perf: Use io::copy for SkipBytesFilter

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/filter_plugin/skip.rs

@@ -1,5 +1,5 @@
 use super::FilterPlugin;
-use std::io::{Result, Read, Write, BufRead, Seek};
+use std::io::{Result, Read, Write, BufRead};
 use crate::common::PIPESIZE;
 
 pub struct SkipBytesFilter {
@@ -29,15 +29,8 @@ impl FilterPlugin for SkipBytesFilter {
             }
         }
         
-        // Copy the remaining data
-        let mut buffer = vec![0; PIPESIZE];
-        loop {
-            let bytes_read = reader.read(&mut buffer)?;
-            if bytes_read == 0 {
-                break;
-            }
-            writer.write_all(&buffer[..bytes_read])?;
-        }
+        // Copy the remaining data using io::copy for efficiency
+        std::io::copy(reader, writer)?;
         Ok(())
     }
 }