S3 + CloudFront Directory Indexer — 2026-06-30_v004

Browser-only refinement based on desktop screenshot feedback.

Changes from v003:
- near-zero left/right page padding
- fixed table layout so Last modified and Size stay visible on desktop
- filename column gets all remaining width
- long filenames ellipsize on desktop instead of pushing other columns off-screen
- full filename available via standard browser tooltip/title on hover
- mobile still wraps filenames fully
- still Apache-first and not app-like

Use:
- Upload s3-cloudfront-indexer-simple-2026-06-30_v004-lambda-edge-directory-browser-upload.zip to the Lambda@Edge directory browser.
- Deploy $LATEST.
- Publish a new numbered version.
- Attach that numbered version ARN to CloudFront Default (*) Origin request.

No updater/IAM changes are required.