Align preview typography with FFmpeg output, add video/song title split, and ship OSS updates.

Separate YouTube video titles from on-video song/artist fields with Pro gating, serve curated fonts and watermark assets for 1:1 preview parity, and include billing/API/docs/deploy stack for self-hosted release.

Co-authored-by: Cursor <cursoragent@cursor.com>

hooks/useMockupProgress.ts

@@ -0,0 +1,30 @@
+"use client";
+
+import { useEffect, useState } from "react";
+
+export function useMockupProgress(
+  active: boolean,
+  phaseOneMs = 3000,
+  phaseTwoMs = 2000,
+) {
+  const [phase, setPhase] = useState<0 | 1 | 2>(0);
+  const [processed, setProcessed] = useState(false);
+
+  useEffect(() => {
+    if (!active) return;
+
+    const startFrame = requestAnimationFrame(() => setPhase(1));
+    const midTimer = setTimeout(() => setPhase(2), phaseOneMs);
+    const doneTimer = setTimeout(() => setProcessed(true), phaseOneMs + phaseTwoMs);
+
+    return () => {
+      cancelAnimationFrame(startFrame);
+      clearTimeout(midTimer);
+      clearTimeout(doneTimer);
+    };
+  }, [active, phaseOneMs, phaseTwoMs]);
+
+  const transitionMs = phase === 1 ? phaseOneMs : phase === 2 ? phaseTwoMs : 0;
+
+  return { phase, processed, transitionMs };
+}