chore: refine configuration and setup scripts for improved usability

- Update README with minor text formatting
- Improve Smithery configuration command formatting
- Enhance macOS setup script with WebSocket URL conversion and security hardening

smithery.yaml

@@ -18,4 +18,11 @@ startCommand:
   commandFunction:
     # A function that produces the CLI command to start the MCP on stdio.
     |-
-    config => ({command: 'bun', args: ['--smol', 'run', 'start'], env: { HASS_TOKEN: config.hassToken, PORT: config.port.toString() }})
+    config => ({
+      command: 'bun', 
+      args: ['--smol', 'run', 'start'], 
+      env: { 
+        HASS_TOKEN: config.hassToken,
+        PORT: config.port.toString()
+      }
+    })