tlock: add cross-implementation test vectors for sealBid

[karagozemin]

Summary

Add golden test vectors for sealBid / auditor blob encoding in packages/tlock so seals produced by the SDK can be verified against a known-good fixture.

Motivation

tlock sealing is security-critical. Deterministic vectors protect against silent regressions in encoding, nonce handling, or the H = sha256(value‖nonce) binding.

Acceptance criteria

• Committed fixture with input (value, nonce, round, identity) and expected sealed output digest.
• Test that re-seals and compares against the fixture.
• Test asserting a modified nonce changes the binding hash.
• Documented how to regenerate vectors.

[Sufiyan-MSA]

Hi, I’d be happy to work on this. Pls assign.

[afeezorobsco-cyber]

i would like to work on this issue