Revise README for kortex-mockups project

Updated project name and expanded README with directory structure and getting started guide.

Author: slemeur

README.md

@@ -1,2 +1,55 @@
-# kortex-spec
-Repository for live mockups and specifications for development of Kortex
+# kortex-mockups
+
+This repository is dedicated for live prototyping and UX explorations for Kortex.
+
+
+## 📁 Directory Structure
+
+```
+kortex-mockups/
+├── index.html                  # Landing page with welcome screen
+├── README.md                   # Project documentation
+│
+├── assets/                     # Shared resources
+│   ├── css/
+│   │   └── styles.css         # Global stylesheet (all UI styles)
+│   ├── js/
+│   │   └── scripts.js         # Shared JavaScript functions
+│   └── images/                # Shared images and icons
+│
+├── shared/                     # Shared components
+│   └── components/
+│       └── sidebar.html       # Reusable navigation sidebar (reference)
+│
+├── chat/                       # Chat section
+│   └── index.html             # Chat interface with AI conversations
+│
+├── knowledges/                 # Knowledge bases section (RAG)
+│   ├── index.html             # Knowledge bases list view
+│   └── details.html           # Knowledge base details view
+│
+├── mcp/                        # MCP servers section
+│   └── index.html             # MCP servers interface (placeholder)
+│
+├── flows/                      # Flows section
+│   └── index.html             # Workflow orchestration (placeholder)
+│
+├── extensions/                 # Extensions section
+│   └── index.html             # Extensions marketplace (placeholder)
+│
+└── settings/                   # Settings section
+    └── index.html             # Application settings (placeholder)
+```
+
+## 🚀 Getting Started
+
+1. Open `index.html` in a web browser to see the welcome screen
+2. Navigate to different sections using:
+   - Sidebar navigation (consistent across all pages)
+   - Welcome screen navigation cards
+3. Each section maintains:
+   - Consistent left sidebar navigation
+   - Active state highlighting (gray background + purple left border)
+   - Hover states (purple background)
+   - Shared styling from `assets/css/styles.css`
+