feat: expose nym-api public keys + proof of possession

[jstuczyn]

small PR to unconditionally expose an endpoint with nym-api public (ed25519) key without requiring it to be a signer. it also introduces an endpoint for providing proof of possession of the key

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Project	Deployment	Actions	Updated (UTC)
nym-explorer-v2	Ready	Preview, Comment	Jul 9, 2026 12:49pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs-nextra	Ignored	Preview	Jul 9, 2026 12:49pm
nym-node-status	Ignored	Preview	Jul 9, 2026 12:49pm

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