Rewrite import file to use BatchImporter.

Now works for nested archives, fat macho and directories.

Author: cyberkaida

CLAUDE.md

@@ -146,4 +146,5 @@ The server uses streamable transport (SSE) on port 8080 by default. Configuratio
 - Fork every integration test to prevent configuration conflicts
 - **Memory Management**: Always dispose DecompInterface instances to prevent leaks
 - **Read-Before-Modify**: Decompiler tools enforce function reading before modification
-- **Error Messages**: Provide specific, actionable error messages with suggestions
+- **Error Messages**: Provide specific, actionable error messages with suggestions
+- When reading the test report, use the read tool or grep, do not use `open`.