Add progress display for S3 upload and transcription polling

- Add real-time progress bar with percentage for S3 upload (file size/MB)
- Replace repetitive polling output with single-line refreshing status
- Show elapsed time and poll count during transcription polling
- Add .claude/ to .gitignore

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -37,4 +37,6 @@ output/
 Archive/
 
 # Tools
-tools/
+tools/
+
+.claude/