package topup

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package topup
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Module Topup_runtimeSource

Functions callable from inside a user phrase to reach back across the local↔remote boundary. The in-process and named-local-session cases default to direct file I/O (the chatbot's filesystem is accessible directly). The routed-to-remote case is wired by install_hook to send a JSON-RPC request back to the local server.

Sourceval read_back : string -> bytes

Read the contents of a file on the orchestrator's filesystem. Raises Failure on I/O error or when the file exceeds TOPUP_XFER_MAX_BYTES (default 16 MiB).

Sourceval write_back : string -> bytes -> unit

Atomically write bytes to a file on the orchestrator's filesystem. Raises Failure on I/O error or when the payload exceeds TOPUP_XFER_MAX_BYTES.

Sourcetype io_hook = {
  1. read : string -> bytes;
  2. write : string -> bytes -> unit;
}
Sourceval direct_hook : io_hook

Default hook: direct file I/O on the current process's filesystem. Installed at module init.

Sourceval install_hook : io_hook -> unit

Replace the active hook. The remote daemon installs a muxed hook (back-channel JSON-RPC) when it accepts a connection; the default direct_hook is restored when the connection closes.