Restore original PNG logo in Space via base64 static asset

app.py

@@ -1,12 +1,13 @@
 import os
 import sys
+import base64
 import urllib.parse
 from datetime import datetime
 from typing import Any
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.staticfiles import StaticFiles
-from fastapi.responses import FileResponse
+from fastapi.responses import FileResponse, Response
 from pydantic import BaseModel, Field
 import uvicorn
 
@@ -36,9 +37,11 @@ REPO_ID = "Krishkanth/krish-mind-mobile"
 MODEL_FILENAME = "krish-mind-mobile.gguf"
 BASE_DIR = os.path.dirname(__file__)
 STATIC_DIR = os.path.join(BASE_DIR, "static")
+LOGO_B64_FILE = os.path.join(STATIC_DIR, "logo_png_base64.txt")
 default_clean_data = os.path.join(BASE_DIR, "data", "krce_college_data_clean.jsonl")
 default_legacy_data = os.path.join(BASE_DIR, "data", "krce_college_data.jsonl")
 DATA_FILE = default_clean_data if os.path.exists(default_clean_data) else default_legacy_data
+_logo_png_cache: bytes | None = None
 
 # --- Load GGUF Model ---
 print(f"\n⏳ Downloading/Loading model from {REPO_ID}...")
@@ -95,8 +98,14 @@ async def root():
 
 @app.get("/logo.png")
 async def logo():
-    # Backward-compatible route: serve SVG logo even when clients request /logo.png.
-    return FileResponse(os.path.join(STATIC_DIR, "logo.svg"), media_type="image/svg+xml")
+    global _logo_png_cache
+    if _logo_png_cache is None:
+        if os.path.exists(LOGO_B64_FILE):
+            with open(LOGO_B64_FILE, "r", encoding="ascii") as handle:
+                _logo_png_cache = base64.b64decode(handle.read().strip())
+        else:
+            return FileResponse(os.path.join(STATIC_DIR, "logo.svg"), media_type="image/svg+xml")
+    return Response(content=_logo_png_cache, media_type="image/png")
 
 @app.get("/logo.svg")
 async def logo_svg():

static/index.html

@@ -1286,7 +1286,7 @@
                         <line x1="3" y1="18" x2="21" y2="18"></line>
                     </svg>
                 </button>
-                <img src="/static/logo.svg" alt="Krish Mind" class="logo-img">
+                <img src="/logo.png" alt="Krish Mind" class="logo-img">
             </div>
             <div class="header-actions">
                 <button class="icon-btn" onclick="toggleTheme()" title="Toggle theme">
@@ -1307,7 +1307,7 @@
         <div class="chat-container" id="chatContainer">
             <!-- Welcome Screen -->
             <div class="welcome-screen" id="welcomeScreen">
-                <img src="/static/logo.svg" alt="Krish Mind" class="welcome-logo">
+                <img src="/logo.png" alt="Krish Mind" class="welcome-logo">
                 <h1 class="welcome-title">Hello! I'm Krish Mind</h1>
                 <p class="welcome-subtitle">Your AI assistant, developed by Krish CS</p>
                 <div class="suggestions-grid">