feat(cursor-review): reuse check-pr-size classifier + discount comments in the size gate

.github/cursor-review/README.md

@@ -179,9 +179,12 @@ descriptions live in the [workflow header](../workflows/cursor-review.yml).
 | Input | Default | What it does |
 |---|---|---|
 | `judge_model` | `claude-opus-5-thinking-max` | Model that consolidates panel findings. |
-| `diff_size_cap` | `5000` | Max changed lines (after excludes); larger PRs are skipped. |
+| `diff_size_cap` | `5000` | Max counted changed lines (after generated-file exclusion and comment discounting); larger PRs are skipped. |
+| `ignore_comments` | `true` | Discount blank/comment-only lines from the size count (count-only; the panel still sees them). |
 | `review_label` | `cursor-review` | Label whose addition triggers the review. |
-| `diff_excludes` | lockfiles, `node_modules`, `dist`, `vendor`, minified/generated files | Pathspecs excluded from both the size count and the reviewed diff. |
+| `extra_generated_globs` | `node_modules`, `dist`, `vendor`, minified/`.generated.` files | Extra globs the shared `check-pr-size` classifier treats as generated — excluded from BOTH the size count and the reviewed diff. |
+| `extra_lockfiles` | `''` | Extra lockfile base names for the classifier, on top of its built-ins. |
+| `diff_excludes` | `''` | Pathspecs excluded from the reviewed diff ONLY (not the size count) — back-compat escape hatch; prefer `extra_generated_globs`. |
 | `workflows_ref` | `main` | Ref this directory's prompts/scripts are loaded from. Pin to your `uses:` SHA. |
 | `bot_app_id` | `''` | Optional GitHub App ID; when set (with `BOT_APP_PRIVATE_KEY`), the review posts under that App's identity instead of `github-actions[bot]`. |
 | `run_without_label` | `false` | Run on plain PR events instead of requiring the trigger label. Also requires widening the caller's `types:` — see [the setup guide](../../docs/callers/cursor-review.md). |

README.md

@@ -15,7 +15,7 @@ complete, copy-pasteable caller.
 | Workflow | Purpose | Setup |
 |---|---|---|
 | [`detect-unreviewed-merge.yml`](.github/workflows/detect-unreviewed-merge.yml) | SOC 2 compliance — detects PRs merged without prior approval and opens a tracking issue in [`Comfy-Org/unreviewed-merges`](https://github.com/Comfy-Org/unreviewed-merges). | [detect-unreviewed-merge.md](docs/callers/detect-unreviewed-merge.md) |
-| [`cursor-review.yml`](.github/workflows/cursor-review.yml) | Label-triggered multi-model code review. A 4-lab × 2-review-type cursor-agent panel runs adversarial + edge-case passes, a judge model consolidates them into one PR review with per-finding severity badges, and the triggerer gets Slack start/complete DMs. Advisory by default; opt in with `blocking: true` to fail a (required-status-check) gate while findings stay unresolved. Prompts and scripts live in [`.github/cursor-review/`](.github/cursor-review) — the single source of truth, so consumer repos carry only a thin caller. Self-hostable via `runs_on` (JSON, default `ubuntu-latest`) and panel models overridable via `models` (JSON array) for accounts lacking a default provider. Requires `CURSOR_API_KEY` (+ optional `SLACK_BOT_TOKEN`). | [cursor-review.md](docs/callers/cursor-review.md) |
+| [`cursor-review.yml`](.github/workflows/cursor-review.yml) | Label-triggered multi-model code review. A 4-lab × 2-review-type cursor-agent panel runs adversarial + edge-case passes, a judge model consolidates them into one PR review with per-finding severity badges, and the triggerer gets Slack start/complete DMs. Advisory by default; opt in with `blocking: true` to fail a (required-status-check) gate while findings stay unresolved. Prompts and scripts live in [`.github/cursor-review/`](.github/cursor-review) — the single source of truth, so consumer repos carry only a thin caller. Generated code is excluded from BOTH the diff-size gate and the diff sent to the panel via the shared [`check-pr-size`](scripts/check-pr-size) classifier (base-ref `linguist-generated`, base-blob Go generated markers — a PR cannot self-exempt a file from review, lockfiles, plus `extra_generated_globs` / `extra_lockfiles`) — the same detection as `pr-size.yml`, so codegen never blows the review cap or wastes review signal. Blank and comment-only lines are also discounted from the size count by default (`ignore_comments`) so AI comment volume doesn't trip the cap and skip the review — comments still reach the panel, only the count ignores them. Self-hostable via `runs_on` (JSON, default `ubuntu-latest`) and panel models overridable via `models` (JSON array) for accounts lacking a default provider. Requires `CURSOR_API_KEY` (+ optional `SLACK_BOT_TOKEN`). | [cursor-review.md](docs/callers/cursor-review.md) |
 | [`cursor-review-auto-label.yml`](.github/workflows/cursor-review-auto-label.yml) | Companion to `cursor-review.yml`. On PR assignment, applies the review label for an opted-in reviewer (via the CLOUD_CODE_BOT app token, so the label actually triggers the review). The opt-in roster lives in the caller's `vars.CURSOR_REVIEW_OPTED_IN_LOGINS` — no roster is baked into the workflow. Requires `vars.APP_ID` + `CLOUD_CODE_BOT_PRIVATE_KEY`. | [cursor-review-auto-label.md](docs/callers/cursor-review-auto-label.md) |
 | [`assign-reviewers.yml`](.github/workflows/assign-reviewers.yml) | Auto-requests expertise-aware, load-balanced PR reviewers with new-folk randomization. Matches changed paths against a caller-repo `.github/reviewers.yml` (path-glob → reviewers, plus a `default_pool`), drops the author + `vars.REVIEWER_EXCLUDE`, ranks candidates by open review load (steering off anyone at/over `vars.REVIEWER_LOAD_CAP`), and may swap a slot for a `vars.REVIEWER_GROWTH_POOL` member. Requests go through the CLOUD_CODE_BOT app token so they work on fork PRs. Requires `vars.APP_ID` + `CLOUD_CODE_BOT_PRIVATE_KEY`. | [assign-reviewers.md](docs/callers/assign-reviewers.md) |
 | [`assign-prs-to-author.yml`](.github/workflows/assign-prs-to-author.yml) | Housekeeping — assigns every open PR with no assignees to its author (bot-authored PRs skipped by default). Run on a schedule from a thin caller; useful when a team tracks PR ownership via assignees. The calling job needs `pull-requests: write` and `issues: write`. | [assign-prs-to-author.md](docs/callers/assign-prs-to-author.md) |