feat(deployments): deployment restart özelliği ekle

Deployment projeleri için yeniden başlatma (restart) yeteneği eklendi.
Backend servisi, API endpoint'i ve kullanıcı arayüzü butonları güncellendi.

frontend/src/pages/DeploymentsPage.tsx

@@ -6,6 +6,7 @@ import {
   faCloudArrowUp,
   faEye,
   faEyeSlash,
+  faPenToSquare,
   faPlus,
   faRotate,
   faRocket
@@ -25,6 +26,7 @@ import {
   fetchDeploymentBranches,
   fetchDeploymentEnvExamples,
   fetchDeployments,
+  restartDeployment,
   runDeployment,
   updateDeployment
 } from "../api/deployments";
@@ -293,6 +295,15 @@ export function DeploymentsPage() {
     }
   };
 
+  const handleRestart = async (id: string) => {
+    try {
+      await restartDeployment(id, "restart");
+      toast.success("Restart tetiklendi");
+    } catch {
+      toast.error("Restart tetiklenemedi");
+    }
+  };
+
   const handleDelete = async (deployment: DeploymentProject) => {
     const ok = window.confirm("Bu deployment'ı silmek istediğinize emin misiniz?");
     if (!ok) return;
@@ -393,6 +404,18 @@ export function DeploymentsPage() {
                     >
                       <FontAwesomeIcon icon={faCloudArrowUp} className="h-4 w-4" />
                     </Button>
+                    <Button
+                      variant="outline"
+                      size="icon"
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        handleRestart(deployment._id);
+                      }}
+                      title="Restart"
+                      aria-label="Restart"
+                    >
+                      <FontAwesomeIcon icon={faRotate} className="h-4 w-4" />
+                    </Button>
                     <Button
                       variant="outline"
                       size="icon"
@@ -402,7 +425,7 @@ export function DeploymentsPage() {
                       }}
                       title="Düzenle"
                     >
-                      <FontAwesomeIcon icon={faRotate} className="h-4 w-4" />
+                      <FontAwesomeIcon icon={faPenToSquare} className="h-4 w-4" />
                     </Button>
                     <Button
                       variant="outline"