diff --git a/desktop/src/features/projects/ui/ProjectDetailScreen.tsx b/desktop/src/features/projects/ui/ProjectDetailScreen.tsx
index addabcd55..ef68ae26f 100644
--- a/desktop/src/features/projects/ui/ProjectDetailScreen.tsx
+++ b/desktop/src/features/projects/ui/ProjectDetailScreen.tsx
@@ -843,36 +843,6 @@ export function ProjectDetailScreen(props: ProjectDetailScreenProps) {
       <div className="flex min-h-0 min-w-0 flex-1 flex-row overflow-hidden">
         <div className="relative flex min-h-0 min-w-0 flex-1 flex-col overflow-hidden">
           <ProjectDetailChrome
-            actions={
-              <>
-                <ProjectRepositoryManagement
-                  identityPubkey={identityQuery.data?.pubkey}
-                  onChange={handleRepositoryChange}
-                  project={project}
-                  projects={projectsQuery.data ?? []}
-                  repository={repository}
-                />
-                {repoRemote.webUrl &&
-                (repoRemote.host.kind !== "external" ||
-                  repoSource === "local") ? (
-                  <Button
-                    asChild
-                    aria-label="Open project web page"
-                    className="h-8 w-8 shrink-0 text-muted-foreground hover:text-foreground"
-                    size="icon"
-                    variant="ghost"
-                  >
-                    <a
-                      href={repoRemote.webUrl}
-                      rel="noopener noreferrer"
-                      target="_blank"
-                    >
-                      <ExternalLink className="h-4 w-4" />
-                    </a>
-                  </Button>
-                ) : null}
-              </>
-            }
             activeTabCrumb={activeTabCrumb}
             activeWorkItemCrumb={activeWorkItemCrumb}
             chromeRef={projectDetailHeaderChromeRef}
@@ -932,6 +902,36 @@ export function ProjectDetailScreen(props: ProjectDetailScreenProps) {
                 onSelectedTabChange={setActiveTab}
                 profiles={profiles}
                 project={repository}
+                repositoryControls={
+                  <>
+                    <ProjectRepositoryManagement
+                      identityPubkey={identityQuery.data?.pubkey}
+                      onChange={handleRepositoryChange}
+                      project={project}
+                      projects={projectsQuery.data ?? []}
+                      repository={repository}
+                    />
+                    {repoRemote.webUrl &&
+                    (repoRemote.host.kind !== "external" ||
+                      repoSource === "local") ? (
+                      <Button
+                        asChild
+                        aria-label="Open project web page"
+                        className="h-7 w-7 shrink-0 text-muted-foreground hover:text-foreground"
+                        size="icon"
+                        variant="ghost"
+                      >
+                        <a
+                          href={repoRemote.webUrl}
+                          rel="noopener noreferrer"
+                          target="_blank"
+                        >
+                          <ExternalLink className="h-4 w-4" />
+                        </a>
+                      </Button>
+                    ) : null}
+                  </>
+                }
                 projectId={project.id}
                 repoDiff={displayedRepoDiff}
                 repoDiffError={displayedRepoDiffError}
diff --git a/desktop/src/features/projects/ui/ProjectOverviewPanel.tsx b/desktop/src/features/projects/ui/ProjectOverviewPanel.tsx
index 0cb06b3e9..9f56f9752 100644
--- a/desktop/src/features/projects/ui/ProjectOverviewPanel.tsx
+++ b/desktop/src/features/projects/ui/ProjectOverviewPanel.tsx
@@ -36,6 +36,8 @@ type ProjectOverviewPanelProps = {
   externalUrl?: string | null;
   files: ProjectRepoFile[];
   gitDataState: GitDataState;
+  /** Hide the readme header rows when the workspace renders them itself. */
+  hideReadmeHeader?: boolean;
   project: Project;
   onViewContributors: () => void;
   profiles?: UserProfileLookup;
@@ -149,6 +151,7 @@ export function ProjectOverviewPanel({
   externalUrl,
   files,
   gitDataState,
+  hideReadmeHeader,
   onViewContributors,
   project,
   profiles,
@@ -182,6 +185,7 @@ export function ProjectOverviewPanel({
           externalUrl={externalUrl}
           file={readmeFile}
           gitDataState={gitDataState}
+          hideHeader={hideReadmeHeader}
           sourceControls={sourceControls}
           unavailableReason={unavailableReason}
         />
diff --git a/desktop/src/features/projects/ui/ProjectReadmePanel.tsx b/desktop/src/features/projects/ui/ProjectReadmePanel.tsx
index c398f1292..3519f5ea7 100644
--- a/desktop/src/features/projects/ui/ProjectReadmePanel.tsx
+++ b/desktop/src/features/projects/ui/ProjectReadmePanel.tsx
@@ -140,6 +140,7 @@ export function ReadmePanel({
   gitDataState,
   externalHost,
   externalUrl,
+  hideHeader,
   sourceControls,
   unavailableReason,
 }: {
@@ -149,13 +150,18 @@ export function ReadmePanel({
   gitDataState: "checking" | "available" | "empty" | "unavailable";
   externalHost?: string;
   externalUrl?: string | null;
+  /**
+   * Skip the header rows entirely — the workspace layout renders the source
+   * controls and last-changed timestamp itself.
+   */
+  hideHeader?: boolean;
   unavailableReason?: ProjectRepoUnavailableReason;
   /** Branch picker + remote/local toggle rendered in the panel header. */
   sourceControls?: RepoSourceHeaderControls;
 }) {
   // Two header rows, mirroring the files panel: controls on top, then the
   // file identity row.
-  const header = (
+  const header = hideHeader ? null : (
     <>
       {sourceControls ? (
         <div className="flex min-h-14 min-w-0 items-center gap-1 border-border/50 border-b px-3 py-3">
@@ -163,7 +169,6 @@ export function ReadmePanel({
           <RepositoryBranchDropdown
             branch={sourceControls.branch}
             branchOptions={sourceControls.branchOptions}
-            compact
             createBranchDisabled={sourceControls.createBranchDisabled}
             createBranchTitle={sourceControls.createBranchTitle}
             deleteBranchDisabled={sourceControls.deleteBranchDisabled}
diff --git a/desktop/src/features/projects/ui/ProjectRepositoryManagement.tsx b/desktop/src/features/projects/ui/ProjectRepositoryManagement.tsx
index f1a9c8a15..171998e9b 100644
--- a/desktop/src/features/projects/ui/ProjectRepositoryManagement.tsx
+++ b/desktop/src/features/projects/ui/ProjectRepositoryManagement.tsx
@@ -118,7 +118,7 @@ export function ProjectRepositoryManagement({
         <DropdownMenu>
           <DropdownMenuTrigger asChild>
             <Button
-              className="h-8 shrink-0 gap-1.5"
+              className="h-7 shrink-0 gap-1.5 rounded-md"
               disabled={repairMutation.isPending}
               size="sm"
               type="button"
diff --git a/desktop/src/features/projects/ui/ProjectRepositoryPanel.tsx b/desktop/src/features/projects/ui/ProjectRepositoryPanel.tsx
index c4becd905..39a6747d6 100644
--- a/desktop/src/features/projects/ui/ProjectRepositoryPanel.tsx
+++ b/desktop/src/features/projects/ui/ProjectRepositoryPanel.tsx
@@ -710,7 +710,6 @@ export function RepositoryFilesPanel({
           <RepositoryBranchDropdown
             branch={sourceControls.branch}
             branchOptions={sourceControls.branchOptions}
-            compact
             createBranchDisabled={sourceControls.createBranchDisabled}
             createBranchTitle={sourceControls.createBranchTitle}
             deleteBranchDisabled={sourceControls.deleteBranchDisabled}
@@ -752,7 +751,6 @@ export function RepositoryFilesPanel({
             <RepositoryBranchDropdown
               branch={sourceControls.branch}
               branchOptions={sourceControls.branchOptions}
-              compact
               createBranchDisabled={sourceControls.createBranchDisabled}
               createBranchTitle={sourceControls.createBranchTitle}
               deleteBranchDisabled={sourceControls.deleteBranchDisabled}
diff --git a/desktop/src/features/projects/ui/ProjectRepositoryPicker.tsx b/desktop/src/features/projects/ui/ProjectRepositoryPicker.tsx
index 889ac0af3..33fa6fd8c 100644
--- a/desktop/src/features/projects/ui/ProjectRepositoryPicker.tsx
+++ b/desktop/src/features/projects/ui/ProjectRepositoryPicker.tsx
@@ -1,13 +1,14 @@
 import {
   Check,
   ChevronDown,
+  FolderGit2,
   FolderPlus,
-  GitBranch,
   Link,
   Plus,
 } from "lucide-react";
 
 import type { Project, Repository } from "@/features/projects/hooks";
+import { cn } from "@/shared/lib/cn";
 import { Button } from "@/shared/ui/button";
 import {
   DropdownMenu,
@@ -16,6 +17,7 @@ import {
   DropdownMenuLabel,
   DropdownMenuTrigger,
 } from "@/shared/ui/dropdown-menu";
+import { PROJECT_PICKER_TRIGGER_CLASS } from "./projectPanelStyles";
 
 export function ProjectRepositoryPicker({
   onAttach,
@@ -32,7 +34,7 @@ export function ProjectRepositoryPicker({
 }) {
   const repositoryLabel = (
     <>
-      <GitBranch className="h-3.5 w-3.5" />
+      <FolderGit2 className="h-4 w-4 shrink-0 text-muted-foreground" />
       <span className="truncate">{repository.name}</span>
     </>
   );
@@ -42,7 +44,10 @@ export function ProjectRepositoryPicker({
     <div className="flex items-center gap-1.5">
       {project.repositoryAddresses.length === 1 ? (
         <div
-          className="flex h-8 max-w-64 shrink-0 items-center gap-1.5 rounded-md border border-input bg-background px-3 text-sm font-medium"
+          className={cn(
+            "flex max-w-64 items-center rounded-md border border-input bg-background",
+            PROJECT_PICKER_TRIGGER_CLASS,
+          )}
           data-testid="project-repository-picker"
         >
           {repositoryLabel}
@@ -52,13 +57,13 @@ export function ProjectRepositoryPicker({
           <DropdownMenuTrigger asChild>
             <Button
               aria-label="Select repository"
-              className="h-8 max-w-64 shrink-0 gap-1.5"
+              className={cn("max-w-64", PROJECT_PICKER_TRIGGER_CLASS)}
               data-testid="project-repository-picker"
               size="sm"
               variant="outline"
             >
               {repositoryLabel}
-              <ChevronDown className="h-3.5 w-3.5 text-muted-foreground" />
+              <ChevronDown className="h-3.5 w-3.5 shrink-0 text-muted-foreground" />
             </Button>
           </DropdownMenuTrigger>
           <DropdownMenuContent align="end" className="min-w-56">
@@ -98,7 +103,7 @@ export function ProjectRepositoryPicker({
           <DropdownMenuTrigger asChild>
             <Button
               aria-label="Add repository"
-              className="h-8 w-8 shrink-0"
+              className="h-7 w-7 shrink-0 rounded-md"
               data-testid="add-project-repository"
               size="icon"
               type="button"
diff --git a/desktop/src/features/projects/ui/ProjectRepositorySource.tsx b/desktop/src/features/projects/ui/ProjectRepositorySource.tsx
index f1c9ecd45..4815db793 100644
--- a/desktop/src/features/projects/ui/ProjectRepositorySource.tsx
+++ b/desktop/src/features/projects/ui/ProjectRepositorySource.tsx
@@ -26,7 +26,10 @@ import {
   DropdownMenuTrigger,
 } from "@/shared/ui/dropdown-menu";
 import { GitHubMark } from "./GitHubMark";
-import { PROJECT_PANEL_ACTION_BUTTON_CLASS } from "./projectPanelStyles";
+import {
+  PROJECT_PANEL_ACTION_BUTTON_CLASS,
+  PROJECT_PICKER_TRIGGER_CLASS,
+} from "./projectPanelStyles";
 
 /** Branch picker shared by the readme and files panel headers. */
 export function RepositoryBranchDropdown({
@@ -34,7 +37,6 @@ export function RepositoryBranchDropdown({
   branchOptions,
   selectedTag,
   tagOptions = [],
-  compact,
   createBranchDisabled,
   createBranchTitle,
   deleteBranchDisabled,
@@ -48,8 +50,6 @@ export function RepositoryBranchDropdown({
   branchOptions: string[];
   selectedTag?: string | null;
   tagOptions?: Array<{ name: string; commit: string }>;
-  /** Smaller trigger for inline headers. */
-  compact?: boolean;
   createBranchDisabled?: boolean;
   createBranchTitle?: string;
   deleteBranchDisabled?: boolean;
@@ -74,17 +74,13 @@ export function RepositoryBranchDropdown({
     <DropdownMenu>
       <DropdownMenuTrigger asChild>
         <Button
-          className={
-            compact
-              ? "h-7 max-w-full gap-1.5 rounded-md px-3 font-mono text-sm font-medium hover:border-input"
-              : "h-6 max-w-full gap-1.5 px-2 font-mono text-sm font-semibold hover:border-input"
-          }
+          className={PROJECT_PICKER_TRIGGER_CLASS}
           size="sm"
           type="button"
           variant="outline"
         >
           <RefIcon className="h-4 w-4 shrink-0 text-muted-foreground" />
-          <span className="truncate">{selectedTag ?? branch}</span>
+          <span className="truncate font-mono">{selectedTag ?? branch}</span>
           <ChevronDown className="h-3.5 w-3.5 shrink-0 text-muted-foreground" />
         </Button>
       </DropdownMenuTrigger>
@@ -229,7 +225,7 @@ export function RepoSourceDropdown({
     <DropdownMenu>
       <DropdownMenuTrigger asChild>
         <Button
-          className="h-7 max-w-full shrink-0 gap-1.5 rounded-md px-3 text-sm font-medium hover:border-input"
+          className={PROJECT_PICKER_TRIGGER_CLASS}
           size="sm"
           type="button"
           variant="outline"
diff --git a/desktop/src/features/projects/ui/ProjectWorkspaceTabs.tsx b/desktop/src/features/projects/ui/ProjectWorkspaceTabs.tsx
index 238f8390e..7e8a3f815 100644
--- a/desktop/src/features/projects/ui/ProjectWorkspaceTabs.tsx
+++ b/desktop/src/features/projects/ui/ProjectWorkspaceTabs.tsx
@@ -29,11 +29,20 @@ import {
 } from "@/features/projects/lib/projectRepoAvailability";
 import { useMemberChannelIds } from "@/features/projects/useRepositoryAccess";
 import type { UserProfileLookup } from "@/features/profile/lib/identity";
+import { cn } from "@/shared/lib/cn";
 import { Button } from "@/shared/ui/button";
 import { Tabs, TabsContent } from "@/shared/ui/tabs";
 import { findReadmeFile } from "./ProjectReadmePanel";
-import { RepositoryFilesPanel } from "./ProjectRepositoryPanel";
-import type { RepoSourceHeaderControls } from "./ProjectRepositorySource";
+import {
+  formatLastChangedAt,
+  RepositoryFilesPanel,
+} from "./ProjectRepositoryPanel";
+import {
+  type RepoSourceHeaderControls,
+  RepoSourceDropdown,
+  RepoSyncActionButton,
+  RepositoryBranchDropdown,
+} from "./ProjectRepositorySource";
 import { ProjectCommitDetailPanel } from "./ProjectCommitDetailPanel";
 import { ActivityPanel, ContributorsPanel } from "./ProjectDetailFeedPanels";
 import { ProjectIssuesPanel } from "./ProjectIssuesPanel";
@@ -154,6 +163,7 @@ export function WorkspaceTabs({
   repoContributors,
   repoSource,
   repoHost,
+  repositoryControls,
   sourceControls,
   terminalTitle,
   viewerGitIdentity,
@@ -193,7 +203,9 @@ export function WorkspaceTabs({
   repoContributors: ProjectRepoContributor[];
   repoSource: "remote" | "local";
   repoHost: ProjectRepoHost;
-  /** Branch picker + remote/local toggle for the Code tab header. */
+  /** Repository picker (and related actions) for the selection header row. */
+  repositoryControls?: React.ReactNode;
+  /** Branch picker + remote/local toggle for the selection header row. */
   sourceControls?: RepoSourceHeaderControls;
   terminalTitle?: string;
   viewerGitIdentity?: ViewerGitIdentity | null;
@@ -326,235 +338,288 @@ export function WorkspaceTabs({
 
   return (
     <Tabs
-      className="space-y-3"
+      className="min-w-0"
       onValueChange={handleTabChange}
       value={selectedTab}
     >
-      {repositoryLoaded ? (
-        <div className="flex h-10 min-w-0 items-center gap-1">
-          <ProjectTabsList prsActive={isPullRequestSelected} />
-          {onOpenTerminal ? (
-            <Button
-              aria-label="Open terminal"
-              className="h-8 w-8 shrink-0 text-muted-foreground hover:text-foreground"
-              onClick={() => onOpenTerminal()}
-              size="icon"
-              title={terminalTitle ?? "Open terminal"}
-              variant="ghost"
-            >
-              <SquareTerminal className="h-[1.125rem] w-[1.125rem]" />
-            </Button>
-          ) : null}
-          {updatePullRequestAction ? (
-            <Button
-              className="h-8 shrink-0 gap-1.5"
-              disabled={updatePullRequestAction.pending}
-              onClick={updatePullRequestAction.onUpdate}
-              size="sm"
-              title="Publish the pushed commit to this pull request"
-              variant="outline"
-            >
-              <RefreshCw className="h-4 w-4" />
-              {updatePullRequestAction.pending ? "Updating…" : "Update PR"}
-            </Button>
-          ) : null}
-        </div>
-      ) : null}
-      {selectedPullRequest ? (
-        <div className={PROJECT_DETAIL_PANEL_CLASS} data-project-detail-panel>
-          {/* Two full-height columns: the meta rail runs all the way to the
+      {/* Single workspace box: selection header (repository / source /
+          branch), then the tab strip, then the active panel. Inner panels
+          keep their own PROJECT_DETAIL_PANEL_CLASS for standalone use, so
+          their border + radius are neutralized here via the data attribute
+          they all carry. */}
+      <div
+        className={cn(
+          PROJECT_DETAIL_PANEL_CLASS,
+          "[&_[data-project-detail-panel]]:rounded-none [&_[data-project-detail-panel]]:border-0",
+        )}
+        data-project-detail-panel
+      >
+        {repositoryControls || sourceControls ? (
+          <div className="flex min-h-12 min-w-0 flex-wrap items-center gap-1.5 border-border/50 border-b px-3 py-2">
+            {repositoryControls}
+            {sourceControls ? (
+              <>
+                <RepoSourceDropdown controls={sourceControls} />
+                <RepositoryBranchDropdown
+                  branch={sourceControls.branch}
+                  branchOptions={sourceControls.branchOptions}
+                  createBranchDisabled={sourceControls.createBranchDisabled}
+                  createBranchTitle={sourceControls.createBranchTitle}
+                  deleteBranchDisabled={sourceControls.deleteBranchDisabled}
+                  deleteBranchTitle={sourceControls.deleteBranchTitle}
+                  onBranchChange={sourceControls.onBranchChange}
+                  onCreateBranch={sourceControls.onCreateBranch}
+                  onDeleteBranch={sourceControls.onDeleteBranch}
+                  onTagChange={sourceControls.onTagChange}
+                  selectedTag={sourceControls.selectedTag}
+                  tagOptions={sourceControls.tagOptions}
+                />
+                <div className="ml-auto flex shrink-0 items-center">
+                  <RepoSyncActionButton controls={sourceControls} />
+                </div>
+              </>
+            ) : null}
+          </div>
+        ) : null}
+        {repositoryLoaded ? (
+          <div className="flex h-10 min-w-0 items-center gap-1 border-border/50 border-b px-2">
+            <ProjectTabsList prsActive={isPullRequestSelected} />
+            {onOpenTerminal ? (
+              <Button
+                aria-label="Open terminal"
+                className="h-8 w-8 shrink-0 text-muted-foreground hover:text-foreground"
+                onClick={() => onOpenTerminal()}
+                size="icon"
+                title={terminalTitle ?? "Open terminal"}
+                variant="ghost"
+              >
+                <SquareTerminal className="h-[1.125rem] w-[1.125rem]" />
+              </Button>
+            ) : null}
+            {updatePullRequestAction ? (
+              <Button
+                className="h-8 shrink-0 gap-1.5"
+                disabled={updatePullRequestAction.pending}
+                onClick={updatePullRequestAction.onUpdate}
+                size="sm"
+                title="Publish the pushed commit to this pull request"
+                variant="outline"
+              >
+                <RefreshCw className="h-4 w-4" />
+                {updatePullRequestAction.pending ? "Updating…" : "Update PR"}
+              </Button>
+            ) : null}
+            {selectedTab === "overview" && readmeFile ? (
+              <span className="ml-auto hidden shrink-0 pr-2 text-2xs text-muted-foreground sm:block">
+                Last changed {formatLastChangedAt(readmeFile.lastChangedAt)}
+              </span>
+            ) : null}
+          </div>
+        ) : null}
+        {selectedPullRequest ? (
+          <div className={PROJECT_DETAIL_PANEL_CLASS} data-project-detail-panel>
+            {/* Two full-height columns: the meta rail runs all the way to the
               top of the card, alongside the header and tabs. */}
-          <div className="grid xl:grid-cols-[minmax(0,1fr)_18rem]">
-            <div className="min-w-0">
-              <PullRequestDetailHeader
-                profiles={profiles}
-                pullRequest={selectedPullRequest}
-              />
-              <div className="border-b border-border/60 px-4">
-                <PullRequestTabsList
-                  filesCount={repoDiff?.files.length ?? files.length}
+            <div className="grid xl:grid-cols-[minmax(0,1fr)_18rem]">
+              <div className="min-w-0">
+                <PullRequestDetailHeader
+                  profiles={profiles}
                   pullRequest={selectedPullRequest}
                 />
-              </div>
-              {(["conversation", "commits", "checks"] as const).map((mode) => (
-                <TabsContent className="m-0" key={mode} value={`pr-${mode}`}>
-                  <PullRequestsPanel
-                    error={pullRequestsError}
-                    isLoading={pullRequestsLoading}
-                    mode={mode}
-                    onOpenInlineComment={handleOpenPullRequestComment}
-                    onOpenCommit={onSelectedCommitHashChange}
-                    onOpenTerminal={onOpenMergeRecoveryTerminal}
-                    onSelectedPullRequestIdChange={
-                      onSelectedPullRequestIdChange
+                <div className="border-b border-border/60 px-4">
+                  <PullRequestTabsList
+                    filesCount={repoDiff?.files.length ?? files.length}
+                    pullRequest={selectedPullRequest}
+                  />
+                </div>
+                {(["conversation", "commits", "checks"] as const).map(
+                  (mode) => (
+                    <TabsContent
+                      className="m-0"
+                      key={mode}
+                      value={`pr-${mode}`}
+                    >
+                      <PullRequestsPanel
+                        error={pullRequestsError}
+                        isLoading={pullRequestsLoading}
+                        mode={mode}
+                        onOpenInlineComment={handleOpenPullRequestComment}
+                        onOpenCommit={onSelectedCommitHashChange}
+                        onOpenTerminal={onOpenMergeRecoveryTerminal}
+                        onSelectedPullRequestIdChange={
+                          onSelectedPullRequestIdChange
+                        }
+                        profiles={profiles}
+                        project={project}
+                        pullRequests={pullRequests}
+                        selectedPullRequestId={selectedPullRequestId}
+                      />
+                    </TabsContent>
+                  ),
+                )}
+                <TabsContent className="m-0" value="pr-files">
+                  <ProjectPullRequestFilesChangedPanel
+                    diff={repoDiff}
+                    error={repoDiffError}
+                    focusedAnchor={
+                      pullRequestCommentTarget?.pullRequestId ===
+                      selectedPullRequestId
+                        ? pullRequestCommentTarget.anchor
+                        : null
                     }
+                    isLoading={repoDiffLoading}
                     profiles={profiles}
                     project={project}
-                    pullRequests={pullRequests}
-                    selectedPullRequestId={selectedPullRequestId}
+                    pullRequest={selectedPullRequest}
                   />
                 </TabsContent>
-              ))}
-              <TabsContent className="m-0" value="pr-files">
-                <ProjectPullRequestFilesChangedPanel
-                  diff={repoDiff}
-                  error={repoDiffError}
-                  focusedAnchor={
-                    pullRequestCommentTarget?.pullRequestId ===
-                    selectedPullRequestId
-                      ? pullRequestCommentTarget.anchor
-                      : null
-                  }
-                  isLoading={repoDiffLoading}
-                  profiles={profiles}
-                  project={project}
-                  pullRequest={selectedPullRequest}
-                />
-              </TabsContent>
-            </div>
-            <PullRequestMetaRail
-              profiles={profiles}
-              project={project}
-              pullRequest={selectedPullRequest}
-            />
-          </div>
-        </div>
-      ) : null}
-
-      <TabsContent className="m-0" value="overview">
-        <ProjectOverviewPanel
-          accessChannelId={project.channelId}
-          contributors={displayedContributors}
-          externalHost={externalHost}
-          externalUrl={externalHost ? sourceControls?.externalUrl : null}
-          files={files}
-          gitDataState={gitDataState}
-          onViewContributors={() => setSelectedTab("contributors")}
-          profiles={profiles}
-          project={project}
-          pullRequests={pullRequests}
-          readmeFile={readmeFile}
-          snapshot={displayedSnapshot}
-          sourceControls={sourceControls}
-          unavailableReason={unavailableReason}
-        />
-      </TabsContent>
-
-      <TabsContent className="m-0" value="activity">
-        {selectedCommitHash ? (
-          <ProjectCommitDetailPanel
-            commit={
-              displayedSnapshot?.commits.find(
-                (commit) => commit.hash === selectedCommitHash,
-              ) ?? null
-            }
-            commitAuthorPubkeys={commitAuthorPubkeys}
-            commitHash={selectedCommitHash}
-            viewerGitIdentity={viewerGitIdentity}
-            diff={commitDiff}
-            diffError={commitDiffError}
-            diffLoading={commitDiffLoading}
-            originAgentName={selectedCommitPullRequest?.originAgentName}
-            originChannelId={selectedCommitPullRequest?.channelId}
-            profiles={profiles}
-          />
-        ) : (
-          <ActivityPanel
-            branch={sourceControls?.branch}
-            error={displayedSnapshotError}
-            isLoading={displayedSnapshotLoading}
-            onSelectCommit={(commit) => onSelectedCommitHashChange(commit.hash)}
-            profiles={profiles}
-            pullRequests={pullRequests}
-            repoContributors={displayedContributors}
-            snapshot={displayedSnapshot}
-            viewerGitIdentity={viewerGitIdentity}
-          />
-        )}
-      </TabsContent>
-
-      <TabsContent
-        className={`m-0 ${PROJECT_DETAIL_PANEL_CLASS}`}
-        data-project-detail-panel
-        value="prs"
-      >
-        <WorkItemListHeader
-          actionDisabled={
-            !createPullRequestAction ||
-            createPullRequestAction.projects.length === 0
-          }
-          actionLabel="Pull Request"
-          actionTitle="Choose a repository and branches to compare."
-          icon={GitPullRequest}
-          onAction={() => setCreatePullRequestOpen(true)}
-          title="Pull Requests"
-        />
-        <PullRequestsPanel
-          error={pullRequestsError}
-          isLoading={pullRequestsLoading}
-          onOpenCommit={onSelectedCommitHashChange}
-          onOpenTerminal={onOpenMergeRecoveryTerminal}
-          onSelectedPullRequestIdChange={onSelectedPullRequestIdChange}
-          profiles={profiles}
-          project={project}
-          pullRequests={pullRequests}
-          selectedPullRequestId={selectedPullRequestId}
-        />
-      </TabsContent>
-
-      <TabsContent
-        className={`m-0 ${PROJECT_DETAIL_PANEL_CLASS}`}
-        data-project-detail-panel
-        value="issues"
-      >
-        <WorkItemListHeader
-          actionDisabled={createIssueAction.pending}
-          actionLabel="Issues"
-          icon={CircleDot}
-          onAction={() => setCreateIssueOpen(true)}
-          title="Issues"
-        />
-        <ProjectIssuesPanel
-          onSelectedIssueIdChange={onSelectedIssueIdChange}
-          profiles={profiles}
-          project={project}
-          selectedIssueId={selectedIssueId}
-        />
-      </TabsContent>
-
-      <TabsContent className="m-0" value="files">
-        {repoSource === "local" && !localSnapshot && !localSnapshotLoading ? (
-          <div className="mb-3">
-            <div
-              className={PROJECT_DETAIL_PANEL_MESSAGE_CLASS}
-              data-project-detail-panel
-            >
-              No local checkout found.
+              </div>
+              <PullRequestMetaRail
+                profiles={profiles}
+                project={project}
+                pullRequest={selectedPullRequest}
+              />
             </div>
           </div>
         ) : null}
-        <RepositoryFilesPanel
-          error={displayedSnapshotError}
-          fallbackAuthorPubkey={project.owner}
-          files={files}
-          isLoading={displayedSnapshotLoading}
-          profiles={profiles}
-          snapshot={displayedSnapshot}
-          sourceControls={sourceControls}
-          unavailableMessage={
-            externalHost
-              ? `Not mirrored on Buzz. Repository files are hosted on ${externalHost}.`
-              : undefined
-          }
-        />
-      </TabsContent>
 
-      <TabsContent className="m-0" value="contributors">
-        <ContributorsPanel
-          profiles={profiles}
-          repoContributors={displayedContributors}
-        />
-      </TabsContent>
+        <TabsContent className="m-0" value="overview">
+          <ProjectOverviewPanel
+            accessChannelId={project.channelId}
+            contributors={displayedContributors}
+            externalHost={externalHost}
+            externalUrl={externalHost ? sourceControls?.externalUrl : null}
+            files={files}
+            gitDataState={gitDataState}
+            hideReadmeHeader
+            onViewContributors={() => setSelectedTab("contributors")}
+            profiles={profiles}
+            project={project}
+            pullRequests={pullRequests}
+            readmeFile={readmeFile}
+            snapshot={displayedSnapshot}
+            sourceControls={sourceControls}
+            unavailableReason={unavailableReason}
+          />
+        </TabsContent>
+
+        <TabsContent className="m-0" value="activity">
+          {selectedCommitHash ? (
+            <ProjectCommitDetailPanel
+              commit={
+                displayedSnapshot?.commits.find(
+                  (commit) => commit.hash === selectedCommitHash,
+                ) ?? null
+              }
+              commitAuthorPubkeys={commitAuthorPubkeys}
+              commitHash={selectedCommitHash}
+              viewerGitIdentity={viewerGitIdentity}
+              diff={commitDiff}
+              diffError={commitDiffError}
+              diffLoading={commitDiffLoading}
+              originAgentName={selectedCommitPullRequest?.originAgentName}
+              originChannelId={selectedCommitPullRequest?.channelId}
+              profiles={profiles}
+            />
+          ) : (
+            <ActivityPanel
+              branch={sourceControls?.branch}
+              error={displayedSnapshotError}
+              isLoading={displayedSnapshotLoading}
+              onSelectCommit={(commit) =>
+                onSelectedCommitHashChange(commit.hash)
+              }
+              profiles={profiles}
+              pullRequests={pullRequests}
+              repoContributors={displayedContributors}
+              snapshot={displayedSnapshot}
+              viewerGitIdentity={viewerGitIdentity}
+            />
+          )}
+        </TabsContent>
+
+        <TabsContent
+          className={`m-0 ${PROJECT_DETAIL_PANEL_CLASS}`}
+          data-project-detail-panel
+          value="prs"
+        >
+          <WorkItemListHeader
+            actionDisabled={
+              !createPullRequestAction ||
+              createPullRequestAction.projects.length === 0
+            }
+            actionLabel="Pull Request"
+            actionTitle="Choose a repository and branches to compare."
+            icon={GitPullRequest}
+            onAction={() => setCreatePullRequestOpen(true)}
+            title="Pull Requests"
+          />
+          <PullRequestsPanel
+            error={pullRequestsError}
+            isLoading={pullRequestsLoading}
+            onOpenCommit={onSelectedCommitHashChange}
+            onOpenTerminal={onOpenMergeRecoveryTerminal}
+            onSelectedPullRequestIdChange={onSelectedPullRequestIdChange}
+            profiles={profiles}
+            project={project}
+            pullRequests={pullRequests}
+            selectedPullRequestId={selectedPullRequestId}
+          />
+        </TabsContent>
+
+        <TabsContent
+          className={`m-0 ${PROJECT_DETAIL_PANEL_CLASS}`}
+          data-project-detail-panel
+          value="issues"
+        >
+          <WorkItemListHeader
+            actionDisabled={createIssueAction.pending}
+            actionLabel="Issues"
+            icon={CircleDot}
+            onAction={() => setCreateIssueOpen(true)}
+            title="Issues"
+          />
+          <ProjectIssuesPanel
+            onSelectedIssueIdChange={onSelectedIssueIdChange}
+            profiles={profiles}
+            project={project}
+            selectedIssueId={selectedIssueId}
+          />
+        </TabsContent>
+
+        <TabsContent className="m-0" value="files">
+          {repoSource === "local" && !localSnapshot && !localSnapshotLoading ? (
+            <div className="mb-3">
+              <div
+                className={PROJECT_DETAIL_PANEL_MESSAGE_CLASS}
+                data-project-detail-panel
+              >
+                No local checkout found.
+              </div>
+            </div>
+          ) : null}
+          <RepositoryFilesPanel
+            error={displayedSnapshotError}
+            fallbackAuthorPubkey={project.owner}
+            files={files}
+            isLoading={displayedSnapshotLoading}
+            profiles={profiles}
+            snapshot={displayedSnapshot}
+            unavailableMessage={
+              externalHost
+                ? `Not mirrored on Buzz. Repository files are hosted on ${externalHost}.`
+                : undefined
+            }
+          />
+        </TabsContent>
+
+        <TabsContent className="m-0" value="contributors">
+          <ContributorsPanel
+            profiles={profiles}
+            repoContributors={displayedContributors}
+          />
+        </TabsContent>
+      </div>
       {createPullRequestAction && createPullRequestOpen ? (
         <CreatePullRequestDialog
           initialProjectId={projectId}
diff --git a/desktop/src/features/projects/ui/projectPanelStyles.ts b/desktop/src/features/projects/ui/projectPanelStyles.ts
index c4cf24ba0..83192671d 100644
--- a/desktop/src/features/projects/ui/projectPanelStyles.ts
+++ b/desktop/src/features/projects/ui/projectPanelStyles.ts
@@ -2,6 +2,13 @@
 export const PROJECT_PANEL_ACTION_BUTTON_CLASS =
   "h-auto shrink-0 gap-1.5 rounded-full border-transparent bg-muted px-3 py-1.5 text-sm font-medium text-foreground shadow-none hover:bg-muted/80";
 
+/**
+ * Shared trigger for the selection dropdowns (repository, source, branch) so
+ * they read as one consistent control family in the workspace header.
+ */
+export const PROJECT_PICKER_TRIGGER_CLASS =
+  "h-7 max-w-full shrink-0 gap-1.5 rounded-md px-3 text-sm font-medium hover:border-input";
+
 /** Bordered shell that lets the project page surface show through. */
 export const PROJECT_DETAIL_PANEL_CLASS =
   "overflow-hidden rounded-xl border border-border/60 bg-transparent";