🤖 Add title bar to left sidebar (#159)

Adds a compact title bar above the Projects section showing version and
build date.

## Changes
- **TitleBar component**: Displays `cmux <git-version> <build-date>`
with tight vertical padding
- **LeftSidebar component**: Wraps TitleBar and ProjectSidebar together
- **ProjectSidebar refactored**: Removed container styling (now handled
by LeftSidebar)
- Ctrl+P collapse/expand applies to entire LeftSidebar including title
bar

## Design
- Title bar only visible when sidebar is expanded
- Subtle styling: dark background (#1e1e1e), muted text (#858585)
- Version on left, build date on right
- Font size: 11px for title, 10px for date

_Generated with `cmux`_

Author: ammar-agent

Makefile

@@ -19,7 +19,7 @@
 #   Add `## Description` after the target to make it appear in `make help`
 
 .PHONY: all build dev start clean help
-.PHONY: build-renderer
+.PHONY: build-renderer version
 .PHONY: lint lint-fix fmt fmt-check fmt-shell fmt-nix fmt-nix-check fmt-shell-check typecheck static-check
 .PHONY: test test-unit test-integration test-watch test-coverage test-e2e
 .PHONY: dist dist-mac dist-win dist-linux
@@ -81,9 +81,12 @@ build-renderer: ensure-deps src/version.ts ## Build renderer process
 	@echo "Building renderer..."
 	@bun x vite build
 
-src/version.ts: ## Generate version file
+# Always regenerate version file (marked as .PHONY above)
+version: ## Generate version file
 	@./scripts/generate-version.sh
 
+src/version.ts: version
+
 ## Quality checks (can run in parallel)
 static-check: lint typecheck fmt-check ## Run all static checks
 

scripts/generate-version.sh

@@ -1,17 +1,19 @@
 #!/bin/bash
 # Generate version.ts with git information
 
-VERSION=$(git describe --tags --always --dirty 2>/dev/null || echo "unknown")
+GIT_COMMIT=$(git rev-parse --short HEAD 2>/dev/null || echo "unknown")
+GIT_DESCRIBE=$(git describe --tags --always --dirty 2>/dev/null || echo "unknown")
 TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
 
 cat >src/version.ts <<EOF
 // This file is auto-generated by scripts/generate-version.sh
 // Do not edit manually
 
 export const VERSION = {
-  git: "${VERSION}",
+  git_commit: "${GIT_COMMIT}",
+  git_describe: "${GIT_DESCRIBE}",
   buildTime: "${TIMESTAMP}",
 };
 EOF
 
-echo "Generated version.ts: ${VERSION} at ${TIMESTAMP}"
+echo "Generated version.ts: ${GIT_DESCRIBE} (${GIT_COMMIT}) at ${TIMESTAMP}"

src/App.tsx

@@ -6,7 +6,7 @@ import { GlobalFonts } from "./styles/fonts";
 import { GlobalScrollbars } from "./styles/scrollbars";
 import type { ProjectConfig } from "./config";
 import type { WorkspaceSelection } from "./components/ProjectSidebar";
-import ProjectSidebar from "./components/ProjectSidebar";
+import { LeftSidebar } from "./components/LeftSidebar";
 import NewWorkspaceModal from "./components/NewWorkspaceModal";
 import { AIView } from "./components/AIView";
 import { ErrorBoundary } from "./components/ErrorBoundary";
@@ -485,7 +485,7 @@ function AppInner() {
       <Global styles={globalStyles} />
       <GitStatusProvider workspaceMetadata={workspaceMetadata}>
         <AppContainer>
-          <ProjectSidebar
+          <LeftSidebar
             projects={projects}
             workspaceMetadata={workspaceMetadata}
             selectedWorkspace={selectedWorkspace}

src/components/LeftSidebar.tsx

@@ -0,0 +1,52 @@
+import React from "react";
+import styled from "@emotion/styled";
+import type { ProjectConfig } from "@/config";
+import type { WorkspaceMetadata } from "@/types/workspace";
+import type { WorkspaceSelection } from "./ProjectSidebar";
+import type { WorkspaceState } from "@/hooks/useWorkspaceAggregators";
+import type { Secret } from "@/types/secrets";
+import ProjectSidebar from "./ProjectSidebar";
+import { TitleBar } from "./TitleBar";
+
+const LeftSidebarContainer = styled.div<{ collapsed?: boolean }>`
+  width: ${(props) => (props.collapsed ? "32px" : "280px")};
+  height: 100vh;
+  background: #252526;
+  border-right: 1px solid #1e1e1e;
+  display: flex;
+  flex-direction: column;
+  flex-shrink: 0;
+  transition: width 0.2s ease;
+  overflow: hidden;
+`;
+
+interface LeftSidebarProps {
+  projects: Map<string, ProjectConfig>;
+  workspaceMetadata: Map<string, WorkspaceMetadata>;
+  selectedWorkspace: WorkspaceSelection | null;
+  onSelectWorkspace: (selection: WorkspaceSelection) => void;
+  onAddProject: () => void;
+  onAddWorkspace: (projectPath: string) => void;
+  onRemoveProject: (path: string) => void;
+  onRemoveWorkspace: (workspaceId: string) => Promise<{ success: boolean; error?: string }>;
+  onRenameWorkspace: (
+    workspaceId: string,
+    newName: string
+  ) => Promise<{ success: boolean; error?: string }>;
+  getWorkspaceState: (workspaceId: string) => WorkspaceState;
+  collapsed: boolean;
+  onToggleCollapsed: () => void;
+  onGetSecrets: (projectPath: string) => Promise<Secret[]>;
+  onUpdateSecrets: (projectPath: string, secrets: Secret[]) => Promise<void>;
+}
+
+export function LeftSidebar(props: LeftSidebarProps) {
+  const { collapsed, ...projectSidebarProps } = props;
+
+  return (
+    <LeftSidebarContainer collapsed={collapsed}>
+      {!collapsed && <TitleBar />}
+      <ProjectSidebar {...projectSidebarProps} collapsed={collapsed} />
+    </LeftSidebarContainer>
+  );
+}

src/components/ProjectSidebar.tsx

@@ -17,17 +17,12 @@ import SecretsModal from "./SecretsModal";
 import type { Secret } from "@/types/secrets";
 
 // Styled Components
-const SidebarContainer = styled.div<{ collapsed?: boolean }>`
-  width: ${(props) => (props.collapsed ? "32px" : "280px")};
-  height: 100vh;
-  background: #252526;
-  border-right: 1px solid #1e1e1e;
+const SidebarContent = styled.div`
   display: flex;
   flex-direction: column;
-  flex-shrink: 0;
-  font-family: var(--font-primary);
-  transition: width 0.2s ease;
+  flex: 1;
   overflow: hidden;
+  font-family: var(--font-primary);
 `;
 
 const SidebarHeader = styled.div`
@@ -563,7 +558,7 @@ const ProjectSidebar: React.FC<ProjectSidebarProps> = ({
   }, [selectedWorkspace, onAddWorkspace]);
 
   return (
-    <SidebarContainer collapsed={collapsed} role="navigation" aria-label="Projects">
+    <SidebarContent role="navigation" aria-label="Projects">
       {!collapsed && (
         <>
           <SidebarHeader>
@@ -794,7 +789,7 @@ const ProjectSidebar: React.FC<ProjectSidebarProps> = ({
           </RemoveErrorToast>,
           document.body
         )}
-    </SidebarContainer>
+    </SidebarContent>
   );
 };
 

src/components/TitleBar.tsx

@@ -0,0 +1,65 @@
+import React from "react";
+import styled from "@emotion/styled";
+import { VERSION } from "@/version";
+import { TooltipWrapper, Tooltip } from "./Tooltip";
+
+const TitleBarContainer = styled.div`
+  padding: 8px 16px;
+  background: #1e1e1e;
+  border-bottom: 1px solid #3c3c3c;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  font-family: var(--font-primary);
+  font-size: 11px;
+  color: #858585;
+  user-select: none;
+  flex-shrink: 0;
+`;
+
+const TitleText = styled.div`
+  font-weight: normal;
+  letter-spacing: 0.5px;
+`;
+
+const BuildInfo = styled.div`
+  font-size: 10px;
+  opacity: 0.7;
+  cursor: default;
+`;
+
+function formatUSDate(isoDate: string): string {
+  const date = new Date(isoDate);
+  const month = String(date.getUTCMonth() + 1).padStart(2, "0");
+  const day = String(date.getUTCDate()).padStart(2, "0");
+  const year = date.getUTCFullYear();
+  return `${month}/${day}/${year}`;
+}
+
+function formatExtendedTimestamp(isoDate: string): string {
+  const date = new Date(isoDate);
+  return date.toLocaleString("en-US", {
+    month: "long",
+    day: "numeric",
+    year: "numeric",
+    hour: "2-digit",
+    minute: "2-digit",
+    second: "2-digit",
+    timeZoneName: "short",
+  });
+}
+
+export function TitleBar() {
+  const buildDate = formatUSDate(VERSION.buildTime);
+  const extendedTimestamp = formatExtendedTimestamp(VERSION.buildTime);
+
+  return (
+    <TitleBarContainer>
+      <TitleText>cmux {VERSION.git_describe}</TitleText>
+      <TooltipWrapper>
+        <BuildInfo>{buildDate}</BuildInfo>
+        <Tooltip align="right">Built at {extendedTimestamp}</Tooltip>
+      </TooltipWrapper>
+    </TitleBarContainer>
+  );
+}