feat(examples): Add video-resource-server example

Demonstrates serving binary content (video) via MCP resources using the
base64 blob pattern:

1. Server fetches video from CDN
2. Returns as base64 blob via `videos://{id}` resource template
3. Widget fetches resource and plays in `<video>` element

Includes multiple video sizes for testing (1MB to 150MB).

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

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

examples/video-resource-server/README.md

@@ -0,0 +1,22 @@
+# Video Resource Server
+
+Demonstrates serving binary content (video) via MCP resources using the base64 blob pattern.
+
+## Quick Start
+
+```bash
+npm install
+npm run dev
+```
+
+## Tools
+
+- **play_video** - Plays a video loaded via MCP resource
+  - `videoId`: Choose from various sizes (`bunny-1mb`, `bunny-5mb`, `bunny-10mb`, etc.)
+
+## How It Works
+
+1. The `play_video` tool returns a `videoUri` pointing to an MCP resource
+2. The widget fetches the resource via `resources/read`
+3. The server fetches the video from CDN and returns it as a base64 blob
+4. The widget decodes the blob and plays it in a `<video>` element