feat: decouple fee payment from sequence number management#23

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marcelosalloum merged 12 commits intomainfrom

Mar 26, 2026

Commits on Mar 26, 2026

feat: add signer pool utilities (roundRobinSelector, resolveSigners)
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feat: rename push-mode credential type from 'signature' to 'hash' per MPP spec
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feat: client sends type='hash', server verifies type='hash' for push mode
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feat: remove feePayerKey from schema and client progress events
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feat: replace feePayer with signers/selectSigner/feeBumpSigner in server charge
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feat: replace closeKey with signers/selectSigner/feeBumpSigner in channel server
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feat: export roundRobinSelector, resolveSigners, and SignerPool from package
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docs: update README for signer pool, fee bump, and type='hash' changes
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docs: update channel-close example for signer parameter rename
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refactor: simplify signer pool to single signer + feeBumpSigner
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address PR comments
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docs: add verification checklist to CLAUDE.md
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