feat(reviewer): do not tag maintainer after first successful review

Author: aurelleb

README.md

@@ -71,7 +71,7 @@ The reviewer maintains one welcome/status comment and the following labels:
 - `human-reviewable`
 - `ai-review-failed`
 
-It mentions `GITHUB_REVIEW_MAINTAINER` once per commit when the automated review transitions to approved.
+It mentions `GITHUB_REVIEW_MAINTAINER` only the first time a pull request transitions to approved. Later commits are reviewed normally without repeatedly notifying the maintainer.
 
 ### AI-assisted issue triage
 

src/reviews/lifecycle.ts

@@ -237,7 +237,7 @@ async function setLifecycleStatus(
 	if (
 		input.status === "ready" &&
 		input.headSha &&
-		state.lastNotifiedSha !== input.headSha
+		state.lastNotifiedSha === null
 	) {
 		const maintainer = process.env.GITHUB_REVIEW_MAINTAINER?.replace(/^@/, "");
 		if (maintainer)