Fix authoring repo on bundle products

[lcawl]

Summary

Fixes #4060

Details

products[].repo is now the authoring GitHub repo (same resolution as the bundle filename), not products.yml repository:.

Code

• BundleBuilder stamps the repo argument on every product. It no longer reads the product catalog.
• ChangelogBundlingService fills that argument with --repo / profile / bundle.repo, then GITHUB_REPOSITORY / git origin.
• Catalog lookup (GetProductsByRepositoryName, repository: cloud) is unchanged.

Tests and docs

• Unit tests in BundleBuilderPerProductRepoTests now expect authoring repo (including cloud-serverless + elasticsearch).
• End-to-end: BundleChangelogs_ServerlessProfile_WritesAuthoringRepoNotCatalogRepository uses a catalog with repository: cloud and asserts repo: elasticsearch.
• Docs in cmd-bundle.md, configure-ref.md, changelog.example.yml, and the BundleProfile.Repo comment.

Tests

Related to elastic/elasticsearch#158728, I ran the following command:

docs-builder changelog bundle serverless-release 2026-09-08 "./docs/temp/Elasticsearch serverless Promotion Report.html"

Before this PR, it generated a bundle that contained the following:

products:
- product: cloud-serverless
  target: 2026-09-08
  repo: cloud
  owner: elastic

After this PR, it contains the correct repo name:

products:
- product: cloud-serverless
  target: 2026-09-08
  repo: elasticsearch
  owner: elastic

Generative AI disclosure

1. Did you use a generative AI (GenAI) tool to assist in creating this contribution?

• Yes
• No

2. If you answered "Yes" to the previous question, please specify the tool(s) and model(s) used (e.g., Google Gemini, OpenAI ChatGPT-4, etc.).

Tool(s) and model(s) used: Cursor Grok 4.6

[github-actions]

Docs preview (local build)

Handbook preview: https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/4061/

Sample changed pages:

• docs/cli/changelog/cmd-bundle.md
• docs/data/release-notes/configure-ref.md

[theletterf]

@copilot Investigate and fix the CI failures.

[Copilot]

@copilot Investigate and fix the CI failures.

Fixed in c631a20. The failing ci run was stale test coverage around the new authoring-repo fallback: two bundle tests now expect the resolved repo: value, and the local amend tests now force local sourcing so they stay deterministic in CI.

[Copilot]

🟡 Changes recommended

Repo resolution is applied only when building the bundle products, leaving other repo-dependent logic in the same run still using the unresolved input.Repo, which can cause inconsistent behavior when repo is omitted from CLI/config.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

This PR fixes changelog bundle output so products[].repo reflects the authoring GitHub repository (the checkout/bundle filename convention) rather than the docs catalog products.yml repository: value, preventing incorrect default PR/issue link resolution for bundled products.

Changes:

• Stop resolving per-product repo from the product catalog; instead stamp the authoring repo onto every bundled product.
• Resolve the authoring repo for bundling (via CLI/config/env/git origin) and update unit/e2e tests to validate the new behavior.
• Update CLI/config documentation to clarify what bundle.repo and profile repo mean and how they affect output.

File summaries

File	Description
tests/Elastic.Changelog.Tests/Changelogs/BundleChangelogsTests.cs	Adds an end-to-end-style test asserting bundles write the authoring repo even when the catalog maps the product to a different repository.
tests/Elastic.Changelog.Tests/Bundling/BundleBuilderPerProductRepoTests.cs	Updates unit tests to reflect stamping the authoring repo on all products and the new null behavior when repo can’t be resolved.
src/services/Elastic.Changelog/Bundling/ChangelogBundlingService.cs	Passes a resolved authoring repo into BundleBuilder and removes catalog dependency from the bundle build call.
src/services/Elastic.Changelog/Bundling/BundleBuilder.cs	Removes catalog-based per-product repo resolution and stamps the provided authoring repo on each bundled product.
src/Elastic.Documentation.Configuration/Changelog/BundleConfiguration.cs	Updates BundleProfile.Repo docs/obsolete messaging to reflect new repo derivation behavior.
docs/data/release-notes/configure-ref.md	Clarifies semantics and precedence of bundle.repo and profile repo, and that products[].repo is authored-repo based.
docs/cli/changelog/cmd-bundle.md	Clarifies conventional output filename derivation and repo resolution precedence.
config/changelog.example.yml	Updates example comments to align with new meaning of profile repo.

Review details

• Files reviewed: 9/9 changed files
• Comments generated: 2
• Review effort level: Lite

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