diff --git a/README.md b/README.md
index 407c479..c870155 100644
--- a/README.md
+++ b/README.md
@@ -227,8 +227,22 @@ feature/xxx ──PR──> test ──PR──> prd
                           ↑ 第二级：同样审查通过才合并
 ```
 
+**直接推送**也走同一条链路：往 `test` 推代码（没有 PR）时，审查通过后服务会
+自动开一个 `test → prd` 的 PR 并合并它，然后关闭该仓库所有审查 Issue。
+
+自动开的晋级 PR 会带一个标记，它自身的 webhook 事件会被忽略——同一批提交在
+push 时已经审过，重复审会在代码合并后凭空造出 Issue。
+
+晋级 PR 始终使用 `merge` 而非 `squash`：squash 会把提交重写成全新提交，
+两个长期共存的分支每晋级一次就多分叉一点，最终必然冲突；真正的 merge
+保留共同祖先，下次晋级只携带新提交。
+
 `managed_branch` 只决定「push 事件没有对应 PR 时，拿哪个分支做对比基准」，以及新仓库的默认值。
 
+**Issue 生命周期**：只要发生合并（服务自动合并、或人在 Gitea 里手动合并），
+该仓库所有由本服务创建的 open Issue 都会被评论并关闭——代码已经落地，
+上一轮的问题描述的是不再存在的状态。下一个问题会在下一次审查时重新开 Issue。
+
 **审查范围**：PR 事件优先用 PR 的目标分支作为基准；push 事件优先用 webhook 里的 `before`，当 `before` 是新建分支的全零值或缺失时，退回到与管理分支的 merge-base。
 
 **审查背景**：仓库配置里的「审查背景 / 需求」是多行文本，既作为 OCR 的 `--background` 传给模型，也会完整记录到审查历史，方便回溯「当时是按什么需求审的」。
diff --git a/app/lib/gitea.js b/app/lib/gitea.js
index 21a24bb..b06bdc9 100644
--- a/app/lib/gitea.js
+++ b/app/lib/gitea.js
@@ -232,6 +232,27 @@ export class GiteaClient {
     return this.get(`/api/v1/repos/${owner}/${repo}/pulls/${index}`);
   }
 
+  /** Open a pull request. */
+  async createPullRequest(owner, repo, { title, head, base, body = "" }) {
+    return this.post(`/api/v1/repos/${owner}/${repo}/pulls`, { title, head, base, body });
+  }
+
+  /** Close a pull request without merging it. */
+  async closePullRequest(owner, repo, index) {
+    return this.patch(`/api/v1/repos/${owner}/${repo}/pulls/${index}`, { state: "closed" });
+  }
+
+  /** Compare two refs; returns the file list, or null when they are identical. */
+  async compareRefs(owner, repo, base, head) {
+    try {
+      return await this.get(`/api/v1/repos/${owner}/${repo}/compare/${base}...${head}`);
+    } catch (err) {
+      // Gitea answers 404 when the two refs point at the same commit.
+      if (err.status === 404) return null;
+      throw err;
+    }
+  }
+
   async listPullRequests(owner, repo, query = {}) {
     return this.get(`/api/v1/repos/${owner}/${repo}/pulls`, { query });
   }
diff --git a/app/lib/ocr.js b/app/lib/ocr.js
index f562ae2..f1399ac 100644
--- a/app/lib/ocr.js
+++ b/app/lib/ocr.js
@@ -183,6 +183,14 @@ export class OcrRunner {
     return res.stdout.trim().split("\n")[0];
   }
 
+  /** Parent commit count for a commit; >1 means it is a merge commit. */
+  async parentCount(dir, sha) {
+    const res = await git(["rev-list", "--parents", "-n", "1", sha], { cwd: dir, timeoutMs: 60000 });
+    if (res.code !== 0) return 0;
+    const parts = res.stdout.trim().split(/\s+/).filter(Boolean);
+    return Math.max(0, parts.length - 1);
+  }
+
   async changedFiles(dir, fromSha, toSha) {
     const res = await git(
       ["diff", "--name-only", "--diff-filter=ACMRTUXB", fromSha, toSha],
diff --git a/app/lib/review.js b/app/lib/review.js
index 3449f45..ea85e9d 100644
--- a/app/lib/review.js
+++ b/app/lib/review.js
@@ -14,6 +14,9 @@ import {
 
 export const SUMMARY_MARKER = "<!-- gitea-codereview:summary -->";
 export const COMMENT_MARKER = "<!-- gitea-codereview -->";
+// Marks a pull request this service opened itself to promote a branch. Its
+// webhook event is ignored because the same commits were already reviewed.
+export const PROMOTION_MARKER = "<!-- gitea-codereview:promotion -->";
 export const STATUS_CONTEXT = "code-review/ocr";
 
 export class SkipJob extends Error {
@@ -645,14 +648,20 @@ export class ReviewEngine {
     return created?.number ?? null;
   }
 
+  /**
+   * Get the change into the next branch up the chain.
+   *
+   * When the reviewed ref has an open pull request we merge it. When it does
+   * not (a direct push to a checked branch) we open one automatically, so a
+   * push to `test` still flows into `prd` with a reviewable record.
+   */
   async maybeAutoMerge({
     client, repo, job, prNumber, blocking, toSha, appendLog,
     reviewIncomplete = false, statusState = "success",
   }) {
     if (!repo.auto_merge) return false;
     if (!prNumber) {
-      appendLog("auto-merge skipped: no pull request for this branch");
-      return false;
+      return this.promoteBranch({ client, repo, job, toSha, appendLog, reviewIncomplete, statusState });
     }
     // A two-stage flow (feature -> test -> prd) legitimately merges into a
     // checked branch that is not the managed branch, so the gate is "is the
@@ -706,7 +715,8 @@ export class ReviewEngine {
         headCommitId: toSha,
         mergeWhenChecksSucceed: repo.auto_merge_mode === "when_checks_succeed",
       });
-      appendLog("auto-merge requested");
+      appendLog(`auto-merge requested for PR #${prNumber}`);
+      await this.closeRepoIssues({ client, repo, appendLog, reason: `PR #${prNumber} 已合并` });
       return true;
     } catch (err) {
       appendLog(`auto-merge failed: ${err.message}`);
@@ -714,6 +724,192 @@ export class ReviewEngine {
     }
   }
 
+  /**
+   * Open a pull request from the pushed branch into the next branch in the
+   * chain and merge it, then close the repository's review issues.
+   */
+  async promoteBranch({ client, repo, job, toSha, appendLog, reviewIncomplete, statusState }) {
+    if (reviewIncomplete) {
+      appendLog("auto-merge skipped: review coverage was incomplete");
+      return false;
+    }
+    if (statusState !== "success") {
+      appendLog(`auto-merge skipped: commit status is ${statusState}`);
+      return false;
+    }
+    if (!branchMatches(job.ref_name, repo.check_branches)) {
+      appendLog(`auto-merge skipped: ${job.ref_name} is not a checked branch`);
+      return false;
+    }
+
+    // Walk up the chain: test -> prd. The managed branch is the top, so a push
+    // to it has nowhere to go.
+    const managed = repo.managed_branch;
+    if (job.ref_name === managed) {
+      appendLog(`auto-merge skipped: ${job.ref_name} is the managed branch`);
+      return false;
+    }
+    const target = managed;
+    if (!branchMatches(target, repo.check_branches) && target !== managed) {
+      appendLog(`auto-merge skipped: ${target} is not a checked branch`);
+      return false;
+    }
+
+    let head;
+    let base;
+    try {
+      head = await client.getBranch(repo.owner, repo.name, job.ref_name);
+      base = await client.getBranch(repo.owner, repo.name, target);
+    } catch (err) {
+      appendLog(`auto-merge skipped: cannot resolve branches: ${err.message}`);
+      return false;
+    }
+    const headSha = head?.commit?.id;
+    const baseSha = base?.commit?.id;
+    if (!headSha || !baseSha) {
+      appendLog("auto-merge skipped: branch head unknown");
+      return false;
+    }
+    if (headSha === baseSha) {
+      appendLog(`auto-merge skipped: ${job.ref_name} already matches ${target}`);
+      return false;
+    }
+    // Only promote the exact commit that was reviewed.
+    if (headSha !== toSha) {
+      appendLog(`auto-merge skipped: ${job.ref_name} moved to ${headSha.slice(0, 10)} after the review`);
+      return false;
+    }
+
+    // Is there already an open PR for this promotion? Reuse it instead of
+    // opening a duplicate on every push.
+    let promotionPr = null;
+    try {
+      const open = await client.listPullRequests(repo.owner, repo.name, { state: "open", limit: 50 });
+      promotionPr = (open || []).find(
+        (p) => p.head?.ref === job.ref_name && p.base?.ref === target,
+      ) ?? null;
+    } catch { /* fall through to creating one */ }
+
+    if (!promotionPr) {
+      try {
+        promotionPr = await client.createPullRequest(repo.owner, repo.name, {
+          title: `[OCR] ${job.ref_name} → ${target}`,
+          head: job.ref_name,
+          base: target,
+          body: [
+            PROMOTION_MARKER,
+            `由 gitea-codereview 自动创建。`,
+            "",
+            `- 来源分支：\`${job.ref_name}\``,
+            `- 目标分支：\`${target}\``,
+            `- 审查提交：\`${toSha}\``,
+            `- 代码审查已通过（job #${job.id}）`,
+          ].join("\n"),
+        });
+        appendLog(`opened promotion PR #${promotionPr?.number} (${job.ref_name} -> ${target})`);
+      } catch (err) {
+        appendLog(`auto-merge failed: cannot open promotion PR: ${err.message}`);
+        return false;
+      }
+    } else {
+      appendLog(`reusing open promotion PR #${promotionPr.number}`);
+    }
+
+    const index = promotionPr?.number;
+    if (!index) {
+      appendLog("auto-merge failed: promotion PR has no number");
+      return false;
+    }
+
+    // Gitea computes mergeability asynchronously and a large divergence can
+    // take a while, so poll with backoff instead of giving up after a few
+    // seconds. `null`/`undefined` means "not computed yet"; only an explicit
+    // false is a real conflict.
+    let pr = promotionPr;
+    let delayMs = 1000;
+    for (let attempt = 0; attempt < 8; attempt += 1) {
+      if (pr.mergeable === true || pr.mergeable === false) break;
+      await new Promise((r) => setTimeout(r, delayMs));
+      delayMs = Math.min(delayMs * 1.6, 8000);
+      pr = await client.getPullRequest(repo.owner, repo.name, index).catch(() => pr);
+    }
+    if (pr.mergeable === false) {
+      appendLog(`auto-merge skipped: promotion PR #${index} conflicts with ${target}`);
+      await client.createIssueComment(repo.owner, repo.name, index,
+        `自动合并失败：\`${job.ref_name}\` 与 \`${target}\` 存在冲突，需要人工解决后重新推送。\n\n` +
+        `审查提交：\`${toSha}\``).catch(() => {});
+      return false;
+    }
+    if (pr.mergeable === undefined || pr.mergeable === null) {
+      appendLog(`auto-merge skipped: promotion PR #${index} mergeability still unknown after polling`);
+      await client.createIssueComment(repo.owner, repo.name, index,
+        `自动合并暂缓：Gitea 尚未算出该 PR 是否可合并。稍后重新推送或在界面手动合并。\n\n` +
+        `审查提交：\`${toSha}\``).catch(() => {});
+      return false;
+    }
+    if (pr.head?.sha && pr.head.sha !== toSha) {
+      appendLog(`auto-merge skipped: promotion PR #${index} head moved`);
+      return false;
+    }
+
+    try {
+      // Promotion always merges (never squashes): squashing rewrites the
+      // promoted commits into a brand-new commit, so the two long-lived
+      // branches diverge a little more on every promotion and eventually
+      // conflict. A real merge keeps the shared ancestry, so the next
+      // promotion only carries the new commits.
+      await client.mergePullRequest(repo.owner, repo.name, index, {
+        style: "merge",
+        title: pr.title,
+        deleteBranch: false,
+        headCommitId: toSha,
+        mergeWhenChecksSucceed: repo.auto_merge_mode === "when_checks_succeed",
+      });
+      appendLog(`auto-merge requested for promotion PR #${index}`);
+      await this.closeRepoIssues({
+        client, repo, appendLog,
+        reason: `${job.ref_name} 已合并到 ${target}（PR #${index}）`,
+      });
+      return true;
+    } catch (err) {
+      appendLog(`auto-merge failed: promotion PR #${index}: ${err.message}`);
+      return false;
+    }
+  }
+
+  /**
+   * Close every open review issue for this repository.
+   *
+   * Called whenever a merge lands: once code is on its way into the managed
+   * branch the previous round is over, and any remaining problem will be
+   * reported again by the next review.
+   */
+  async closeRepoIssues({ client, repo, appendLog, reason }) {
+    let open = [];
+    try {
+      open = await client.get(`/api/v1/repos/${repo.owner}/${repo.name}/issues`, {
+        query: { state: "open", type: "issues", limit: 100 },
+      }) ?? [];
+    } catch (err) {
+      appendLog(`cannot list issues to close: ${err.message}`);
+      return 0;
+    }
+    const mine = open.filter((i) => String(i.body || "").includes(SUMMARY_MARKER));
+    let closed = 0;
+    for (const issue of mine) {
+      try {
+        await client.createIssueComment(repo.owner, repo.name, issue.number,
+          `已合并：${reason}。本轮问题视为结束，关闭该 Issue；如后续审查再发现问题会重新创建。`);
+        await client.updateIssue(repo.owner, repo.name, issue.number, { state: "closed" });
+        closed += 1;
+      } catch (err) {
+        appendLog(`cannot close issue #${issue.number}: ${err.message}`);
+      }
+    }
+    if (closed) appendLog(`closed ${closed} review issue(s) after merge`);
+    return closed;
+  }
+
   async failJob(job, err) {
     const message = err instanceof SkipJob
       ? `skipped: ${err.reason}`
diff --git a/app/server.js b/app/server.js
index aaf2577..7f5b4c5 100644
--- a/app/server.js
+++ b/app/server.js
@@ -15,7 +15,10 @@ import {
 import { GiteaClient } from "./lib/gitea.js";
 import { OcrRunner } from "./lib/ocr.js";
 import { JobQueue } from "./lib/queue.js";
-import { ReviewEngine, SkipJob, branchMatches, parseRepoUrl, pullRequestMatches } from "./lib/review.js";
+import {
+  ReviewEngine, SkipJob, branchMatches, parseRepoUrl, pullRequestMatches,
+  PROMOTION_MARKER,
+} from "./lib/review.js";
 
 const APP_DIR = resolve(fileURLToPath(new URL(".", import.meta.url)));
 const ROOT_DIR = resolve(APP_DIR, "..");
@@ -189,6 +192,33 @@ async function handlePush(payload, cfg) {
   const toSha = payload.after || payload.head_commit?.id;
   if (!toSha) return { queued: 0, reason: "no head commit in payload" };
 
+  // A merge that a human performed in Gitea also ends the current round: the
+  // code has landed, so the open review issues are stale.
+  if (refName === (repo.managed_branch || repo.base_branch) && payload.commits?.length) {
+    const workspace = join(CONFIG.dataDir, "workspaces", `${repo.owner}__${repo.name}`);
+    if (existsSync(join(workspace, ".git"))) {
+      try {
+        const runner = new OcrRunner({ command: cfg.ocrCommand });
+        const parents = await runner.parentCount(workspace, toSha);
+        if (parents > 1) {
+          const client = new GiteaClient({
+            baseUrl: cfg.giteaUrl,
+            token: repo.gitea_token || cfg.giteaToken,
+          });
+          const engine = new ReviewEngine({ db, config: cfg, logger });
+          const closed = await engine.closeRepoIssues({
+            client, repo, appendLog: () => {},
+            reason: `管理分支 ${refName} 收到合并提交 ${toSha.slice(0, 10)}`,
+          });
+          if (closed) logger.info(`closed ${closed} issue(s) after merge into ${refName}`);
+          return { queued: 0, reason: `merge detected on ${refName}; closed ${closed} issue(s)` };
+        }
+      } catch (err) {
+        logger.warn(`merge detection failed on ${owner}/${name}: ${err.message}`);
+      }
+    }
+  }
+
   const scoped = repo.review_scope === "pr";
   const pr = scoped ? null : await findOpenPullRequestForRef(cfg, repo, refName, toSha);
   if (scoped && !pr) {
@@ -224,19 +254,44 @@ const PR_ACTIONS = new Set([
 
 async function handlePullRequest(payload, cfg) {
   const action = payload.action;
-  if (!PR_ACTIONS.has(action)) {
-    return { queued: 0, reason: `action ${action} ignored` };
-  }
   const owner = payload.repository?.owner?.username || payload.repository?.owner?.login;
   const name = payload.repository?.name;
   const repo = owner && name ? findRepository(db, owner, name) : null;
   if (!repo || !repo.enabled) return { queued: 0, reason: "repository not configured" };
+
+  // A merged pull request is the authoritative "code has landed" signal: the
+  // open review issues describe a state that no longer exists.
+  if (action === "closed" && payload.pull_request?.merged) {
+    const pr = payload.pull_request;
+    const client = new GiteaClient({
+      baseUrl: cfg.giteaUrl,
+      token: repo.gitea_token || cfg.giteaToken,
+    });
+    const engine = new ReviewEngine({ db, config: cfg, logger });
+    const closed = await engine.closeRepoIssues({
+      client, repo, appendLog: () => {},
+      reason: `PR #${pr.number} 已合并到 ${pr.base?.ref ?? "目标分支"}`,
+    });
+    logger.info(`PR #${pr.number} merged into ${pr.base?.ref}; closed ${closed} issue(s)`);
+    return { queued: 0, closedIssues: closed, reason: "pull request merged" };
+  }
+
+  if (!PR_ACTIONS.has(action)) {
+    return { queued: 0, reason: `action ${action} ignored` };
+  }
   if (repo.review_scope === "push") {
     return { queued: 0, reason: "review_scope=push; PRs reviewed via push events" };
   }
   const pr = payload.pull_request;
   if (!pr) return { queued: 0, reason: "no pull_request in payload" };
   if (pr.draft) return { queued: 0, reason: "draft pull request" };
+
+  // A promotion pull request this service opened itself: the same commits were
+  // already reviewed when they were pushed, so reviewing again would produce a
+  // duplicate issue for code that has already been merged.
+  if (String(pr.body || "").includes(PROMOTION_MARKER)) {
+    return { queued: 0, reason: "self-created promotion pull request; already reviewed on push" };
+  }
   if (!pullRequestMatches(pr.head?.ref, pr.base?.ref, repo.check_branches)) {
     return {
       queued: 0,
diff --git a/tests/core.test.js b/tests/core.test.js
index e4924af..4cb9d47 100644
--- a/tests/core.test.js
+++ b/tests/core.test.js
@@ -7,7 +7,7 @@ import { test } from "node:test";
 import { rmSync } from "node:fs";
 
 import { parseUnifiedDiff, addedLineNumbers, diffLineNumbers, pickAnchorLine } from "../app/lib/diff.js";
-import { branchMatches, parseRepoUrl } from "../app/lib/review.js";
+import { branchMatches, parseRepoUrl, pullRequestMatches } from "../app/lib/review.js";
 import { severityAtLeast, parseList } from "../app/lib/ocr.js";
 import { normalizeBaseUrl } from "../app/lib/gitea.js";
 import {
@@ -100,6 +100,16 @@ test("branchMatches matches an explicit branch list, not globs", () => {
   assert.ok(!branchMatches("release/2.0", "release/*"), "globs are no longer patterns");
 });
 
+test("pullRequestMatches keys on the target branch, not the feature branch", () => {
+  // The two-stage flow: feature -> test -> prd.
+  assert.ok(pullRequestMatches("fix/x", "test", "test,prd"), "PR into test");
+  assert.ok(pullRequestMatches("test", "prd", "test,prd"), "promotion PR into prd");
+  assert.ok(!pullRequestMatches("fix/x", "master", "test,prd"), "PR into an unprotected branch");
+  assert.ok(pullRequestMatches("any", "any", ""), "empty list reviews everything");
+  // Listing a long-lived branch still reviews PRs originating from it.
+  assert.ok(pullRequestMatches("test", "unprotected", "test,prd"), "head branch listed");
+});
+
 test("parseRepoUrl derives owner and name from every supported URL form", () => {
   const cases = [
     ["http://192.168.31.51/kgod/myrepo.git", "kgod", "myrepo"],