docs: Add MCP architecture diagram to README

Author: JuanCS-Dev

README.md

@@ -41,7 +41,7 @@ PROMETHEUS is not just a bot; it's a complete ecosystem covering all Hackathon t
     *   **Core**: `jdev_cli/core/mcp.py` implements the full MCP spec.
     *   **Server**: `jdev_cli/cli_mcp.py` acts as a compliant MCP server.
     *   **Client**: The TUI connects to any MCP server (Blaxel, Local, etc.).
-    *   *[📸 ASSET NEEDED: MCP Diagram showing Client <-> Server communication]*
+    *   ![MCP Architecture](assets/Screenshot%20from%202025-11-28%2016-15-12.png)
 
 2.  **CLI (Command Line Interface)**:
     *   **Tool**: `jdev` is a Rust-inspired Python CLI.