refactor: create shared AppHeader component for consistent navigation across all pages

**Problem:**
- Each page had different header implementations with varying navigation links
- Inconsistent user experience across homepage, tools, playground, and publish pages
- Duplicate header code throughout the application

**Solution:**
- Created `AppHeader` component (apps/web/src/components/AppHeader.tsx) with consistent navigation:
  - TPMJS logo linking to homepage
  - Tools, Playground, and Publish Tool links
  - GitHub icon link
  - Sticky header with medium size
- Updated all pages to use the shared component:
  - apps/web/src/app/page.tsx (homepage)
  - apps/web/src/app/tool/tool-search/page.tsx (tools search)
  - apps/web/src/app/playground/page.tsx (component playground)
  - apps/web/src/app/publish/page.tsx (publish guide)
  - apps/web/src/app/tool/[...slug]/page.tsx (tool detail pages)

**Benefits:**
- Consistent header across all pages
- Single source of truth for navigation
- Easier to maintain and update navigation links
- Improved user experience with predictable navigation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/web/src/app/page.tsx

@@ -2,9 +2,8 @@ import { prisma } from '@tpmjs/db';
 import { Badge } from '@tpmjs/ui/Badge/Badge';
 import { Button } from '@tpmjs/ui/Button/Button';
 import { Container } from '@tpmjs/ui/Container/Container';
-import { Header } from '@tpmjs/ui/Header/Header';
 import Link from 'next/link';
-import { ThemeToggle } from '../components/ThemeToggle';
+import { AppHeader } from '../components/AppHeader';
 import { HeroSection } from '../components/home/HeroSection';
 
 async function getHomePageData() {
@@ -93,43 +92,7 @@ export default async function HomePage(): Promise<React.ReactElement> {
   const data = await getHomePageData();
   return (
     <div className="min-h-screen flex flex-col">
-      {/* Header */}
-      <Header
-        title={
-          <Link
-            href="/"
-            className="text-foreground hover:text-foreground text-xl md:text-2xl font-bold uppercase tracking-tight"
-          >
-            TPMJS
-          </Link>
-        }
-        size="md"
-        sticky={true}
-        actions={
-          <div className="flex items-center gap-4">
-            <Link href="/tool/tool-search">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Tools
-              </Button>
-            </Link>
-            <Link href="/playground">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Playground
-              </Button>
-            </Link>
-            <Link href="/publish">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Publish
-              </Button>
-            </Link>
-            <Button variant="secondary" size="sm">
-              Sign In
-            </Button>
-            <Button size="sm">Sign Up</Button>
-            <ThemeToggle />
-          </div>
-        }
-      />
+      <AppHeader />
 
       <main className="flex-1">
         {/* Hero Section - Dithered Design */}

apps/web/src/app/playground/page.tsx

@@ -14,7 +14,6 @@ import { Checkbox } from '@tpmjs/ui/Checkbox/Checkbox';
 import { CodeBlock } from '@tpmjs/ui/CodeBlock/CodeBlock';
 import { Container } from '@tpmjs/ui/Container/Container';
 import { FormField } from '@tpmjs/ui/FormField/FormField';
-import { Header } from '@tpmjs/ui/Header/Header';
 import { Icon } from '@tpmjs/ui/Icon/Icon';
 import { Input } from '@tpmjs/ui/Input/Input';
 import { Label } from '@tpmjs/ui/Label/Label';
@@ -26,9 +25,8 @@ import { Slider } from '@tpmjs/ui/Slider/Slider';
 import { Switch } from '@tpmjs/ui/Switch/Switch';
 import { Tabs } from '@tpmjs/ui/Tabs/Tabs';
 import { Textarea } from '@tpmjs/ui/Textarea/Textarea';
-import Link from 'next/link';
 import { useState } from 'react';
-import { ThemeToggle } from '../../components/ThemeToggle';
+import { AppHeader } from '~/components/AppHeader';
 
 // Disable static generation for this page due to context provider requirements
 export const dynamic = 'force-dynamic';
@@ -50,26 +48,7 @@ export default function PlaygroundPage() {
 
   return (
     <div className="min-h-screen flex flex-col dotted-grid-background">
-      {/* Header */}
-      <Header
-        title={
-          <Link href="/" className="text-foreground hover:text-foreground">
-            TPMJS Playground
-          </Link>
-        }
-        size="md"
-        sticky={true}
-        actions={
-          <div className="flex items-center gap-4">
-            <Link href="/">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Home
-              </Button>
-            </Link>
-            <ThemeToggle />
-          </div>
-        }
-      />
+      <AppHeader />
 
       <main className="flex-1 py-12 relative">
         <div className="absolute inset-0 bg-background/95 -z-10" />

apps/web/src/app/publish/page.tsx

@@ -1,9 +1,8 @@
 import { Button } from '@tpmjs/ui/Button/Button';
 import { CodeBlock } from '@tpmjs/ui/CodeBlock/CodeBlock';
 import { Container } from '@tpmjs/ui/Container/Container';
-import { Header } from '@tpmjs/ui/Header/Header';
 import Link from 'next/link';
-import { ThemeToggle } from '../../components/ThemeToggle';
+import { AppHeader } from '~/components/AppHeader';
 
 export const metadata = {
   title: 'Publish a Tool | TPMJS',
@@ -13,39 +12,7 @@ export const metadata = {
 export default function PublishPage(): React.ReactElement {
   return (
     <div className="min-h-screen flex flex-col bg-background">
-      {/* Header */}
-      <Header
-        title={
-          <Link
-            href="/"
-            className="text-foreground hover:text-foreground text-xl md:text-2xl font-bold uppercase tracking-tight"
-          >
-            TPMJS
-          </Link>
-        }
-        size="md"
-        sticky={true}
-        actions={
-          <div className="flex items-center gap-4">
-            <Link href="/tool/tool-search">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Tools
-              </Button>
-            </Link>
-            <Link href="/playground">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Playground
-              </Button>
-            </Link>
-            <Link href="/publish">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Publish
-              </Button>
-            </Link>
-            <ThemeToggle />
-          </div>
-        }
-      />
+      <AppHeader />
 
       <main className="flex-1 py-16">
         <Container size="lg" padding="lg">

apps/web/src/app/tool/[...slug]/page.tsx

@@ -5,14 +5,13 @@ import { Button } from '@tpmjs/ui/Button/Button';
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@tpmjs/ui/Card/Card';
 import { CodeBlock } from '@tpmjs/ui/CodeBlock/CodeBlock';
 import { Container } from '@tpmjs/ui/Container/Container';
-import { Header } from '@tpmjs/ui/Header/Header';
 import { Icon } from '@tpmjs/ui/Icon/Icon';
 import { ProgressBar } from '@tpmjs/ui/ProgressBar/ProgressBar';
 import Link from 'next/link';
 import { useEffect, useState } from 'react';
-import { Markdown } from '../../../components/Markdown';
-import { ThemeToggle } from '../../../components/ThemeToggle';
-import { ToolPlayground } from '../../../components/ToolPlayground';
+import { AppHeader } from '~/components/AppHeader';
+import { Markdown } from '~/components/Markdown';
+import { ToolPlayground } from '~/components/ToolPlayground';
 
 interface Tool {
   id: string;
@@ -112,19 +111,7 @@ export default function ToolDetailPage({
   if (loading) {
     return (
       <div className="min-h-screen bg-background">
-        <Header
-          title={
-            <Link
-              href="/"
-              className="text-foreground hover:text-foreground text-xl md:text-2xl font-bold uppercase tracking-tight"
-            >
-              TPMJS
-            </Link>
-          }
-          actions={<ThemeToggle />}
-          sticky={true}
-          size="md"
-        />
+        <AppHeader />
         <Container size="xl" padding="md" className="py-12">
           <div className="text-center text-foreground-secondary">Loading tool...</div>
         </Container>
@@ -135,19 +122,7 @@ export default function ToolDetailPage({
   if (error || !tool) {
     return (
       <div className="min-h-screen bg-background">
-        <Header
-          title={
-            <Link
-              href="/"
-              className="text-foreground hover:text-foreground text-xl md:text-2xl font-bold uppercase tracking-tight"
-            >
-              TPMJS
-            </Link>
-          }
-          actions={<ThemeToggle />}
-          sticky={true}
-          size="md"
-        />
+        <AppHeader />
         <Container size="xl" padding="md" className="py-12">
           <div className="text-center">
             <p className="text-red-500 text-lg mb-4">{error || 'Tool not found'}</p>
@@ -164,39 +139,7 @@ export default function ToolDetailPage({
 
   return (
     <div className="min-h-screen bg-background">
-      {/* Header */}
-      <Header
-        title={
-          <Link
-            href="/"
-            className="text-foreground hover:text-foreground text-xl md:text-2xl font-bold uppercase tracking-tight"
-          >
-            TPMJS
-          </Link>
-        }
-        actions={
-          <div className="flex items-center gap-3">
-            <Link href="/tool/tool-search">
-              <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
-                Browse Tools
-              </Button>
-            </Link>
-            {tool.npmRepository && (
-              <a
-                href={tool.npmRepository.url.replace('git+', '').replace('.git', '')}
-                target="_blank"
-                rel="noopener noreferrer"
-                className="text-foreground-secondary hover:text-foreground transition-colors"
-              >
-                <Icon icon="github" size="md" />
-              </a>
-            )}
-            <ThemeToggle />
-          </div>
-        }
-        sticky={true}
-        size="md"
-      />
+      <AppHeader />
 
       {/* Main content */}
       <Container size="xl" padding="md" className="py-8">

apps/web/src/app/tool/tool-search/page.tsx

@@ -12,7 +12,6 @@ import {
 } from '@tpmjs/ui/Card/Card';
 import { CodeBlock } from '@tpmjs/ui/CodeBlock/CodeBlock';
 import { Container } from '@tpmjs/ui/Container/Container';
-import { Header } from '@tpmjs/ui/Header/Header';
 import { Icon } from '@tpmjs/ui/Icon/Icon';
 import { Input } from '@tpmjs/ui/Input/Input';
 import { ProgressBar } from '@tpmjs/ui/ProgressBar/ProgressBar';
@@ -20,6 +19,7 @@ import { Select } from '@tpmjs/ui/Select/Select';
 import { Tabs } from '@tpmjs/ui/Tabs/Tabs';
 import Link from 'next/link';
 import { useEffect, useState } from 'react';
+import { AppHeader } from '~/components/AppHeader';
 
 interface Tool {
   id: string;
@@ -113,37 +113,7 @@ export default function ToolSearchPage(): React.ReactElement {
 
   return (
     <div className="min-h-screen bg-background">
-      {/* Header */}
-      <Header
-        title={
-          <div className="flex items-center gap-2">
-            <span className="text-2xl font-bold">TPMJS</span>
-            <Badge variant="outline" size="sm">
-              Beta
-            </Badge>
-          </div>
-        }
-        actions={
-          <div className="flex items-center gap-3">
-            <Button variant="ghost" size="sm">
-              Docs
-            </Button>
-            <a
-              href="https://github.com/tpmjs/tpmjs"
-              target="_blank"
-              rel="noopener noreferrer"
-              className="text-foreground-secondary hover:text-foreground transition-colors"
-            >
-              <Icon icon="github" size="md" />
-            </a>
-            <Button variant="default" size="sm">
-              Publish Tool
-            </Button>
-          </div>
-        }
-        sticky={true}
-        size="md"
-      />
+      <AppHeader />
 
       {/* Main content */}
       <Container size="xl" padding="md" className="py-8">

apps/web/src/components/AppHeader.tsx

@@ -0,0 +1,53 @@
+'use client';
+
+import { Button } from '@tpmjs/ui/Button/Button';
+import { Header } from '@tpmjs/ui/Header/Header';
+import { Icon } from '@tpmjs/ui/Icon/Icon';
+import Link from 'next/link';
+
+/**
+ * Shared application header used across all pages
+ */
+export function AppHeader(): React.ReactElement {
+  return (
+    <Header
+      title={
+        <Link
+          href="/"
+          className="text-foreground hover:text-foreground text-xl md:text-2xl font-bold uppercase tracking-tight"
+        >
+          TPMJS
+        </Link>
+      }
+      size="md"
+      sticky={true}
+      actions={
+        <div className="flex items-center gap-4">
+          <Link href="/tool/tool-search">
+            <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
+              Tools
+            </Button>
+          </Link>
+          <Link href="/playground">
+            <Button variant="ghost" size="sm" className="text-foreground hover:text-foreground">
+              Playground
+            </Button>
+          </Link>
+          <a
+            href="https://github.com/tpmjs/tpmjs"
+            target="_blank"
+            rel="noopener noreferrer"
+            className="text-foreground hover:text-foreground transition-colors"
+          >
+            <Icon icon="github" size="md" />
+          </a>
+          <Link href="/publish">
+            <Button variant="default" size="sm">
+              Publish Tool
+            </Button>
+          </Link>
+        </div>
+      }
+    />
+  );
+}