parseBase64DataURL parses a data URL (e.g., "data:image/png;base64,iVBORw0KGgo...") and returns the MIME type and the base64 data separately

Helper function to create string pointers

stubConn returns a minimal ACPConn implementation that is safe to embed in a Backend as long as no RPC method is actually invoked. Used for Config.val

truncateStr shortens s to at most maxLen bytes, appending "..." if truncated. It avoids splitting multi-byte UTF-8 characters by backing off to a vali

Build creates a FLAT index using the specified metric type.

Build creates a BIN_FLAT index.

CreatePrefixCache creates a prefix context on the server side. The server will input the prefix cached context and this turn of input into the model f

CreatePrefixCache assembles inputs the same as Generate/Stream and writes the final system instruction, tools, and messages into a reusable prefix cac