/gh-pr-review — Code Review

Automated code review for local branches, PRs, commits, and files. Detects the review target from arguments, then picks the review engine from diff size and runtime capability. Small diffs use single-agent review (references/local-review.md). Large diffs use the multi-agent reviewer–verifier flow (references/teams-review.md) only when independent subagents are available; otherwise they fall back to single-agent review with that limitation disclosed. PR targets add worktree setup and GitHub submission (references/pr-review.md) around the same engine-selection contract.

Cherry Studio-specific review rules live in references/cherry-review-guidance.md. Target review flows must load that file for code, mixed, architecture-doc, and project-skill reviews so reviewers can apply DataApi, service-boundary, renderer hook, React, UI, and type-contract checks without relying on memory. That reference also defines which internal docs, internal skills, external skills, and official websites to consult for each changed area; load only the relevant subset.

All user-facing text matches the user's language.

Interaction and interruption contract

Apart from the declared categories below, normal review is prompt-free: never ask for mode selection, fix confirmation, finding selection, or submission preview. A leaf flow may request input only when it explicitly declares one of these categories:

• Product decision — in an interactive session, the Product Demand gate may ask the current user for a decision the review cannot derive. In an automated session, record the impact and open decision without deciding for the user.
• Safety or environment blocker — continuing would require destructive action, new authority, or missing external configuration. Declared examples are a dirty/mismatched review worktree, a missing canonical remote, cleanup of unexplained changes, removal of a failed fix patch, and a pending review draft holding comments this run did not confirm. In an interactive session, preserve state and ask only for the decision needed to proceed.
• Explicit maintenance mode — diag and separately requested checklist maintenance are interactive selection flows outside normal review. They may ask for the declared edit selection or persistent checkout/branch target.

An automated session never waits for user input. At a product decision it continues record-only as specified below. At a safety/environment blocker it preserves state, stops the affected flow safely, and reports the exact blocker and required decision. In an explicit maintenance mode it reports candidates or missing destination information, applies no selection-dependent edits, and stops safely. No leaf flow may introduce another prompt category.

Review Stages

Every review runs these stages in order. A later stage reviews only what survived the earlier ones, so a stage never re-litigates an earlier verdict.

This table is the single source of truth for stage scope and references; a leaf flow may not widen, narrow, or re-reference a stage.

#	Stage	Applies to	Reference
1	Product Demand (gate)	any change whose semantics affect the product	below
2	Consumer	any change that adds or expands shared surface	references/consumer-review.md
3	Architecture-First	code, mixed, Cherry architecture docs, project skills	references/cherry-review-guidance.md
4	Implementation	code, mixed	references/code-checklist.md (A/B)
4	Implementation	docs	references/doc-checklist.md (A/B)
5	Style / conventions	code, mixed	references/code-checklist.md (C)
5	Style / conventions	docs	references/doc-checklist.md (C)

Stage applicability follows the changed content, not the commit label: a documentation-only diff still runs stages 3–5 when it changes Cherry architecture docs or project skills, and a code diff that also edits docs runs both reference sets for stages 4–5.

Stage 1: Product Demand gate

First inspect the semantics actually expressed or constrained by the change, then decide whether it affects product semantics, user-visible behavior, or product direction. Change labels are not sufficient evidence: internal refactors and non-user-facing fixes often have no product impact, while user-facing fixes, docs, tests, or tooling can record, lock, or alter product behavior.

When there is product impact, determine whether the direction is already established in the current review context. Treat it as established only when the current user explicitly decided it or an authoritative project artifact explicitly records the accepted behavior and its approval by the responsible project authority, such as a specification, an ADR, or an issue containing a maintainer decision that settles the expected behavior. Do not infer acceptance from issue state, labels, milestone, assignment, or a link from the PR. A change label, PR body, implementation, or test demonstrates author intent or current behavior but does not establish product approval on its own.

Classify the gate into exactly one state:

• No product impact: skip this stage entirely in both interactive and automated runs; say nothing about the skipped gate.
• Established direction: compare the change with the recorded decision. If it aligns, continue without asking for another product decision. If it conflicts, report the product-direction mismatch and stop the whole review immediately — do not run Consumer, Architecture, Implementation, or Style stages, and do not report code findings. Applying an existing decision is not making a new one.
• Open product decision:
  • Interactive session (default): summarize the change's effect on product functionality and semantics, and ask the current user for the unresolved product decision. Do not infer automation from PR authorship, review ownership, or whether the user authored the change. If the user rejects the direction, stop the whole review as above; if the user approves it, continue with the remaining stages.
  • Automated session (explicit only): use this mode only when the invocation prompt or workflow context explicitly identifies a headless, CI, batch, or other automated run. Make no product decision on the user's behalf. Run the remaining stages, and in the final report summarize the product impact, the direction the change takes, and the points needing human confirmation. Never phrase this as product approval having been obtained.

Authority model

A review request authorizes analysis and reporting only. The review target, review depth, and reviewer–verifier confidence never grant execution authority; authority is granted explicitly at invocation time, and execution is prompt-free only after it has been granted:

• Report-only (default): every review, any target — findings are reported with fix guidance. No working-tree edits, no GitHub writes.
• Fix (explicit): granted only by the invocation — fix in $ARGUMENTS or equivalent explicit user wording ("review and fix …"). Local targets only. What each risk level then permits is owned by references/judgment-matrix.md § Handling by Risk Level; this section grants the authority and never restates the mapping. Applying fixes makes the session a coding task, so it must end with the validation selected per § Validation after applied fixes below.
• Submit (explicit): granted only by the invocation — submit in $ARGUMENTS or equivalent explicit user wording. PR flows then submit all confirmed findings without per-comment prompts. Approving or merging always requires its own explicit request.

Validation after applied fixes

Never run local lint, test, or format during a review that edited nothing. When fixes were applied, select the validation matching the changed surface, following AGENTS.md § Operational Rules ("Check what you changed, not the whole repo"), and report the results:

• Docs/markdown-only fixes — including this skill's own files — run pnpm docs:check.
• Code fixes run pnpm lint (which already ends with pnpm format, so never invoke format again) plus the tests covering the change: a per-project wrapper such as pnpm test:main <file> or pnpm exec vitest run <file>. Never pnpm test <path> — that script chains several vitest invocations and the path reaches only the last one.
• Reserve the full pnpm test for a broad change whose affected tests cannot be named, and use pnpm test:lint when the CI-equivalent lint gate matters (pnpm lint tolerates oxlint warnings that CI denies).

Route

First strip authority modifiers from $ARGUMENTS (equivalent explicit user wording in the conversation counts the same; both default to false). Call the remainder REVIEW_TARGET — every rule below, and every leaf flow, reads REVIEW_TARGET, never the raw $ARGUMENTS:

• fix → AUTHORIZED_FIX = true (meaningful for local targets)
• submit → AUTHORIZED_SUBMIT = true (meaningful for PR targets)

Before choosing a review engine, inspect the runtime's exposed coordination capabilities. Set HAS_SUBAGENTS = true only when it can launch an independent reviewer and a fresh independent verifier. Parallel execution is not required; sequential subagents still satisfy the isolation contract.

Rules

Match the first applicable rule top-to-bottom:

1. REVIEW_TARGET is diag → references/diagnosis.md.
2. REVIEW_TARGET is checklist, or the user explicitly asks to adopt the proposed checklist candidates → references/checklist-evolution.md, entering at its Step 2. Maintenance runs only in the session that produced the candidates; it reviews nothing.
3. REVIEW_TARGET is a PR number or URL containing /pull/ → references/pr-review.md (pass AUTHORIZED_SUBMIT and HAS_SUBAGENTS; the wrapper collects the exact PR scope before selecting the engine).
4. Everything else: derive the scope and SMALL_SCOPE per § Scope derivation below, then select the engine.
   • SMALL_SCOPE = true → references/local-review.md.
   • SMALL_SCOPE = false with HAS_SUBAGENTS = true → references/teams-review.md.
   • SMALL_SCOPE = false with HAS_SUBAGENTS = false → references/local-review.md; pass LIMITED_SINGLE_AGENT = true so the report explicitly states that a large diff received single-agent review without independent adversarial verification.
   • Pass AUTHORIZED_FIX (commit and range targets are immutable history — always report-only regardless of the flag).

Each → means: Read the target file and follow it as the sole remaining instruction for how to obtain diffs, apply fixes, and submit results. Do NOT review from memory or habit. The skill-wide sections — § Review Stages, § Authority model, § Validation after applied fixes, and § Scope derivation — stay binding; the leaf flows reference them by name.

Never ask the user anything to route. Pass REVIEW_TARGET, the resolved scope, SMALL_SCOPE, and the authority flags to the target file.

Scope derivation

Reached only from Rule 4 above; diag and checklist targets never enter this subsection. It is the sole owner of how a review scope and its size are derived — leaf flows reference it and never restate it.

Resolve REVIEW_TARGET into the review scope:

REVIEW_TARGET	Scope
empty, uncommitted changes exist	uncommitted changes only — git diff HEAD (staged + unstaged tracked files), plus untracked (??) files from git status --porcelain, reviewed as new code
empty, clean tree	branch diff against the base: git merge-base origin/{main|master} HEAD, then git diff <merge-base-sha>, plus untracked files
commit hash	validate with git rev-parse --verify, then git show
commit range (A..B / A...B)	validate both endpoints, then git diff A~1..B
file/directory paths	verify each path exists, then the full contents of the resolved files
PR number or /pull/ URL	the PR's merge-base diff, collected by references/pr-review.md

The resolved review scope, not a diff, decides whether there is work: for a path target it is the set of files resolved from the given paths; for every other target it is the diff. A clean tree does not make a path target empty. If the resolved scope is empty, show the usage examples below and exit.

Then measure what the leaf flow will actually read — a diff for diff-shaped targets, full file text for path targets:

• Diff-shaped targets (uncommitted changes, branch/merge-base diff, a commit, a commit range, a PR): CHANGED_LINES is the sum of numeric additions and deletions from git diff --numstat for the complete review scope, and CHANGED_FILES is the number of unique changed paths in it.
• File/directory path targets: the leaf flow reviews full contents, so measure full contents — CHANGED_FILES is the number of files resolved from the given paths (directories expand recursively, excluding ignored paths), and CHANGED_LINES is the total line count of those files. A clean tree never makes a path target small by default.
• Untracked text files in a diff-shaped scope count as one file each with their full line count as additions.
• Generated files count normally in both totals; do not exclude them because they are generated.
• Any binary file — a binary diff (-/- in --numstat), an untracked binary, or a binary resolved from a path target — counts as a file and makes the scope non-small, because its line size is unknown.

Set SMALL_SCOPE = true only when CHANGED_LINES <= 1000, CHANGED_FILES <= 20, and the scope contains no binary file. Both numeric conditions must hold. SMALL_SCOPE is the name every flow uses for this result.

Usage examples

Print this list when the resolved scope is empty:

/gh-pr-review                      review uncommitted changes, else the branch diff
/gh-pr-review a1b2c3d              review a commit
/gh-pr-review a1b2c3d..e4f5g6h     review a commit range
/gh-pr-review src/foo.ts           review files or directories
/gh-pr-review 123                  review a PR (also accepts a /pull/ URL)
/gh-pr-review <target> fix         also apply low-risk fixes (local targets)
/gh-pr-review <pr> submit          also publish the review to GitHub
/gh-pr-review checklist            adopt this session's proposed checklist items
/gh-pr-review diag                 diagnose gaps in this skill