-sdk.ts
 *  dynamic-imports the engine). Mirrors pi: `PI_CODING_AGENT_DIR` env, else
 *  `~/.pi/agent` (APP_NAME defaults to 'pi'). Re-sync on a pi SDK bump that moves
 *  the sessions dir — same vendoring rationale as the slash-command list below. */
export declare function piSessionsRoot(): string;
/**
 * pi's builtin slash commands — vendored verbatim from pi `core/slash-commands.js`
 * `BUILTIN_SLASH_COMMANDS` (review C1). **21 entries at 0.78.1** (review n1 — NOT 23).
 *
 * Builtins are NOT engine-interpreted (`session.prompt('/model')` ships `/model`
 * to the LLM as literal text), so the broker's `get_commands` op MERGES this list
 * with the engine's registered commands/templates/skills, and the viewer
 * autocomplete parses these locally. Both the broker (T3) and the viewer (T6)
 * import this single copy.
 *
 * Upstream interpolates `${APP_NAME}` into the `quit` description; `APP_NAME`
 * defaults to "pi" (overridable via pi config), so the vendored copy hardcodes
 * "Quit pi".
 */
export declare const BUILTIN_SLASH_COMMANDS: ReadonlyArray<{
    name: string;
    description: string;
}>;