feat(cluster-tool): add cluster readiness flow and CLI

[joshglogau]

Summary

Adds reusable cluster-readiness PhaseGroups, a fresh-cluster FlowScenario, and a connected read-only CLI over explicit endpoints. Both entrypoints use the platform's existing PhaseGroup → Phase → Step → Report engine.

This is the clean replacement for #53; that PR remains unchanged as historical context.

Behavior

• Pins endpoint identity and checks Wire, Ethereum, and Solana liveness.
• Verifies swap protocol configuration, active reserves, token bindings, assets, underwriter capacity, pending-request health, and client-side route quotes.
• Uses bounded table reads that fail explicitly rather than accepting partial state.
• Keeps normal flows fail-fast; readiness alone opts into diagnostic collection so independent read-only checks remain visible while the command still exits nonzero.

The proof boundary is intentionally read-only. It does not claim signer, custody, transaction, settlement, Hub, or artifact-publication readiness.

Run

node scripts/run-flow.mjs flow-cluster-readiness \
  --cluster-path /tmp/wire-flow-cluster-readiness \
  --wire-build-path /path/to/wire-sysio/build \
  --ethereum-path /path/to/wire-ethereum \
  --solana-path /path/to/wire-solana

node scripts/flow-heartbeat-monitor.mjs \
  --cluster-path /tmp/wire-flow-cluster-readiness

The connected command accepts explicit Wire, Ethereum, and Solana RPC identity flags through wire-cluster-tool readiness.

Validation

• GitHub Build and test and Jest results: green.
• Focused cleanup verification: 12 suites / 52 tests, lint, TypeScript build, and git diff --check.
• Earlier connected acceptance: 19/19 Steps and 28/28 route quote preflights passed. The final structural cleanup was not rerun against that live cluster.

Review focus

• Readiness-only diagnostic collection versus the unchanged fail-fast default.
• Required Wire chain identity and optional Ethereum/Solana identity pins.
• The explicit read-only proof boundary and bounded table-scan policy.