Fix Interactive Route Map: Create MapRoute records from GPX files

- Create MapRoute database records for all GPX files for map visualization
- Populate route statistics (distance, elevation, coordinates) from GPX parsing
- Update GPX file statistics to mirror MapRoute data for post detail pages
- Enable /community/api/routes endpoint to return proper route data for map iframe
- Fix post detail page GPX statistics display

This resolves the issue where the community map showed '2 routes discovered'
but routes weren't actually rendering on the Leaflet.js map visualization.

Changes:
- Dockerfile: Updated init script paths and added migrate-db call
- app/__init__.py: Added admin user auto-creation with error handling
- app/routes/community.py: Added debug logging and API route for map data
- docker-compose.yml: Simplified to use .env for environment variables
- run.py: Added comprehensive database schema migration command

app/routes/community.py

@@ -15,6 +15,32 @@ import gpxpy
 
 community = Blueprint('community', __name__)
 
+@community.route('/debug')
+def debug():
+    """Debug endpoint to check posts"""
+    posts = Post.query.filter_by(published=True).order_by(Post.created_at.desc()).paginate(
+        page=1, per_page=12, error_out=False
+    )
+    
+    debug_info = {
+        'total_posts': posts.total,
+        'items_count': len(posts.items),
+        'pages': posts.pages,
+        'posts': []
+    }
+    
+    for post in posts.items:
+        debug_info['posts'].append({
+            'id': post.id,
+            'title': post.title,
+            'published': post.published,
+            'author': post.author.nickname if post.author else None,
+            'images_count': post.images.count(),
+            'media_folder': post.media_folder
+        })
+    
+    return jsonify(debug_info)
+
 @community.route('/')
 def index():
     """Community main page with map and posts"""
@@ -26,6 +52,11 @@ def index():
     # Get posts with GPX files for map display
     posts_with_routes = Post.query.filter_by(published=True).join(GPXFile).all()
     
+    # Debug logging
+    current_app.logger.info(f"Community index: Found {posts.total} total posts, {len(posts.items)} on page {page}")
+    for post in posts.items:
+        current_app.logger.info(f"  - Post {post.id}: {post.title}, images: {post.images.count()}")
+    
     return render_template('community/index.html', posts=posts, posts_with_routes=posts_with_routes)
 
 @community.route('/test-map')