logo fixes

app.py

@@ -671,13 +671,28 @@ def call_enhanced_model_with_rag(prompt: str) -> tuple[Optional[str], float]:
 
 def load_logo() -> str:
     """Load and encode the SUPRA logo."""
-    logo_path = Path(__file__).parent / "assets" / "supra_logo.png"
-    if logo_path.exists():
-        with open(logo_path, "rb") as f:
-            logo_data = f.read()
-        logo_b64 = base64.b64encode(logo_data).decode()
-        return f"data:image/png;base64,{logo_b64}"
-    return None
+    # Try multiple possible paths
+    possible_paths = [
+        Path(__file__).parent / "assets" / "supra_logo.png",
+        Path(__file__).parent / "assets" / "supra_logo_full.png",
+        Path("assets/supra_logo.png"),
+        Path("assets/supra_logo_full.png"),
+    ]
+    
+    for logo_path in possible_paths:
+        if logo_path.exists():
+            try:
+                with open(logo_path, "rb") as f:
+                    logo_data = f.read()
+                logo_b64 = base64.b64encode(logo_data).decode()
+                logger.info(f"✅ Loaded logo from: {logo_path}")
+                return f"data:image/png;base64,{logo_b64}"
+            except Exception as e:
+                logger.warning(f"⚠️ Could not load logo from {logo_path}: {e}")
+                continue
+    
+    logger.warning("⚠️ Logo file not found in any expected location")
+    return ""  # Return empty string instead of None to avoid "None" in HTML
 
 def main():
     # Animated background blobs - matching launch page
@@ -699,7 +714,7 @@ def main():
         <div class="main-header">
             <div style="display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.5rem;">
                 <div class="float-animation">
-                    <img src="{logo_b64}" class="glow-box" style="width: 128px; height: 128px; object-fit: contain; margin: 0 auto;" />
+                    {"<img src=\"" + logo_b64 + "\" class=\"glow-box\" style=\"width: 128px; height: 128px; object-fit: contain; margin: 0 auto;\" />" if logo_b64 else "<div style=\"width: 128px; height: 128px;\"></div>"}
                 </div>
                 <div style="text-align: center;">
                     <h1 class="supra-title gradient-text">Intelligence Unchained</h1>