fix: enable 'goose://' handler for debian systems (#3952)

Signed-off-by: Jason Cochard <cochard@protonmail.com>

BUILDING_LINUX.md

@@ -145,12 +145,13 @@ Create `~/.local/share/applications/goose.desktop`:
 [Desktop Entry]
 Name=Goose AI Agent
 Comment=Local AI agent for development tasks
-Exec=/path/to/goose/ui/desktop/out/Goose-linux-x64/Goose
+Exec=/path/to/goose/ui/desktop/out/Goose-linux-x64/Goose %U
 Icon=/path/to/goose/ui/desktop/out/Goose-linux-x64/resources/app.asar.unpacked/src/images/icon.png
 Terminal=false
 Type=Application
 Categories=Development;Utility;
 StartupNotify=true
+MimeType=x-scheme-handler/goose
 ```
 
 ### System-wide Installation

ui/desktop/forge.config.ts

@@ -69,7 +69,8 @@ module.exports = {
         bin: 'Goose',
         maintainer: 'Block, Inc.',
         homepage: 'https://block.github.io/goose/',
-        categories: ['Development']
+        categories: ['Development'],
+        mimeType: ['x-scheme-handler/goose']
       },
     },
     {