feat(ocr): make OCR functionality optional via configuration

The OCR feature can now be enabled or disabled using a new `OCR_ENABLED` configuration flag.

This allows for more flexible deployments where the OCR feature is not required, reducing the application's resource footprint and dependency overhead.

The backend now conditionally initializes the OCR engine and its associated route. The frontend UI for OCR uploads is also rendered conditionally based on this setting.

app.py

@@ -26,6 +26,7 @@ else:
     app.config.from_object(DevelopmentConfig)
 cache = Cache(app, config={"CACHE_TYPE": "SimpleCache"})
 
+if app.config.get("OCR_ENABLED"):
     ocr = PaddleOCR(use_angle_cls=True, lang='en')  # Adjust language if needed
 
 app.config["SESSION_COOKIE_SECURE"] = not app.config["DEBUG"]
@@ -85,6 +86,7 @@ def home():
             accounts=count,
             current_month_accounts=current_month_accounts,
             expired_accounts=expired_accounts,
+            ocr_enabled=app.config.get("OCR_ENABLED"),
         )
     return render_template("index.html")
 
@@ -163,7 +165,7 @@ def add_account():
             return redirect(url_for("user_accounts"))
         return render_template("add_account.html")
 
-    return render_template("add_account.html")
+    return render_template("add_account.html", ocr_enabled=app.config.get("OCR_ENABLED"))
 
 
 @app.route("/accounts/delete", methods=["POST"])
@@ -187,6 +189,7 @@ def stream_names():
     return jsonify(stream_names)
 
 
+if app.config.get("OCR_ENABLED"):
     @app.route('/OCRupload', methods=['POST'])
     def OCRupload():
         if 'image' not in request.files:

templates/add_account.html

@@ -74,6 +74,7 @@
                 <span id="buttonText">Add Account</span>
             </button>
         </form>
+        {% if ocr_enabled %}
         <hr>
         <h2>Load Details Via OCR</h2>
             <form action="/OCRupload" method="POST" enctype="multipart/form-data" onsubmit="showLoadingOCR()">
@@ -86,6 +87,7 @@
                     <span id="ocrButtonText">Load Details</span>
                 </button>
             </form>
+        {% endif %}
     
     </main>
     <footer class="bg-dark text-white text-center py-3 mt-5">