dsh-codex-use v0.2.3

dsh-codex-use v0.2.3

• Fix DSH peer ranges for prerelease runtimes 0.1.0-rc.7 and 0.1.1-rc.2.
• Core App Server Bundle version is 0.2.3; the search bundle remains 0.1.0 and is not part of this release.
• Codex CLI compatibility is fail-closed at 0.144.1; other versions report protocol-mismatch.
• Host Surface was verified in isolated temporary profiles with DSH 0.1.0-rc.7 and 0.1.1-rc.2.
• Fast Mode is schema-gated and depends on upstream service-tier support. No real model turn was run.
• Quota fixture checks pass; live quota remains unverified without a Codex CLI 0.144.1 binary.

This project is distributed through GitHub source installs and GitHub Releases.
It is not published to npm.