Etern1tyDark/PQC-Signer — reverse-engineered prompt

Build me a small full stack app called Q SealNet for post quantum digital signing with ML DSA. I want a simple browser dashboard and a command line tool that both talk to the same backend API.

Users should be able to create signing keys with a chosen ML DSA variant, either 44, 65, or 87, and optionally protect the private key with a password. They should be able to import and export keys, list saved keys, change a key password, and prevent accidental duplicate key creation unless overwrite is explicitly allowed.

The app should let people upload a file, sign it, and get back a detached JSON manifest, then verify a file against that manifest later. It should also support patching a binary by appending an embedded signature block, then verifying a patched binary. Please persist keys and signature records, support older storage migration, add tests for the main flows, and make the UI feel like one clean dashboard. If anything is unclear, look up current docs online and fill in the gaps.