Complete v2.0 transformation: Production-ready Flask application

Major Changes:
- Migrated from prototype to production architecture
- Implemented modular Flask app with models/services/web layers
- Added Docker containerization with docker-compose
- Switched to Pipenv for dependency management
- Built advanced parser extracting 63 real activities from INDEX_MASTER
- Implemented SQLite FTS5 full-text search
- Created minimalist, responsive web interface
- Added comprehensive documentation and deployment guides

Technical Improvements:
- Clean separation of concerns (models, services, web)
- Enhanced database schema with FTS5 indexing
- Dynamic filters populated from real data
- Production-ready configuration management
- Security best practices implementation
- Health monitoring and API endpoints

Removed Legacy Files:
- Old src/ directory structure
- Static requirements.txt (replaced by Pipfile)
- Test and debug files
- Temporary cache files

Current Status:
- 63 activities indexed across 8 categories
- Full-text search operational
- Docker deployment ready
- Production documentation complete

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

Co-Authored-By: Claude <noreply@anthropic.com>

app/templates/404.html

@@ -0,0 +1,24 @@
+{% extends "base.html" %}
+
+{% block title %}Pagină nu a fost găsită - INDEX Sistem Jocuri{% endblock %}
+
+{% block content %}
+<div class="error-page">
+    <div class="error-content">
+        <h1 class="error-title">404</h1>
+        <h2 class="error-subtitle">Pagina nu a fost găsită</h2>
+        <p class="error-message">
+            Ne pare rău, dar pagina pe care o căutați nu există sau a fost mutată.
+        </p>
+        
+        <div class="error-actions">
+            <a href="{{ url_for('main.index') }}" class="btn btn-primary">
+                Întoarce-te la căutare
+            </a>
+            <a href="javascript:history.back()" class="btn btn-secondary">
+                Pagina anterioară
+            </a>
+        </div>
+    </div>
+</div>
+{% endblock %}