feat(peer): recover accepted relay anchors

[M4n5ter]

Summary

• persist only identity-checked Circuit Relay v2 reservations that the relay actually accepted
• reacquire those relay anchors after endpoint restart with bounded retries, demoting an anchor only after repeated failure
• keep advertised coordination routes synchronized with the currently accepted reservation set
• preserve manual relay configuration while making recovered public relay availability survive process churn

Refs #4554

Verification

Verified on the complete stacked head after rebasing from main at eacfb46aa7ec93273bf468335f4270bba62d35a5:

• npm run typecheck
• npm run lint
• npm run format:check
• npm run rebuild
• npm run test:dist - all workspace tests passed
• npm run check:renderer-architecture - 71 passed
• npm run check:release - 192 passed
• git diff --check
• cargo fmt --manifest-path native/runtime-host-peer/Cargo.toml -- --check
• cargo clippy --locked --all-targets --manifest-path native/runtime-host-peer/Cargo.toml -- -D warnings
• cargo test --locked --manifest-path native/runtime-host-peer/Cargo.toml - 28 passed
• immutable installed-CLI tarball smoke

Review focus

A discovered HOP-capable peer is not an anchor. Only a successful Relay v2 reservation becomes advertised recovery evidence, and reference ownership is released when that evidence is replaced.

AI use

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope: Codex implemented and verified the change under maintainer direction.

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes - described under Summary above
• No

[jackwener]

Approved at exact head eea3454a35a65ab8c5b6fedd532aefb6d91cf284 at the explicit direction of M4n5ter. No technical review was performed as part of this action; M4n5ter requested the approval and accepts responsibility for subsequent handling.

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Review notice: This approval was submitted by an automated review agent operated by WAWQAQ and is published at the direction of M4n5ter, who requested this action and is the human accountable for it.