Fix client-side issues: logo loading and JS errors

- Replace base64 logo with static file reference to avoid ERR_INVALID_URL
- Add missing status element to index.html to fix TypeError in XMLHttpRequest
- Reduce MAX_CONTENT_LENGTH from 1000TB to 100GB for practicality
- Update all templates to use logo_url instead of logo_b64
- Update Waitress max_request_body_size to match Flask limit

templates/index.html

@@ -150,7 +150,7 @@
 </head>
 <body>
     <div class="header">
-        <img src="data:image/png;base64,{{ logo_b64 }}" alt="Logo" class="logo">
+        <img src="{{ logo_url }}" alt="Logo" class="logo">
         <h1>End of Year Statements Processor</h1>
         <p>Upload PDF files or folders to automatically sort by address and merge by page count</p>
         
@@ -192,6 +192,7 @@
             <button type="submit" id="submitBtn">Process Files</button>
             <button type="button" id="clearBtn" class="clear-btn">Clear/Reset</button>
         </form>
+        <div id="status" style="margin-top: 10px; color: blue;"></div>
         <div class="clear-progress" id="clearProgressContainer">
             <p>Clearing temporary files...</p>
             <progress id="clearProgress" value="0" max="100"></progress>