Update README.md

Author: johnzfitch

README.md

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 # Defense of the Artifacts (dota)
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+![Dota post quantum secure local vault](dotav7-paper/IMG_6689_Afterlight.jpeg)
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 Post-quantum secure secrets manager with `v7` <abbr title="Triple-Committed Hybrid Key Encapsulation Mechanism">TC-HKEM</abbr> vaults (<abbr title="Module Lattice-based Key Encapsulation Mechanism, 768-bit security level, NIST FIPS 203">ML-KEM-768</abbr> + X25519 with ciphertext binding and passphrase commitment), plus a terminal UI.
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 **Defense-in-depth cryptography**: `v7` vaults protect secrets with both classical security (X25519) and post-quantum security (ML-KEM-768), combined via the TC-HKEM (Triple-Committed Hybrid KEM) construction. Security holds if *either* algorithm is secure. Legacy `v1`&ndash;`v6` vaults are migrated in place to `v7` on unlock.
 
 ## Quickstart