Add standalone exe usage to README

web/README.md

@@ -18,6 +18,15 @@ Or install manually: `bun add -g @openchamber/web` (or npm, pnpm, yarn).
 
 > **Prerequisites:** [OpenCode CLI](https://opencode.ai) installed, Node.js 20+.
 
+## Standalone Executable (No dependencies)
+
+Download the standalone `.exe` file - no installation required, no Node.js needed.
+
+```bash
+./XCOpenCodeWeb.exe              # Start on port 3000
+./XCOpenCodeWeb.exe --port 8080  # Custom port
+```
+
 ## Usage
 
 ```bash