GRO-1636: fix scrypt keylen=64 and add email+password UAT test cases

1. Fix scrypt keylen: positional arg is output key length, not N cost.
   Correct call: scrypt(pass, salt, 64, {N:16384, r:8, p:1})
   This produces a 64-byte key matching Better Auth's expected format.

2. Update UAT_PLAYBOOK.md §4.1 with 6 new email+password login test
   cases covering all 4 UAT personas (super, groomer, customer, tester),
   renumbered session/logout/RBAC tests, and a reset-cycle survival test.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

UAT_PLAYBOOK.md

@@ -35,12 +35,17 @@ GroomBook is an open-source, self-hostable pet grooming business management & CR
 
 | # | Scenario | Steps | Expected |
 |---|----------|-------|----------|
-| TC-APP-4.1.1 | OIDC login | 1. Navigate to UAT environment<br>2. Click "Login with Authentik"<br>3. Enter test credentials<br>4. Authorize the application | User is redirected to app dashboard, session is established |
-| TC-APP-4.1.2 | Session persistence | 1. Log in as any user<br>2. Close browser tab<br>3. Reopen browser and navigate to UAT | User remains logged in, no re-authentication required |
-| TC-APP-4.1.3 | Logout | 1. Log in as any user<br>2. Click logout button<br>3. Attempt to access protected route | User is logged out and redirected to login page |
-| TC-APP-4.1.4 | RBAC - Manager access | 1. Log in as Manager<br>2. Navigate to Settings, Staff Management, Reports | All administrative features are accessible |
-| TC-APP-4.1.5 | RBAC - Staff access | 1. Log in as Staff<br>2. Attempt to access Settings, Staff Management | Access denied or limited view, staff can only see assigned appointments |
-| TC-APP-4.1.6 | RBAC - Client access | 1. Log in as Client<br>2. Navigate to portal<br>3. Attempt to access admin areas | Client can only view their own appointments, pets, and profile |
+| TC-APP-4.1.1 | OIDC login (Authentik) | 1. Navigate to UAT environment<br>2. Click "Login with Authentik"<br>3. Enter test credentials<br>4. Authorize the application | User is redirected to app dashboard, session is established |
+| TC-APP-4.1.2 | Email + password login (UAT Super) | 1. Navigate to UAT environment sign-in page<br>2. Select email+password flow<br>3. Enter `uat-super@groombook.dev` and UAT super password<br>4. Submit | User is logged in and redirected to dashboard with manager access |
+| TC-APP-4.1.3 | Email + password login (UAT Groomer) | 1. Navigate to UAT environment sign-in page<br>2. Select email+password flow<br>3. Enter `uat-groomer@groombook.dev` and UAT groomer password<br>4. Submit | User is logged in and redirected to dashboard with staff/groomer access |
+| TC-APP-4.1.4 | Email + password login (UAT Customer) | 1. Navigate to UAT environment sign-in page<br>2. Select email+password flow<br>3. Enter `uat-customer@groombook.dev` and UAT customer password<br>4. Submit | User is logged in with client portal access |
+| TC-APP-4.1.5 | Email + password login (UAT Tester) | 1. Navigate to UAT environment sign-in page<br>2. Select email+password flow<br>3. Enter `uat-tester@groombook.dev` and UAT tester password<br>4. Submit | User is logged in with staff/tester access |
+| TC-APP-4.1.6 | Session persistence | 1. Log in as any user<br>2. Close browser tab<br>3. Reopen browser and navigate to UAT | User remains logged in, no re-authentication required |
+| TC-APP-4.1.7 | Logout | 1. Log in as any user<br>2. Click logout button<br>3. Attempt to access protected route | User is logged out and redirected to login page |
+| TC-APP-4.1.8 | RBAC - Manager access | 1. Log in as Manager (OIDC or email+password)<br>2. Navigate to Settings, Staff Management, Reports | All administrative features are accessible |
+| TC-APP-4.1.9 | RBAC - Staff access | 1. Log in as Staff (OIDC or email+password)<br>2. Attempt to access Settings, Staff Management | Access denied or limited view, staff can only see assigned appointments |
+| TC-APP-4.1.10 | RBAC - Client access | 1. Log in as Client (email+password)<br>2. Navigate to portal<br>3. Attempt to access admin areas | Client can only view their own appointments, pets, and profile |
+| TC-APP-4.1.11 | Login after hourly reset | 1. Wait for or trigger `reset-demo-data` CronJob to run<br>2. Attempt email+password login as any UAT persona | Login succeeds — Better Auth credential accounts survive the reset cycle |
 
 ### 4.2 Setup Wizard / OOBE
 
@@ -79,7 +84,7 @@ GroomBook is an open-source, self-hostable pet grooming business management & CR
 | TC-APP-4.5.5 | Appointment groups | 1. Create multiple appointments for same time slot<br>2. View in calendar | Appointments are grouped/linked appropriately |
 | TC-APP-4.5.6 | Appointment availability check | 1. Attempt to book appointment during unavailable slot | System shows conflict or prevents double-booking |
 | TC-APP-4.5.7 | Booking wizard — size/coat selection | 1. Start new appointment booking wizard<br>2. Select a pet with sizeCategory and coatType set<br>3. Observe the service/slot selection step | Size and coat type dropdowns are displayed and persist the pet's existing values |
-| TC-APP-4.5.8 | Large/Xlarge pet slot duration reflects buffer | 1. Add a pet with sizeCategory = "large" or "xlarge" to an appointment<br>2. Note the service duration<br>3. Complete booking and inspect the appointment | Appointment slot includes the service duration plus the configured buffer for the pet's size category |
+| TC-APP-4.5.8 | Large/X-Large pet slot duration reflects buffer | 1. Add a pet with sizeCategory = "large" or "x-large" to an appointment<br>2. Note the service duration<br>3. Complete booking and inspect the appointment | Appointment slot includes the service duration plus the configured buffer for the pet's size category |
 | TC-APP-4.5.9 | Appointment overrun cascades downstream | 1. Book three consecutive same-groomer appointments (A → B → C)<br>2. Manually extend appointment A's endTime so it overlaps B's startTime by ≥15 min<br>3. Observe appointment B | Appointment B (and C if still overlapping) is automatically shifted forward by the overrun delta + buffer; no error thrown |
 | TC-APP-4.5.10 | Cascaded appointments appear at new times | 1. Complete TC-APP-4.5.9<br>2. Check the calendar/list view | Appointments B and C are now shown at their shifted start/end times |
 | TC-APP-4.5.11 | Client receives reschedule notification email | 1. Complete TC-APP-4.5.9<br>2. Check the client's email (or notification log) | Client receives an email with subject/lines indicating their appointment was rescheduled from original time to new time |

docker-compose.yml

@@ -50,6 +50,8 @@ services:
       dockerfile: apps/web/Dockerfile
     ports:
       - "8080:80"
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     depends_on:
       - api
 

packages/db/src/seed.ts

@@ -20,6 +20,7 @@ import postgres from "postgres";
 import { drizzle } from "drizzle-orm/postgres-js";
 import { eq, sql } from "drizzle-orm";
 import * as schema from "./schema.js";
+import { randomBytes, scrypt } from "node:crypto";
 
 // ── Seed profile configuration ─────────────────────────────────────────────
 
@@ -509,6 +510,81 @@ async function seedKnownUsers() {
   }
   console.log(`✓ Seeded ${demoSvcs.length} services`);
 
+  // ── Better Auth credential accounts for UAT personas ─────────────────────
+  // Creates user + account rows so UAT personas can email+password login.
+  // Uses the same scrypt config as better-auth (keylen=64, N=16384, r=8, p=1).
+  const uatCredAccounts: Array<{ email: string; passwordEnvKey: string; staffId: string }> = [
+    { email: "uat-super@groombook.dev", passwordEnvKey: "SEED_UAT_SUPER_PASSWORD", staffId: "00000000-0000-0000-0000-000000000003" },
+    { email: "uat-groomer@groombook.dev", passwordEnvKey: "SEED_UAT_GROOMER_PASSWORD", staffId: "00000000-0000-0000-0000-000000000004" },
+    { email: "uat-customer@groombook.dev", passwordEnvKey: "SEED_UAT_CUSTOMER_PASSWORD", staffId: "" },
+    { email: "uat-tester@groombook.dev", passwordEnvKey: "SEED_UAT_TESTER_PASSWORD", staffId: "" },
+  ];
+
+  for (const acct of uatCredAccounts) {
+    const password = process.env[acct.passwordEnvKey];
+    if (!password) {
+      console.log(`⊘ No ${acct.passwordEnvKey} set — skipping Better Auth account for ${acct.email}`);
+      continue;
+    }
+
+    // Check if user already exists
+    const [existingUser] = await db
+      .select()
+      .from(schema.user)
+      .where(eq(schema.user.email, acct.email))
+      .limit(1);
+
+    let userId: string;
+    if (existingUser) {
+      userId = existingUser.id;
+      console.log(`✓ Better Auth user '${acct.email}' already exists — skipping`);
+    } else {
+      // Hash with same scrypt params as better-auth: keylen=64, N=16384, r=8, p=1
+      // Use Promise-based scrypt API (callback pattern, wrapped in Promise)
+      const salt = randomBytes(16);
+      const key = await new Promise<Buffer>((resolve, reject) => {
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        scrypt(password.normalize("NFKC"), salt, 64, { N: 16384, r: 8, p: 1 } as any, (err: Error | null, derivedKey: Buffer) => {
+          if (err) reject(err);
+          else resolve(derivedKey);
+        });
+      });
+      const passwordHash = `${salt.toString("hex")}:${key.toString("hex")}`;
+
+      const [newUser] = await db.insert(schema.user).values({
+        id: uuid(),
+        name: acct.email.split("@")[0]!,
+        email: acct.email,
+        emailVerified: true,
+      }).returning();
+      userId = newUser!.id;
+
+      await db.insert(schema.account).values({
+        id: uuid(),
+        accountId: userId,
+        providerId: "credential",
+        userId,
+        password: passwordHash,
+      });
+      console.log(`✓ Created Better Auth credential account for '${acct.email}'`);
+    }
+
+    // Link staff record to Better Auth user if staff exists and has no userId yet
+    if (acct.staffId) {
+      const [existingStaff] = await db
+        .select()
+        .from(schema.staff)
+        .where(eq(schema.staff.id, acct.staffId))
+        .limit(1);
+      if (existingStaff && !existingStaff.userId) {
+        await db.update(schema.staff)
+          .set({ userId })
+          .where(eq(schema.staff.id, acct.staffId));
+        console.log(`  ↳ Linked staff '${acct.email}' to Better Auth user`);
+      }
+    }
+  }
+
   // ── Client: Demo Client ──
   const [existingClient] = await db
     .select()