ditto v0.1.1

trust upgrade for ditto.

new:

• python ditto.py --dry-run previews what ditto will read/write without creating ditto-out/
• synthetic tests for dry-run and redacted corpus output
• GitHub Actions test workflow + README badge

why it matters:

• users can audit counts and output paths before writing a private corpus
• CI now verifies the extractor behavior on every push