diff --git a/packages/core/github/index.ts b/packages/core/github/index.ts
index b69c25120..3dd4aaff0 100644
--- a/packages/core/github/index.ts
+++ b/packages/core/github/index.ts
@@ -1 +1,2 @@
 export * from "./queries";
+export * from "./pull-request-status";
diff --git a/packages/core/github/pull-request-status.test.ts b/packages/core/github/pull-request-status.test.ts
new file mode 100644
index 000000000..b557fd43f
--- /dev/null
+++ b/packages/core/github/pull-request-status.test.ts
@@ -0,0 +1,146 @@
+import { describe, expect, it } from "vitest";
+import {
+  derivePullRequestStatusKind,
+  derivePullRequestProgressSegments,
+  shouldShowPullRequestStats,
+  type PullRequestStatusInput,
+} from "./pull-request-status";
+
+const base: PullRequestStatusInput = { state: "open" };
+
+describe("derivePullRequestStatusKind", () => {
+  it("closed beats every other signal", () => {
+    expect(
+      derivePullRequestStatusKind({
+        state: "closed",
+        mergeable_state: "dirty",
+        checks_failed: 99,
+        checks_pending: 99,
+        checks_passed: 99,
+      }),
+    ).toBe("closed");
+  });
+
+  it("merged beats every other signal except closed", () => {
+    expect(
+      derivePullRequestStatusKind({
+        state: "merged",
+        mergeable_state: "dirty",
+        checks_failed: 5,
+      }),
+    ).toBe("merged");
+  });
+
+  it("dirty conflicts wins over check signals", () => {
+    expect(
+      derivePullRequestStatusKind({
+        ...base,
+        mergeable_state: "dirty",
+        checks_passed: 3,
+      }),
+    ).toBe("conflicts");
+  });
+
+  it("any failed check beats pending and passed", () => {
+    expect(
+      derivePullRequestStatusKind({
+        ...base,
+        checks_failed: 1,
+        checks_pending: 3,
+        checks_passed: 5,
+      }),
+    ).toBe("checks_failed");
+  });
+
+  it("pending beats passed when no failure", () => {
+    expect(
+      derivePullRequestStatusKind({
+        ...base,
+        checks_pending: 1,
+        checks_passed: 5,
+      }),
+    ).toBe("checks_pending");
+  });
+
+  it("all-passed is checks_passed regardless of mergeable=clean", () => {
+    expect(
+      derivePullRequestStatusKind({
+        ...base,
+        mergeable_state: "clean",
+        checks_passed: 5,
+      }),
+    ).toBe("checks_passed");
+  });
+
+  it("clean + no suites is ready-to-merge", () => {
+    expect(
+      derivePullRequestStatusKind({ ...base, mergeable_state: "clean" }),
+    ).toBe("ready");
+  });
+
+  it("opaque mergeable values render as unknown", () => {
+    for (const m of ["blocked", "behind", "unstable", "has_hooks", "unknown", null, undefined]) {
+      expect(derivePullRequestStatusKind({ ...base, mergeable_state: m })).toBe("unknown");
+    }
+  });
+});
+
+describe("derivePullRequestProgressSegments", () => {
+  it("returns null for terminal PRs (merged / closed)", () => {
+    expect(derivePullRequestProgressSegments({ state: "merged", checks_passed: 5 })).toBeNull();
+    expect(derivePullRequestProgressSegments({ state: "closed", checks_failed: 3 })).toBeNull();
+  });
+
+  it("returns null when no suite has been observed", () => {
+    expect(derivePullRequestProgressSegments({ ...base })).toBeNull();
+    expect(
+      derivePullRequestProgressSegments({ ...base, checks_failed: 0, checks_pending: 0, checks_passed: 0 }),
+    ).toBeNull();
+  });
+
+  it("orders segments failed → pending → passed (failure leftmost)", () => {
+    const segs = derivePullRequestProgressSegments({
+      ...base,
+      checks_failed: 1,
+      checks_pending: 2,
+      checks_passed: 3,
+    });
+    expect(segs).not.toBeNull();
+    expect(segs!.map((s) => s.kind)).toEqual(["failed", "pending", "passed"]);
+  });
+
+  it("emits a zero-width segment-free output (no entry with ratio 0)", () => {
+    const segs = derivePullRequestProgressSegments({
+      ...base,
+      checks_failed: 0,
+      checks_pending: 0,
+      checks_passed: 4,
+    });
+    expect(segs).toEqual([{ kind: "passed", ratio: 1 }]);
+  });
+
+  it("ratios sum to ~1 across segments", () => {
+    const segs = derivePullRequestProgressSegments({
+      ...base,
+      checks_failed: 1,
+      checks_pending: 1,
+      checks_passed: 2,
+    })!;
+    const total = segs.reduce((acc, s) => acc + s.ratio, 0);
+    expect(total).toBeCloseTo(1, 6);
+  });
+});
+
+describe("shouldShowPullRequestStats", () => {
+  it("hides when every field is 0 or missing (legacy backend)", () => {
+    expect(shouldShowPullRequestStats({})).toBe(false);
+    expect(shouldShowPullRequestStats({ additions: 0, deletions: 0, changed_files: 0 })).toBe(false);
+  });
+
+  it("shows when at least one number is non-zero", () => {
+    expect(shouldShowPullRequestStats({ additions: 1 })).toBe(true);
+    expect(shouldShowPullRequestStats({ deletions: 1 })).toBe(true);
+    expect(shouldShowPullRequestStats({ changed_files: 1 })).toBe(true);
+    expect(shouldShowPullRequestStats({ additions: 437, deletions: 6, changed_files: 6 })).toBe(true);
+  });
+});
diff --git a/packages/core/github/pull-request-status.ts b/packages/core/github/pull-request-status.ts
new file mode 100644
index 000000000..2b80b436c
--- /dev/null
+++ b/packages/core/github/pull-request-status.ts
@@ -0,0 +1,101 @@
+import type { GitHubPullRequest } from "../types";
+
+// Status kinds rendered in the PR sidebar row's detail line. Order in the
+// pass-through table matters — the first matching rule wins. The order is
+// chosen so terminal PR states (closed / merged) short-circuit before any
+// transient CI/conflict signal, since those signals are no longer actionable
+// on a terminal PR.
+//
+// Priority (high → low):
+//   1. closed (not merged)        → status_closed
+//   2. merged                     → status_merged
+//   3. mergeable_state = "dirty"  → status_conflicts
+//   4. any failed suite           → status_checks_failed
+//   5. any pending suite          → status_checks_pending
+//   6. any passed suite           → status_checks_passed
+//   7. no suite + mergeable=clean → status_ready
+//   8. otherwise                  → status_unknown
+//
+// Note: this table is the single source of truth for the sidebar PR row. The
+// older row-with-badges implementation used a separate "hide status row for
+// terminal PRs" branch — the current row renders
+// with status_closed / status_merged text, never falling through to a
+// conflicts / checks line on a terminal PR. Keep this priority order in sync
+// with the i18n keys `pull_request_card_status_*` and with the progress-strip
+// derivation in `derivePullRequestProgressSegments` (terminal kinds get a
+// solid bar; the rest map onto the per-suite counts).
+export type PullRequestStatusKind =
+  | "closed"
+  | "merged"
+  | "conflicts"
+  | "checks_failed"
+  | "checks_pending"
+  | "checks_passed"
+  | "ready"
+  | "unknown";
+
+export interface PullRequestStatusInput {
+  state: GitHubPullRequest["state"];
+  mergeable_state?: string | null;
+  checks_failed?: number;
+  checks_pending?: number;
+  checks_passed?: number;
+}
+
+export function derivePullRequestStatusKind(input: PullRequestStatusInput): PullRequestStatusKind {
+  if (input.state === "closed") return "closed";
+  if (input.state === "merged") return "merged";
+  if (input.mergeable_state === "dirty") return "conflicts";
+  if ((input.checks_failed ?? 0) > 0) return "checks_failed";
+  if ((input.checks_pending ?? 0) > 0) return "checks_pending";
+  if ((input.checks_passed ?? 0) > 0) return "checks_passed";
+  if (input.mergeable_state === "clean") return "ready";
+  return "unknown";
+}
+
+export interface PullRequestProgressSegment {
+  kind: "failed" | "pending" | "passed";
+  ratio: number;
+}
+
+// Segmented progress bar input. Returns null when:
+//   - the PR is terminal (closed/merged) — the card paints a solid bar
+//     in a state-specific color, no segmentation needed;
+//   - no check_suite has been observed (total === 0) — the card hides
+//     the bar entirely.
+// Otherwise emits the segments left-to-right: failed → pending → passed.
+// "Failure first" is intentional: problems should be visible before signal
+// that everything is fine.
+export function derivePullRequestProgressSegments(
+  input: PullRequestStatusInput,
+): PullRequestProgressSegment[] | null {
+  if (input.state === "closed" || input.state === "merged") return null;
+  const failed = input.checks_failed ?? 0;
+  const pending = input.checks_pending ?? 0;
+  const passed = input.checks_passed ?? 0;
+  const total = failed + pending + passed;
+  if (total === 0) return null;
+  const segments: PullRequestProgressSegment[] = [];
+  if (failed > 0) segments.push({ kind: "failed", ratio: failed / total });
+  if (pending > 0) segments.push({ kind: "pending", ratio: pending / total });
+  if (passed > 0) segments.push({ kind: "passed", ratio: passed / total });
+  return segments;
+}
+
+export interface PullRequestStatsInput {
+  additions?: number;
+  deletions?: number;
+  changed_files?: number;
+}
+
+// shouldShowPullRequestStats encodes the "old backend → new frontend" guard:
+// when the backend that served this PR row doesn't know about the stats
+// columns yet, every numeric field defaults to 0. Rendering "+0 −0 · 0 files"
+// in that case would be a lie (the PR almost certainly has real changes),
+// so we hide the entire stats row until at least one signal is non-zero.
+export function shouldShowPullRequestStats(input: PullRequestStatsInput): boolean {
+  const a = input.additions ?? 0;
+  const d = input.deletions ?? 0;
+  const f = input.changed_files ?? 0;
+  return a + d + f > 0;
+}
diff --git a/packages/core/types/github.ts b/packages/core/types/github.ts
index 0cf2ebdec..dafbca2fe 100644
--- a/packages/core/types/github.ts
+++ b/packages/core/types/github.ts
@@ -1,5 +1,16 @@
 export type GitHubPullRequestState = "open" | "closed" | "merged" | "draft";
 
+/** Aggregated CI status for a PR's current head SHA, computed server-side from
+ * the latest check_suite per app. `null` when no completed suite has been seen
+ * yet (e.g. PR just opened, or repository has no CI configured). */
+export type GitHubPullRequestChecksConclusion = "passed" | "failed" | "pending";
+
+/** Raw mirror of GitHub's `mergeable_state`. The UI only surfaces `clean` and
+ * `dirty`; the other values (`blocked`, `behind`, `unstable`, `unknown`,
+ * `has_hooks`, `draft`) round-trip but render as unknown to avoid asserting
+ * "conflicts" for blocking reasons that aren't actual conflicts. */
+export type GitHubMergeableState = string;
+
 export interface GitHubInstallation {
   id: string;
   workspace_id: string;
@@ -26,6 +37,20 @@ export interface GitHubPullRequest {
   closed_at: string | null;
   pr_created_at: string;
   pr_updated_at: string;
+  /** Optional; older backends omit this field. */
+  mergeable_state?: GitHubMergeableState | null;
+  /** Optional; older backends omit this field. */
+  checks_conclusion?: GitHubPullRequestChecksConclusion | null;
+  /** Per-suite counts that feed the segmented progress bar. Older backends
+   * omit these; treat absence as 0 (the card renders only when sum > 0). */
+  checks_passed?: number;
+  checks_failed?: number;
+  checks_pending?: number;
+  /** Diff stats from GitHub's `pull_request` payload. Older backends omit
+   * these fields; we treat 0/0/0 as "unknown" and hide the stats row. */
+  additions?: number;
+  deletions?: number;
+  changed_files?: number;
 }
 
 export interface ListGitHubInstallationsResponse {
diff --git a/packages/core/types/index.ts b/packages/core/types/index.ts
index 5b4c47e10..75e997402 100644
--- a/packages/core/types/index.ts
+++ b/packages/core/types/index.ts
@@ -79,7 +79,9 @@ export type {
 export type { PinnedItem, PinnedItemType, CreatePinRequest, ReorderPinsRequest } from "./pin";
 export type {
   GitHubInstallation,
+  GitHubMergeableState,
   GitHubPullRequest,
+  GitHubPullRequestChecksConclusion,
   GitHubPullRequestState,
   ListGitHubInstallationsResponse,
   GitHubConnectResponse,
diff --git a/packages/views/issues/components/pull-request-list.test.tsx b/packages/views/issues/components/pull-request-list.test.tsx
new file mode 100644
index 000000000..f1719d3fe
--- /dev/null
+++ b/packages/views/issues/components/pull-request-list.test.tsx
@@ -0,0 +1,211 @@
+import { describe, expect, it, vi } from "vitest";
+import { render, screen } from "@testing-library/react";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { I18nProvider } from "@multica/core/i18n/react";
+import type { GitHubPullRequest } from "@multica/core/types";
+import enCommon from "../../locales/en/common.json";
+import enIssues from "../../locales/en/issues.json";
+
+const TEST_RESOURCES = { en: { common: enCommon, issues: enIssues } };
+
+vi.mock("@multica/core/github/queries", async () => {
+  const actual = await vi.importActual<typeof import("@multica/core/github/queries")>(
+    "@multica/core/github/queries",
+  );
+  return {
+    ...actual,
+    issuePullRequestsOptions: (issueId: string) => ({
+      queryKey: ["github", "pull-requests", issueId],
+      queryFn: async () => ({ pull_requests: mockPRs }),
+      enabled: !!issueId,
+    }),
+  };
+});
+
+import { PullRequestList } from "./pull-request-list";
+
+let mockPRs: GitHubPullRequest[] = [];
+
+function makePR(overrides: Partial<GitHubPullRequest> = {}): GitHubPullRequest {
+  return {
+    id: "pr-1",
+    workspace_id: "ws-1",
+    repo_owner: "acme",
+    repo_name: "widget",
+    number: 1,
+    title: "Test PR",
+    state: "open",
+    html_url: "https://example.test/pr/1",
+    branch: "feat/x",
+    author_login: "octocat",
+    author_avatar_url: null,
+    merged_at: null,
+    closed_at: null,
+    pr_created_at: "2026-01-01T00:00:00Z",
+    pr_updated_at: "2026-01-01T00:00:00Z",
+    mergeable_state: null,
+    checks_conclusion: null,
+    checks_passed: 0,
+    checks_failed: 0,
+    checks_pending: 0,
+    additions: 0,
+    deletions: 0,
+    changed_files: 0,
+    ...overrides,
+  };
+}
+
+function renderList() {
+  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
+  return render(
+    <QueryClientProvider client={qc}>
+      <I18nProvider resources={TEST_RESOURCES} locale="en">
+        <PullRequestList issueId="issue-1" />
+      </I18nProvider>
+    </QueryClientProvider>,
+  );
+}
+
+async function waitForRender() {
+  return screen.findAllByRole("link");
+}
+
+describe("PullRequestList sidebar rows", () => {
+  it("uses the sidebar list-row surface instead of a card surface", async () => {
+    mockPRs = [makePR({ title: "Visual row" })];
+    renderList();
+    await waitForRender();
+    const row = screen.getByTestId("pull-request-row");
+    expect(row).toHaveClass("rounded-md", "-mx-2", "hover:bg-accent/50");
+    expect(row).not.toHaveClass("rounded-lg", "border", "bg-card");
+  });
+
+  it("renders All-checks-passed status when only passed counts are non-zero", async () => {
+    mockPRs = [makePR({ checks_passed: 3 })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("All checks passed")).toBeInTheDocument();
+  });
+
+  it("renders Some-checks-failed when any failed count is non-zero", async () => {
+    mockPRs = [makePR({ checks_failed: 1, checks_passed: 5 })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("Some checks failed")).toBeInTheDocument();
+  });
+
+  it("renders pending status when only pending suites remain", async () => {
+    mockPRs = [makePR({ checks_pending: 2, checks_passed: 1 })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("Some checks haven't completed yet")).toBeInTheDocument();
+  });
+
+  it("renders conflicts status when mergeable_state=dirty", async () => {
+    mockPRs = [makePR({ mergeable_state: "dirty" })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("Has merge conflicts")).toBeInTheDocument();
+  });
+
+  it("renders Ready-to-merge when mergeable=clean and no suites observed", async () => {
+    mockPRs = [makePR({ mergeable_state: "clean" })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("Ready to merge")).toBeInTheDocument();
+  });
+
+  it("renders Merged status for merged PRs, suppressing conflict/check text", async () => {
+    mockPRs = [
+      makePR({
+        state: "merged",
+        mergeable_state: "dirty",
+        checks_conclusion: "failed",
+        checks_failed: 5,
+      }),
+    ];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("Merged")).toBeInTheDocument();
+    expect(screen.queryByText("Has merge conflicts")).not.toBeInTheDocument();
+    expect(screen.queryByText("Some checks failed")).not.toBeInTheDocument();
+    expect(screen.queryByText("Conflicts")).not.toBeInTheDocument();
+    expect(screen.queryByText("Checks failed")).not.toBeInTheDocument();
+  });
+
+  it("renders Closed-without-merging status for closed PRs, suppressing conflict/check badges", async () => {
+    mockPRs = [
+      makePR({
+        state: "closed",
+        mergeable_state: "clean",
+        checks_conclusion: "passed",
+        checks_passed: 3,
+      }),
+    ];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("Closed without merging")).toBeInTheDocument();
+    expect(screen.queryByText("Ready to merge")).not.toBeInTheDocument();
+    expect(screen.queryByText("All checks passed")).not.toBeInTheDocument();
+    expect(screen.queryByText("No conflicts")).not.toBeInTheDocument();
+    expect(screen.queryByText("Checks passed")).not.toBeInTheDocument();
+  });
+
+  it("hides stats row when all stats are 0 (legacy backend)", async () => {
+    mockPRs = [makePR()];
+    renderList();
+    await waitForRender();
+    expect(screen.queryByText(/files?$/)).not.toBeInTheDocument();
+    expect(screen.queryByText(/^\+0/)).not.toBeInTheDocument();
+  });
+
+  it("shows stats row with additions / deletions / file count when present", async () => {
+    mockPRs = [makePR({ additions: 437, deletions: 6, changed_files: 6 })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("+437")).toBeInTheDocument();
+    expect(screen.getByText("−6")).toBeInTheDocument();
+    expect(screen.getByText("6 files")).toBeInTheDocument();
+  });
+
+  it("uses singular file copy when changed_files=1", async () => {
+    mockPRs = [makePR({ additions: 1, changed_files: 1 })];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("1 file")).toBeInTheDocument();
+  });
+
+  it("collapses extra PR rows past the visible limit behind Show more toggle", async () => {
+    mockPRs = [
+      makePR({ id: "a", number: 1, title: "PR-A" }),
+      makePR({ id: "b", number: 2, title: "PR-B" }),
+      makePR({ id: "c", number: 3, title: "PR-C" }),
+      makePR({ id: "d", number: 4, title: "PR-D" }),
+      makePR({ id: "e", number: 5, title: "PR-E" }),
+    ];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("PR-A")).toBeInTheDocument();
+    expect(screen.getByText("PR-B")).toBeInTheDocument();
+    expect(screen.getByText("PR-C")).toBeInTheDocument();
+    expect(screen.queryByText("PR-D")).not.toBeInTheDocument();
+    expect(screen.queryByText("PR-E")).not.toBeInTheDocument();
+    expect(screen.getByText("Show 2 more")).toBeInTheDocument();
+  });
+
+  it("collapses to 3 rows + hidden tail when count == threshold", async () => {
+    mockPRs = [
+      makePR({ id: "a", number: 1, title: "PR-A" }),
+      makePR({ id: "b", number: 2, title: "PR-B" }),
+      makePR({ id: "c", number: 3, title: "PR-C" }),
+      makePR({ id: "d", number: 4, title: "PR-D" }),
+    ];
+    renderList();
+    await waitForRender();
+    expect(screen.getByText("PR-A")).toBeInTheDocument();
+    expect(screen.getByText("PR-B")).toBeInTheDocument();
+    expect(screen.getByText("PR-C")).toBeInTheDocument();
+    expect(screen.queryByText("PR-D")).not.toBeInTheDocument();
+    expect(screen.getByText("Show 1 more")).toBeInTheDocument();
+  });
+});
diff --git a/packages/views/issues/components/pull-request-list.tsx b/packages/views/issues/components/pull-request-list.tsx
index c9e444acb..e54be4fae 100644
--- a/packages/views/issues/components/pull-request-list.tsx
+++ b/packages/views/issues/components/pull-request-list.tsx
@@ -1,18 +1,40 @@
 "use client";
 
+import { useState } from "react";
 import { useQuery } from "@tanstack/react-query";
 import {
+  CheckCircle2,
+  CircleDashed,
+  GitMerge,
   GitPullRequest,
   GitPullRequestArrow,
   GitPullRequestClosed,
-  GitMerge,
   GitPullRequestDraft,
+  TriangleAlert,
+  XCircle,
 } from "lucide-react";
-import { issuePullRequestsOptions } from "@multica/core/github/queries";
-import type { GitHubPullRequest, GitHubPullRequestState } from "@multica/core/types";
+import {
+  issuePullRequestsOptions,
+  derivePullRequestStatusKind,
+  derivePullRequestProgressSegments,
+  shouldShowPullRequestStats,
+  type PullRequestStatusKind,
+  type PullRequestProgressSegment,
+} from "@multica/core/github";
+import type {
+  GitHubPullRequest,
+  GitHubPullRequestChecksConclusion,
+  GitHubPullRequestState,
+} from "@multica/core/types";
 import { cn } from "@multica/ui/lib/utils";
 import { useT } from "../../i18n";
 
+type IssuesT = ReturnType<typeof useT<"issues">>["t"];
+
+// Keep the existing sidebar density: show the first 3 PR rows inline, then
+// collapse the rest once the section reaches 4 rows.
+const PR_LIMIT_BEFORE_COLLAPSE = 4;
+
 const STATE_ICON: Record<
   GitHubPullRequestState,
   { icon: React.ComponentType<{ className?: string }>; className: string }
@@ -23,8 +45,18 @@ const STATE_ICON: Record<
   closed: { icon: GitPullRequestClosed, className: "text-rose-600 dark:text-rose-400" },
 };
 
+const CHECKS_ICON: Record<
+  GitHubPullRequestChecksConclusion,
+  { icon: React.ComponentType<{ className?: string }>; className: string }
+> = {
+  passed: { icon: CheckCircle2, className: "text-emerald-600 dark:text-emerald-400" },
+  failed: { icon: XCircle, className: "text-rose-600 dark:text-rose-400" },
+  pending: { icon: CircleDashed, className: "text-amber-600 dark:text-amber-400" },
+};
+
 export function PullRequestList({ issueId }: { issueId: string }) {
   const { t } = useT("issues");
+  const [expanded, setExpanded] = useState(false);
   const { data, isLoading } = useQuery(issuePullRequestsOptions(issueId));
   const prs = data?.pull_requests ?? [];
 
@@ -39,11 +71,35 @@ export function PullRequestList({ issueId }: { issueId: string }) {
     );
   }
 
+  // Render rule:
+  //   - <  PR_LIMIT_BEFORE_COLLAPSE: every PR row is visible.
+  //   - >= PR_LIMIT_BEFORE_COLLAPSE: first (LIMIT - 1) rows are visible and
+  //     the remainder sits behind a toggle.
+  const useCollapse = prs.length >= PR_LIMIT_BEFORE_COLLAPSE;
+  const expandedHead = useCollapse ? prs.slice(0, PR_LIMIT_BEFORE_COLLAPSE - 1) : prs;
+  const collapsedTail = useCollapse ? prs.slice(PR_LIMIT_BEFORE_COLLAPSE - 1) : [];
+
   return (
     <div className="space-y-1">
-      {prs.map((pr) => (
+      {expandedHead.map((pr) => (
         <PullRequestRow key={pr.id} pr={pr} />
       ))}
+      {useCollapse ? (
+        <div className="space-y-1">
+          {expanded
+            ? collapsedTail.map((pr) => <PullRequestRow key={pr.id} pr={pr} />)
+            : null}
+          <button
+            type="button"
+            onClick={() => setExpanded((v) => !v)}
+            className="block w-[calc(100%+1rem)] -mx-2 rounded-md px-2 py-1.5 text-left text-[11px] text-muted-foreground hover:bg-accent/50 hover:text-foreground transition-colors"
+          >
+            {expanded
+              ? t(($) => $.detail.pull_request_card_show_less)
+              : t(($) => $.detail.pull_request_card_show_more, { count: collapsedTail.length })}
+          </button>
+        </div>
+      ) : null}
     </div>
   );
 }
@@ -51,32 +107,230 @@ export function PullRequestList({ issueId }: { issueId: string }) {
 function PullRequestRow({ pr }: { pr: GitHubPullRequest }) {
   const { t } = useT("issues");
   const cfg = STATE_ICON[pr.state] ?? { icon: GitPullRequest, className: "" };
-  const Icon = cfg.icon;
-  const label =
-    pr.state === "open"
-      ? t(($) => $.detail.pull_request_state_open)
-      : pr.state === "draft"
-        ? t(($) => $.detail.pull_request_state_draft)
-        : pr.state === "merged"
-          ? t(($) => $.detail.pull_request_state_merged)
-          : pr.state === "closed"
-            ? t(($) => $.detail.pull_request_state_closed)
-            : pr.state;
+  const StateIcon = cfg.icon;
+  const kind = derivePullRequestStatusKind({
+    state: pr.state,
+    mergeable_state: pr.mergeable_state,
+    checks_failed: pr.checks_failed,
+    checks_pending: pr.checks_pending,
+    checks_passed: pr.checks_passed,
+  });
+  const segments = derivePullRequestProgressSegments({
+    state: pr.state,
+    checks_failed: pr.checks_failed,
+    checks_pending: pr.checks_pending,
+    checks_passed: pr.checks_passed,
+  });
+  const showStats = shouldShowPullRequestStats({
+    additions: pr.additions,
+    deletions: pr.deletions,
+    changed_files: pr.changed_files,
+  });
+  const statusText = useStatusText(kind);
+  const draftPrefix = pr.state === "draft";
+  const stateLabel = getStateLabel(pr.state, t);
+
   return (
     <a
+      data-testid="pull-request-row"
       href={pr.html_url}
       target="_blank"
       rel="noreferrer noopener"
-      className="flex items-start gap-2 rounded-md px-2 py-1.5 -mx-2 hover:bg-accent/50 transition-colors group"
+      className={cn(
+        "flex items-start gap-2 rounded-md px-2 py-1.5 -mx-2 hover:bg-accent/50 transition-colors group",
+        draftPrefix ? "opacity-80" : null,
+      )}
     >
-      <Icon className={cn("h-3.5 w-3.5 mt-0.5 shrink-0", cfg.className)} />
+      <StateIcon className={cn("h-3.5 w-3.5 mt-0.5 shrink-0", cfg.className)} />
       <div className="min-w-0 flex-1">
-        <p className="text-xs font-medium truncate group-hover:text-foreground">{pr.title}</p>
+        <p className="text-xs font-medium leading-snug truncate group-hover:text-foreground">
+          {pr.title}
+        </p>
         <p className="text-[11px] text-muted-foreground truncate">
-          {pr.repo_owner}/{pr.repo_name}#{pr.number} · {label}
+          {pr.repo_owner}/{pr.repo_name}#{pr.number} · {stateLabel}
           {pr.author_login ? ` · @${pr.author_login}` : null}
         </p>
+        <PullRequestRowDetails
+          pr={pr}
+          segments={segments}
+          showStats={showStats}
+          statusText={
+            draftPrefix
+              ? t(($) => $.detail.pull_request_card_draft_prefix, { status: statusText })
+              : statusText
+          }
+          statusKind={kind}
+        />
       </div>
     </a>
   );
 }
+
+function PullRequestRowDetails({
+  pr,
+  segments,
+  showStats,
+  statusText,
+  statusKind,
+}: {
+  pr: GitHubPullRequest;
+  segments: PullRequestProgressSegment[] | null;
+  showStats: boolean;
+  statusText: string;
+  statusKind: PullRequestStatusKind;
+}) {
+  const { t } = useT("issues");
+  const checksBadge = getChecksBadge(pr, t);
+  const conflictsBadge = getConflictsBadge(pr, t);
+  const isTerminal = statusKind === "closed" || statusKind === "merged";
+  const showChecksBadge =
+    !isTerminal &&
+    !!checksBadge &&
+    statusKind !== "checks_failed" &&
+    statusKind !== "checks_pending" &&
+    statusKind !== "checks_passed";
+  const showConflictsBadge =
+    !isTerminal && !!conflictsBadge && statusKind !== "conflicts" && statusKind !== "ready";
+
+  return (
+    <div className="mt-1 flex flex-wrap items-center gap-x-2 gap-y-0.5 text-[11px] text-muted-foreground">
+      {showStats ? <PullRequestStats pr={pr} /> : null}
+      <PullRequestProgressStrip segments={segments} />
+      <span className="truncate">{statusText}</span>
+      {showChecksBadge ? <PullRequestBadge badge={checksBadge} /> : null}
+      {showConflictsBadge ? <PullRequestBadge badge={conflictsBadge} /> : null}
+    </div>
+  );
+}
+
+function PullRequestStats({ pr }: { pr: GitHubPullRequest }) {
+  const { t } = useT("issues");
+  return (
+    <span className="inline-flex items-center gap-1.5 tabular-nums">
+      <span className="text-emerald-600 dark:text-emerald-400">+{pr.additions ?? 0}</span>
+      <span className="text-rose-600 dark:text-rose-400">−{pr.deletions ?? 0}</span>
+      <span aria-hidden="true">·</span>
+      <span>
+        {t(($) => $.detail.pull_request_card_files_count, {
+          count: pr.changed_files ?? 0,
+        })}
+      </span>
+    </span>
+  );
+}
+
+function PullRequestProgressStrip({
+  segments,
+}: {
+  segments: PullRequestProgressSegment[] | null;
+}) {
+  if (!segments) return null;
+  return (
+    <span className="flex h-1 w-12 shrink-0 overflow-hidden rounded-full bg-muted" aria-hidden="true">
+      {segments.map((seg) => (
+        <span
+          key={seg.kind}
+          className={cn(
+            "h-full block",
+            seg.kind === "failed" && "bg-rose-500 dark:bg-rose-400",
+            seg.kind === "pending" && "bg-amber-500 dark:bg-amber-400",
+            seg.kind === "passed" && "bg-emerald-500 dark:bg-emerald-400",
+          )}
+          style={{ width: `${seg.ratio * 100}%` }}
+        />
+      ))}
+    </span>
+  );
+}
+
+interface PullRequestBadgeConfig {
+  icon: React.ComponentType<{ className?: string }>;
+  label: string;
+  className: string;
+}
+
+function PullRequestBadge({ badge }: { badge: PullRequestBadgeConfig }) {
+  const Icon = badge.icon;
+  return (
+    <span className="inline-flex items-center gap-1">
+      <Icon className={cn("h-3 w-3", badge.className)} />
+      {badge.label}
+    </span>
+  );
+}
+
+function getConflictsBadge(
+  pr: GitHubPullRequest,
+  t: IssuesT,
+): PullRequestBadgeConfig | null {
+  const mergeable = pr.mergeable_state ?? null;
+  return mergeable === "dirty"
+    ? {
+        icon: TriangleAlert,
+        label: t(($) => $.detail.pull_request_conflicts_dirty),
+        className: "text-rose-600 dark:text-rose-400",
+      }
+    : mergeable === "clean"
+      ? {
+          icon: CheckCircle2,
+          label: t(($) => $.detail.pull_request_conflicts_clean),
+          className: "text-emerald-600 dark:text-emerald-400",
+        }
+      : null;
+}
+
+function getChecksBadge(
+  pr: GitHubPullRequest,
+  t: IssuesT,
+): PullRequestBadgeConfig | null {
+  const checks = pr.checks_conclusion ?? null;
+  return checks && CHECKS_ICON[checks]
+    ? {
+        icon: CHECKS_ICON[checks].icon,
+        className: CHECKS_ICON[checks].className,
+        label:
+          checks === "passed"
+            ? t(($) => $.detail.pull_request_checks_passed)
+            : checks === "failed"
+              ? t(($) => $.detail.pull_request_checks_failed)
+              : t(($) => $.detail.pull_request_checks_pending),
+      }
+    : null;
+}
+
+function getStateLabel(
+  state: GitHubPullRequestState,
+  t: IssuesT,
+): string {
+  return state === "open"
+    ? t(($) => $.detail.pull_request_state_open)
+    : state === "draft"
+      ? t(($) => $.detail.pull_request_state_draft)
+      : state === "merged"
+        ? t(($) => $.detail.pull_request_state_merged)
+        : state === "closed"
+          ? t(($) => $.detail.pull_request_state_closed)
+          : state;
+}
+
+function useStatusText(kind: PullRequestStatusKind): string {
+  const { t } = useT("issues");
+  switch (kind) {
+    case "closed":
+      return t(($) => $.detail.pull_request_card_status_closed);
+    case "merged":
+      return t(($) => $.detail.pull_request_card_status_merged);
+    case "conflicts":
+      return t(($) => $.detail.pull_request_card_status_conflicts);
+    case "checks_failed":
+      return t(($) => $.detail.pull_request_card_status_checks_failed);
+    case "checks_pending":
+      return t(($) => $.detail.pull_request_card_status_checks_pending);
+    case "checks_passed":
+      return t(($) => $.detail.pull_request_card_status_checks_passed);
+    case "ready":
+      return t(($) => $.detail.pull_request_card_status_ready);
+    case "unknown":
+      return t(($) => $.detail.pull_request_card_status_unknown);
+  }
+}
diff --git a/packages/views/locales/en/issues.json b/packages/views/locales/en/issues.json
index 9b6381aae..187335df7 100644
--- a/packages/views/locales/en/issues.json
+++ b/packages/views/locales/en/issues.json
@@ -134,6 +134,24 @@
     "pull_request_state_draft": "Draft",
     "pull_request_state_merged": "Merged",
     "pull_request_state_closed": "Closed",
+    "pull_request_checks_passed": "Checks passed",
+    "pull_request_checks_failed": "Checks failed",
+    "pull_request_checks_pending": "Checks pending",
+    "pull_request_conflicts_clean": "No conflicts",
+    "pull_request_conflicts_dirty": "Conflicts",
+    "pull_request_card_status_closed": "Closed without merging",
+    "pull_request_card_status_merged": "Merged",
+    "pull_request_card_status_conflicts": "Has merge conflicts",
+    "pull_request_card_status_checks_failed": "Some checks failed",
+    "pull_request_card_status_checks_pending": "Some checks haven't completed yet",
+    "pull_request_card_status_checks_passed": "All checks passed",
+    "pull_request_card_status_ready": "Ready to merge",
+    "pull_request_card_status_unknown": "Checks haven't reported yet",
+    "pull_request_card_draft_prefix": "Draft · {{status}}",
+    "pull_request_card_files_count_one": "{{count}} file",
+    "pull_request_card_files_count_other": "{{count}} files",
+    "pull_request_card_show_more": "Show {{count}} more",
+    "pull_request_card_show_less": "Show less",
     "prop_status": "Status",
     "prop_priority": "Priority",
     "prop_assignee": "Assignee",
diff --git a/packages/views/locales/zh-Hans/issues.json b/packages/views/locales/zh-Hans/issues.json
index 4788d75b0..ea0cc074b 100644
--- a/packages/views/locales/zh-Hans/issues.json
+++ b/packages/views/locales/zh-Hans/issues.json
@@ -133,6 +133,24 @@
     "pull_request_state_draft": "Draft",
     "pull_request_state_merged": "Merged",
     "pull_request_state_closed": "Closed",
+    "pull_request_checks_passed": "Checks 通过",
+    "pull_request_checks_failed": "Checks 失败",
+    "pull_request_checks_pending": "Checks 运行中",
+    "pull_request_conflicts_clean": "无冲突",
+    "pull_request_conflicts_dirty": "存在冲突",
+    "pull_request_card_status_closed": "已关闭，未合入",
+    "pull_request_card_status_merged": "已合入",
+    "pull_request_card_status_conflicts": "存在合并冲突",
+    "pull_request_card_status_checks_failed": "部分检查失败",
+    "pull_request_card_status_checks_pending": "部分检查仍在运行",
+    "pull_request_card_status_checks_passed": "全部检查通过",
+    "pull_request_card_status_ready": "可以合入",
+    "pull_request_card_status_unknown": "暂无检查信息",
+    "pull_request_card_draft_prefix": "Draft · {{status}}",
+    "pull_request_card_files_count_one": "{{count}} 个文件",
+    "pull_request_card_files_count_other": "{{count}} 个文件",
+    "pull_request_card_show_more": "展开剩余 {{count}} 个",
+    "pull_request_card_show_less": "收起",
     "prop_status": "状态",
     "prop_priority": "优先级",
     "prop_assignee": "负责人",
diff --git a/scripts/screenshot-pr-cards.mjs b/scripts/screenshot-pr-cards.mjs
new file mode 100644
index 000000000..4c00cdd5a
--- /dev/null
+++ b/scripts/screenshot-pr-cards.mjs
@@ -0,0 +1,91 @@
+// Standalone screenshot capture for the 6 PR-card demo issues. Logs in as
+// dev@localhost via the local /auth send-code → verify-code flow, then opens
+// each /dev/issues/DEV-N and saves a clipped PNG focused on the right sidebar.
+//
+// Run: pnpm exec node scripts/screenshot-pr-cards.mjs
+// Output: ./.screenshots/pr-card-DEV-{2..7}.png
+
+import { chromium } from "@playwright/test";
+import pg from "pg";
+import { mkdirSync } from "node:fs";
+
+const FRONTEND = process.env.FRONTEND_ORIGIN || "http://localhost:13101";
+const API = process.env.NEXT_PUBLIC_API_URL || "http://localhost:18181";
+const DB = process.env.DATABASE_URL || "postgres://multica:multica@localhost:5432/multica_multica_101?sslmode=disable";
+const EMAIL = "dev@localhost";
+const SLUG = "dev";
+const ISSUES = [2, 3, 4, 5, 6, 7];
+
+async function loginAndGetToken() {
+  const client = new pg.Client(DB);
+  await client.connect();
+  try {
+    await client.query("DELETE FROM verification_code WHERE email = $1", [EMAIL]);
+    const sendRes = await fetch(`${API}/auth/send-code`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ email: EMAIL }),
+    });
+    if (!sendRes.ok) throw new Error(`send-code: ${sendRes.status}`);
+    const row = await client.query(
+      "SELECT code FROM verification_code WHERE email=$1 AND used=FALSE AND expires_at>now() ORDER BY created_at DESC LIMIT 1",
+      [EMAIL],
+    );
+    if (row.rows.length === 0) throw new Error("no verification code");
+    const verifyRes = await fetch(`${API}/auth/verify-code`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ email: EMAIL, code: row.rows[0].code }),
+    });
+    if (!verifyRes.ok) throw new Error(`verify-code: ${verifyRes.status}`);
+    const data = await verifyRes.json();
+    return data.token;
+  } finally {
+    await client.end();
+  }
+}
+
+async function main() {
+  mkdirSync(".screenshots", { recursive: true });
+  const token = await loginAndGetToken();
+  const browser = await chromium.launch({ headless: true });
+  const ctx = await browser.newContext({ viewport: { width: 1600, height: 1200 } });
+  const page = await ctx.newPage();
+
+  // Set token before navigation so the renderer hits an authenticated state.
+  await page.goto(`${FRONTEND}/login`);
+  await page.evaluate((t) => localStorage.setItem("multica_token", t), token);
+
+  for (const n of ISSUES) {
+    const url = `${FRONTEND}/${SLUG}/issues/DEV-${n}`;
+    console.log("→", url);
+    await page.goto(url, { waitUntil: "domcontentloaded" });
+    // Wait for the PR section header to appear so the card has rendered.
+    const prSection = page.locator("text=Pull requests").first();
+    await prSection.waitFor({ timeout: 15000 }).catch(() => undefined);
+
+    // Close the floating chat widget — it overlays the right sidebar and
+    // hides exactly the area we want to capture. The minimize button has
+    // aria-label or just an icon; brute-force any chat close/minimize.
+    const closeChat = page.locator('[aria-label="Minimize" i], [aria-label="Close" i], button[title="Minimize" i]').first();
+    if (await closeChat.count()) {
+      await closeChat.click({ trial: false }).catch(() => undefined);
+    }
+    // Fallback: click on the chat header to collapse it.
+    await page.locator("text=New chat").first().click({ timeout: 1000 }).catch(() => undefined);
+
+    await page.waitForTimeout(400);
+    // Scroll the PR section into view.
+    await prSection.scrollIntoViewIfNeeded().catch(() => undefined);
+    await page.waitForTimeout(300);
+    const out = `.screenshots/pr-card-DEV-${n}.png`;
+    await page.screenshot({ path: out, fullPage: false });
+    console.log("   saved", out);
+  }
+  await browser.close();
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});
diff --git a/server/internal/handler/github.go b/server/internal/handler/github.go
index 1278f0946..ef29fc201 100644
--- a/server/internal/handler/github.go
+++ b/server/internal/handler/github.go
@@ -54,6 +54,27 @@ type GitHubPullRequestResponse struct {
 	ClosedAt        *string `json:"closed_at"`
 	PRCreatedAt     string  `json:"pr_created_at"`
 	PRUpdatedAt     string  `json:"pr_updated_at"`
+	// Mergeable state mirrors GitHub's `mergeable_state` field. We only
+	// surface `clean`/`dirty` in the UI today; other values (`blocked`,
+	// `behind`, `unstable`, `unknown`) round-trip but render as unknown.
+	MergeableState *string `json:"mergeable_state"`
+	// ChecksConclusion is the aggregated state of the latest CI check
+	// suites for the PR's current head SHA. One of "passed", "failed",
+	// "pending", or nil when no completed suite has been observed.
+	ChecksConclusion *string `json:"checks_conclusion"`
+	// Per-suite counts that drive the card's segmented progress bar.
+	// Always present on list rows; bare upsert broadcasts default to 0
+	// and the frontend hides the bar when total == 0.
+	ChecksPassed  int64 `json:"checks_passed"`
+	ChecksFailed  int64 `json:"checks_failed"`
+	ChecksPending int64 `json:"checks_pending"`
+	// Diff stats (lines added/removed and file count) sourced from the
+	// `pull_request` webhook payload. Legacy rows that pre-date this
+	// field default to 0; the frontend treats total == 0 as "unknown"
+	// and hides the stats row.
+	Additions    int32 `json:"additions"`
+	Deletions    int32 `json:"deletions"`
+	ChangedFiles int32 `json:"changed_files"`
 }
 
 type GitHubConnectResponse struct {
@@ -90,9 +111,69 @@ func githubPullRequestToResponse(p db.GithubPullRequest) GitHubPullRequestRespon
 		ClosedAt:        timestampToPtr(p.ClosedAt),
 		PRCreatedAt:     timestampToString(p.PrCreatedAt),
 		PRUpdatedAt:     timestampToString(p.PrUpdatedAt),
+		MergeableState:  textToPtr(p.MergeableState),
+		// A bare PR row has no aggregated check counts — webhook
+		// broadcasts of a single PR fall through here and the frontend
+		// re-queries the list for fresh counts.
+		ChecksConclusion: nil,
+		Additions:        p.Additions,
+		Deletions:        p.Deletions,
+		ChangedFiles:     p.ChangedFiles,
 	}
 }
 
+func issuePullRequestRowToResponse(p db.ListPullRequestsByIssueRow) GitHubPullRequestResponse {
+	return GitHubPullRequestResponse{
+		ID:               uuidToString(p.ID),
+		WorkspaceID:      uuidToString(p.WorkspaceID),
+		RepoOwner:        p.RepoOwner,
+		RepoName:         p.RepoName,
+		Number:           p.PrNumber,
+		Title:            p.Title,
+		State:            p.State,
+		HtmlURL:          p.HtmlUrl,
+		Branch:           textToPtr(p.Branch),
+		AuthorLogin:      textToPtr(p.AuthorLogin),
+		AuthorAvatarURL:  textToPtr(p.AuthorAvatarUrl),
+		MergedAt:         timestampToPtr(p.MergedAt),
+		ClosedAt:         timestampToPtr(p.ClosedAt),
+		PRCreatedAt:      timestampToString(p.PrCreatedAt),
+		PRUpdatedAt:      timestampToString(p.PrUpdatedAt),
+		MergeableState:   textToPtr(p.MergeableState),
+		ChecksConclusion: aggregateChecksConclusion(p.ChecksFailed, p.ChecksPassed, p.ChecksPending, p.ChecksTotal),
+		ChecksPassed:     p.ChecksPassed,
+		ChecksFailed:     p.ChecksFailed,
+		ChecksPending:    p.ChecksPending,
+		Additions:        p.Additions,
+		Deletions:        p.Deletions,
+		ChangedFiles:     p.ChangedFiles,
+	}
+}
+
+// aggregateChecksConclusion collapses the per-PR check_suite counts into a
+// single status surfaced to the UI:
+//   - any failed-class suite wins ("failed");
+//   - any not-yet-completed suite makes the PR "pending";
+//   - all completed and in the passed-class is "passed";
+//   - no observed suite at all is nil (rendered as "no checks" / hidden).
+func aggregateChecksConclusion(failed, passed, pending, total int64) *string {
+	if total == 0 {
+		return nil
+	}
+	var v string
+	switch {
+	case failed > 0:
+		v = "failed"
+	case pending > 0:
+		v = "pending"
+	case passed > 0:
+		v = "passed"
+	default:
+		return nil
+	}
+	return &v
+}
+
 // ── Connect / state token ───────────────────────────────────────────────────
 
 // githubAppSlug returns the GitHub App slug used to build the install URL.
@@ -350,7 +431,7 @@ func (h *Handler) ListPullRequestsForIssue(w http.ResponseWriter, r *http.Reques
 	}
 	out := make([]GitHubPullRequestResponse, 0, len(rows))
 	for _, row := range rows {
-		out = append(out, githubPullRequestToResponse(row))
+		out = append(out, issuePullRequestRowToResponse(row))
 	}
 	writeJSON(w, http.StatusOK, map[string]any{"pull_requests": out})
 }
@@ -396,6 +477,8 @@ func (h *Handler) HandleGitHubWebhook(w http.ResponseWriter, r *http.Request) {
 		h.handleInstallationEvent(ctx, body)
 	case "pull_request":
 		h.handlePullRequestEvent(ctx, body)
+	case "check_suite":
+		h.handleCheckSuiteEvent(ctx, body)
 	default:
 		// Acknowledge every event so GitHub doesn't mark the endpoint failing,
 		// but ignore types we don't model.
@@ -481,25 +564,31 @@ func (h *Handler) handleInstallationEvent(ctx context.Context, body []byte) {
 type ghPullRequestPayload struct {
 	Action      string `json:"action"`
 	PullRequest struct {
-		Number    int32  `json:"number"`
-		HTMLURL   string `json:"html_url"`
-		Title     string `json:"title"`
-		Body      string `json:"body"`
-		State     string `json:"state"`
-		Draft     bool   `json:"draft"`
-		Merged    bool   `json:"merged"`
-		MergedAt  string `json:"merged_at"`
-		ClosedAt  string `json:"closed_at"`
-		CreatedAt string `json:"created_at"`
-		UpdatedAt string `json:"updated_at"`
-		Head      struct {
+		Number         int32  `json:"number"`
+		HTMLURL        string `json:"html_url"`
+		Title          string `json:"title"`
+		Body           string `json:"body"`
+		State          string `json:"state"`
+		Draft          bool   `json:"draft"`
+		Merged         bool   `json:"merged"`
+		MergedAt       string `json:"merged_at"`
+		ClosedAt       string `json:"closed_at"`
+		CreatedAt      string `json:"created_at"`
+		UpdatedAt      string `json:"updated_at"`
+		MergeableState string `json:"mergeable_state"`
+		Additions      int32  `json:"additions"`
+		Deletions      int32  `json:"deletions"`
+		ChangedFiles   int32  `json:"changed_files"`
+		Head           struct {
 			Ref string `json:"ref"`
+			SHA string `json:"sha"`
 		} `json:"head"`
 		User struct {
 			Login     string `json:"login"`
 			AvatarURL string `json:"avatar_url"`
 		} `json:"user"`
 	} `json:"pull_request"`
+	Changes *ghPRChanges `json:"changes"`
 	Repository struct {
 		Name  string `json:"name"`
 		Owner struct {
@@ -531,22 +620,29 @@ func (h *Handler) handlePullRequestEvent(ctx context.Context, body []byte) {
 	}
 
 	state := derivePRState(p.PullRequest.State, p.PullRequest.Draft, p.PullRequest.Merged)
+	mergeable, clearMergeable := derivePRMergeableState(p.Action, p.PullRequest.MergeableState, baseRefChanged(p.Changes))
 	pr, err := h.Queries.UpsertGitHubPullRequest(ctx, db.UpsertGitHubPullRequestParams{
-		WorkspaceID:      inst.WorkspaceID,
-		InstallationID:   inst.InstallationID,
-		RepoOwner:        p.Repository.Owner.Login,
-		RepoName:         p.Repository.Name,
-		PrNumber:         p.PullRequest.Number,
-		Title:            p.PullRequest.Title,
-		State:            state,
-		HtmlUrl:          p.PullRequest.HTMLURL,
-		Branch:           ptrToText(strPtrOrNil(p.PullRequest.Head.Ref)),
-		AuthorLogin:      ptrToText(strPtrOrNil(p.PullRequest.User.Login)),
-		AuthorAvatarUrl:  ptrToText(strPtrOrNil(p.PullRequest.User.AvatarURL)),
-		MergedAt:         parseGHTime(p.PullRequest.MergedAt),
-		ClosedAt:         parseGHTime(p.PullRequest.ClosedAt),
-		PrCreatedAt:      parseGHTimeRequired(p.PullRequest.CreatedAt),
-		PrUpdatedAt:      parseGHTimeRequired(p.PullRequest.UpdatedAt),
+		WorkspaceID:           inst.WorkspaceID,
+		InstallationID:        inst.InstallationID,
+		RepoOwner:             p.Repository.Owner.Login,
+		RepoName:              p.Repository.Name,
+		PrNumber:              p.PullRequest.Number,
+		Title:                 p.PullRequest.Title,
+		State:                 state,
+		HtmlUrl:               p.PullRequest.HTMLURL,
+		Branch:                ptrToText(strPtrOrNil(p.PullRequest.Head.Ref)),
+		AuthorLogin:           ptrToText(strPtrOrNil(p.PullRequest.User.Login)),
+		AuthorAvatarUrl:       ptrToText(strPtrOrNil(p.PullRequest.User.AvatarURL)),
+		MergedAt:              parseGHTime(p.PullRequest.MergedAt),
+		ClosedAt:              parseGHTime(p.PullRequest.ClosedAt),
+		PrCreatedAt:           parseGHTimeRequired(p.PullRequest.CreatedAt),
+		PrUpdatedAt:           parseGHTimeRequired(p.PullRequest.UpdatedAt),
+		HeadSha:               p.PullRequest.Head.SHA,
+		MergeableState:        mergeable,
+		ClearMergeableState:   pgtype.Bool{Bool: clearMergeable, Valid: true},
+		Additions:             p.PullRequest.Additions,
+		Deletions:             p.PullRequest.Deletions,
+		ChangedFiles:          p.PullRequest.ChangedFiles,
 	})
 	if err != nil {
 		slog.Warn("github: upsert pr failed", "err", err)
@@ -611,6 +707,184 @@ func (h *Handler) handlePullRequestEvent(ctx context.Context, body []byte) {
 	})
 }
 
+// ── check_suite webhook ────────────────────────────────────────────────────
+
+type ghCheckSuitePayload struct {
+	Action     string `json:"action"`
+	CheckSuite struct {
+		ID         int64  `json:"id"`
+		HeadSHA    string `json:"head_sha"`
+		Status     string `json:"status"`
+		Conclusion string `json:"conclusion"`
+		UpdatedAt  string `json:"updated_at"`
+		App        struct {
+			ID int64 `json:"id"`
+		} `json:"app"`
+		PullRequests []struct {
+			Number int32 `json:"number"`
+		} `json:"pull_requests"`
+	} `json:"check_suite"`
+	Repository struct {
+		Name  string `json:"name"`
+		Owner struct {
+			Login string `json:"login"`
+		} `json:"owner"`
+	} `json:"repository"`
+	Installation struct {
+		ID int64 `json:"id"`
+	} `json:"installation"`
+}
+
+// handleCheckSuiteEvent records the CI suite state for each PR the suite
+// references. MVP only persists terminal events (`completed`); GitHub sends
+// `requested`/`rerequested` for some apps but those carry no useful
+// conclusion and the RFC restricts us to suite-level aggregation.
+//
+// The suite payload may reference multiple PRs (e.g. the same head SHA is
+// open against several base branches), so we iterate. A reference whose PR
+// hasn't been mirrored locally is logged and skipped — auto-backfill from
+// GitHub's REST API is a v2 enhancement.
+func (h *Handler) handleCheckSuiteEvent(ctx context.Context, body []byte) {
+	var p ghCheckSuitePayload
+	if err := json.Unmarshal(body, &p); err != nil {
+		slog.Warn("github: bad check_suite payload", "err", err)
+		return
+	}
+	if p.Action != "completed" {
+		// MVP scope: only completed suites carry a conclusion we can
+		// surface. queued / in_progress events would feed a future
+		// "real pending" display path.
+		return
+	}
+	if p.Installation.ID == 0 {
+		return
+	}
+	inst, err := h.Queries.GetGitHubInstallationByInstallationID(ctx, p.Installation.ID)
+	if err != nil {
+		if !errors.Is(err, pgx.ErrNoRows) {
+			slog.Warn("github: lookup installation failed", "err", err)
+		}
+		return
+	}
+	if len(p.CheckSuite.PullRequests) == 0 {
+		// Forks emit suites whose `pull_requests` array is empty for
+		// the upstream repo. We have no way to attribute the result
+		// without polling, so drop with a hint.
+		slog.Info("github: check_suite has no associated PRs", "suite_id", p.CheckSuite.ID)
+		return
+	}
+	updatedAt := parseGHTimeRequired(p.CheckSuite.UpdatedAt)
+
+	affectedWorkspaces := map[string]struct{}{}
+	affectedIssues := map[string]struct{}{}
+	for _, prRef := range p.CheckSuite.PullRequests {
+		// Scope the lookup to the installation's workspace. The
+		// (workspace_id, repo_owner, repo_name, pr_number) tuple is the
+		// real uniqueness key: if the same repo lived under a different
+		// workspace historically, a bare (owner, repo, number) lookup
+		// could return either row arbitrarily and land this suite on
+		// the wrong PR (or skip the right one because the installation
+		// ids no longer match).
+		pr, err := h.Queries.GetGitHubPullRequest(ctx, db.GetGitHubPullRequestParams{
+			WorkspaceID: inst.WorkspaceID,
+			RepoOwner:   p.Repository.Owner.Login,
+			RepoName:    p.Repository.Name,
+			PrNumber:    prRef.Number,
+		})
+		if err != nil {
+			if !errors.Is(err, pgx.ErrNoRows) {
+				slog.Warn("github: lookup pr for check_suite failed", "err", err)
+			}
+			slog.Info("github: check_suite for unknown PR — skipping",
+				"repo", p.Repository.Owner.Login+"/"+p.Repository.Name,
+				"pr", prRef.Number,
+				"suite_id", p.CheckSuite.ID,
+			)
+			continue
+		}
+		if err := h.Queries.UpsertPullRequestCheckSuite(ctx, db.UpsertPullRequestCheckSuiteParams{
+			PrID:       pr.ID,
+			SuiteID:    p.CheckSuite.ID,
+			HeadSha:    p.CheckSuite.HeadSHA,
+			AppID:      p.CheckSuite.App.ID,
+			Conclusion: strToText(p.CheckSuite.Conclusion),
+			Status:     p.CheckSuite.Status,
+			UpdatedAt:  updatedAt,
+		}); err != nil {
+			slog.Warn("github: upsert check_suite failed", "err", err, "suite_id", p.CheckSuite.ID)
+			continue
+		}
+		affectedWorkspaces[uuidToString(pr.WorkspaceID)] = struct{}{}
+		issues, err := h.Queries.ListIssueIDsForPullRequest(ctx, pr.ID)
+		if err == nil {
+			for _, id := range issues {
+				affectedIssues[uuidToString(id)] = struct{}{}
+			}
+		}
+	}
+
+	// Broadcast on the existing event so the issue page just re-queries
+	// the PR list. We don't pass a single pull_request payload here
+	// because a suite can touch several and the listener already
+	// invalidates by issue.
+	for ws := range affectedWorkspaces {
+		linked := make([]string, 0, len(affectedIssues))
+		for id := range affectedIssues {
+			linked = append(linked, id)
+		}
+		h.publish(protocol.EventPullRequestUpdated, ws, "system", "", map[string]any{
+			"linked_issue_ids": linked,
+		})
+	}
+}
+
+// derivePRMergeableState resolves the upsert behaviour for the PR row's
+// mergeable_state column on a `pull_request` webhook. It returns three
+// states encoded as (value, clear):
+//
+//   - clear=true → force the column to NULL. State-changing actions (`opened`,
+//     `synchronize`, `reopened`, or a base-branch swap) must blank the value
+//     because GitHub re-computes mergeability asynchronously; the payload may
+//     still carry the previous head's clean/dirty answer, and trusting it
+//     would surface a stale verdict against the new head.
+//   - clear=false, value valid → write the value. The event carried a
+//     concrete verdict we should persist.
+//   - clear=false, value invalid → preserve the existing column. Metadata
+//     events (labeled/assigned/edited-without-base-swap) ship pull_request
+//     payloads with mergeable_state empty even when the previous verdict is
+//     still accurate, and silently overwriting clean/dirty with NULL would
+//     drop information GitHub only refreshes lazily.
+func derivePRMergeableState(action, payload string, baseRefChanged bool) (pgtype.Text, bool) {
+	if action == "opened" || action == "synchronize" || action == "reopened" {
+		return pgtype.Text{}, true
+	}
+	if action == "edited" && baseRefChanged {
+		return pgtype.Text{}, true
+	}
+	if payload == "" {
+		return pgtype.Text{}, false
+	}
+	return pgtype.Text{String: payload, Valid: true}, false
+}
+
+// ghPRChanges captures the only field of `pull_request.edited`'s `changes`
+// payload we care about: a base-branch swap. Everything else (title, body)
+// leaves mergeability intact.
+type ghPRChanges struct {
+	Base *struct {
+		Ref *struct {
+			From string `json:"from"`
+		} `json:"ref"`
+	} `json:"base"`
+}
+
+// baseRefChanged returns true when a pull_request.edited event indicates the
+// PR's base branch was swapped. Only this kind of edit invalidates the
+// existing mergeable_state.
+func baseRefChanged(c *ghPRChanges) bool {
+	return c != nil && c.Base != nil && c.Base.Ref != nil && c.Base.Ref.From != ""
+}
+
 func derivePRState(state string, draft, merged bool) string {
 	if merged {
 		return "merged"
diff --git a/server/internal/handler/github_test.go b/server/internal/handler/github_test.go
index b33605e7b..2f31017c7 100644
--- a/server/internal/handler/github_test.go
+++ b/server/internal/handler/github_test.go
@@ -11,6 +11,7 @@ import (
 	"net/http/httptest"
 	"reflect"
 	"testing"
+	"time"
 
 	db "github.com/multica-ai/multica/server/pkg/db/generated"
 )
@@ -670,3 +671,370 @@ func TestWebhook_AllClosedWithoutMerge(t *testing.T) {
 		t.Errorf("issue must stay in_progress when no linked PR ever merged, got %q", final.Status)
 	}
 }
+
+// ── CI / mergeable_state tests ─────────────────────────────────────────────
+
+func TestDerivePRMergeableState(t *testing.T) {
+	cases := []struct {
+		name           string
+		action         string
+		payload        string
+		baseRefChanged bool
+		wantValid      bool
+		wantStr        string
+		wantClear      bool
+	}{
+		{"opened_clears", "opened", "clean", false, false, "", true},
+		{"synchronize_clears", "synchronize", "clean", false, false, "", true},
+		{"reopened_clears", "reopened", "dirty", false, false, "", true},
+		{"edited_base_changed_clears", "edited", "clean", true, false, "", true},
+		{"edited_title_only_keeps_value", "edited", "clean", false, true, "clean", false},
+		{"labeled_keeps_value", "labeled", "clean", false, true, "clean", false},
+		{"labeled_empty_payload_preserves", "labeled", "", false, false, "", false},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			got, clear := derivePRMergeableState(tc.action, tc.payload, tc.baseRefChanged)
+			if got.Valid != tc.wantValid {
+				t.Errorf("Valid=%v want %v", got.Valid, tc.wantValid)
+			}
+			if got.String != tc.wantStr {
+				t.Errorf("String=%q want %q", got.String, tc.wantStr)
+			}
+			if clear != tc.wantClear {
+				t.Errorf("clear=%v want %v", clear, tc.wantClear)
+			}
+		})
+	}
+}
+
+func TestAggregateChecksConclusion(t *testing.T) {
+	str := func(p *string) string {
+		if p == nil {
+			return "<nil>"
+		}
+		return *p
+	}
+	cases := []struct {
+		name                            string
+		failed, passed, pending, total int64
+		want                            string
+	}{
+		{"no_suites_nil", 0, 0, 0, 0, "<nil>"},
+		{"any_failure_wins", 1, 5, 0, 6, "failed"},
+		{"failure_beats_pending", 1, 0, 3, 4, "failed"},
+		{"pending_when_no_failure", 0, 1, 2, 3, "pending"},
+		{"all_passed", 0, 3, 0, 3, "passed"},
+		{"counts_zero_but_total_nonzero_returns_nil", 0, 0, 0, 1, "<nil>"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			got := aggregateChecksConclusion(tc.failed, tc.passed, tc.pending, tc.total)
+			if str(got) != tc.want {
+				t.Errorf("aggregateChecksConclusion = %s, want %s", str(got), tc.want)
+			}
+		})
+	}
+}
+
+// firePullRequestWebhookWithHead is like firePullRequestWebhook but lets the
+// caller control the head SHA and mergeable_state on the payload. The CI
+// tests need both knobs to exercise head-change semantics.
+func firePullRequestWebhookWithHead(t *testing.T, secret, identifier string, installationID int64, repo string, prNumber int32, action, headSHA, mergeableState string) {
+	t.Helper()
+	payload := map[string]any{
+		"action": action,
+		"pull_request": map[string]any{
+			"number":          prNumber,
+			"html_url":        "https://github.com/acme/" + repo + "/pull/1",
+			"title":           "Fix " + identifier,
+			"body":            "",
+			"state":           "open",
+			"draft":           false,
+			"merged":          false,
+			"merged_at":       nil,
+			"closed_at":       nil,
+			"created_at":      "2026-04-28T00:00:00Z",
+			"updated_at":      "2026-04-29T00:00:00Z",
+			"mergeable_state": mergeableState,
+			"head":            map[string]any{"ref": "fix/foo", "sha": headSHA},
+			"user":            map[string]any{"login": "octocat"},
+		},
+		"repository": map[string]any{
+			"name":  repo,
+			"owner": map[string]any{"login": "acme"},
+		},
+		"installation": map[string]any{"id": installationID},
+	}
+	raw, _ := json.Marshal(payload)
+	mac := hmac.New(sha256.New, []byte(secret))
+	mac.Write(raw)
+	sig := "sha256=" + hex.EncodeToString(mac.Sum(nil))
+
+	rec := httptest.NewRecorder()
+	hookReq := httptest.NewRequest("POST", "/api/webhooks/github", bytes.NewReader(raw))
+	hookReq.Header.Set("X-GitHub-Event", "pull_request")
+	hookReq.Header.Set("X-Hub-Signature-256", sig)
+	testHandler.HandleGitHubWebhook(rec, hookReq)
+	if rec.Code != http.StatusAccepted {
+		t.Fatalf("webhook %s pr=%d action=%s: expected 202, got %d (%s)",
+			repo, prNumber, action, rec.Code, rec.Body.String())
+	}
+}
+
+func fireCheckSuiteWebhook(t *testing.T, secret string, installationID int64, repo string, prNumbers []int32, suiteID, appID int64, headSHA, conclusion, updatedAt string) {
+	t.Helper()
+	prRefs := make([]map[string]any, 0, len(prNumbers))
+	for _, n := range prNumbers {
+		prRefs = append(prRefs, map[string]any{"number": n})
+	}
+	payload := map[string]any{
+		"action": "completed",
+		"check_suite": map[string]any{
+			"id":            suiteID,
+			"head_sha":      headSHA,
+			"status":        "completed",
+			"conclusion":    conclusion,
+			"updated_at":    updatedAt,
+			"app":           map[string]any{"id": appID},
+			"pull_requests": prRefs,
+		},
+		"repository": map[string]any{
+			"name":  repo,
+			"owner": map[string]any{"login": "acme"},
+		},
+		"installation": map[string]any{"id": installationID},
+	}
+	raw, _ := json.Marshal(payload)
+	mac := hmac.New(sha256.New, []byte(secret))
+	mac.Write(raw)
+	sig := "sha256=" + hex.EncodeToString(mac.Sum(nil))
+
+	rec := httptest.NewRecorder()
+	hookReq := httptest.NewRequest("POST", "/api/webhooks/github", bytes.NewReader(raw))
+	hookReq.Header.Set("X-GitHub-Event", "check_suite")
+	hookReq.Header.Set("X-Hub-Signature-256", sig)
+	testHandler.HandleGitHubWebhook(rec, hookReq)
+	if rec.Code != http.StatusAccepted {
+		t.Fatalf("check_suite webhook: expected 202, got %d (%s)", rec.Code, rec.Body.String())
+	}
+}
+
+func setupPRTestIssue(t *testing.T, ctx context.Context, secret string) (IssueResponse, int64) {
+	t.Helper()
+	t.Setenv("GITHUB_WEBHOOK_SECRET", secret)
+	w := httptest.NewRecorder()
+	req := newRequest("POST", "/api/issues?workspace_id="+testWorkspaceID, map[string]any{
+		"title":  "PR CI test",
+		"status": "in_progress",
+	})
+	testHandler.CreateIssue(w, req)
+	if w.Code != http.StatusCreated {
+		t.Fatalf("CreateIssue: %d %s", w.Code, w.Body.String())
+	}
+	var created IssueResponse
+	json.NewDecoder(w.Body).Decode(&created)
+
+	installationID := int64(33445566) + int64(time.Now().UnixNano()%1000000)
+	t.Cleanup(func() {
+		testPool.Exec(ctx, `DELETE FROM github_pull_request_check_suite WHERE pr_id IN (SELECT id FROM github_pull_request WHERE workspace_id = $1)`, testWorkspaceID)
+		testPool.Exec(ctx, `DELETE FROM issue_pull_request WHERE issue_id = $1`, created.ID)
+		testPool.Exec(ctx, `DELETE FROM github_pull_request WHERE workspace_id = $1`, testWorkspaceID)
+		testPool.Exec(ctx, `DELETE FROM github_installation WHERE installation_id = $1`, installationID)
+		testPool.Exec(ctx, `DELETE FROM activity_log WHERE issue_id = $1`, created.ID)
+		testPool.Exec(ctx, `DELETE FROM issue WHERE id = $1`, created.ID)
+	})
+	if _, err := testHandler.Queries.CreateGitHubInstallation(ctx, db.CreateGitHubInstallationParams{
+		WorkspaceID:    parseUUID(testWorkspaceID),
+		InstallationID: installationID,
+		AccountLogin:   "ci-acct",
+		AccountType:    "User",
+	}); err != nil {
+		t.Fatalf("CreateGitHubInstallation: %v", err)
+	}
+	return created, installationID
+}
+
+// TestWebhook_CheckSuite_AggregatesAcrossApps ensures the list query reports
+// "failed" when one app's latest suite is a failure and another app's is a
+// success on the same head. Without per-app aggregation, the last-completed
+// suite would silently flip the verdict.
+func TestWebhook_CheckSuite_AggregatesAcrossApps(t *testing.T) {
+	if testHandler == nil {
+		t.Skip("handler test fixture not initialized (no DB?)")
+	}
+	ctx := context.Background()
+	const secret = "ci-aggregate-secret"
+	created, installationID := setupPRTestIssue(t, ctx, secret)
+
+	head := "abc1234567890"
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-a", 11, "opened", head, "")
+	// App A → success, App B → failure. The list query must report failed.
+	fireCheckSuiteWebhook(t, secret, installationID, "ci-repo-a", []int32{11}, 1001, 7001, head, "success", "2026-05-01T00:00:00Z")
+	fireCheckSuiteWebhook(t, secret, installationID, "ci-repo-a", []int32{11}, 1002, 7002, head, "failure", "2026-05-01T00:01:00Z")
+
+	rows, err := testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("expected 1 PR row, got %d", len(rows))
+	}
+	got := aggregateChecksConclusion(rows[0].ChecksFailed, rows[0].ChecksPassed, rows[0].ChecksPending, rows[0].ChecksTotal)
+	if got == nil || *got != "failed" {
+		t.Errorf("expected aggregate failed, got %v (counts: failed=%d passed=%d pending=%d total=%d)",
+			got, rows[0].ChecksFailed, rows[0].ChecksPassed, rows[0].ChecksPending, rows[0].ChecksTotal)
+	}
+}
+
+// TestWebhook_CheckSuite_OldHeadIgnored asserts that a late-arriving
+// check_suite for a stale head SHA doesn't contaminate the current head's
+// pending view. Without the head_sha filter in the aggregation query, the
+// new head would inherit the old head's "passed" verdict.
+func TestWebhook_CheckSuite_OldHeadIgnored(t *testing.T) {
+	if testHandler == nil {
+		t.Skip("handler test fixture not initialized (no DB?)")
+	}
+	ctx := context.Background()
+	const secret = "ci-oldhead-secret"
+	created, installationID := setupPRTestIssue(t, ctx, secret)
+
+	oldHead := "old1111111111"
+	newHead := "new2222222222"
+
+	// First: open the PR at old head, run a passing suite.
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-b", 22, "opened", oldHead, "")
+	fireCheckSuiteWebhook(t, secret, installationID, "ci-repo-b", []int32{22}, 2001, 8001, oldHead, "success", "2026-05-01T00:00:00Z")
+
+	rows, err := testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	got := aggregateChecksConclusion(rows[0].ChecksFailed, rows[0].ChecksPassed, rows[0].ChecksPending, rows[0].ChecksTotal)
+	if got == nil || *got != "passed" {
+		t.Fatalf("setup: expected passed on old head, got %v", got)
+	}
+
+	// Then: synchronize to new head — no new suite yet. Then a late suite
+	// for the OLD head fires (e.g. a delayed delivery). The current aggregate
+	// must be nil (no suite for the new head).
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-b", 22, "synchronize", newHead, "")
+	fireCheckSuiteWebhook(t, secret, installationID, "ci-repo-b", []int32{22}, 2002, 8001, oldHead, "success", "2026-05-01T00:05:00Z")
+
+	rows, err = testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	got = aggregateChecksConclusion(rows[0].ChecksFailed, rows[0].ChecksPassed, rows[0].ChecksPending, rows[0].ChecksTotal)
+	if got != nil {
+		t.Errorf("expected no aggregate (nil) after head change, got %v", got)
+	}
+}
+
+// TestWebhook_CheckSuite_LateOlderEventIgnored guards the single-row ordering
+// rule: for the same (pr_id, suite_id) the upsert must not let a later-
+// delivered older event overwrite the latest one. We send the newer state
+// (failure) first and then the older (success) and assert the row still
+// reads failure.
+func TestWebhook_CheckSuite_LateOlderEventIgnored(t *testing.T) {
+	if testHandler == nil {
+		t.Skip("handler test fixture not initialized (no DB?)")
+	}
+	ctx := context.Background()
+	const secret = "ci-ordering-secret"
+	created, installationID := setupPRTestIssue(t, ctx, secret)
+
+	head := "ord1234567890"
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-c", 33, "opened", head, "")
+	// Latest event first.
+	fireCheckSuiteWebhook(t, secret, installationID, "ci-repo-c", []int32{33}, 3001, 9001, head, "failure", "2026-05-01T01:00:00Z")
+	// Late-arriving older event for the same suite.
+	fireCheckSuiteWebhook(t, secret, installationID, "ci-repo-c", []int32{33}, 3001, 9001, head, "success", "2026-05-01T00:00:00Z")
+
+	rows, err := testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	got := aggregateChecksConclusion(rows[0].ChecksFailed, rows[0].ChecksPassed, rows[0].ChecksPending, rows[0].ChecksTotal)
+	if got == nil || *got != "failed" {
+		t.Errorf("expected failure to win against later-delivered older success, got %v", got)
+	}
+}
+
+// TestWebhook_PullRequest_SynchronizeClearsMergeable verifies that
+// `synchronize` sets mergeable_state to NULL even when the payload still
+// carries the previous "clean" verdict — the old answer no longer applies
+// to the new head SHA.
+func TestWebhook_PullRequest_SynchronizeClearsMergeable(t *testing.T) {
+	if testHandler == nil {
+		t.Skip("handler test fixture not initialized (no DB?)")
+	}
+	ctx := context.Background()
+	const secret = "ci-mergeable-secret"
+	created, installationID := setupPRTestIssue(t, ctx, secret)
+
+	// Open with no mergeable verdict, then a metadata event populates clean.
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-d", 44, "opened", "head1", "")
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-d", 44, "labeled", "head1", "clean")
+
+	rows, err := testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	if !rows[0].MergeableState.Valid || rows[0].MergeableState.String != "clean" {
+		t.Fatalf("setup: expected mergeable_state=clean, got %+v", rows[0].MergeableState)
+	}
+
+	// Synchronize — payload still claims clean, but we must blank it.
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-d", 44, "synchronize", "head2", "clean")
+
+	rows, err = testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	if rows[0].MergeableState.Valid {
+		t.Errorf("expected mergeable_state cleared on synchronize, got %q", rows[0].MergeableState.String)
+	}
+	if rows[0].HeadSha != "head2" {
+		t.Errorf("expected head_sha updated to head2, got %q", rows[0].HeadSha)
+	}
+}
+
+// TestWebhook_PullRequest_MetadataPreservesMergeable verifies that a
+// metadata-only event (labeled/assigned/edited-without-base-swap) whose
+// payload omits mergeable_state does NOT clobber an existing clean/dirty
+// verdict. GitHub re-computes mergeability lazily and metadata events ship
+// with the field empty even when the previous verdict is still accurate;
+// silently overwriting it with NULL would drop a real signal.
+func TestWebhook_PullRequest_MetadataPreservesMergeable(t *testing.T) {
+	if testHandler == nil {
+		t.Skip("handler test fixture not initialized (no DB?)")
+	}
+	ctx := context.Background()
+	const secret = "ci-mergeable-preserve-secret"
+	created, installationID := setupPRTestIssue(t, ctx, secret)
+
+	// Open, then set a known verdict via a labeled event carrying clean.
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-e", 55, "opened", "headA", "")
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-e", 55, "labeled", "headA", "clean")
+
+	rows, err := testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	if !rows[0].MergeableState.Valid || rows[0].MergeableState.String != "clean" {
+		t.Fatalf("setup: expected mergeable_state=clean, got %+v", rows[0].MergeableState)
+	}
+
+	// A second labeled event arrives with mergeable_state empty (typical for
+	// metadata events). The existing clean must survive.
+	firePullRequestWebhookWithHead(t, secret, created.Identifier, installationID, "ci-repo-e", 55, "labeled", "headA", "")
+
+	rows, err = testHandler.Queries.ListPullRequestsByIssue(ctx, parseUUID(created.ID))
+	if err != nil {
+		t.Fatalf("ListPullRequestsByIssue: %v", err)
+	}
+	if !rows[0].MergeableState.Valid || rows[0].MergeableState.String != "clean" {
+		t.Errorf("expected mergeable_state preserved as clean after metadata event, got %+v", rows[0].MergeableState)
+	}
+}
diff --git a/server/migrations/091_pr_ci_conflict.down.sql b/server/migrations/091_pr_ci_conflict.down.sql
new file mode 100644
index 000000000..d970ab0a1
--- /dev/null
+++ b/server/migrations/091_pr_ci_conflict.down.sql
@@ -0,0 +1,6 @@
+DROP INDEX IF EXISTS idx_github_pr_check_suite_aggregate;
+DROP TABLE IF EXISTS github_pull_request_check_suite;
+
+ALTER TABLE github_pull_request
+    DROP COLUMN IF EXISTS mergeable_state,
+    DROP COLUMN IF EXISTS head_sha;
diff --git a/server/migrations/091_pr_ci_conflict.up.sql b/server/migrations/091_pr_ci_conflict.up.sql
new file mode 100644
index 000000000..8fbb05bd7
--- /dev/null
+++ b/server/migrations/091_pr_ci_conflict.up.sql
@@ -0,0 +1,22 @@
+-- PR CI checks + merge conflict status. Adds head_sha + mergeable_state to
+-- github_pull_request, plus a per-check_suite table whose rows are filtered
+-- by the PR's current head_sha at query time. This lets late-arriving suites
+-- for an old head SHA land in the table without polluting the current view.
+
+ALTER TABLE github_pull_request
+    ADD COLUMN head_sha TEXT NOT NULL DEFAULT '',
+    ADD COLUMN mergeable_state TEXT;
+
+CREATE TABLE github_pull_request_check_suite (
+    pr_id        UUID NOT NULL REFERENCES github_pull_request(id) ON DELETE CASCADE,
+    suite_id     BIGINT NOT NULL,
+    head_sha     TEXT NOT NULL,
+    app_id       BIGINT NOT NULL,
+    conclusion   TEXT,
+    status       TEXT NOT NULL,
+    updated_at   TIMESTAMPTZ NOT NULL,
+    PRIMARY KEY (pr_id, suite_id)
+);
+
+CREATE INDEX idx_github_pr_check_suite_aggregate
+    ON github_pull_request_check_suite (pr_id, head_sha, app_id, updated_at DESC);
diff --git a/server/migrations/092_pr_stats.down.sql b/server/migrations/092_pr_stats.down.sql
new file mode 100644
index 000000000..31d062926
--- /dev/null
+++ b/server/migrations/092_pr_stats.down.sql
@@ -0,0 +1,4 @@
+ALTER TABLE github_pull_request
+    DROP COLUMN IF EXISTS changed_files,
+    DROP COLUMN IF EXISTS deletions,
+    DROP COLUMN IF EXISTS additions;
diff --git a/server/migrations/092_pr_stats.up.sql b/server/migrations/092_pr_stats.up.sql
new file mode 100644
index 000000000..6d6080927
--- /dev/null
+++ b/server/migrations/092_pr_stats.up.sql
@@ -0,0 +1,12 @@
+-- PR diff stats (additions / deletions / changed_files) for the card layout.
+-- Source: top-level `pull_request` object on every pull_request webhook event
+-- (opened / synchronize / edited / labeled / ...). NOT NULL DEFAULT 0 means
+-- legacy rows that pre-date this migration read as zero, which the frontend
+-- detects via `total === 0` and hides the entire stats row — so the card never
+-- renders a misleading "+0 −0 · 0 files" caption for rows that just haven't
+-- been refreshed by a webhook yet.
+
+ALTER TABLE github_pull_request
+    ADD COLUMN additions     INT NOT NULL DEFAULT 0,
+    ADD COLUMN deletions     INT NOT NULL DEFAULT 0,
+    ADD COLUMN changed_files INT NOT NULL DEFAULT 0;
diff --git a/server/pkg/db/generated/github.sql.go b/server/pkg/db/generated/github.sql.go
index 0b6a968fa..0246c4a13 100644
--- a/server/pkg/db/generated/github.sql.go
+++ b/server/pkg/db/generated/github.sql.go
@@ -136,7 +136,7 @@ func (q *Queries) GetGitHubInstallationByInstallationID(ctx context.Context, ins
 }
 
 const getGitHubPullRequest = `-- name: GetGitHubPullRequest :one
-SELECT id, workspace_id, installation_id, repo_owner, repo_name, pr_number, title, state, html_url, branch, author_login, author_avatar_url, merged_at, closed_at, pr_created_at, pr_updated_at, created_at, updated_at FROM github_pull_request
+SELECT id, workspace_id, installation_id, repo_owner, repo_name, pr_number, title, state, html_url, branch, author_login, author_avatar_url, merged_at, closed_at, pr_created_at, pr_updated_at, created_at, updated_at, head_sha, mergeable_state, additions, deletions, changed_files FROM github_pull_request
 WHERE workspace_id = $1 AND repo_owner = $2 AND repo_name = $3 AND pr_number = $4
 `
 
@@ -174,6 +174,11 @@ func (q *Queries) GetGitHubPullRequest(ctx context.Context, arg GetGitHubPullReq
 		&i.PrUpdatedAt,
 		&i.CreatedAt,
 		&i.UpdatedAt,
+		&i.HeadSha,
+		&i.MergeableState,
+		&i.Additions,
+		&i.Deletions,
+		&i.ChangedFiles,
 	)
 	return i, err
 }
@@ -307,22 +312,101 @@ func (q *Queries) ListIssueIDsForPullRequest(ctx context.Context, pullRequestID
 }
 
 const listPullRequestsByIssue = `-- name: ListPullRequestsByIssue :many
-SELECT pr.id, pr.workspace_id, pr.installation_id, pr.repo_owner, pr.repo_name, pr.pr_number, pr.title, pr.state, pr.html_url, pr.branch, pr.author_login, pr.author_avatar_url, pr.merged_at, pr.closed_at, pr.pr_created_at, pr.pr_updated_at, pr.created_at, pr.updated_at
+WITH issue_prs AS (
+    SELECT pr.id, pr.head_sha
+    FROM github_pull_request pr
+    JOIN issue_pull_request ipr ON ipr.pull_request_id = pr.id
+    WHERE ipr.issue_id = $1
+),
+per_app_latest AS (
+    SELECT DISTINCT ON (cs.pr_id, cs.app_id)
+        cs.pr_id, cs.app_id, cs.conclusion, cs.status
+    FROM github_pull_request_check_suite cs
+    JOIN issue_prs ip ON ip.id = cs.pr_id
+    WHERE cs.head_sha = ip.head_sha AND ip.head_sha <> ''
+    ORDER BY cs.pr_id, cs.app_id, cs.updated_at DESC
+),
+checks AS (
+    SELECT
+        pr_id,
+        COUNT(*)::bigint AS total,
+        SUM(CASE WHEN status = 'completed' AND conclusion IN
+                ('failure','cancelled','timed_out','action_required','startup_failure','stale')
+            THEN 1 ELSE 0 END)::bigint AS failed,
+        SUM(CASE WHEN status = 'completed' AND conclusion IN
+                ('success','neutral','skipped')
+            THEN 1 ELSE 0 END)::bigint AS passed,
+        SUM(CASE WHEN status <> 'completed' OR conclusion IS NULL
+            THEN 1 ELSE 0 END)::bigint AS pending
+    FROM per_app_latest
+    GROUP BY pr_id
+)
+SELECT
+    pr.id, pr.workspace_id, pr.installation_id, pr.repo_owner, pr.repo_name,
+    pr.pr_number, pr.title, pr.state, pr.html_url, pr.branch, pr.author_login,
+    pr.author_avatar_url, pr.merged_at, pr.closed_at, pr.pr_created_at,
+    pr.pr_updated_at, pr.head_sha, pr.mergeable_state,
+    pr.additions, pr.deletions, pr.changed_files,
+    pr.created_at, pr.updated_at,
+    COALESCE(c.total, 0)::bigint   AS checks_total,
+    COALESCE(c.passed, 0)::bigint  AS checks_passed,
+    COALESCE(c.failed, 0)::bigint  AS checks_failed,
+    COALESCE(c.pending, 0)::bigint AS checks_pending
 FROM github_pull_request pr
 JOIN issue_pull_request ipr ON ipr.pull_request_id = pr.id
+LEFT JOIN checks c ON c.pr_id = pr.id
 WHERE ipr.issue_id = $1
 ORDER BY pr.pr_created_at DESC
 `
 
-func (q *Queries) ListPullRequestsByIssue(ctx context.Context, issueID pgtype.UUID) ([]GithubPullRequest, error) {
+type ListPullRequestsByIssueRow struct {
+	ID              pgtype.UUID        `json:"id"`
+	WorkspaceID     pgtype.UUID        `json:"workspace_id"`
+	InstallationID  int64              `json:"installation_id"`
+	RepoOwner       string             `json:"repo_owner"`
+	RepoName        string             `json:"repo_name"`
+	PrNumber        int32              `json:"pr_number"`
+	Title           string             `json:"title"`
+	State           string             `json:"state"`
+	HtmlUrl         string             `json:"html_url"`
+	Branch          pgtype.Text        `json:"branch"`
+	AuthorLogin     pgtype.Text        `json:"author_login"`
+	AuthorAvatarUrl pgtype.Text        `json:"author_avatar_url"`
+	MergedAt        pgtype.Timestamptz `json:"merged_at"`
+	ClosedAt        pgtype.Timestamptz `json:"closed_at"`
+	PrCreatedAt     pgtype.Timestamptz `json:"pr_created_at"`
+	PrUpdatedAt     pgtype.Timestamptz `json:"pr_updated_at"`
+	HeadSha         string             `json:"head_sha"`
+	MergeableState  pgtype.Text        `json:"mergeable_state"`
+	Additions       int32              `json:"additions"`
+	Deletions       int32              `json:"deletions"`
+	ChangedFiles    int32              `json:"changed_files"`
+	CreatedAt       pgtype.Timestamptz `json:"created_at"`
+	UpdatedAt       pgtype.Timestamptz `json:"updated_at"`
+	ChecksTotal     int64              `json:"checks_total"`
+	ChecksPassed    int64              `json:"checks_passed"`
+	ChecksFailed    int64              `json:"checks_failed"`
+	ChecksPending   int64              `json:"checks_pending"`
+}
+
+// Returns the issue's linked PRs with the aggregated check-suite counts for
+// the PR's CURRENT head SHA. The `issue_prs` CTE narrows to this issue's PR
+// ids first so the per-app aggregation only touches suite rows for those
+// PRs — without that scoping the planner has to scan/aggregate every PR's
+// suites in the workspace before joining on issue. Per-app latest suite is
+// selected so a single app firing multiple suites on the same head doesn't
+// get counted N times. Late-arriving suites for an OLD head are stored but
+// excluded by the head_sha filter, so they can't override the new head's
+// pending view.
+func (q *Queries) ListPullRequestsByIssue(ctx context.Context, issueID pgtype.UUID) ([]ListPullRequestsByIssueRow, error) {
 	rows, err := q.db.Query(ctx, listPullRequestsByIssue, issueID)
 	if err != nil {
 		return nil, err
 	}
 	defer rows.Close()
-	items := []GithubPullRequest{}
+	items := []ListPullRequestsByIssueRow{}
 	for rows.Next() {
-		var i GithubPullRequest
+		var i ListPullRequestsByIssueRow
 		if err := rows.Scan(
 			&i.ID,
 			&i.WorkspaceID,
@@ -340,8 +424,17 @@ func (q *Queries) ListPullRequestsByIssue(ctx context.Context, issueID pgtype.UU
 			&i.ClosedAt,
 			&i.PrCreatedAt,
 			&i.PrUpdatedAt,
+			&i.HeadSha,
+			&i.MergeableState,
+			&i.Additions,
+			&i.Deletions,
+			&i.ChangedFiles,
 			&i.CreatedAt,
 			&i.UpdatedAt,
+			&i.ChecksTotal,
+			&i.ChecksPassed,
+			&i.ChecksFailed,
+			&i.ChecksPending,
 		); err != nil {
 			return nil, err
 		}
@@ -373,11 +466,15 @@ const upsertGitHubPullRequest = `-- name: UpsertGitHubPullRequest :one
 INSERT INTO github_pull_request (
     workspace_id, installation_id, repo_owner, repo_name, pr_number,
     title, state, html_url, branch, author_login, author_avatar_url,
-    merged_at, closed_at, pr_created_at, pr_updated_at
+    merged_at, closed_at, pr_created_at, pr_updated_at,
+    head_sha, mergeable_state,
+    additions, deletions, changed_files
 ) VALUES (
     $1, $2, $3, $4, $5,
-    $6, $7, $8, $11, $12, $13,
-    $14, $15, $9, $10
+    $6, $7, $8, $15, $16, $17,
+    $18, $19, $9, $10,
+    $11, $20,
+    $12, $13, $14
 )
 ON CONFLICT (workspace_id, repo_owner, repo_name, pr_number) DO UPDATE SET
     installation_id = EXCLUDED.installation_id,
@@ -390,31 +487,56 @@ ON CONFLICT (workspace_id, repo_owner, repo_name, pr_number) DO UPDATE SET
     merged_at = EXCLUDED.merged_at,
     closed_at = EXCLUDED.closed_at,
     pr_updated_at = EXCLUDED.pr_updated_at,
+    head_sha = EXCLUDED.head_sha,
+    mergeable_state = CASE
+        WHEN COALESCE($21::boolean, FALSE) THEN NULL
+        WHEN EXCLUDED.mergeable_state IS NOT NULL THEN EXCLUDED.mergeable_state
+        ELSE github_pull_request.mergeable_state
+    END,
+    additions     = EXCLUDED.additions,
+    deletions     = EXCLUDED.deletions,
+    changed_files = EXCLUDED.changed_files,
     updated_at = now()
-RETURNING id, workspace_id, installation_id, repo_owner, repo_name, pr_number, title, state, html_url, branch, author_login, author_avatar_url, merged_at, closed_at, pr_created_at, pr_updated_at, created_at, updated_at
+RETURNING id, workspace_id, installation_id, repo_owner, repo_name, pr_number, title, state, html_url, branch, author_login, author_avatar_url, merged_at, closed_at, pr_created_at, pr_updated_at, created_at, updated_at, head_sha, mergeable_state, additions, deletions, changed_files
 `
 
 type UpsertGitHubPullRequestParams struct {
-	WorkspaceID     pgtype.UUID        `json:"workspace_id"`
-	InstallationID  int64              `json:"installation_id"`
-	RepoOwner       string             `json:"repo_owner"`
-	RepoName        string             `json:"repo_name"`
-	PrNumber        int32              `json:"pr_number"`
-	Title           string             `json:"title"`
-	State           string             `json:"state"`
-	HtmlUrl         string             `json:"html_url"`
-	PrCreatedAt     pgtype.Timestamptz `json:"pr_created_at"`
-	PrUpdatedAt     pgtype.Timestamptz `json:"pr_updated_at"`
-	Branch          pgtype.Text        `json:"branch"`
-	AuthorLogin     pgtype.Text        `json:"author_login"`
-	AuthorAvatarUrl pgtype.Text        `json:"author_avatar_url"`
-	MergedAt        pgtype.Timestamptz `json:"merged_at"`
-	ClosedAt        pgtype.Timestamptz `json:"closed_at"`
+	WorkspaceID         pgtype.UUID        `json:"workspace_id"`
+	InstallationID      int64              `json:"installation_id"`
+	RepoOwner           string             `json:"repo_owner"`
+	RepoName            string             `json:"repo_name"`
+	PrNumber            int32              `json:"pr_number"`
+	Title               string             `json:"title"`
+	State               string             `json:"state"`
+	HtmlUrl             string             `json:"html_url"`
+	PrCreatedAt         pgtype.Timestamptz `json:"pr_created_at"`
+	PrUpdatedAt         pgtype.Timestamptz `json:"pr_updated_at"`
+	HeadSha             string             `json:"head_sha"`
+	Additions           int32              `json:"additions"`
+	Deletions           int32              `json:"deletions"`
+	ChangedFiles        int32              `json:"changed_files"`
+	Branch              pgtype.Text        `json:"branch"`
+	AuthorLogin         pgtype.Text        `json:"author_login"`
+	AuthorAvatarUrl     pgtype.Text        `json:"author_avatar_url"`
+	MergedAt            pgtype.Timestamptz `json:"merged_at"`
+	ClosedAt            pgtype.Timestamptz `json:"closed_at"`
+	MergeableState      pgtype.Text        `json:"mergeable_state"`
+	ClearMergeableState pgtype.Bool        `json:"clear_mergeable_state"`
 }
 
 // =====================
 // GitHub Pull Request
 // =====================
+// mergeable_state has three-state semantics on UPDATE:
+//  1. clear_mergeable_state=true → write NULL (state-changing actions like
+//     opened/synchronize/reopened/edited(base) invalidate the prior verdict).
+//  2. clear_mergeable_state=false, mergeable_state non-null → write the value.
+//  3. clear_mergeable_state=false, mergeable_state null → preserve existing
+//     column. Metadata events (labeled/assigned/etc.) ship payloads without
+//     mergeability, and silently clobbering a known clean/dirty would lose
+//     information that GitHub only re-computes lazily.
+//
+// INSERT path always writes the incoming value (NULL acceptable for a new row).
 func (q *Queries) UpsertGitHubPullRequest(ctx context.Context, arg UpsertGitHubPullRequestParams) (GithubPullRequest, error) {
 	row := q.db.QueryRow(ctx, upsertGitHubPullRequest,
 		arg.WorkspaceID,
@@ -427,11 +549,17 @@ func (q *Queries) UpsertGitHubPullRequest(ctx context.Context, arg UpsertGitHubP
 		arg.HtmlUrl,
 		arg.PrCreatedAt,
 		arg.PrUpdatedAt,
+		arg.HeadSha,
+		arg.Additions,
+		arg.Deletions,
+		arg.ChangedFiles,
 		arg.Branch,
 		arg.AuthorLogin,
 		arg.AuthorAvatarUrl,
 		arg.MergedAt,
 		arg.ClosedAt,
+		arg.MergeableState,
+		arg.ClearMergeableState,
 	)
 	var i GithubPullRequest
 	err := row.Scan(
@@ -453,6 +581,59 @@ func (q *Queries) UpsertGitHubPullRequest(ctx context.Context, arg UpsertGitHubP
 		&i.PrUpdatedAt,
 		&i.CreatedAt,
 		&i.UpdatedAt,
+		&i.HeadSha,
+		&i.MergeableState,
+		&i.Additions,
+		&i.Deletions,
+		&i.ChangedFiles,
 	)
 	return i, err
 }
+
+const upsertPullRequestCheckSuite = `-- name: UpsertPullRequestCheckSuite :exec
+
+INSERT INTO github_pull_request_check_suite (
+    pr_id, suite_id, head_sha, app_id, conclusion, status, updated_at
+) VALUES (
+    $1, $2, $3, $4, $7, $5, $6
+)
+ON CONFLICT (pr_id, suite_id) DO UPDATE SET
+    head_sha   = EXCLUDED.head_sha,
+    app_id     = EXCLUDED.app_id,
+    conclusion = EXCLUDED.conclusion,
+    status     = EXCLUDED.status,
+    updated_at = EXCLUDED.updated_at
+WHERE EXCLUDED.updated_at >= github_pull_request_check_suite.updated_at
+`
+
+type UpsertPullRequestCheckSuiteParams struct {
+	PrID       pgtype.UUID        `json:"pr_id"`
+	SuiteID    int64              `json:"suite_id"`
+	HeadSha    string             `json:"head_sha"`
+	AppID      int64              `json:"app_id"`
+	Status     string             `json:"status"`
+	UpdatedAt  pgtype.Timestamptz `json:"updated_at"`
+	Conclusion pgtype.Text        `json:"conclusion"`
+}
+
+// =====================
+// GitHub PR check suite
+// =====================
+// Upserts a single check_suite row keyed by (pr_id, suite_id). The WHERE
+// clause on the DO UPDATE branch prevents a late-arriving older event from
+// overwriting a newer one — same-PR/same-suite ordering protection. Late
+// events targeting an old head still land here (their head_sha is stored
+// on the row); the head_sha filter in ListPullRequestsByIssue keeps them
+// out of the current aggregate.
+func (q *Queries) UpsertPullRequestCheckSuite(ctx context.Context, arg UpsertPullRequestCheckSuiteParams) error {
+	_, err := q.db.Exec(ctx, upsertPullRequestCheckSuite,
+		arg.PrID,
+		arg.SuiteID,
+		arg.HeadSha,
+		arg.AppID,
+		arg.Status,
+		arg.UpdatedAt,
+		arg.Conclusion,
+	)
+	return err
+}
diff --git a/server/pkg/db/generated/models.go b/server/pkg/db/generated/models.go
index f5de7faf6..d042d9546 100644
--- a/server/pkg/db/generated/models.go
+++ b/server/pkg/db/generated/models.go
@@ -272,6 +272,21 @@ type GithubPullRequest struct {
 	PrUpdatedAt     pgtype.Timestamptz `json:"pr_updated_at"`
 	CreatedAt       pgtype.Timestamptz `json:"created_at"`
 	UpdatedAt       pgtype.Timestamptz `json:"updated_at"`
+	HeadSha         string             `json:"head_sha"`
+	MergeableState  pgtype.Text        `json:"mergeable_state"`
+	Additions       int32              `json:"additions"`
+	Deletions       int32              `json:"deletions"`
+	ChangedFiles    int32              `json:"changed_files"`
+}
+
+type GithubPullRequestCheckSuite struct {
+	PrID       pgtype.UUID        `json:"pr_id"`
+	SuiteID    int64              `json:"suite_id"`
+	HeadSha    string             `json:"head_sha"`
+	AppID      int64              `json:"app_id"`
+	Conclusion pgtype.Text        `json:"conclusion"`
+	Status     string             `json:"status"`
+	UpdatedAt  pgtype.Timestamptz `json:"updated_at"`
 }
 
 type InboxItem struct {
diff --git a/server/pkg/db/queries/github.sql b/server/pkg/db/queries/github.sql
index d30bb33a2..e4a1db2d1 100644
--- a/server/pkg/db/queries/github.sql
+++ b/server/pkg/db/queries/github.sql
@@ -42,14 +42,27 @@ RETURNING id, workspace_id;
 -- =====================
 
 -- name: UpsertGitHubPullRequest :one
+-- mergeable_state has three-state semantics on UPDATE:
+--   1. clear_mergeable_state=true → write NULL (state-changing actions like
+--      opened/synchronize/reopened/edited(base) invalidate the prior verdict).
+--   2. clear_mergeable_state=false, mergeable_state non-null → write the value.
+--   3. clear_mergeable_state=false, mergeable_state null → preserve existing
+--      column. Metadata events (labeled/assigned/etc.) ship payloads without
+--      mergeability, and silently clobbering a known clean/dirty would lose
+--      information that GitHub only re-computes lazily.
+-- INSERT path always writes the incoming value (NULL acceptable for a new row).
 INSERT INTO github_pull_request (
     workspace_id, installation_id, repo_owner, repo_name, pr_number,
     title, state, html_url, branch, author_login, author_avatar_url,
-    merged_at, closed_at, pr_created_at, pr_updated_at
+    merged_at, closed_at, pr_created_at, pr_updated_at,
+    head_sha, mergeable_state,
+    additions, deletions, changed_files
 ) VALUES (
     $1, $2, $3, $4, $5,
     $6, $7, $8, sqlc.narg('branch'), sqlc.narg('author_login'), sqlc.narg('author_avatar_url'),
-    sqlc.narg('merged_at'), sqlc.narg('closed_at'), $9, $10
+    sqlc.narg('merged_at'), sqlc.narg('closed_at'), $9, $10,
+    $11, sqlc.narg('mergeable_state'),
+    $12, $13, $14
 )
 ON CONFLICT (workspace_id, repo_owner, repo_name, pr_number) DO UPDATE SET
     installation_id = EXCLUDED.installation_id,
@@ -62,6 +75,15 @@ ON CONFLICT (workspace_id, repo_owner, repo_name, pr_number) DO UPDATE SET
     merged_at = EXCLUDED.merged_at,
     closed_at = EXCLUDED.closed_at,
     pr_updated_at = EXCLUDED.pr_updated_at,
+    head_sha = EXCLUDED.head_sha,
+    mergeable_state = CASE
+        WHEN COALESCE(sqlc.narg('clear_mergeable_state')::boolean, FALSE) THEN NULL
+        WHEN EXCLUDED.mergeable_state IS NOT NULL THEN EXCLUDED.mergeable_state
+        ELSE github_pull_request.mergeable_state
+    END,
+    additions     = EXCLUDED.additions,
+    deletions     = EXCLUDED.deletions,
+    changed_files = EXCLUDED.changed_files,
     updated_at = now()
 RETURNING *;
 
@@ -70,10 +92,59 @@ SELECT * FROM github_pull_request
 WHERE workspace_id = $1 AND repo_owner = $2 AND repo_name = $3 AND pr_number = $4;
 
 -- name: ListPullRequestsByIssue :many
-SELECT pr.*
+-- Returns the issue's linked PRs with the aggregated check-suite counts for
+-- the PR's CURRENT head SHA. The `issue_prs` CTE narrows to this issue's PR
+-- ids first so the per-app aggregation only touches suite rows for those
+-- PRs — without that scoping the planner has to scan/aggregate every PR's
+-- suites in the workspace before joining on issue. Per-app latest suite is
+-- selected so a single app firing multiple suites on the same head doesn't
+-- get counted N times. Late-arriving suites for an OLD head are stored but
+-- excluded by the head_sha filter, so they can't override the new head's
+-- pending view.
+WITH issue_prs AS (
+    SELECT pr.id, pr.head_sha
+    FROM github_pull_request pr
+    JOIN issue_pull_request ipr ON ipr.pull_request_id = pr.id
+    WHERE ipr.issue_id = sqlc.arg('issue_id')
+),
+per_app_latest AS (
+    SELECT DISTINCT ON (cs.pr_id, cs.app_id)
+        cs.pr_id, cs.app_id, cs.conclusion, cs.status
+    FROM github_pull_request_check_suite cs
+    JOIN issue_prs ip ON ip.id = cs.pr_id
+    WHERE cs.head_sha = ip.head_sha AND ip.head_sha <> ''
+    ORDER BY cs.pr_id, cs.app_id, cs.updated_at DESC
+),
+checks AS (
+    SELECT
+        pr_id,
+        COUNT(*)::bigint AS total,
+        SUM(CASE WHEN status = 'completed' AND conclusion IN
+                ('failure','cancelled','timed_out','action_required','startup_failure','stale')
+            THEN 1 ELSE 0 END)::bigint AS failed,
+        SUM(CASE WHEN status = 'completed' AND conclusion IN
+                ('success','neutral','skipped')
+            THEN 1 ELSE 0 END)::bigint AS passed,
+        SUM(CASE WHEN status <> 'completed' OR conclusion IS NULL
+            THEN 1 ELSE 0 END)::bigint AS pending
+    FROM per_app_latest
+    GROUP BY pr_id
+)
+SELECT
+    pr.id, pr.workspace_id, pr.installation_id, pr.repo_owner, pr.repo_name,
+    pr.pr_number, pr.title, pr.state, pr.html_url, pr.branch, pr.author_login,
+    pr.author_avatar_url, pr.merged_at, pr.closed_at, pr.pr_created_at,
+    pr.pr_updated_at, pr.head_sha, pr.mergeable_state,
+    pr.additions, pr.deletions, pr.changed_files,
+    pr.created_at, pr.updated_at,
+    COALESCE(c.total, 0)::bigint   AS checks_total,
+    COALESCE(c.passed, 0)::bigint  AS checks_passed,
+    COALESCE(c.failed, 0)::bigint  AS checks_failed,
+    COALESCE(c.pending, 0)::bigint AS checks_pending
 FROM github_pull_request pr
 JOIN issue_pull_request ipr ON ipr.pull_request_id = pr.id
-WHERE ipr.issue_id = $1
+LEFT JOIN checks c ON c.pr_id = pr.id
+WHERE ipr.issue_id = sqlc.arg('issue_id')
 ORDER BY pr.pr_created_at DESC;
 
 -- name: ListIssueIDsForPullRequest :many
@@ -95,6 +166,30 @@ JOIN issue_pull_request ipr ON ipr.pull_request_id = pr.id
 WHERE ipr.issue_id = $1
   AND pr.id <> $2;
 
+-- =====================
+-- GitHub PR check suite
+-- =====================
+
+-- name: UpsertPullRequestCheckSuite :exec
+-- Upserts a single check_suite row keyed by (pr_id, suite_id). The WHERE
+-- clause on the DO UPDATE branch prevents a late-arriving older event from
+-- overwriting a newer one — same-PR/same-suite ordering protection. Late
+-- events targeting an old head still land here (their head_sha is stored
+-- on the row); the head_sha filter in ListPullRequestsByIssue keeps them
+-- out of the current aggregate.
+INSERT INTO github_pull_request_check_suite (
+    pr_id, suite_id, head_sha, app_id, conclusion, status, updated_at
+) VALUES (
+    $1, $2, $3, $4, sqlc.narg('conclusion'), $5, $6
+)
+ON CONFLICT (pr_id, suite_id) DO UPDATE SET
+    head_sha   = EXCLUDED.head_sha,
+    app_id     = EXCLUDED.app_id,
+    conclusion = EXCLUDED.conclusion,
+    status     = EXCLUDED.status,
+    updated_at = EXCLUDED.updated_at
+WHERE EXCLUDED.updated_at >= github_pull_request_check_suite.updated_at;
+
 -- =====================
 -- Issue ↔ Pull Request link
 -- =====================