feat: clickable shared PR header in git panel and reviews (#1620)

* feat: clickable shared PR header in git panel and reviews

Replace the standalone "View PR" button in the agent git panel with a
clickable PR title, matching the reviews view. Extract a shared PrHeader
component reused by both the git panel and the review main body.

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

* refactor: drop PrHeader wrapper, use shared component directly

The review-side PrHeader was just a thin adapter mapping detail -> the
shared component's props. Inline it at the call site and use the shared
PrHeader directly so there's a single component.

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

---------

Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>

ui/src/components/agents/AgentGitPanel.tsx

@@ -10,11 +10,9 @@ import {
   useFileTreeSelection,
 } from "@pierre/trees/react"
 import {
-  ArrowSquareOutIcon,
   ArrowsInIcon,
   ArrowsOutIcon,
   CaretDownIcon,
-  GitPullRequestIcon,
   SidebarSimpleIcon,
 } from "@phosphor-icons/react"
 import type { FileContents } from "@pierre/diffs/react"
@@ -26,6 +24,7 @@ import type { ChangedFileSummaryItem } from "@/components/agents/messages"
 import { agentsApi } from "@/lib/agents/api"
 import { useAgentThreadPrDiff } from "@/lib/agents/queries"
 import { ReviewTab } from "@/components/agents/ReviewTab"
+import { PrHeader } from "@/components/agents/PrHeader"
 import { buttonVariants } from "@/components/ui/button"
 import {
   DIFF_VIRTUALIZER_CONFIG,
@@ -518,38 +517,16 @@ export function AgentGitPanel({
         ) : (
           <>
             {pr && (
-              <div className="border-b border-[var(--ui-border)] px-4 py-3">
+              <PrHeader
-                <div className="flex items-start justify-between gap-3">
+                className="border-b border-[var(--ui-border)] px-4 py-3"
-                  <div className="min-w-0">
+                url={pr.url}
-                    <div className="truncate text-sm font-medium text-[var(--ui-text)]">
+                title={pr.title}
-                      {pr.title} #{pr.number}
+                number={pr.number}
-                    </div>
+                state={pr.state}
-                    <div className="mt-1 flex items-center gap-2 text-[11px] text-[var(--ui-text-dim)]">
+                headRef={pr.headRef}
-                      <span className="inline-flex items-center gap-1 rounded border border-[var(--ui-border)] px-1.5 py-0.5 capitalize">
+                baseRef={pr.baseRef}
-                        <GitPullRequestIcon className="size-3" />
+                titleClassName="truncate text-sm"
-                        {pr.state}
+              />
-                      </span>
-                      <span>
-                        {pr.headRef} → {pr.baseRef}
-                      </span>
-                    </div>
-                  </div>
-                  {pr.url && (
-                    <a
-                      href={pr.url}
-                      target="_blank"
-                      rel="noreferrer"
-                      className={buttonVariants({
-                        variant: "outline",
-                        size: "sm",
-                      })}
-                    >
-                      <ArrowSquareOutIcon className="size-3" />
-                      View PR
-                    </a>
-                  )}
-                </div>
-              </div>
             )}
 
             <div className="flex items-center gap-1 border-b border-[var(--ui-border)] px-3 py-2">

ui/src/components/agents/PrHeader.tsx

@@ -0,0 +1,88 @@
+import { GitPullRequestIcon } from "@phosphor-icons/react"
+
+import { cn } from "@/lib/utils"
+
+const STATE_STYLES: Record<string, string> = {
+  open: "border-emerald-600/40 text-emerald-500",
+  draft: "border-border text-muted-foreground",
+  merged: "border-purple-600/40 text-purple-500",
+  closed: "border-red-600/40 text-red-500",
+}
+
+export interface PrHeaderProps {
+  url: string
+  title: string
+  state: string
+  headRef: string
+  baseRef: string
+  number?: number | null
+  author?: string | null
+  stats?: {
+    changedFiles: number
+    additions: number
+    deletions: number
+  } | null
+  className?: string
+  titleClassName?: string
+}
+
+export function PrHeader({
+  url,
+  title,
+  state,
+  headRef,
+  baseRef,
+  number,
+  author,
+  stats,
+  className,
+  titleClassName,
+}: PrHeaderProps) {
+  return (
+    <div className={className}>
+      <span
+        className={cn(
+          "inline-flex items-center gap-1 rounded-full border px-2 py-0.5 text-[11px] capitalize",
+          STATE_STYLES[state] ?? STATE_STYLES.open
+        )}
+      >
+        <GitPullRequestIcon className="size-3" />
+        {state}
+      </span>
+      <h1 className={cn("mt-2 text-base font-medium", titleClassName)}>
+        <a
+          href={url}
+          target="_blank"
+          rel="noreferrer"
+          className="hover:underline"
+        >
+          {title}
+          {number != null && (
+            <span className="text-muted-foreground"> #{number}</span>
+          )}
+        </a>
+      </h1>
+      <div className="mt-2 flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
+        {author && (
+          <span className="font-medium text-foreground">{author}</span>
+        )}
+        <span className="rounded border border-border px-1.5 py-0.5 font-mono text-[11px]">
+          {baseRef}
+        </span>
+        <span>←</span>
+        <span className="rounded border border-border px-1.5 py-0.5 font-mono text-[11px]">
+          {headRef}
+        </span>
+        {stats && (
+          <>
+            <span>
+              {stats.changedFiles} file{stats.changedFiles === 1 ? "" : "s"}
+            </span>
+            <span className="text-emerald-500">+{stats.additions}</span>
+            <span className="text-red-500">-{stats.deletions}</span>
+          </>
+        )}
+      </div>
+    </div>
+  )
+}

ui/src/components/agents/ReviewMainBody.tsx

@@ -22,7 +22,6 @@ import {
   CodeIcon,
   CopyIcon,
   FlagIcon,
-  GitPullRequestIcon,
   InfoIcon,
   LinkIcon,
   ListBulletsIcon,
@@ -68,6 +67,7 @@ import type {
 import type { ChatAttachment } from "@/components/agents/ReviewChat"
 import type { DiffStyle } from "@/components/agents/utils/diffUtils"
 import { Markdown } from "@/components/agents/ported"
+import { PrHeader } from "@/components/agents/PrHeader"
 import {
   ReviewChat,
   ReviewChatComposerProvider,
@@ -1120,7 +1120,19 @@ function ReviewBodyInner({
                 config={DIFF_VIRTUALIZER_CONFIG}
               >
                 <div ref={scrollerProbe} aria-hidden className="hidden" />
-                <PrHeader detail={detail} />
+                <PrHeader
+                  url={detail.url}
+                  title={detail.pr.title}
+                  state={detail.pr.state}
+                  headRef={detail.pr.head_ref}
+                  baseRef={detail.pr.base_ref}
+                  author={detail.pr.author?.login}
+                  stats={{
+                    changedFiles: detail.pr.changed_files,
+                    additions: detail.pr.additions,
+                    deletions: detail.pr.deletions,
+                  }}
+                />
                 <div className="mt-4 rounded-lg border border-border bg-card p-4">
                   {detail.pr.body ? (
                     <Markdown
@@ -1256,56 +1268,6 @@ function DiffStyleButton({
   )
 }
 
-function PrHeader({ detail }: { detail: ReviewDetail }) {
-  const { pr } = detail
-  const stateStyles: Record<string, string> = {
-    open: "border-emerald-600/40 text-emerald-500",
-    draft: "border-border text-muted-foreground",
-    merged: "border-purple-600/40 text-purple-500",
-    closed: "border-red-600/40 text-red-500",
-  }
-  return (
-    <div>
-      <span
-        className={cn(
-          "inline-flex items-center gap-1 rounded-full border px-2 py-0.5 text-[11px] capitalize",
-          stateStyles[pr.state] ?? stateStyles.open
-        )}
-      >
-        <GitPullRequestIcon className="size-3" />
-        {pr.state}
-      </span>
-      <h1 className="mt-2 text-base font-medium">
-        <a
-          href={detail.url}
-          target="_blank"
-          rel="noreferrer"
-          className="hover:underline"
-        >
-          {pr.title}
-        </a>
-      </h1>
-      <div className="mt-2 flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
-        {pr.author && (
-          <span className="font-medium text-foreground">{pr.author.login}</span>
-        )}
-        <span className="rounded border border-border px-1.5 py-0.5 font-mono text-[11px]">
-          {pr.base_ref}
-        </span>
-        <span>←</span>
-        <span className="rounded border border-border px-1.5 py-0.5 font-mono text-[11px]">
-          {pr.head_ref}
-        </span>
-        <span>
-          {pr.changed_files} file{pr.changed_files === 1 ? "" : "s"}
-        </span>
-        <span className="text-emerald-500">+{pr.additions}</span>
-        <span className="text-red-500">-{pr.deletions}</span>
-      </div>
-    </div>
-  )
-}
-
 function GroupHeader({ group }: { group: ResolvedGroup }) {
   return (
     <div className="flex items-center gap-2">