Function prompt_logs 

pub fn prompt_logs(
    conn: &Connection,
    q: &PromptLogQuery,
) -> Result<Vec<PromptLogRow>>

Execute a prompt-logs query (DW-081): return the raw ai_prompt_logs rows in a time window, newest first. Reads the RAW rows directly — prompt logs are per-request, not rolled up. Optionally filtered by consumer.