Tob audit fix

[jonathanMweiss]

• DKG generates configs with new partyID: pid = hash of public key pem.
  • updated the testing configs accordingly.
• DKG fatal error instead of a log for server setup issues.
• removed warning spam in tss server logs.

[Copilot]

Pull Request Overview

This PR implements security audit fixes for the TSS (Threshold Signature Scheme) DKG (Distributed Key Generation) system. The changes include switching from PEM public keys to SHA-512 hashes as party IDs for improved security and updating error handling to use fatal logging instead of warnings.

• Changes party ID generation from using PEM public keys directly to SHA-512 hashes of the PEM keys
• Updates DKG server error handling to use fatal logging for critical failures
• Reduces log spam by converting warning messages to debug level or removing redundant checks

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
node/pkg/tss/internal/cmd/dkg/server.go	Updates error handling to use Fatal instead of Error logging and improves DKG session logging
node/pkg/tss/internal/cmd/common.go	Implements SHA-512 hashing for party ID generation and updates identity sorting logic
node/pkg/tss/implementation_test.go	Updates test cases to use KeyPEM instead of party ID for leader identity references
node/pkg/tss/identity.go	Adds new mapping for party ID to index lookups and error handling
node/pkg/tss/comm/server.go	Reduces log spam by converting warning to debug level and removing redundant context checks
node/pkg/tss/cnfgs.go	Adds party ID to index mapping initialization
Guardian configuration files	Updates all test configuration files with new SHA-512 based party IDs and TSS secrets

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