refactor: Clean up GitHub for user-focused experience

- Remove outdated/redundant directories from GitHub:
  * src/ (development files, locally modified, not current)
  * public/ (duplicate structure, redundant)
  * python-gateway/ (development backend, not needed for users)
  * package.json, tsconfig.json, webpack.config.js (build configs)
- Keep only essential files for users:
  * README.md & README_DE.md (documentation)
  * LICENSE (legal)
  * releases/beta/ (actual downloads)
- Update .gitignore to maintain clean user-focused repository
- All removed files remain available locally for development
- GitHub now focuses on what users actually need: downloads & docs

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

Co-Authored-By: Claude <[email protected]>

Author: web-werkstatt

.gitignore

@@ -149,35 +149,22 @@ secrets/
 *proprietary*
 
 # =============================================================================
-# 📂 ALLOW PUBLIC CONTENT ONLY
+# 📂 ALLOW ESSENTIAL FILES ONLY (USER-FOCUSED GITHUB)
 # =============================================================================
-# Only allow specific public directories
+# Only allow essential files for GitHub users
 
-# Public Source Code
-!public/
-!public/src/
-!public/src/**
-!public/docs/
-!public/docs/**
-!public/assets/
-!public/assets/**
-
-# Public Releases
-!public/releases/community/
-!public/releases/community/**
-!public/releases/stable/
-!public/releases/stable/**
+# Essential Documentation
+!README.md
+!README_DE.md
+!LICENSE
 
 # Community Beta Releases
 !releases/beta/
 !releases/beta/**
 
-# Public Configuration
-!public/README.md
-!public/package.json
-!public/tsconfig.json
-!public/LICENSE
-!public/webpack.config.js
+# Essential Assets (if needed)
+!assets/screenshots/
+!assets/diagrams/
 
 # =============================================================================
 # 🗑️ TEMPORARY & BUILD FILES