Merge db-migrations: Add Flask-Migrate support and clean up old migration system

security_headers.py

@@ -0,0 +1,40 @@
+"""
+Security headers middleware for Flask.
+Add this to ensure secure form submission and prevent security warnings.
+"""
+
+from flask import request
+
+def add_security_headers(response):
+    """Add security headers to all responses."""
+    
+    # Force HTTPS for all resources
+    if request.is_secure or not request.app.debug:
+        # Strict Transport Security - force HTTPS for 1 year
+        response.headers['Strict-Transport-Security'] = 'max-age=31536000; includeSubDomains'
+        
+        # Content Security Policy - allow forms to submit only over HTTPS
+        # Adjust this based on your needs
+        csp = (
+            "default-src 'self' https:; "
+            "script-src 'self' 'unsafe-inline' 'unsafe-eval' https:; "
+            "style-src 'self' 'unsafe-inline' https:; "
+            "img-src 'self' data: https:; "
+            "font-src 'self' data: https:; "
+            "form-action 'self' https:; "  # Forms can only submit to HTTPS
+            "upgrade-insecure-requests; "  # Upgrade any HTTP requests to HTTPS
+        )
+        response.headers['Content-Security-Policy'] = csp
+    
+    # Other security headers
+    response.headers['X-Content-Type-Options'] = 'nosniff'
+    response.headers['X-Frame-Options'] = 'SAMEORIGIN'
+    response.headers['X-XSS-Protection'] = '1; mode=block'
+    response.headers['Referrer-Policy'] = 'strict-origin-when-cross-origin'
+    
+    return response
+
+
+def init_security(app):
+    """Initialize security headers for the Flask app."""
+    app.after_request(add_security_headers)