revert: back to Opus 4.8 and single-pass review (#108, #110)

[MounirDhahri]

Summary

• Reverts chore: use Opus 5 for reviews #108 ("chore: use Opus 5 for reviews") — model default goes back to claude-opus-4-8.
• Reverts feat: two-pass Claude review (find, then filter) to cut false positives - behind feature flag #110 ("feat: two-pass Claude review...") — removes the two-pass find/filter review flow and its compare-two-pass-review flag, restoring single-pass review.

Test plan

• Confirm claude-review.yml default model is claude-opus-4-8
• Confirm two-pass review code, tests, and template flag are gone
• Trigger a Claude review on a test PR and confirm single-pass behavior

Assisted-by: Claude:Sonnet-5

[github-actions]

Detected new or modified files in .github/workflows/. Please ensure you update the relevant documentation alongside these workflow changes.

[claude]

Summary

Reverts #108 (model default back to claude-opus-4-8) and #110 (removes the two-pass find/filter review, its compare-two-pass-review input, and the finder prompt/tests), plus a docs fix pointing the actions.md model example at the real default.

I diffed the result against 866a1456 (the tree right after #108, before two-pass landed): scripts/build-review-prompt.ts, scripts/build-review-prompt.test.ts, and templates/run-claude-review.yml come back byte-identical, and the only remaining delta in claude-review.yml is the intended claude-opus-5 -> claude-opus-4-8. No two-pass remnants survive in tracked files (--mode=, pass1, FINDER_PROMPT all grep clean; the only hits are in the untracked .tooling/ checkout, which is pulled from main at runtime). path and fs are both still used in the trimmed script, and every symbol the test file imports is still exported.

Issues Found

🟢 Suggestion - templates/run-claude-review.yml:14 still shows the old pinned ID: model: "claude-opus-4-20250514". Commit 19abbe3 deliberately synced docs/actions.md:204 to claude-opus-4-8 (the actual workflow default; the docs had said claude-opus-4-20250514 since before #108). The template is now the last place carrying the stale value, and this PR already edits the line right below it. One-line change while you are in the file.

Areas Reviewed

• Version skew: claude-review.yml checks out tooling with ref: main, so scripts always come from main while the workflow file comes from the caller's ref. Dropping --mode=legacy from the workflow and from the script in the same commit keeps those in sync, and the template pins @main. No skew window.
• Testing: the deleted tests only covered deleted code. Remaining loadRepoConfig / buildPrompt / DEFAULT_PROMPT coverage is untouched.
• Docs: docs/actions.md drops the flag from both the example block and the inputs list, and the stated timeout-minutes: 30 default matches claude-review.yml.

Questions for Author

1. Did any consumer repo add compare-two-pass-review: true to its caller workflow while feat: two-pass Claude review (find, then filter) to cut false positives - behind feature flag #110 was on main? Removing the input means those callers now pass something the reusable workflow no longer declares. Given feat: two-pass Claude review (find, then filter) to cut false positives - behind feature flag #110 merged and was reverted the same day this is probably moot, but it is a cheap check.
2. Is the two-pass approach coming back in some form, or is this a full retreat? The prompts and tests are recoverable from 1ab8ec1 either way, so asking to get the intent on record, not to keep the code around.