diff --git a/README.md b/README.md
index cf20a9b9..132f1cc0 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
 <p align="center">
   <img src="https://img.shields.io/badge/platform-Windows%20%7C%20macOS%20%7C%20Linux-lightgrey?style=flat-square" alt="Platform" />
   <img src="https://img.shields.io/badge/electron-40+-47848F?style=flat-square&logo=electron&logoColor=white" alt="Electron" />
-  <img src="https://img.shields.io/badge/node-18+-339933?style=flat-square&logo=node.js&logoColor=white" alt="Node.js" />
+  <img src="https://img.shields.io/badge/node-20.11.0-339933?style=flat-square&logo=node.js&logoColor=white" alt="Node.js" />
   <img src="https://img.shields.io/badge/PRs-welcome-brightgreen?style=flat-square" alt="PRs Welcome" />
 </p>
 
@@ -159,9 +159,12 @@ for step-by-step instructions on both platforms and how to handle unsigned-app p
 
 ### Developers — Build from Source
 
+Recommended Node version is `20.11.0` (see `.nvmrc`).
+
 ```bash
 git clone https://github.com/iLevyTate/StratoSortCore.git
 cd StratoSortCore
+nvm use
 npm ci
 npm run dev
 ```
@@ -210,6 +213,7 @@ See **[SECURITY.md](SECURITY.md)** for the complete security policy.
 | **[Install Guide](docs/INSTALL_GUIDE.md)**         | End-user install (Windows & Mac, no CLI) |
 | **[User Guide](docs/USER_GUIDE.md)**               | Feature walkthrough for everyday use     |
 | **[Beta Tester Guide](docs/BETA_TESTER_GUIDE.md)** | Testing + bug reporting for contributors |
+| **[E2E Walkthrough](docs/E2E_WALKTHROUGH.md)**     | Visual end-to-end walkthrough (UI/media) |
 | **[Getting Started](docs/GETTING_STARTED.md)**     | Developer setup and build guide          |
 | **[Architecture](docs/ARCHITECTURE.md)**           | System design and data flow              |
 | **[Graph Features](docs/FEATURES_GRAPH.md)**       | Knowledge Graph capabilities             |
diff --git a/docs/README.md b/docs/README.md
index 4b50b121..171f85f8 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -8,6 +8,7 @@ find the right documentation for your needs.
 | Document                                                 | Description                                           | Audience       |
 | -------------------------------------------------------- | ----------------------------------------------------- | -------------- |
 | [CONFIG.md](./CONFIG.md)                                 | Installation, dependencies & configuration            | All users      |
+| [E2E_WALKTHROUGH.md](./E2E_WALKTHROUGH.md)               | End-to-end app walkthrough (screenshots + videos)     | All users      |
 | [ARCHITECTURE.md](./ARCHITECTURE.md)                     | High-level system design and data flow                | All developers |
 | [LEARNING_GUIDE.md](./LEARNING_GUIDE.md)                 | Codebase learning guide with glossary & code examples | New developers |
 | [CODE_QUALITY_STANDARDS.md](./CODE_QUALITY_STANDARDS.md) | Coding standards and style guide                      | All developers |
@@ -73,6 +74,7 @@ docs/
 ├── CODE_QUALITY_STANDARDS.md            # Style guide
 ├── CONFIG.md                            # Environment variables
 ├── DI_PATTERNS.md                       # Dependency injection
+├── E2E_WALKTHROUGH.md                   # End-to-end UI walkthrough (screenshots + videos)
 ├── ERROR_HANDLING_GUIDE.md              # Error patterns
 ├── FEATURES_GRAPH.md                    # Knowledge Graph features
 ├── LEARNING_GUIDE.md                    # Developer onboarding (glossary + examples)
diff --git a/test/e2e/README.md b/test/e2e/README.md
index 3b5a22ae..376033eb 100644
--- a/test/e2e/README.md
+++ b/test/e2e/README.md
@@ -15,6 +15,7 @@ This test suite covers full user flows through the application UI, including:
 ## Prerequisites
 
 1. **Node.js 18+** - Required for Playwright and Electron
+   - Recommended: `20.11.0` (see `.nvmrc`)
 2. **Build the renderer** - Run `npm run build:dev` before testing
 3. **Models downloaded (optional)** - Required for AI analysis tests, but tests handle missing
    models gracefully