fix: add missing log::debug import

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/meta_plugin.rs

@@ -2,6 +2,7 @@ use anyhow::Result;
 use std::io;
 use std::io::Write;
 use rusqlite::Connection;
+use log::debug;
 
 pub mod program;
 pub mod digest;