Function reset_parser_state 

pub fn reset_parser_state(
    buffer: &mut String,
    prev_tool_call_arr: &mut Vec<Value>,
    current_tool_id: &mut i32,
    current_tool_name_sent: &mut bool,
    streamed_args_for_tool: &mut Vec<String>,
)

Reset the entire parser state (used at the start of a new request). Clears all accumulated tool calls and resets all state to initial values.