Refactor code and enhance maintainability.

Author: abrar2030

code/backend/app.py

@@ -7,7 +7,7 @@
 import traceback
 import uuid
 from datetime import datetime, timezone
-from typing import Any, Dict, Tuple
+from typing import Any, Dict, Optional, Tuple
 
 import compat_stubs  # noqa: F401 - must be first
 
@@ -126,6 +126,21 @@ def before_request() -> None:
             f"[{g.request_id}] {request.method} {request.url} - IP: {request.remote_addr}"
         )
 
+    def _safe_jwt_identity() -> Optional[str]:
+        """Best-effort JWT identity lookup for audit logging.
+
+        get_jwt_identity() raises if the current request's JWT was never
+        successfully verified (missing, malformed, or expired token) - which
+        is expected for anonymous or failed-auth requests, not an error
+        worth logging. Swallowing just that lookup (rather than the whole
+        audit_service.log_api_request(...) call, as before) keeps the audit
+        trail intact for every request, including failed-auth ones.
+        """
+        try:
+            return get_jwt_identity()
+        except Exception:
+            return None
+
     @app.after_request
     def after_request(response: Any) -> Any:
         if hasattr(g, "start_time"):
@@ -143,12 +158,7 @@ def after_request(response: Any) -> Any:
                     response_time_ms=int(response_time),
                     ip_address=request.remote_addr,
                     user_agent=request.headers.get("User-Agent"),
-                    user_id=(
-                        get_jwt_identity()
-                        if hasattr(request, "headers")
-                        and "Authorization" in request.headers
-                        else None
-                    ),
+                    user_id=_safe_jwt_identity(),
                 )
             except Exception as e:
                 app.logger.error(f"Failed to create audit log: {e}")

web-frontend/index.html

@@ -4,17 +4,17 @@
     <meta charset="utf-8" />
     <link rel="icon" href="/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#3f51b5" />
+    <meta name="theme-color" content="#0D1220" />
     <meta
       name="description"
-      content="BlockScore - Decentralized Credit Scoring System"
+      content="BlockScore - AI-native credit scoring built on your on-chain and financial activity"
     />
     <link rel="apple-touch-icon" href="/logo192.png" />
     <link rel="manifest" href="/manifest.json" />
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
     <link
-      href="https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&family=Roboto:wght@300;400;500;700&family=Roboto+Mono&display=swap"
+      href="https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap"
       rel="stylesheet"
     />
     <title>BlockScore | Decentralized Credit Scoring</title>

web-frontend/public/manifest.json

@@ -1,6 +1,6 @@
 {
   "short_name": "BlockScore",
-  "name": "BlockScore - Decentralized Credit Scoring",
+  "name": "BlockScore - AI-native Credit Scoring",
   "icons": [
     {
       "src": "favicon.ico",
@@ -20,6 +20,6 @@
   ],
   "start_url": ".",
   "display": "standalone",
-  "theme_color": "#3f51b5",
-  "background_color": "#f5f5f5"
+  "theme_color": "#0D1220",
+  "background_color": "#F5F6FA"
 }