feat: Changes to self hosted purchase

adminsite/lib/api.ts

@@ -317,8 +317,10 @@ export const api = {
     entitlement: (id: string) =>
         req<{ entitlement: Entitlement; pending: boolean }>(`/api/instances/${id}/entitlement`),
     checkoutOptions: () => req<CheckoutOptions>("/api/checkout/options"),
-    createSelfHosted: (name: string) =>
-        post<{ instance_id: string }>("/api/instances/self-hosted", { name }),
+    // Paid self-hosted: links (or reuses) the install's real UUID, which the
+    // checkout then names. There is no placeholder to claim afterwards.
+    createSelfHostedCheckout: (instance_id: string, name: string) =>
+        post<{ instance_id: string }>("/api/instances/self-hosted", { instance_id, name }),
     // Paid cloud: provisions the real instance the paid webhook then licenses.
     createCloudCheckout: (name: string) =>
         post<{ instance_id: string }>("/api/instances/cloud", { name }),
@@ -326,9 +328,6 @@ export const api = {
         id: string,
         body: { tier: Tier; term: Term; servers: number; features: string[] },
     ) => put<{ entitlement: Entitlement; pending: boolean }>(`/api/instances/${id}/entitlement`, body),
-    claimLink: (placeholderId: string, instance_id: string) =>
-        post<{ instance_id: string; warning?: string }>(
-            `/api/instances/${placeholderId}/claim-link`, { instance_id }),
     billingPortal: () => post<{ url: string }>("/api/billing/portal"),
 
     accountUsers: () => req<AccountUser[]>("/api/account/users"),