feat: post variants, transforms, image generation, AI ideas, channel edit page with image style settings

app/api/generate/post-image/route.js

@@ -0,0 +1,15 @@
+import { NextResponse } from 'next/server';
+import { requireUser } from '@/lib/session';
+import { engine } from '@/lib/engine';
+
+export async function POST(req) {
+  const user = await requireUser();
+  if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  const body = await req.json();
+  try {
+    const result = await engine.generatePostImage(user.id, body);
+    return NextResponse.json(result);
+  } catch (e) {
+    return NextResponse.json({ error: e.message }, { status: 500 });
+  }
+}

app/api/generate/topics-ideas/route.js

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+import { NextResponse } from 'next/server';
+import { requireUser } from '@/lib/session';
+import { engine } from '@/lib/engine';
+
+export async function POST(req) {
+  const user = await requireUser();
+  if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  const body = await req.json();
+  try {
+    const result = await engine.topicsIdeas(user.id, body);
+    return NextResponse.json(result);
+  } catch (e) {
+    return NextResponse.json({ error: e.message }, { status: 500 });
+  }
+}

app/api/generate/transform/route.js

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+import { NextResponse } from 'next/server';
+import { requireUser } from '@/lib/session';
+import { engine } from '@/lib/engine';
+
+export async function POST(req) {
+  const user = await requireUser();
+  if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  const body = await req.json();
+  try {
+    const result = await engine.transformPost(user.id, body);
+    return NextResponse.json(result);
+  } catch (e) {
+    return NextResponse.json({ error: e.message }, { status: 500 });
+  }
+}

app/channels/[id]/edit/page.js

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+import { notFound, redirect } from 'next/navigation';
+import { requireUser } from '@/lib/session';
+import { engine } from '@/lib/engine';
+import Header from '@/components/Header';
+import ChannelEdit from '@/components/ChannelEdit';
+
+export default async function ChannelEditPage({ params }) {
+  const user = await requireUser();
+  if (!user) redirect('/login');
+  const { id } = await params;
+  let channel;
+  try { channel = await engine.getChannel(user.id, id); } catch { notFound(); }
+  if (!channel) notFound();
+  return (
+    <>
+      <Header user={user} />
+      <ChannelEdit channel={channel} />
+    </>
+  );
+}