Function try_parse_json_value

src/server/rest_handler.cpp:198–205

@brief Try to parse a JSON value from a string, returning the original string on failure.

///@brief Try to parse a JSON value from a string, returning the original string on failure.
static json try_parse_json_value(const std::string& s) {
    try {
        return json::parse(s);
    }
    catch (...) {
        return json(s);
    }
}

///@brief Convert OpenAI-style assistant tool_calls + following tool messages into the
/// Gemma4 chat-template format, which expects a single assistant message containing