Group B fixes

src/app/api/register/route.ts

@@ -2,6 +2,7 @@ import { NextRequest, NextResponse } from "next/server";
 import { registerCustomer } from "@/lib/zitadel";
 import { rateLimit } from "@/lib/rate-limit";
 import { checkDuplicateDomain } from "@/lib/db";
+import { generatePersonalOrgName } from "@/lib/personal-org";
 import type { RegistrationInput } from "@/types";
 import { z } from "zod";
 
@@ -13,11 +14,10 @@ import { z } from "zod";
  * - `companyName` is no longer always required. It's required when
  *   `isPersonal` is false/absent, ignored when `isPersonal` is true.
  * - `isPersonal` flag distinguishes personal accounts. The server
- *   derives the ZITADEL org name from `${givenName} ${familyName}
- *   (Personal)` for personals — the suffix is the canonical marker
- *   that downstream code (onboarding POST, admin views) uses to
- *   distinguish personal orgs from companies. Customers cannot rename
- *   their own org, so the suffix is stable.
+ *   derives the ZITADEL org name from a generated opaque ID
+ *   (`personal-{8hex}`) — see `lib/personal-org.ts` for the format
+ *   spec. Customers cannot rename their own org, so the marker is
+ *   stable.
  * - Personal accounts skip the duplicate-domain check entirely. Their
  *   row is also excluded from future domain checks (see
  *   `lib/domain-check.ts::findDuplicateInDb`).
@@ -44,15 +44,6 @@ const registrationSchema = z
 const RATE_LIMIT = 3;
 const RATE_WINDOW_MS = 3_600_000; // 1 hour
 
-/**
- * Suffix appended to personal-account ZITADEL org names. Used here to
- * build the org name and elsewhere (session.orgName check) to detect
- * whether the current user is on a personal org.
- *
- * Keep this in sync with `isPersonalOrgName()` in `lib/personal-org.ts`.
- */
-const PERSONAL_ORG_SUFFIX = " (Personal)";
-
 export async function POST(request: NextRequest) {
   // --- Rate limiting ---
   const ip =
@@ -116,14 +107,13 @@ export async function POST(request: NextRequest) {
     //
     // For company: use the customer-supplied companyName (already
     //   validated to be present + ≥2 chars by the schema refinement).
-    // For personal: synthesise from full name + " (Personal)" suffix.
-    //   The suffix is the canonical marker for personal orgs.
-    //
-    // ZITADEL does NOT enforce org-name uniqueness, so two "Hans Müller
-    // (Personal)" orgs can coexist; the org id is what matters for our
-    // labelling and lookups, the name is human-readable only.
+    // For personal: a fresh opaque ID like "personal-3f2a8b1c". The
+    //   user's actual display name is per-user (`session.user.name`),
+    //   so the GUI shows that instead — see `displayOrgNameFor()`.
+    //   This keeps personal orgs collision-free (Bug 9: two people
+    //   named "Eva Müller" both being able to register).
     const orgName = isPersonal
-      ? `${input.givenName.trim()} ${input.familyName.trim()}${PERSONAL_ORG_SUFFIX}`
+      ? generatePersonalOrgName()
       : input.companyName!.trim();
 
     const result = await registerCustomer({