feat: codeowners-analysis action

[erikburt]

This adds a codeowners-review-analysis action which helps PR authors understand the CODEOWNERS review requirements for their changes.

High-level overview

This action does the following:

1. Gets a list of changed files for a PR
2. Gets the CODEOWNERS file from the default branch
3. Gets the "current PR review state" by
   • Using GQL query to get review events in reverse chronological order, to build up the current review state for a PR
4. Figures out which codeowners entries are relevant to this PR via pattern matching of entries, and list of changed files
5. Cross references current review state with relevant codeowners entries to figure out which entries are satisfied
6. Creates full summary for workflow summary, and partial pending-only summary as a PR comment

Testing

I tested here: https://github.com/smartcontractkit/releng-test/pull/138#issuecomment-3286728832 (and locally using scripts/test.sh)

Triggering

I did some preliminary testing via org-wide ruleset here: smartcontractkit/gha-org-workflows#17

Basically you can only operate on top-level pull_request events, not sub events like pr.labeled, or different top-level events issue_comment. So if this is implemented org-wide it won't be seamless to trigger.

Current Flow w/ Org-wide ruleset:

• User adds analyze-reviews label to their PR and pushes a new commit.
• Anytime they want to refresh the review analysis,
  • They need to rerun the workflow (cli command added as part of the pr comment) OR
  • Push an empty commit (to not dismiss current reviews), but this would cause all of CI to retrigger.

This could look better if we added the workflow at the repo level, as we could have it trigger via comments, or labels, but then we need to maintain it to some degree. This is feasible because there's not that many repos where shared ownership makes codeowners hunting difficult.

• We could have a reusable workflow in this repository, and then individual workflows reference the reusable one (makes it a bit easier to maintain). This would allow us to setup more usable triggers.

Notes

Include minimal unit tests - will follow up w/ these in another PR.

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DX-1787

[Copilot]

Pull Request Overview

This PR introduces a new codeowners-review-analysis action that helps PR authors understand the CODEOWNERS review requirements for their changes by analyzing changed files against patterns and current review status.

• Adds a complete GitHub Action that parses CODEOWNERS files and matches them against PR changed files
• Implements CODEOWNERS pattern matching logic translated from the hmarr/codeowners Go library
• Provides both workflow summary and optional PR comment outputs showing review status

Reviewed Changes

Copilot reviewed 22 out of 26 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
actions/codeowners-review-analysis/action.yml	Action definition with post-comment input parameter
actions/codeowners-review-analysis/src/run.ts	Main orchestration logic that coordinates file analysis and review status
actions/codeowners-review-analysis/src/codeowners-pattern.ts	CODEOWNERS pattern matching implementation translated from Go
actions/codeowners-review-analysis/src/github-gql.ts	GraphQL queries to fetch PR review status and decisions
actions/codeowners-review-analysis/src/strings.ts	Markdown formatting functions for summary and PR comments
actions/codeowners-review-analysis/src/review-status.ts	Review state management and precedence logic
actions/codeowners-review-analysis/src/github.ts	REST API interactions for files, comments, and repository data
actions/codeowners-review-analysis/src/codeowners.ts	CODEOWNERS file parsing and file-to-pattern matching
actions/codeowners-review-analysis/src/run-inputs.ts	Input parsing and context validation
actions/codeowners-review-analysis/src/index.ts	Entry point that calls the main run function

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (2)

actions/codeowners-review-analysis/src/run-inputs.ts:1

• Typo in 'currrent' should be 'current'.

import * as core from "@actions/core";

actions/codeowners-review-analysis/src/run.ts:1

• Typo in 'currrent' should be 'current'.

import * as github from "@actions/github";

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[chainchad]

Suggested change

	using: "node20"
	using: node24

[erikburt]

I have not tested anything w/ node24 yet. Will leave this as node20 for now, and maybe we can update most of our actions to node24 in one big swoop.