Phase 1: establish the Quantum network adapter

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Motivation

Solution

PR Checklist

• Added Tests
• Added Documentation
• Breaking changes

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• quantum phase 4: lock parity with tests, fixtures, docs, and CI #5
• quantum phase 3: add KeyVault lifecycle UX and read-path compatibility — introduces cast quantum subcommand group (bootstrap / add-key / remove-key / update-key-auth) that reuses the shared CastTxBuilder + ML-DSA signing pipeline, routes through `Quan #4
• quantum phase 2: finalize manual verification and auto-apply lifecycle gas floor — adds fork-side key_id == 0 invariant on bootstrap requests, moves KeyVault lifecycle-selector rejection into cast send pre-build (matching both Solidity and raw-hex sel #3
• Phase 1: establish the Quantum network adapter #2 👈 (View in Graphite)
• Add Phase 0 Quantum cast send seam #1
• master

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