Stellar Agent v0.4.3

0.4.3

• Added npm-facing README files for every public @stellar-agent/* package and package-specific npm homepage links.
• Added root and package README guidance for installing @stellar-agent/cli, choosing scoped packages, and previewing npm README content before release.
• Added release checks that require package READMEs in source and verify package/README.md is present in every packed npm tarball.
• Added stellar-agent --version --json for scripts that need machine-readable CLI version output.
• Updated release notes and npm package descriptions for README/package-page changes.

Artifacts

• npm package tarballs for every publishable @stellar-agent/* workspace package.
• Codex plugin artifact: stellar-agent-codex-plugin-v0.4.3.tgz.
• release-manifest.json with artifact SHA-256 checksums and source commit.

Verification

• pnpm release:preflight
• Fresh install from generated npm tarballs
• Bundled Codex plugin validation from the generated plugin tarball

Boundaries

• npm publication is queued through the separate protected Publish npm workflow and requires npm-production approval.
• Testnet remains the default.
• Mainnet local auto-signing and Mainnet secret-key storage remain blocked.