chore: cleanup temp files and fix minor compiler issues

- Remove 172 .bak backup files from codebase
- Delete temp .wat, .log, .txt files from root
- Update .gitignore to prevent temp files
- Fix ImportDesc pattern matching for no_std compatibility
- Add missing Vec and Box imports in decoder modules

Author: avrabe

.gitignore

@@ -47,3 +47,10 @@ docs_output/
 .cursor/
 .cursorignore
 *.rlib
+
+# Temporary test files
+*.log
+/test_*.wat
+/simple.wat
+/minimal.wat
+/file_ops_component.wat