chore: claude-review - add stacked PR context

[kristina-solovyova]

When review runs vs. skips

Job 1: optimize_ci — stack position check

Runs first on every PR event. Decides should_review:

Condition	Result
PR has claude-review label	run (forced override)
No open child PR targeting this branch	run (top of stack)
Another open PR is stacked on top of this one	skip (intermediate PR)

Goal: avoid running Claude review on every PR in a stack — only the top PR gets reviewed.

Job 2: claude-review — actual review

Only runs when:

1. should_review == true (from above)
2. PR is not from a fork
3. Author is OWNER, MEMBER, or COLLABORATOR

Additionally guarded by the targets_main check inside the job:

• If the PR (directly or via its stack chain) eventually targets main → run review
• Otherwise → print skip notice and stop

Build PR stack context (step)

When a PR does not directly target main, this step walks the stack upward to find all parent PRs.

Algorithm:

1. Start at base_ref of the current PR
2. For each base branch, query gh pr list --head <branch> to find the PR whose head is that branch
3. Collect PR #N: <title> for each parent
4. Walk up until reaching main or hitting a missing PR or the 20-iteration safety limit
5. Set targets_main=true if the walk reaches main

Output:

• targets_main — gates whether the review step runs at all
• stack_section — a formatted markdown block injected into the Claude prompt

How Claude uses stack context:

The stack_section is appended to the review prompt with instructions to:

1. Compare each parent PR title to the current PR topic
2. For related parent PRs, fetch their diff via gh pr diff <number>
3. Use parent diffs as background context (not re-review targets)
4. Skip unrelated parent PRs

This gives Claude enough context to understand what code is new in the current PR vs. inherited from parent stack PRs.

[kristina-solovyova]

• fix: do not delete pods as part of hugepages propagation, always propagate user-set values #2313
• fix: support skipVirtualDrivesRemoval override from api #2288
• fix: make podTerminationDeactivationTimeout configurable in helm #2272
• fix: add hugepages update propagation with per-role config (OP-247) #2241
• fix: extract hugepage calculations and simplify cluster template structure #2218
• fix: support compute hugepages recalculation on existing full-drive wekaclusters #2204
• fix: calculate compute hugepages based on drives capacity in full drive mode #2192
• chore: claude-review - add stacked PR context #2325 👈 (View in Graphite)
• main

---

How to use the Graphite Merge Queue

Add the label main-merge-queue to this PR to add it to the merge queue.

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has required the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[graphite-app]

Graphite Automations

"Add anton/matt/sergey/kristina as reviwers on operator PRs" took an action on this PR • (03/05/26)

2 reviewers were added to this PR based on Anton Bykov's automation.

[Copilot]

Pull request overview

Updates the Claude Code Review GitHub Actions workflow to include stacked-PR ancestry context in the prompt so the reviewer can optionally pull parent diffs for background.

Changes:

• Fetch full git history in checkout (fetch-depth: 0).
• Add a step that uses gh pr list + jq to build a “Stacked PR Context” section and exports it via GITHUB_ENV.
• Extend the Claude prompt and allowed tools to support stacked-context lookup and editing an empty PR description.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 4 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 4 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 1 comment.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[graphite-app]

Merge activity

• Mar 5, 12:30 PM UTC: kristina-solovyova added this pull request to the Graphite merge queue.
• Mar 5, 12:31 PM UTC: CI is running for this pull request on a draft pull request (#2326) due to your merge queue CI optimization settings.
• Mar 5, 12:32 PM UTC: Merged by the Graphite merge queue via draft PR: #2326.