fix: tighten sharing and shadcn composition

src/modules/_core/share.ts

@@ -6,6 +6,7 @@ import { db } from "@/lib/db";
 import { getCurrentSession } from "@/lib/session";
 import { getEntityType } from "./registry";
 import { shareLinks } from "./schema";
+import { ensureEntityShareAuthorized } from "./share-authorization";
 
 export type ShareLinkCapabilities = { read: boolean; write: boolean };
 
@@ -36,6 +37,10 @@ export async function createShareLink(
   }
 
   const { user, household } = await getCurrentSession();
+  await ensureEntityShareAuthorized(registration, entityId, {
+    householdId: household.id,
+    userId: user.id,
+  });
 
   const rawToken = randomBytes(32).toString("base64url");
   const tokenHash = hashToken(rawToken);