feat(node): extend lease transport surface for M9-T09

[skel84]

Summary

• switch the node API and wire codec to the approved lease-centric surface
• expose flattened committed fields, current_lease_id, and ordered member_resource_ids
• keep live and recovered lease reads aligned through new bundle/recovery regression coverage

Validation

• cargo test -p allocdb-node api -- --nocapture
• ./scripts/preflight.sh

Closes #86

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Run ID: 5b7c10a1-c930-4659-80cf-e26c4929b0cb

📥 Commits

Reviewing files that changed from the base of the PR and between efaf307 and 50b4969.

📒 Files selected for processing (10)

• crates/allocdb-core/src/state_machine_members.rs
• crates/allocdb-node/src/api.rs
• crates/allocdb-node/src/api_codec.rs
• crates/allocdb-node/src/api_tests.rs
• crates/allocdb-node/src/bin/allocdb-jepsen/events.rs
• crates/allocdb-node/src/bin/allocdb-jepsen/tests.rs
• crates/allocdb-node/src/bin/allocdb-local-cluster.rs
• crates/allocdb-node/src/lib.rs
• crates/allocdb-node/tests/local_cluster_runner.rs
• docs/status.md

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• Create PR with unit tests
• Commit unit tests in branch issue-86-m9-lease-surface

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• Generate coding plan for human review comments

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[skel84]

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