Ship free-tier watermark policy (2 clean renders) and align pricing/legal copy.

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

lib/billing.ts

@@ -211,6 +211,7 @@ export async function adminResetUserCredits(
     where: { id: userId },
     data: {
       plan,
+      subscriptionStatus: plan === "PREMIUM" ? "pro" : "free",
       monthlyCredits,
       videosUsed: used,
       extraCredits: cappedExtras,
@@ -245,6 +246,7 @@ export async function activateProPlan(
     where: { id: userId },
     data: {
       plan: "PREMIUM",
+      subscriptionStatus: "pro",
       subscribedAt: new Date(),
       ...(opts.stripeCustomerId !== undefined
         ? { stripeCustomerId: opts.stripeCustomerId }
@@ -267,6 +269,7 @@ export async function downgradeToFreePlan(userId: string) {
     where: { id: userId },
     data: {
       plan: "FREE",
+      subscriptionStatus: "free",
       stripeSubscriptionId: null,
       subscribedAt: null,
       cardLast4: null,