multi-repo-release

# Agent Landing Zone multi-repository release Read `.github/copilot-instructions.md` completely before changing a release artifact. Its branching, versioning, changelog, and release-note requirements are authoritative. 1. Determine the intended semantic version and create the release branch from `develop` using `release/x.y.z`. 2. Update `manifest.json` `tag` to `vX.Y.Z` and verify it matches the release branch version, changelog heading, Git tag, and GitHub Release title. 3. Read every runtime component tag from `manifest.json` `components[]` and the infrastructure provenance from `infra.source` (`repo`, `tag`, `commit`); never copy a previous version table. Align the bundled `app-definition.json` source commits and the exact component-pin review in `infra/tests/contracts/fixtures/incorporated-foundation-normalization.json` in the same change. Run the release gate against the real loaded application definition, not just the manifest values. 4. `infra/` is repository-owned source (no submodule). Keep `manifest.json` `infra.source` equal to the AI Landing Zone release the in-repository `infra/` was incorporated from, and validate the exact `infra/` tree being released. 5. Confirm that the exact pinned combination was validated and record the relevant commands and Azure deployment mode without private environment or resource group names. 6. Replace `[Unreleased]` with `## [vX.Y.Z] - YYYY-MM-DD` for the release. 7. Keep `CHANGELOG.md` and GitHub Release notes consistent, including the full required component version table. 8. Use exactly `vX.Y.Z` for both the tag and GitHub Release title. 9. Target the release pull request to `main`. 10. Re-fetch published release notes and verify headings, lists, tables, and the absence of private `gptrag-*` and `rg-gptrag-*` validation names. Do not publish a tag, release, package, image, or production deployment without explicit human approval. Report incompatible pins, missing validation, or documentation drift as blockers rather than filling gaps by assumption.