frontend: kanal ekleme formu

Dashboard'a name/youtubeHandle/channelId alanlarıyla bir server action
formu eklendi. Polling ve /status için channel_id gerçek bir YouTube
UC... kimliği olmalı.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/frontend/app/actions.ts

@@ -0,0 +1,20 @@
+"use server";
+
+import { prisma } from "@streamclipper/db";
+import { revalidatePath } from "next/cache";
+
+export async function addChannel(formData: FormData) {
+  const name = String(formData.get("name") ?? "").trim();
+  const youtubeHandle = String(formData.get("youtubeHandle") ?? "").trim();
+  const channelId = String(formData.get("channelId") ?? "").trim();
+
+  if (!name || !youtubeHandle || !channelId) {
+    throw new Error("Kanal adı, handle ve channel_id alanları zorunlu.");
+  }
+
+  await prisma.channel.create({
+    data: { name, youtubeHandle, channelId, isActive: true },
+  });
+
+  revalidatePath("/");
+}

apps/frontend/app/globals.css

@@ -91,6 +91,43 @@ th {
   margin-bottom: 1rem;
 }
 
+.add-channel-form {
+  display: flex;
+  gap: 0.5rem;
+  flex-wrap: wrap;
+}
+
+.add-channel-form input {
+  flex: 1;
+  min-width: 160px;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  padding: 0.5rem 0.7rem;
+  color: var(--text);
+  font-size: 0.9rem;
+}
+
+.add-channel-form input:focus {
+  outline: none;
+  border-color: var(--accent);
+}
+
+.add-channel-form button {
+  background: var(--accent);
+  border: none;
+  border-radius: 6px;
+  padding: 0.5rem 1rem;
+  color: #fff;
+  font-weight: 600;
+  font-size: 0.9rem;
+  cursor: pointer;
+}
+
+.add-channel-form button:hover {
+  opacity: 0.9;
+}
+
 .card-head {
   display: flex;
   justify-content: space-between;

apps/frontend/app/page.tsx

@@ -1,4 +1,5 @@
 import { prisma } from "@streamclipper/db";
+import { addChannel } from "./actions";
 
 export const dynamic = "force-dynamic";
 
@@ -17,10 +18,16 @@ export default async function DashboardPage() {
   return (
     <>
       <h1>Kanal Durumu</h1>
+
+      <form action={addChannel} className="card add-channel-form">
+        <input name="name" placeholder="Kanal adı" required />
+        <input name="youtubeHandle" placeholder="@handle" required />
+        <input name="channelId" placeholder="channel_id (UC...)" required />
+        <button type="submit">Kanal Ekle</button>
+      </form>
+
       {channels.length === 0 ? (
-        <p className="empty">
+        <p className="empty">Henüz kanal eklenmedi.</p>
-          Henüz kanal eklenmedi. `channels` tablosuna bir kayıt ekleyin (Prisma Studio veya seed script).
-        </p>
       ) : (
         <table>
           <thead>