feat(add stop event):

agentic_security/static/index.html

@@ -335,6 +335,7 @@
           </button>
           <button
             @click="startScan"
+            v-if="!scanRunning"
             class="bg-dark-accent-green text-dark-bg rounded-lg px-6 py-3 font-medium hover:bg-opacity-80 transition-colors flex items-center">
             <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24"
               viewBox="0 0 24 24" fill="none" stroke="currentColor"
@@ -342,6 +343,18 @@
               class="mr-2"><polygon points="5 3 19 12 5 21 5 3"></polygon></svg>
             Run Scan
           </button>
+          <button
+            @click="stopScan"
+            v-if="scanRunning"
+            class="bg-dark-accent-red text-dark-bg rounded-lg px-6 py-3 font-medium hover:bg-opacity-80 transition-colors flex items-center">
+            <!-- Stop Icon -->
+            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24"
+              viewBox="0 0 24 24" fill="none" stroke="currentColor"
+              stroke-width="2" stroke-linecap="round" stroke-linejoin="round"
+              class="mr-2"><rect x="6" y="6" width="12"
+                height="12"></rect></svg>
+            Stop Scan
+          </button>
         </section>
 
         <!-- Progress Bar -->