chore(release): prepare peat-node 0.4.22

[kitplummer]

Summary

• bump peat-node to 0.4.22
• release the canonical peat-mesh DocumentStore sidecar path from fix(sidecar): use canonical mesh document store #231
• release deterministic mDNS dial initiation so reciprocal discovery cannot replace the initial document-sweep channel

Verification

• cargo check
• cargo fmt --check
• cargo clippy --workspace --all-targets -- -D warnings
• cargo test --workspace — 526 passed, 18 ignored
• cargo build
• fix(sidecar): use canonical mesh document store #231 passed all 16 PR checks, including cross-cluster sync, attachment delivery, NATS, quickstart, peat-cli e2e, package install/upgrade, macOS, Windows, CodeQL, and QA
• physical Samsung SM-X210 Android 16 ↔ ARM64 Linux acceptance passed direct mDNS discovery, authenticated peer count 1, and bidirectional Automerge convergence

Release follow-up to #231 and defenseunicorns/peat#1004.