chore(release): prepare dhttp v0.6.1

[metah3m]

Summary\n\n- share network-owned mDNS resources across endpoint identities\n- forward the latest DNS lookup contract\n- prepare Rust, PyPI, and npm packages as stable releases\n\n## Release\n\n- Planned tag: v0.6.1\n- Dependency gate: dquic 0.7.1, h3x 0.6.1, and dyns 0.7.1\n- Publish dhttp and dhttp-api 0.6.1, dhttp-access 0.4.1, dhttpy 0.6.1, and @genmeta/dhttp 0.6.1\n- Rerun CI after the stable dependency chain is published\n\n## Verification\n\n- JSON package manifests parse successfully.\n- Local tests were not rerun per release instruction.\n\n## Release notes\n\nReuse one mDNS driver and resolver across endpoint identities, and expose the same lookup semantics through Rust, Python, and Node.js packages.

[codecov]

Codecov Report

❌ Patch coverage is 95.60440% with 12 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
dhttp/src/endpoint.rs	83.67%	8 Missing ⚠️
dhttp/src/ddns.rs	98.05%	4 Missing ⚠️

Files with missing lines	Coverage Δ
dhttp/src/network.rs	94.40% <100.00%> (+0.38%)	⬆️
dhttp/src/ddns.rs	93.37% <98.05%> (+1.37%)	⬆️
dhttp/src/endpoint.rs	84.04% <83.67%> (-0.83%)	⬇️

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