Initial Phase 1 Alpha build for app.blackroad.io

This commit establishes the foundation for the BlackRoad OS web application,
the primary SaaS product for human-AI collaboration.

1. Authentication System
   - Login and signup pages with email/password
   - Zustand state management for auth
   - Workspace-based user model
   - Protected route handling

2. App Shell
   - Sidebar navigation (Conversations, Agents, Governance, Account)
   - App header with workspace and user info
   - Layout with authentication guards
   - Responsive design with Tailwind CSS

3. Conversation Interface
   - Chat UI with message bubbles
   - User and assistant message rendering
   - Real-time timestamp display
   - Loading states and animations
   - Placeholder for WebSocket integration

4. Core Dependencies
   - Next.js 16 with App Router
   - Zustand for state management
   - TanStack Query (ready for API calls)
   - Lucide React icons
   - Tailwind CSS 4 with custom utilities

5. Workspace Management
   - Multi-tenant workspace structure
   - Workspace store with Zustand
   - Plan-based workspace model (Free, Pro, Enterprise)

Structure:
app/
  ├── (auth)/          # Authentication routes
  │   ├── login/
  │   └── signup/
  ├── (app)/           # Protected app routes
  │   ├── conversations/[id]/
  │   ├── workspace/
  │   └── layout.tsx
  └── page.tsx         # Redirects to login

components/
  ├── Sidebar.tsx      # Main navigation
  └── AppHeader.tsx    # Workspace header

stores/
  ├── auth-store.ts    # Authentication state
  └── workspace-store.ts

lib/
  └── cn.ts            # Tailwind merge utility

Next Steps:
- Integrate WebSocket streaming for real-time AI responses
- Connect to BlackRoad OS backend API
- Add agent management interface
- Build governance center UI
- Deploy to app.blackroad.io

Phase 1 Alpha Target: Jan 25, 2026

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

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

app/(app)/workspace/page.tsx

@@ -0,0 +1,88 @@
+'use client';
+
+import { useState } from 'react';
+import { MessageSquare, Plus } from 'lucide-react';
+
+interface Conversation {
+  id: string;
+  title: string;
+  lastMessage: string;
+  timestamp: string;
+}
+
+export default function WorkspacePage() {
+  const [conversations] = useState<Conversation[]>([
+    {
+      id: '1',
+      title: 'Getting Started with BlackRoad OS',
+      lastMessage: 'How can I help you today?',
+      timestamp: '2 hours ago',
+    },
+    {
+      id: '2',
+      title: 'Project Planning',
+      lastMessage: 'Let me summarize the key tasks...',
+      timestamp: 'Yesterday',
+    },
+  ]);
+
+  return (
+    <div className="h-full p-6">
+      <div className="max-w-7xl mx-auto">
+        <div className="mb-8">
+          <h1 className="text-3xl font-semibold text-gray-900 mb-2">
+            Conversations
+          </h1>
+          <p className="text-gray-600">
+            Continue your conversations with Lucidia or start a new one
+          </p>
+        </div>
+
+        {/* Empty state or conversation list */}
+        {conversations.length === 0 ? (
+          <div className="flex flex-col items-center justify-center py-20">
+            <div className="h-24 w-24 rounded-full bg-gray-100 flex items-center justify-center mb-6">
+              <MessageSquare className="h-12 w-12 text-gray-400" />
+            </div>
+            <h3 className="text-xl font-semibold text-gray-900 mb-2">
+              No conversations yet
+            </h3>
+            <p className="text-gray-600 mb-6 text-center max-w-md">
+              Start your first conversation with Lucidia to begin collaborating on your projects
+            </p>
+            <button className="flex items-center gap-2 px-6 py-3 bg-blue-800 hover:bg-blue-700 text-white rounded-md font-medium transition-colors">
+              <Plus className="h-5 w-5" />
+              New Conversation
+            </button>
+          </div>
+        ) : (
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+            {conversations.map((conversation) => (
+              <div
+                key={conversation.id}
+                className="bg-white border border-gray-200 rounded-lg p-6 hover:border-blue-800 hover:shadow-md transition-all cursor-pointer"
+              >
+                <div className="flex items-start gap-4">
+                  <div className="h-10 w-10 rounded-full bg-gradient-to-br from-blue-800 to-blue-600 flex items-center justify-center text-white flex-shrink-0">
+                    <MessageSquare className="h-5 w-5" />
+                  </div>
+                  <div className="flex-1 min-w-0">
+                    <h3 className="font-semibold text-gray-900 mb-1 truncate">
+                      {conversation.title}
+                    </h3>
+                    <p className="text-sm text-gray-600 line-clamp-2 mb-2">
+                      {conversation.lastMessage}
+                    </p>
+                    <p className="text-xs text-gray-500">
+                      {conversation.timestamp}
+                    </p>
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}