Merge pull request 'feature/staff-management' (#7) from feature/staff-management into master

Reviewed-on: http://178.131.50.201:3000/admin/dyolink/pulls/7
2026-04-30 14:09:31 +03:30
parent d19da80d8e 1387e4cb5e
commit 9fa406e35e
52 changed files with 2136 additions and 325 deletions
--- a/backend/prisma/migrations/20260430091832_staff_invites_activation/migration.sql
+++ b/backend/prisma/migrations/20260430091832_staff_invites_activation/migration.sql
@@ -0,0 +1,29 @@
+-- AlterTable
+ALTER TABLE "memberships" ADD COLUMN     "isActive" BOOLEAN NOT NULL DEFAULT true;
+
+-- CreateTable
+CREATE TABLE "staff_invitations" (
+    "id" TEXT NOT NULL,
+    "membershipId" TEXT NOT NULL,
+    "invitedById" TEXT NOT NULL,
+    "tokenHash" TEXT NOT NULL,
+    "expiresAt" TIMESTAMP(3) NOT NULL,
+    "acceptedAt" TIMESTAMP(3),
+    "revokedAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "staff_invitations_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "staff_invitations_tokenHash_key" ON "staff_invitations"("tokenHash");
+
+-- CreateIndex
+CREATE INDEX "staff_invitations_membershipId_createdAt_idx" ON "staff_invitations"("membershipId", "createdAt");
+
+-- AddForeignKey
+ALTER TABLE "staff_invitations" ADD CONSTRAINT "staff_invitations_membershipId_fkey" FOREIGN KEY ("membershipId") REFERENCES "memberships"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "staff_invitations" ADD CONSTRAINT "staff_invitations_invitedById_fkey" FOREIGN KEY ("invitedById") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
--- a/backend/prisma/schema.prisma
+++ b/backend/prisma/schema.prisma
@@ -20,6 +20,7 @@ model User {
  memberships        Membership[]
  ownedOrganizations Organization[] @relation("OrganizationOwner")
  sessions           Session[] // 👈 ADD THIS - opposite relation for Session
+  sentStaffInvites   StaffInvitation[]

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
@@ -122,11 +123,13 @@ model Membership {
  organizationId String

  isOwner Boolean @default(false)
+  isActive Boolean @default(true)

  user         User         @relation(fields: [userId], references: [id])
  organization Organization @relation(fields: [organizationId], references: [id])

  permissions MembershipPermission[]
+  invitations StaffInvitation[]

  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
@@ -135,6 +138,26 @@ model Membership {
  @@map("memberships")
 }

+model StaffInvitation {
+  id String @id @default(uuid())
+
+  membershipId String
+  invitedById  String
+  tokenHash    String   @unique
+  expiresAt    DateTime
+  acceptedAt   DateTime?
+  revokedAt    DateTime?
+
+  membership Membership @relation(fields: [membershipId], references: [id], onDelete: Cascade)
+  invitedBy  User       @relation(fields: [invitedById], references: [id], onDelete: Cascade)
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  @@index([membershipId, createdAt])
+  @@map("staff_invitations")
+}
+
 model Permission {
  id          String  @id @default(uuid())
  name        String  @unique
--- a/backend/prisma/seed.ts
+++ b/backend/prisma/seed.ts
@@ -45,10 +45,10 @@ async function main() {
  // Create plans
  const plans = [
    { name: 'trial', maxUsers: 5, price: 0, features: {} },
-    { name: 'Small', maxUsers: 5, price: 79, features: {} },
-    { name: 'Medium', maxUsers: 10, price: 129, features: {} },
-    { name: 'Large', maxUsers: 15, price: 179, features: {} },
-    { name: 'Enterprise', maxUsers: 999999, price: 299, features: {} },
+    { name: 'Small', maxUsers: 5, price: 150, features: {} },
+    { name: 'Medium', maxUsers: 10, price: 250, features: {} },
+    { name: 'Large', maxUsers: 15, price: 400, features: {} },
+    { name: 'Enterprise', maxUsers: 999999, price: 1000, features: {} },
  ];

  for (const plan of plans) {
--- a/backend/src/app.module.ts
+++ b/backend/src/app.module.ts
@@ -7,6 +7,7 @@ import { AppService } from './app.service';
 import { AdminModule } from './admin/admin.module';
 import { PrismaModule } from '../prisma/prisma.module'; // ✅
 import { PatientsModule } from './modules/patients/patients.module';
+import { StaffModule } from './modules/staff/staff.module';

@Module({
  imports: [
@@ -17,6 +18,7 @@ import { PatientsModule } from './modules/patients/patients.module';
    PrismaModule, // ✅ ADD THIS
    AuthModule,
    PatientsModule,
+    StaffModule,
    AdminModule.forRoot(),
  ],
  controllers: [AppController],
--- a/backend/src/common/permissions.spec.ts
+++ b/backend/src/common/permissions.spec.ts
@@ -0,0 +1,37 @@
+import { isUnlimitedSeats, normalizeTabPermissions, SEAT_UNLIMITED_THRESHOLD } from './permissions';
+
+describe('normalizeTabPermissions', () => {
+  it('adds READ when EDIT is present', () => {
+    expect(normalizeTabPermissions(['TAB_PATIENTS_EDIT'])).toEqual([
+      'TAB_PATIENTS_READ',
+      'TAB_PATIENTS_EDIT',
+    ]);
+  });
+
+  it('dedupes and sorts', () => {
+    expect(
+      normalizeTabPermissions([
+        'TAB_TODAY_READ',
+        'TAB_TODAY_EDIT',
+        'TAB_TODAY_READ',
+        'bogus',
+      ]),
+    ).toEqual(['TAB_TODAY_READ', 'TAB_TODAY_EDIT']);
+  });
+
+  it('accepts empty array', () => {
+    expect(normalizeTabPermissions([])).toEqual([]);
+  });
+});
+
+describe('isUnlimitedSeats', () => {
+  it('treats sentinel as unlimited', () => {
+    expect(isUnlimitedSeats(SEAT_UNLIMITED_THRESHOLD)).toBe(true);
+    expect(isUnlimitedSeats(SEAT_UNLIMITED_THRESHOLD + 1)).toBe(true);
+  });
+
+  it('treats normal caps as limited', () => {
+    expect(isUnlimitedSeats(5)).toBe(false);
+    expect(isUnlimitedSeats(15)).toBe(false);
+  });
+});
--- a/backend/src/common/permissions.ts
+++ b/backend/src/common/permissions.ts
@@ -0,0 +1,57 @@
+/** Tab permissions — keep in sync with prisma seed and AuthService ALL_PERMISSIONS */
+export const ALL_TAB_PERMISSIONS = [
+  'TAB_TODAY_READ',
+  'TAB_TODAY_EDIT',
+  'TAB_PATIENTS_READ',
+  'TAB_PATIENTS_EDIT',
+  'TAB_APPOINTMENTS_READ',
+  'TAB_APPOINTMENTS_EDIT',
+  'TAB_STAFF_READ',
+  'TAB_STAFF_EDIT',
+  'TAB_LAB_READ',
+  'TAB_LAB_EDIT',
+  'TAB_BILLING_READ',
+  'TAB_BILLING_EDIT',
+  'TAB_REPORTS_READ',
+  'TAB_REPORTS_EDIT',
+] as const;
+
+export type TabPermission = (typeof ALL_TAB_PERMISSIONS)[number];
+
+const ALL_TAB_SET = new Set<string>(ALL_TAB_PERMISSIONS);
+const TAB_ORDER_INDEX = new Map<string, number>(
+  ALL_TAB_PERMISSIONS.map((p, i) => [p, i]),
+);
+
+/** Enterprise / unlimited seat plans use this sentinel in seed data */
+export const SEAT_UNLIMITED_THRESHOLD = 999999;
+
+export function isUnlimitedSeats(maxUsers: number): boolean {
+  return maxUsers >= SEAT_UNLIMITED_THRESHOLD;
+}
+
+/** EDIT implies READ for the same feature tab */
+const EDIT_TO_READ: Record<string, string> = {
+  TAB_TODAY_EDIT: 'TAB_TODAY_READ',
+  TAB_PATIENTS_EDIT: 'TAB_PATIENTS_READ',
+  TAB_APPOINTMENTS_EDIT: 'TAB_APPOINTMENTS_READ',
+  TAB_STAFF_EDIT: 'TAB_STAFF_READ',
+  TAB_LAB_EDIT: 'TAB_LAB_READ',
+  TAB_BILLING_EDIT: 'TAB_BILLING_READ',
+  TAB_REPORTS_EDIT: 'TAB_REPORTS_READ',
+};
+
+/**
+ * Dedupe, drop unknown strings, and add implied READ permissions for each EDIT.
+ */
+export function normalizeTabPermissions(names: string[]): string[] {
+  const out = new Set<string>();
+  for (const raw of names) {
+    const n = typeof raw === 'string' ? raw.trim() : '';
+    if (!n || !ALL_TAB_SET.has(n)) continue;
+    out.add(n);
+    const read = EDIT_TO_READ[n];
+    if (read) out.add(read);
+  }
+  return [...out].sort((a, b) => (TAB_ORDER_INDEX.get(a) ?? 0) - (TAB_ORDER_INDEX.get(b) ?? 0));
+}
--- a/backend/src/modules/auth/auth.service.ts
+++ b/backend/src/modules/auth/auth.service.ts
@@ -48,8 +48,9 @@ export class AuthService {
   */
  async validateUser(email: string, password: string): Promise<any> {
    try {
+      const normalizedEmail = email.trim().toLowerCase();
      const user = await this.prisma.user.findUnique({
-        where: { email },
+        where: { email: normalizedEmail },
        include: {
          memberships: {
            include: {
@@ -135,7 +136,7 @@ export class AuthService {
      });

      // Transform memberships to include organization info and permissions
-      const organizations = user.memberships?.map(membership => ({
+      const organizations = this.toActiveOrganizations(user.memberships).map(membership => ({
        id: membership.organization.id,
        name: membership.organization.name,
        type: membership.organization.type.name, // 'CLINIC' or 'LAB'
@@ -147,9 +148,10 @@ export class AuthService {
          ? {
              name: membership.organization.plan.name,
              maxUsers: membership.organization.plan.maxUsers,
+              price: membership.organization.plan.price,
            }
          : undefined,
-      })) || [];
+      }));

      return {
        success: true,
@@ -177,7 +179,8 @@ export class AuthService {
   * @returns Created user info without password
   */
  async register(registerDto: RegisterDto) {
-    const { email, password, name, organizationName, organizationEmail, organizationType } = registerDto;
+    const { password, name, organizationName, organizationEmail, organizationType } = registerDto;
+    const email = registerDto.email.trim().toLowerCase();

    // 1. Check existing user
    const existingUser = await this.prisma.user.findUnique({
@@ -342,7 +345,7 @@ export class AuthService {
      const { passwordHash, ...result } = user;

      // Transform memberships for frontend consumption
-      const organizations = user.memberships?.map(membership => ({
+      const organizations = this.toActiveOrganizations(user.memberships).map(membership => ({
        id: membership.organization.id,
        name: membership.organization.name,
        type: membership.organization.type.name,
@@ -354,9 +357,10 @@ export class AuthService {
          ? {
              name: membership.organization.plan.name,
              maxUsers: membership.organization.plan.maxUsers,
+              price: membership.organization.plan.price,
            }
          : undefined,
-      })) || [];
+      }));

      return {
        success: true,
@@ -462,7 +466,7 @@ export class AuthService {
      });

      // Transform memberships for response
-      const organizations = session.user.memberships?.map(membership => ({
+      const organizations = this.toActiveOrganizations(session.user.memberships).map(membership => ({
        id: membership.organization.id,
        name: membership.organization.name,
        type: membership.organization.type.name,
@@ -474,9 +478,10 @@ export class AuthService {
          ? {
              name: membership.organization.plan.name,
              maxUsers: membership.organization.plan.maxUsers,
+              price: membership.organization.plan.price,
            }
          : undefined,
-      })) || [];
+      }));

      return {
        success: true,
@@ -668,7 +673,7 @@ export class AuthService {

      const { passwordHash, ...user } = session.user;

-      const organizations = session.user.memberships?.map(membership => ({
+      const organizations = this.toActiveOrganizations(session.user.memberships).map(membership => ({
        id: membership.organization.id,
        name: membership.organization.name,
        type: membership.organization.type.name,
@@ -680,9 +685,10 @@ export class AuthService {
          ? {
              name: membership.organization.plan.name,
              maxUsers: membership.organization.plan.maxUsers,
+              price: membership.organization.plan.price,
            }
          : undefined,
-      })) || [];
+      }));

      return {
        success: true,
@@ -722,6 +728,9 @@ export class AuthService {
    if (!membership) {
      throw new UnauthorizedException('Access denied to this organization');
    }
+    if (!membership.isOwner && !membership.isActive) {
+      throw new UnauthorizedException('Your invitation is still pending activation');
+    }

    // 2. Build payload WITH org context
    const payload = {
@@ -751,18 +760,35 @@ export class AuthService {
          name: membership.organization.name,
          type: membership.organization.type.name,
          isOwner: membership.isOwner,
+          permissions,
          plan: membership.organization.plan
            ? {
                name: membership.organization.plan.name,
                maxUsers: membership.organization.plan.maxUsers,
+                price: membership.organization.plan.price,
              }
            : undefined,
        },
-        permissions,
      },
    };
  }

+  private toActiveOrganizations(
+    memberships: Array<{
+      isOwner: boolean;
+      isActive: boolean;
+      organization: {
+        id: string;
+        name: string;
+        type: { name: string };
+        plan?: { name: string; maxUsers: number; price: number } | null;
+      };
+      permissions?: Array<{ permission: { name: string } }>;
+    }> = [],
+  ) {
+    return memberships.filter((m) => m.isOwner || m.isActive);
+  }
+
  /**
   * Owner-only subscription / seat alerts for the current org (from JWT).
   * Used for a subtle warning indicator in the app shell (not staff-facing banners).
@@ -776,6 +802,8 @@ export class AuthService {
          seatsLow: false,
          trialEndingSoon: false,
          trialExpired: false,
+          daysUntilPlanEnd: null,
+          planEndsAt: null,
        },
      };
    }
@@ -797,6 +825,8 @@ export class AuthService {
          seatsLow: false,
          trialEndingSoon: false,
          trialExpired: false,
+          daysUntilPlanEnd: null,
+          planEndsAt: null,
        },
      };
    }
@@ -805,7 +835,10 @@ export class AuthService {
    const plan = org.plan;
    const maxUsers = plan.maxUsers;
    const seatsUsed = await this.prisma.membership.count({
-      where: { organizationId: org.id },
+      where: {
+        organizationId: org.id,
+        OR: [{ isOwner: true }, { isActive: true }],
+      },
    });

    const unlimited = maxUsers >= 999999;
@@ -813,23 +846,16 @@ export class AuthService {
    const seatsLow =
      !unlimited && remaining >= 0 && remaining <= 2 && maxUsers > 0;

-    let trialEndingSoon = false;
-    let trialExpired = false;
-    let daysUntilTrialEnd: number | null = null;
-    let trialEndsAt: string | null = null;
-
-    if (plan.name === 'trial') {
+    // Current pricing model: trial lasts 30 days; paid plans last 90 days.
+    const durationDays = plan.name === 'trial' ? 30 : 90;
    const end = new Date(org.createdAt);
-      end.setDate(end.getDate() + 30);
-      trialEndsAt = end.toISOString();
+    end.setDate(end.getDate() + durationDays);
+    const planEndsAt = end.toISOString();
    const ms = end.getTime() - Date.now();
-      daysUntilTrialEnd = Math.ceil(ms / (1000 * 60 * 60 * 24));
-      if (daysUntilTrialEnd <= 0) {
-        trialExpired = true;
-      } else if (daysUntilTrialEnd <= 7) {
-        trialEndingSoon = true;
-      }
-    }
+    const daysUntilPlanEnd = Math.ceil(ms / (1000 * 60 * 60 * 24));
+
+    const trialExpired = plan.name === 'trial' && daysUntilPlanEnd <= 0;
+    const trialEndingSoon = plan.name === 'trial' && daysUntilPlanEnd > 0 && daysUntilPlanEnd <= 7;

    const showWarning = seatsLow || trialEndingSoon || trialExpired;

@@ -842,8 +868,10 @@ export class AuthService {
        trialExpired,
        seatsUsed,
        seatsLimit: maxUsers,
-        daysUntilTrialEnd,
-        trialEndsAt,
+        daysUntilTrialEnd: plan.name === 'trial' ? daysUntilPlanEnd : null,
+        trialEndsAt: plan.name === 'trial' ? planEndsAt : null,
+        daysUntilPlanEnd,
+        planEndsAt,
      },
    };
  }
--- a/backend/src/modules/staff/dto/accept-staff-invite.dto.ts
+++ b/backend/src/modules/staff/dto/accept-staff-invite.dto.ts
@@ -0,0 +1,14 @@
+import { IsString, MinLength } from 'class-validator';
+
+export class AcceptStaffInviteDto {
+  @IsString()
+  token: string;
+
+  @IsString()
+  @MinLength(8)
+  password: string;
+
+  @IsString()
+  @MinLength(1)
+  name: string;
+}
--- a/backend/src/modules/staff/dto/invite-staff.dto.ts
+++ b/backend/src/modules/staff/dto/invite-staff.dto.ts
@@ -0,0 +1,15 @@
+import { IsArray, IsEmail, IsString, MinLength } from 'class-validator';
+
+export class InviteStaffDto {
+  @IsEmail()
+  email: string;
+
+  @IsString()
+  @MinLength(1)
+  name: string;
+
+  /** TAB_* permission names; EDIT implies READ after normalization. */
+  @IsArray()
+  @IsString({ each: true })
+  permissionNames: string[];
+}
--- a/backend/src/modules/staff/dto/preview-staff-invite.dto.ts
+++ b/backend/src/modules/staff/dto/preview-staff-invite.dto.ts
@@ -0,0 +1,6 @@
+import { IsString } from 'class-validator';
+
+export class PreviewStaffInviteDto {
+  @IsString()
+  token: string;
+}
--- a/backend/src/modules/staff/dto/update-staff-member.dto.ts
+++ b/backend/src/modules/staff/dto/update-staff-member.dto.ts
@@ -0,0 +1,13 @@
+import { IsArray, IsOptional, IsString, MinLength } from 'class-validator';
+
+export class UpdateStaffMemberDto {
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  name?: string;
+
+  @IsOptional()
+  @IsArray()
+  @IsString({ each: true })
+  permissionNames?: string[];
+}
--- a/backend/src/modules/staff/staff.controller.ts
+++ b/backend/src/modules/staff/staff.controller.ts
@@ -0,0 +1,80 @@
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  Patch,
+  Post,
+  Query,
+  Req,
+  UseGuards,
+} from '@nestjs/common';
+import { ApiBearerAuth, ApiOperation, ApiTags } from '@nestjs/swagger';
+import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
+import { AcceptStaffInviteDto } from './dto/accept-staff-invite.dto';
+import { InviteStaffDto } from './dto/invite-staff.dto';
+import { PreviewStaffInviteDto } from './dto/preview-staff-invite.dto';
+import { UpdateStaffMemberDto } from './dto/update-staff-member.dto';
+import { StaffService } from './staff.service';
+
+@ApiTags('staff')
+@ApiBearerAuth('JWT-auth')
+@Controller('staff')
+export class StaffController {
+  constructor(private readonly staffService: StaffService) {}
+
+  @Get('invitations/preview')
+  @ApiOperation({ summary: 'Preview invite info by token (public)' })
+  previewInvite(@Query() query: PreviewStaffInviteDto) {
+    return this.staffService.previewInvite(query.token);
+  }
+
+  @Post('invitations/accept')
+  @ApiOperation({ summary: 'Accept invite and activate account (public)' })
+  acceptInvite(@Body() dto: AcceptStaffInviteDto) {
+    return this.staffService.acceptInvite(dto);
+  }
+
+  @Get()
+  @UseGuards(JwtAuthGuard)
+  @ApiOperation({ summary: 'List organization members (requires TAB_STAFF_READ or owner)' })
+  list(@Req() req: { user: { id: string; organizationId?: string } }) {
+    const organizationId = this.staffService.getOrganizationIdFromUser(req.user);
+    return this.staffService.list(req.user.id, organizationId);
+  }
+
+  @Post('invite')
+  @UseGuards(JwtAuthGuard)
+  @ApiOperation({ summary: 'Invite staff (requires TAB_STAFF_EDIT or owner)' })
+  invite(
+    @Req() req: { user: { id: string; organizationId?: string } },
+    @Body() dto: InviteStaffDto,
+  ) {
+    const organizationId = this.staffService.getOrganizationIdFromUser(req.user);
+    return this.staffService.invite(req.user.id, organizationId, dto);
+  }
+
+  @Patch('members/:membershipId')
+  @UseGuards(JwtAuthGuard)
+  @ApiOperation({ summary: 'Update staff member name and/or permissions' })
+  updateMember(
+    @Req() req: { user: { id: string; organizationId?: string } },
+    @Param('membershipId') membershipId: string,
+    @Body() dto: UpdateStaffMemberDto,
+  ) {
+    const organizationId = this.staffService.getOrganizationIdFromUser(req.user);
+    return this.staffService.updateMember(req.user.id, organizationId, membershipId, dto);
+  }
+
+  @Delete('members/:membershipId')
+  @UseGuards(JwtAuthGuard)
+  @ApiOperation({ summary: 'Remove staff member from organization' })
+  removeMember(
+    @Req() req: { user: { id: string; organizationId?: string } },
+    @Param('membershipId') membershipId: string,
+  ) {
+    const organizationId = this.staffService.getOrganizationIdFromUser(req.user);
+    return this.staffService.removeMember(req.user.id, organizationId, membershipId);
+  }
+}
--- a/backend/src/modules/staff/staff.module.ts
+++ b/backend/src/modules/staff/staff.module.ts
@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { PrismaService } from '../../../prisma/prisma.service';
+import { StaffController } from './staff.controller';
+import { StaffService } from './staff.service';
+
+@Module({
+  controllers: [StaffController],
+  providers: [StaffService, PrismaService],
+})
+export class StaffModule {}
--- a/backend/src/modules/staff/staff.service.ts
+++ b/backend/src/modules/staff/staff.service.ts
@@ -0,0 +1,443 @@
+import {
+  BadRequestException,
+  ConflictException,
+  ForbiddenException,
+  Injectable,
+  NotFoundException,
+} from '@nestjs/common';
+import * as bcrypt from 'bcrypt';
+import { createHash, randomBytes } from 'crypto';
+import { PrismaService } from '../../../prisma/prisma.service';
+import { AcceptStaffInviteDto } from './dto/accept-staff-invite.dto';
+import { isUnlimitedSeats, normalizeTabPermissions } from '../../common/permissions';
+import { InviteStaffDto } from './dto/invite-staff.dto';
+import { UpdateStaffMemberDto } from './dto/update-staff-member.dto';
+
+@Injectable()
+export class StaffService {
+  constructor(private readonly prisma: PrismaService) {}
+
+  getOrganizationIdFromUser(user: { organizationId?: string }) {
+    if (!user?.organizationId) {
+      throw new BadRequestException('Organization is not selected');
+    }
+    return user.organizationId;
+  }
+
+  async list(userId: string, organizationId: string) {
+    const actor = await this.getActorMembership(userId, organizationId);
+    if (!actor || !this.canViewStaff(actor)) {
+      throw new ForbiddenException('You do not have access to staff management');
+    }
+
+    const org = await this.prisma.organization.findUnique({
+      where: { id: organizationId },
+      include: { plan: true },
+    });
+    if (!org) {
+      throw new NotFoundException('Organization not found');
+    }
+
+    const [members, seatsUsed] = await Promise.all([
+      this.prisma.membership.findMany({
+        where: { organizationId },
+        include: {
+          user: { select: { id: true, email: true, name: true } },
+          permissions: { include: { permission: true } },
+          invitations: {
+            orderBy: { createdAt: 'desc' },
+            take: 1,
+          },
+        },
+        orderBy: [{ isOwner: 'desc' }, { createdAt: 'asc' }],
+      }),
+      this.prisma.membership.count({
+        where: {
+          organizationId,
+          OR: [{ isOwner: true }, { isActive: true }],
+        },
+      }),
+    ]);
+
+    const maxUsers = org.plan.maxUsers;
+    const unlimited = isUnlimitedSeats(maxUsers);
+
+    return {
+      success: true,
+      data: {
+        members: members.map((m) => ({
+          id: m.id,
+          userId: m.user.id,
+          email: m.user.email,
+          name: m.user.name,
+          isOwner: m.isOwner,
+          isActive: m.isOwner ? true : m.isActive,
+          invitationStatus: this.getInvitationStatus(m),
+          invitedAt: m.invitations[0]?.createdAt?.toISOString() || null,
+          acceptedAt: m.invitations[0]?.acceptedAt?.toISOString() || null,
+          permissions: m.isOwner
+            ? null
+            : m.permissions.map((p) => p.permission.name),
+        })),
+        seats: {
+          used: seatsUsed,
+          limit: unlimited ? null : maxUsers,
+          unlimited,
+        },
+      },
+    };
+  }
+
+  async invite(userId: string, organizationId: string, dto: InviteStaffDto) {
+    const actor = await this.getActorMembership(userId, organizationId);
+    if (!actor || !this.canEditStaff(actor)) {
+      throw new ForbiddenException('You cannot invite or manage staff');
+    }
+
+    const email = dto.email.trim().toLowerCase();
+    const normalizedPerms = normalizeTabPermissions(dto.permissionNames);
+
+    const permissionRows = await this.prisma.permission.findMany({
+      where: { name: { in: normalizedPerms } },
+      select: { id: true, name: true },
+    });
+    if (permissionRows.length !== normalizedPerms.length) {
+      const ok = new Set(permissionRows.map((p) => p.name));
+      const missing = normalizedPerms.filter((n) => !ok.has(n));
+      throw new BadRequestException(`Unknown or invalid permissions: ${missing.join(', ')}`);
+    }
+
+    const plainToken = this.generateInviteToken();
+    const tokenHash = this.hashInviteToken(plainToken);
+
+    const result = await this.prisma.$transaction(async (tx) => {
+      const org = await tx.organization.findUnique({
+        where: { id: organizationId },
+        include: { plan: true },
+      });
+      if (!org) {
+        throw new NotFoundException('Organization not found');
+      }
+
+      const maxUsers = org.plan.maxUsers;
+      const seatsUsed = await tx.membership.count({
+        where: {
+          organizationId,
+          OR: [{ isOwner: true }, { isActive: true }],
+        },
+      });
+      if (!isUnlimitedSeats(maxUsers) && seatsUsed >= maxUsers) {
+        throw new BadRequestException(
+          `Your plan allows ${maxUsers} team members. Remove a member or upgrade to add more.`,
+        );
+      }
+
+      const existingUser = await tx.user.findUnique({ where: { email } });
+      let targetUserId: string;
+
+      if (existingUser) {
+        if (existingUser.id === org.ownerId) {
+          throw new BadRequestException('Organization owner is already a member');
+        }
+        const dup = await tx.membership.findUnique({
+          where: {
+            userId_organizationId: {
+              userId: existingUser.id,
+              organizationId,
+            },
+          },
+        });
+        if (dup) {
+          throw new ConflictException('This user is already a member of this organization');
+        }
+        targetUserId = existingUser.id;
+      } else {
+        const created = await tx.user.create({
+          data: {
+            email,
+            name: dto.name.trim(),
+            passwordHash: null,
+          },
+        });
+        targetUserId = created.id;
+      }
+
+      const membership = await tx.membership.create({
+        data: {
+          userId: targetUserId,
+          organizationId,
+          isOwner: false,
+          isActive: existingUser ? true : false,
+        },
+      });
+
+      if (permissionRows.length > 0) {
+        await tx.membershipPermission.createMany({
+          data: permissionRows.map((p) => ({
+            membershipId: membership.id,
+            permissionId: p.id,
+          })),
+        });
+      }
+
+      let inviteUrl: string | null = null;
+      let invitationId: string | null = null;
+
+      if (!existingUser) {
+        const invitation = await tx.staffInvitation.create({
+          data: {
+            membershipId: membership.id,
+            invitedById: userId,
+            tokenHash,
+            expiresAt: this.getInviteExpiryDate(),
+          },
+        });
+        invitationId = invitation.id;
+        inviteUrl = this.buildInviteUrl(plainToken);
+      }
+
+      return {
+        membershipId: membership.id,
+        userId: targetUserId,
+        invitationId,
+        inviteUrl,
+        isPending: !existingUser,
+      };
+    });
+
+    return {
+      success: true,
+      data: {
+        membershipId: result.membershipId,
+        userId: result.userId,
+        email,
+        invitationId: result.invitationId,
+        invitationUrl: result.inviteUrl,
+        invitationStatus: result.isPending ? 'PENDING' : 'ACCEPTED',
+      },
+    };
+  }
+
+  async previewInvite(token: string) {
+    const invitation = await this.findValidInvitation(token);
+    const org = invitation.membership.organization;
+    const user = invitation.membership.user;
+
+    return {
+      success: true,
+      data: {
+        email: user.email,
+        name: user.name,
+        organizationName: org.name,
+        expiresAt: invitation.expiresAt.toISOString(),
+        status: invitation.acceptedAt ? 'ACCEPTED' : 'PENDING',
+      },
+    };
+  }
+
+  async acceptInvite(dto: AcceptStaffInviteDto) {
+    const invitation = await this.findValidInvitation(dto.token);
+
+    if (invitation.acceptedAt) {
+      throw new BadRequestException('This invitation has already been accepted');
+    }
+
+    const passwordHash = await bcrypt.hash(dto.password, 10);
+    const now = new Date();
+
+    await this.prisma.$transaction(async (tx) => {
+      await tx.user.update({
+        where: { id: invitation.membership.userId },
+        data: {
+          passwordHash,
+          name: dto.name.trim(),
+        },
+      });
+
+      await tx.membership.update({
+        where: { id: invitation.membershipId },
+        data: { isActive: true },
+      });
+
+      await tx.staffInvitation.update({
+        where: { id: invitation.id },
+        data: { acceptedAt: now },
+      });
+    });
+
+    return {
+      success: true,
+      data: {
+        email: invitation.membership.user.email,
+      },
+      message: 'Invitation accepted. You can now log in.',
+    };
+  }
+
+  async updateMember(
+    actorUserId: string,
+    organizationId: string,
+    membershipId: string,
+    dto: UpdateStaffMemberDto,
+  ) {
+    const actor = await this.getActorMembership(actorUserId, organizationId);
+    if (!actor || !this.canEditStaff(actor)) {
+      throw new ForbiddenException('You cannot edit staff');
+    }
+
+    const target = await this.prisma.membership.findFirst({
+      where: { id: membershipId, organizationId },
+      include: {
+        user: true,
+        permissions: { include: { permission: true } },
+      },
+    });
+
+    if (!target) {
+      throw new NotFoundException('Member not found');
+    }
+    if (target.isOwner) {
+      throw new ForbiddenException('Owner membership cannot be edited here');
+    }
+
+    if (dto.name !== undefined) {
+      await this.prisma.user.update({
+        where: { id: target.userId },
+        data: { name: dto.name.trim() },
+      });
+    }
+
+    if (dto.permissionNames !== undefined) {
+      const normalizedPerms = normalizeTabPermissions(dto.permissionNames);
+      const permissionRows = await this.prisma.permission.findMany({
+        where: { name: { in: normalizedPerms } },
+        select: { id: true, name: true },
+      });
+      if (permissionRows.length !== normalizedPerms.length) {
+        const ok = new Set(permissionRows.map((p) => p.name));
+        const missing = normalizedPerms.filter((n) => !ok.has(n));
+        throw new BadRequestException(`Unknown or invalid permissions: ${missing.join(', ')}`);
+      }
+
+      await this.prisma.$transaction([
+        this.prisma.membershipPermission.deleteMany({ where: { membershipId: target.id } }),
+        ...(permissionRows.length
+          ? [
+              this.prisma.membershipPermission.createMany({
+                data: permissionRows.map((p) => ({
+                  membershipId: target.id,
+                  permissionId: p.id,
+                })),
+              }),
+            ]
+          : []),
+      ]);
+    }
+
+    return { success: true, message: 'Member updated' };
+  }
+
+  async removeMember(actorUserId: string, organizationId: string, membershipId: string) {
+    const actor = await this.getActorMembership(actorUserId, organizationId);
+    if (!actor || !this.canEditStaff(actor)) {
+      throw new ForbiddenException('You cannot remove staff');
+    }
+
+    const target = await this.prisma.membership.findFirst({
+      where: { id: membershipId, organizationId },
+    });
+
+    if (!target) {
+      throw new NotFoundException('Member not found');
+    }
+    if (target.isOwner) {
+      throw new ForbiddenException('Cannot remove the organization owner');
+    }
+
+    await this.prisma.membership.delete({ where: { id: membershipId } });
+
+    return { success: true, message: 'Member removed' };
+  }
+
+  private async getActorMembership(userId: string, organizationId: string) {
+    return this.prisma.membership.findFirst({
+      where: { userId, organizationId },
+      include: { permissions: { include: { permission: true } } },
+    });
+  }
+
+  private getInvitationStatus(m: {
+    isOwner: boolean;
+    isActive: boolean;
+    invitations: { acceptedAt: Date | null; revokedAt: Date | null; expiresAt: Date }[];
+  }): 'ACTIVE' | 'PENDING' | 'EXPIRED' {
+    if (m.isOwner || m.isActive) return 'ACTIVE';
+    const invitation = m.invitations[0];
+    if (!invitation) return 'EXPIRED';
+    if (invitation.acceptedAt || invitation.revokedAt) return 'ACTIVE';
+    return invitation.expiresAt.getTime() > Date.now() ? 'PENDING' : 'EXPIRED';
+  }
+
+  private generateInviteToken(): string {
+    return randomBytes(32).toString('hex');
+  }
+
+  private hashInviteToken(token: string): string {
+    return createHash('sha256').update(token).digest('hex');
+  }
+
+  private getInviteExpiryDate(): Date {
+    const d = new Date();
+    d.setDate(d.getDate() + 7);
+    return d;
+  }
+
+  private buildInviteUrl(token: string): string {
+    const appUrl = process.env.FRONTEND_URL || 'http://localhost:3001';
+    return `${appUrl}/accept-invite?token=${encodeURIComponent(token)}`;
+  }
+
+  private async findValidInvitation(token: string) {
+    const invitation = await this.prisma.staffInvitation.findUnique({
+      where: { tokenHash: this.hashInviteToken(token) },
+      include: {
+        membership: {
+          include: {
+            user: { select: { id: true, email: true, name: true } },
+            organization: { select: { id: true, name: true } },
+          },
+        },
+      },
+    });
+
+    if (!invitation) {
+      throw new NotFoundException('Invitation not found');
+    }
+    if (invitation.revokedAt) {
+      throw new BadRequestException('Invitation has been revoked');
+    }
+    if (invitation.expiresAt.getTime() <= Date.now()) {
+      throw new BadRequestException('Invitation has expired');
+    }
+    return invitation;
+  }
+
+  private canViewStaff(m: {
+    isOwner: boolean;
+    permissions: { permission: { name: string } }[];
+  }): boolean {
+    if (m.isOwner) return true;
+    return m.permissions.some(
+      (p) =>
+        p.permission.name === 'TAB_STAFF_READ' || p.permission.name === 'TAB_STAFF_EDIT',
+    );
+  }
+
+  private canEditStaff(m: {
+    isOwner: boolean;
+    permissions: { permission: { name: string } }[];
+  }): boolean {
+    if (m.isOwner) return true;
+    return m.permissions.some((p) => p.permission.name === 'TAB_STAFF_EDIT');
+  }
+}
--- a/frontend/next.config.ts
+++ b/frontend/next.config.ts
@@ -9,11 +9,12 @@ const nextConfig = {
  // Disable x-powered-by header for security
  poweredByHeader: false,
  
-  // Configure image domains if needed
+  // Configure allowed remote image sources
  images: {
-    domains: process.env.NODE_ENV === 'production' 
-      ? ['yourdomain.com'] 
-      : ['localhost'],
+    remotePatterns:
+      process.env.NODE_ENV === 'production'
+        ? [{ protocol: 'https', hostname: 'yourdomain.com' }]
+        : [{ protocol: 'http', hostname: 'localhost' }],
  },
  
  // Environment variables that will be available at build time
--- a/frontend/src/app/(dashboard)/billing/page.tsx
+++ b/frontend/src/app/(dashboard)/billing/page.tsx
@@ -2,9 +2,9 @@
 'use client';
 import { useState } from 'react';
 import { Search, Filter, Plus } from 'lucide-react';
-import { Button } from '@/components/ui/Button';
-import { Input } from '@/components/ui/Input';
-import { Badge } from '@/components/ui/Badge';
+import { Button } from '@/components/ui/common/Button';
+import { Input } from '@/components/ui/common/Input';
+import { Badge } from '@/components/ui/common/Badge';
 // Mock data matching your design
 const invoices = [
    { id: '#123456', patient: 'Ali Rahmani', date: '24/9/2026', service: 'Hygiene', amount: 300, paid: 0, status: 'unpaid' },
--- a/frontend/src/app/(dashboard)/layout.tsx
+++ b/frontend/src/app/(dashboard)/layout.tsx
@@ -1,15 +1,21 @@
 'use client';

 import { memo, useEffect } from 'react';
-import { useRouter } from 'next/navigation';
+import { usePathname, useRouter } from 'next/navigation';
 import { useAuth } from '@/lib/hooks/useAuth';
-import Sidebar from '@/components/ui/Sidebar';
-import { ThemeToggle } from '@/components/ui/ThemeToggle';
-import { DashboardAccountMenu } from '@/components/ui/DashboardAccountMenu';
+import Sidebar from '@/components/ui/common/Sidebar';
+import { ThemeToggle } from '@/components/ui/common/ThemeToggle';
+import { DashboardAccountMenu } from '@/components/ui/dashboard/DashboardAccountMenu';
+import {
+  firstAccessibleDashboardPath,
+  getRequiredReadPermissionForPath,
+  hasPermission,
+} from '@/shared/permissions';

 export default function DashboardLayout({ children }: { children: React.ReactNode }) {
  const { user, currentOrganization, isAuthReady } = useAuth();
  const router = useRouter();
+  const pathname = usePathname();

  // ✅ AUTH GUARD (runs once per navigation group)
  useEffect(() => {
@@ -24,7 +30,12 @@ export default function DashboardLayout({ children }: { children: React.ReactNod
      router.replace('/select-organization');
      return;
    }
-  }, [isAuthReady, user, currentOrganization, router]);
+
+    const required = getRequiredReadPermissionForPath(pathname);
+    if (required && !hasPermission(currentOrganization, required)) {
+      router.replace(firstAccessibleDashboardPath(currentOrganization));
+    }
+  }, [isAuthReady, user, currentOrganization, router, pathname]);

  // ✅ LOADING ONLY FOR INITIAL LOAD
  if (!isAuthReady) {
@@ -66,7 +77,7 @@ const DashboardHeader = memo(function DashboardHeader({
  organizationName: string;
 }) {
  return (
-    <header className="h-[71px] flex justify-between items-center gap-4 px-6 border-b border-border/70 backdrop-blur-sm">
+    <header className="relative z-40 h-[71px] flex justify-between items-center gap-4 px-6 border-b border-border/70 backdrop-blur-sm">
      <h2 className="text-lg font-medium truncate min-w-0">{organizationName}</h2>

      <div className="flex items-center gap-3 shrink-0">
--- a/frontend/src/app/(dashboard)/patients/page.tsx
+++ b/frontend/src/app/(dashboard)/patients/page.tsx
@@ -2,7 +2,7 @@

 import { useEffect, useMemo, useState } from 'react';
 import { Plus } from 'lucide-react';
-import { Button } from '@/components/ui/Button';
+import { Button } from '@/components/ui/common/Button';
 import { patientsApi } from '@/lib/api/patients';
 import {
  CreatePatientInput,
@@ -10,10 +10,10 @@ import {
  Patient,
  TreatmentHistoryItem,
 } from '@/types/patient';
-import { PatientSearchSelect } from '@/components/patients/PatientSearchSelect';
-import { CreatePatientModal } from '@/components/patients/CreatePatientModal';
-import { PatientSummaryCard } from '@/components/patients/PatientSummaryCard';
-import { TreatmentHistoryPreview } from '@/components/patients/TreatmentHistoryPreview';
+import { PatientSearchSelect } from '../../../components/ui/patient/PatientSearchSelect';
+import { CreatePatientModal } from '../../../components/ui/patient/CreatePatientModal';
+import { PatientSummaryCard } from '../../../components/ui/patient/PatientSummaryCard';
+import { TreatmentHistoryPreview } from '../../../components/ui/patient/TreatmentHistoryPreview';

 const EMPTY_PATIENT_FORM: CreatePatientInput = {
  firstName: '',
@@ -201,7 +201,7 @@ export default function PatientsPage() {
      </div>

      {(errorMessage || successMessage) && (
-        <div className="absolute bottom-0 left-0 right-0 z-50 w-full">
+        <div className="absolute bottom-0 left-0 right-0 z-10 w-full">
          {errorMessage && (
            <div className="rounded-[var(--radius-sm)] border border-red-500/50 bg-red-500/10 px-3 py-2 text-sm text-red-300 shadow-lg">
              {errorMessage}
--- a/frontend/src/app/(dashboard)/settings/organizations/page.tsx
+++ b/frontend/src/app/(dashboard)/settings/organizations/page.tsx
@@ -0,0 +1,20 @@
+'use client';
+
+import Link from 'next/link';
+import { OrganizationSelectorContent } from '@/components/ui/organization/OrganizationSelectorContent';
+
+export default function DashboardOrganizationsSettingsPage() {
+  return (
+    <div className="max-w-3xl space-y-6">
+      <div>
+        <Link
+          href="/today"
+          className="text-sm text-primary hover:opacity-90"
+        >
+          ← Back to app
+        </Link>
+      </div>
+      <OrganizationSelectorContent />
+    </div>
+  );
+}
--- a/frontend/src/app/(dashboard)/settings/subscriptions/page.tsx
+++ b/frontend/src/app/(dashboard)/settings/subscriptions/page.tsx
@@ -5,7 +5,7 @@ import Link from 'next/link';
 import { useRouter } from 'next/navigation';
 import { useAuth } from '@/lib/hooks/useAuth';
 import { authApi } from '@/lib/api/auth';
-import type { SubscriptionAlertData } from '@/types';
+import type { SubscriptionAlertData } from '@/types/subscription';

 export default function SubscriptionsSettingsPage() {
  const { currentOrganization } = useAuth();
@@ -39,9 +39,24 @@ export default function SubscriptionsSettingsPage() {

  const plan = currentOrganization.plan;
  const maxUsers = plan?.maxUsers;
+  const isUnlimited = typeof maxUsers === 'number' && maxUsers >= 999999;
+  const seatsUsed = alert?.seatsUsed;
+  const seatsRemaining =
+    typeof seatsUsed === 'number' && typeof maxUsers === 'number' && !isUnlimited
+      ? Math.max(0, maxUsers - seatsUsed)
+      : null;
+  const daysUntilPlanEnd = alert?.daysUntilPlanEnd ?? null;
+  const planDayTone =
+    daysUntilPlanEnd == null
+      ? 'text-text-primary'
+      : daysUntilPlanEnd > 20
+        ? 'text-emerald-400'
+        : daysUntilPlanEnd >= 10
+          ? 'text-amber-300'
+          : 'text-red-400';

  return (
-    <div className="max-w-xl space-y-6">
+    <div className="max-w-4xl space-y-6">
      <div>
        <Link
          href="/today"
@@ -59,21 +74,38 @@ export default function SubscriptionsSettingsPage() {
      </div>

      <div className="surface-card p-6 space-y-4">
-        <div className="flex flex-wrap gap-4 justify-between">
+        <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-5">
          <div>
            <p className="text-xs text-text-muted uppercase tracking-wide">Current plan</p>
            <p className="text-lg font-medium text-text-primary capitalize">
              {plan?.name ?? '—'}
            </p>
          </div>
-          {typeof maxUsers === 'number' && maxUsers < 999999 && (
          <div>
-              <p className="text-xs text-text-muted uppercase tracking-wide">Seats (this org)</p>
+            <p className="text-xs text-text-muted uppercase tracking-wide">Plan price</p>
            <p className="text-lg font-medium text-text-primary">
-                {alert?.seatsUsed ?? '—'} / {maxUsers}
+              {typeof plan?.price === 'number' ? `$${plan.price}` : '—'}
+            </p>
+          </div>
+          <div>
+            <p className="text-xs text-text-muted uppercase tracking-wide">Seats used</p>
+            <p className="text-lg font-medium text-text-primary">
+              {typeof seatsUsed === 'number' ? seatsUsed : '—'}
+              {typeof maxUsers === 'number' ? ` / ${isUnlimited ? 'Unlimited' : maxUsers}` : ''}
+            </p>
+          </div>
+          <div>
+            <p className="text-xs text-text-muted uppercase tracking-wide">Seats remaining</p>
+            <p className="text-lg font-medium text-text-primary">
+              {isUnlimited ? 'Unlimited' : seatsRemaining ?? '—'}
+            </p>
+          </div>
+          <div>
+            <p className="text-xs text-text-muted uppercase tracking-wide">Days remaining</p>
+            <p className={`text-lg font-medium ${planDayTone}`}>
+              {daysUntilPlanEnd ?? '—'}
            </p>
          </div>
-          )}
        </div>

        {alert?.showWarning && (
--- a/frontend/src/app/(dashboard)/staff/components/staffPermissions.ts
+++ b/frontend/src/app/(dashboard)/staff/components/staffPermissions.ts
@@ -0,0 +1,43 @@
+/** Feature groups for staff invite/edit UI — matches backend seed */
+export const STAFF_FEATURE_GROUPS = [
+  { label: 'Today', read: 'TAB_TODAY_READ', edit: 'TAB_TODAY_EDIT' },
+  { label: 'Patients', read: 'TAB_PATIENTS_READ', edit: 'TAB_PATIENTS_EDIT' },
+  { label: 'Appointments', read: 'TAB_APPOINTMENTS_READ', edit: 'TAB_APPOINTMENTS_EDIT' },
+  { label: 'Staff Management', read: 'TAB_STAFF_READ', edit: 'TAB_STAFF_EDIT' },
+  { label: 'Lab Management', read: 'TAB_LAB_READ', edit: 'TAB_LAB_EDIT' },
+  { label: 'Billing', read: 'TAB_BILLING_READ', edit: 'TAB_BILLING_EDIT' },
+  { label: 'Reports', read: 'TAB_REPORTS_READ', edit: 'TAB_REPORTS_EDIT' },
+] as const;
+
+/** Map EDIT key -> { read, edit } for checkbox grid */
+export type FeaturePermState = Record<string, { read: boolean; edit: boolean }>;
+
+export function emptyFeaturePermissionState(): FeaturePermState {
+  const s: FeaturePermState = {};
+  for (const g of STAFF_FEATURE_GROUPS) {
+    s[g.edit] = { read: false, edit: false };
+  }
+  return s;
+}
+
+export function featureStateFromPermissionNames(names: string[]): FeaturePermState {
+  const set = new Set(names);
+  const s = emptyFeaturePermissionState();
+  for (const g of STAFF_FEATURE_GROUPS) {
+    const hasEdit = set.has(g.edit);
+    const hasRead = set.has(g.read) || hasEdit;
+    s[g.edit] = { read: hasRead, edit: hasEdit };
+  }
+  return s;
+}
+
+export function permissionNamesFromFeatureState(state: FeaturePermState): string[] {
+  const out: string[] = [];
+  for (const g of STAFF_FEATURE_GROUPS) {
+    const cell = state[g.edit];
+    if (!cell) continue;
+    if (cell.edit) out.push(g.edit);
+    else if (cell.read) out.push(g.read);
+  }
+  return out;
+}
--- a/frontend/src/app/(dashboard)/staff/page.tsx
+++ b/frontend/src/app/(dashboard)/staff/page.tsx
@@ -1,10 +1,501 @@
-export default function StaffPage() {
+'use client';
+
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import { useRouter } from 'next/navigation';
+import {
+  firstAccessibleDashboardPath,
+  canEditStaff,
+  canViewStaff,
+} from '@/shared/permissions';
+import {
+  STAFF_FEATURE_GROUPS,
+  permissionNamesFromFeatureState,
+  emptyFeaturePermissionState,
+  featureStateFromPermissionNames,
+  formatAccessSummary,
+  type FeaturePermState,
+} from './staff-permission-form';
+import { UserPlus, Pencil, Trash2, Copy, Check, X, Clock3 } from 'lucide-react';
+import { useAuth } from '@/lib/hooks/useAuth';
+import { staffApi, type StaffMemberDto } from '@/lib/api/staff';
+import { Button } from '@/components/ui/common/Button';
+import { Input } from '@/components/ui/common/Input';
+import { Checkbox } from '@/components/ui/common/Checkbox';
+import type { ApiError } from '@/types/api';
+
+function formatApiMessage(err: unknown): string {
+  if (!err || typeof err !== 'object') return 'Something went wrong';
+  const m = (err as ApiError).message;
+  if (Array.isArray(m)) return m.join(', ');
+  if (typeof m === 'string') return m;
+  return 'Something went wrong';
+}
+
+function PermissionGrid({
+  state,
+  onChange,
+  disabled,
+}: {
+  state: FeaturePermState;
+  onChange: (next: FeaturePermState) => void;
+  disabled?: boolean;
+}) {
+  const setRead = (editKey: string, read: boolean) => {
+    const cur = state[editKey] ?? { read: false, edit: false };
+    onChange({
+      ...state,
+      [editKey]: { read, edit: read ? cur.edit : false },
+    });
+  };
+
+  const setEdit = (editKey: string, edit: boolean) => {
+    const cur = state[editKey] ?? { read: false, edit: false };
+    onChange({
+      ...state,
+      [editKey]: { read: edit || cur.read, edit },
+    });
+  };
+
  return (
-    <div className="space-y-3">
-      <h1 className="text-2xl font-semibold text-text-primary">Staff Management</h1>
-      <p className="text-sm text-text-secondary">
-        Staff management module is coming soon.
-      </p>
+    <div className="grid gap-3 sm:grid-cols-2">
+      {STAFF_FEATURE_GROUPS.map((g) => {
+        const cell = state[g.edit] ?? { read: false, edit: false };
+        return (
+          <div
+            key={g.edit}
+            className="flex flex-col gap-3 rounded-[var(--radius-md)] border border-border/60 bg-background-card/50 px-3 py-3"
+          >
+            <span className="text-sm font-medium text-text-primary">{g.label}</span>
+            <div className="flex flex-col gap-2.5 pl-0.5">
+              <Checkbox
+                checked={cell.read}
+                disabled={disabled}
+                label="View"
+                onChange={(v) => setRead(g.edit, v)}
+              />
+              <Checkbox
+                checked={cell.edit}
+                disabled={disabled}
+                label="Edit"
+                onChange={(v) => setEdit(g.edit, v)}
+              />
+            </div>
+          </div>
+        );
+      })}
+    </div>
+  );
+}
+
+export default function StaffPage() {
+  const router = useRouter();
+  const { currentOrganization, user } = useAuth();
+  const [members, setMembers] = useState<StaffMemberDto[]>([]);
+  const [seats, setSeats] = useState<{
+    used: number;
+    limit: number | null;
+    unlimited: boolean;
+  } | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+  const [success, setSuccess] = useState('');
+
+  const [inviteOpen, setInviteOpen] = useState(false);
+  const [inviteEmail, setInviteEmail] = useState('');
+  const [inviteName, setInviteName] = useState('');
+  const [invitePerms, setInvitePerms] = useState(() => emptyFeaturePermissionState());
+  const [inviteLoading, setInviteLoading] = useState(false);
+  const [copiedInviteLink, setCopiedInviteLink] = useState(false);
+  const [lastInviteInfo, setLastInviteInfo] = useState<{
+    name: string;
+    email: string;
+    invitationUrl: string | null;
+    invitationStatus: 'PENDING' | 'ACCEPTED';
+  } | null>(null);
+
+  const [editing, setEditing] = useState<StaffMemberDto | null>(null);
+  const [editName, setEditName] = useState('');
+  const [editPerms, setEditPerms] = useState(() => emptyFeaturePermissionState());
+  const [editLoading, setEditLoading] = useState(false);
+
+  const canEdit = useMemo(() => canEditStaff(currentOrganization), [currentOrganization]);
+  const atSeatLimit = useMemo(() => {
+    if (!seats || seats.unlimited) return false;
+    if (seats.limit == null) return false;
+    return seats.used >= seats.limit;
+  }, [seats]);
+
+  const load = useCallback(async () => {
+    setError('');
+    setLoading(true);
+    try {
+      const res = await staffApi.list();
+      setMembers(res.data.members);
+      setSeats(res.data.seats);
+    } catch (e) {
+      setError(formatApiMessage(e));
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void load();
+  }, [load]);
+
+  useEffect(() => {
+    if (!currentOrganization) return;
+    if (!canViewStaff(currentOrganization)) {
+      router.replace(firstAccessibleDashboardPath(currentOrganization));
+    }
+  }, [currentOrganization, router]);
+
+  useEffect(() => {
+    if (!success) return;
+    const t = setTimeout(() => setSuccess(''), 4000);
+    return () => clearTimeout(t);
+  }, [success]);
+
+  async function submitInvite() {
+    setInviteLoading(true);
+    setError('');
+    setLastInviteInfo(null);
+    const displayName = inviteName.trim();
+    const displayEmail = inviteEmail.trim();
+    try {
+      const permissionNames = permissionNamesFromFeatureState(invitePerms);
+      const res = await staffApi.invite({
+        email: displayEmail,
+        name: displayName,
+        permissionNames,
+      });
+      setLastInviteInfo({
+        name: displayName,
+        email: res.data.email,
+        invitationUrl: res.data.invitationUrl,
+        invitationStatus: res.data.invitationStatus,
+      });
+      setSuccess('');
+      setInviteOpen(false);
+      setInviteEmail('');
+      setInviteName('');
+      setInvitePerms(emptyFeaturePermissionState());
+      await load();
+    } catch (e) {
+      setError(formatApiMessage(e));
+    } finally {
+      setInviteLoading(false);
+    }
+  }
+
+  function openEdit(m: StaffMemberDto) {
+    if (m.isOwner) return;
+    setEditing(m);
+    setEditName(m.name);
+    setEditPerms(
+      featureStateFromPermissionNames(m.permissions ?? []),
+    );
+  }
+
+  async function submitEdit() {
+    if (!editing) return;
+    setEditLoading(true);
+    setError('');
+    try {
+      await staffApi.updateMember(editing.id, {
+        name: editName.trim(),
+        permissionNames: permissionNamesFromFeatureState(editPerms),
+      });
+      setSuccess('Member updated');
+      setEditing(null);
+      await load();
+    } catch (e) {
+      setError(formatApiMessage(e));
+    } finally {
+      setEditLoading(false);
+    }
+  }
+
+  async function removeMember(m: StaffMemberDto) {
+    if (m.isOwner) return;
+    if (m.userId === user?.id) {
+      if (!confirm('Remove yourself from this organization? You will lose access.')) return;
+    } else {
+      if (!confirm(`Remove ${m.name} from this organization?`)) return;
+    }
+    setError('');
+    try {
+      await staffApi.removeMember(m.id);
+      setSuccess('Member removed');
+      await load();
+    } catch (e) {
+      setError(formatApiMessage(e));
+    }
+  }
+
+  if (!currentOrganization || !canViewStaff(currentOrganization)) {
+    return (
+      <p className="text-sm text-text-secondary">Redirecting…</p>
+    );
+  }
+
+  return (
+    <div className="space-y-6 max-w-5xl">
+      <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
+        <div>
+          <h1 className="text-2xl font-semibold text-text-primary">Staff Management</h1>
+          <p className="text-sm text-text-secondary mt-1">
+            Invite teammates, set tab access, and stay within your plan seat limit.
+          </p>
+        </div>
+        {canEdit && (
+          <Button
+            size="sm"
+            onClick={() => {
+              setInviteOpen(true);
+              setLastInviteInfo(null);
+            }}
+            disabled={atSeatLimit}
+            className="shrink-0"
+          >
+            <UserPlus className="w-4 h-4 mr-2" />
+            Invite member
+          </Button>
+        )}
+      </div>
+
+      {seats && (
+        <p className="text-sm text-text-secondary">
+          Seats:{' '}
+          <span className="text-text-primary font-medium">
+            {seats.used}
+            {seats.unlimited ? ' (unlimited plan)' : ` / ${seats.limit}`}
+          </span>
+          {!seats.unlimited && atSeatLimit && (
+            <span className="text-amber-600 dark:text-amber-400 ml-2">
+              Limit reached — remove a member or upgrade your plan.
+            </span>
+          )}
+        </p>
+      )}
+
+      {error && (
+        <div className="rounded-[var(--radius-md)] border border-red-500/40 bg-red-500/10 px-4 py-3 text-sm text-red-700 dark:text-red-300">
+          {error}
+        </div>
+      )}
+
+      {success && (
+        <div className="rounded-[var(--radius-md)] border border-primary/30 bg-primary-soft/40 px-4 py-3 text-sm text-text-primary">
+          {success}
+        </div>
+      )}
+
+      {lastInviteInfo && (
+        <div className="relative rounded-[var(--radius-md)] border border-border-strong bg-background-secondary/90 px-4 py-3 pr-12 shadow-[inset_0_1px_0_rgba(255,255,255,0.04)] space-y-3">
+          <button
+            type="button"
+            className="absolute right-2 top-2 p-1.5 rounded-[var(--radius-sm)] text-text-muted hover:text-text-primary hover:bg-background-card/80"
+            aria-label="Dismiss"
+            onClick={() => {
+              setLastInviteInfo(null);
+            }}
+          >
+            <X className="w-4 h-4" />
+          </button>
+          <p className="text-sm text-text-primary pr-6">
+            <span className="font-medium">{lastInviteInfo.name}</span> ({lastInviteInfo.email}) was invited.
+            {lastInviteInfo.invitationStatus === 'PENDING'
+              ? ' Invitation is pending until they open the link, set a password, and log in.'
+              : ' Invitation was accepted immediately.'}
+          </p>
+          {lastInviteInfo.invitationUrl && (
+            <div className="space-y-2 pt-1 border-t border-border/60">
+              <p className="text-xs font-medium text-text-secondary uppercase tracking-wide">
+                Invite link
+              </p>
+              <div className="flex flex-wrap items-center gap-2">
+                <code className="text-sm px-2 py-1.5 rounded-[var(--radius-sm)] bg-background-card border border-border font-mono break-all">
+                  {lastInviteInfo.invitationUrl}
+                </code>
+                <Button
+                  type="button"
+                  variant="outline"
+                  size="sm"
+                  onClick={async () => {
+                    try {
+                      await navigator.clipboard.writeText(lastInviteInfo.invitationUrl as string);
+                      setCopiedInviteLink(true);
+                      setTimeout(() => setCopiedInviteLink(false), 1500);
+                    } catch {
+                      setError('Could not copy invitation link');
+                    }
+                  }}
+                >
+                  {copiedInviteLink ? <Check className="w-4 h-4" /> : <Copy className="w-4 h-4" />}
+                  <span className="ml-1">{copiedInviteLink ? 'Copied' : 'Copy link'}</span>
+                </Button>
+              </div>
+              <p className="text-xs text-text-muted">
+                Share this link manually via SMS or email. They must set password first.
+              </p>
+            </div>
+          )}
+        </div>
+      )}
+
+      {loading ? (
+        <p className="text-sm text-text-secondary">Loading team…</p>
+      ) : (
+        <div className="overflow-x-auto rounded-[var(--radius-md)] border border-border/70">
+          <table className="w-full text-sm">
+            <thead>
+              <tr className="border-b border-border/70 text-left text-text-secondary">
+                <th className="p-3 font-medium">Name</th>
+                <th className="p-3 font-medium">Email</th>
+                <th className="p-3 font-medium">Role</th>
+                <th className="p-3 font-medium">Status</th>
+                <th className="p-3 font-medium">Access</th>
+                {canEdit && <th className="p-3 font-medium w-28">Actions</th>}
+              </tr>
+            </thead>
+            <tbody>
+              {members.map((m) => (
+                <tr key={m.id} className="border-b border-border/40 last:border-0">
+                  <td className="p-3 text-text-primary">{m.name}</td>
+                  <td className="p-3 text-text-secondary">{m.email}</td>
+                  <td className="p-3">
+                    {m.isOwner ? (
+                      <span className="text-primary font-medium">Owner</span>
+                    ) : (
+                      <span className="text-text-secondary">Staff</span>
+                    )}
+                  </td>
+                  <td className="p-3">
+                    {m.isOwner || m.invitationStatus === 'ACTIVE' ? (
+                      <span className="inline-flex items-center rounded-full border border-emerald-600/40 bg-emerald-600/15 px-2 py-0.5 text-xs text-emerald-400">
+                        Active
+                      </span>
+                    ) : m.invitationStatus === 'PENDING' ? (
+                      <span className="inline-flex items-center gap-1 rounded-full border border-amber-500/40 bg-amber-500/15 px-2 py-0.5 text-xs text-amber-300">
+                        <Clock3 className="h-3 w-3" />
+                        Pending
+                      </span>
+                    ) : (
+                      <span className="inline-flex items-center rounded-full border border-red-500/40 bg-red-500/15 px-2 py-0.5 text-xs text-red-300">
+                        Expired
+                      </span>
+                    )}
+                  </td>
+                  <td className="p-3 text-text-secondary max-w-md">
+                    {m.isOwner ? (
+                      <span className="text-text-muted">All features</span>
+                    ) : (
+                      <span className="line-clamp-3 text-sm leading-relaxed">
+                        {formatAccessSummary(m.permissions)}
+                      </span>
+                    )}
+                  </td>
+                  {canEdit && (
+                    <td className="p-3">
+                      {!m.isOwner && (
+                        <div className="flex items-center gap-1">
+                          <button
+                            type="button"
+                            className="p-2 rounded-md text-text-secondary hover:bg-background-card/80 hover:text-text-primary"
+                            aria-label="Edit member"
+                            onClick={() => openEdit(m)}
+                          >
+                            <Pencil className="w-4 h-4" />
+                          </button>
+                          <button
+                            type="button"
+                            className="p-2 rounded-md text-text-secondary hover:bg-red-500/15 hover:text-red-600"
+                            aria-label="Remove member"
+                            onClick={() => void removeMember(m)}
+                          >
+                            <Trash2 className="w-4 h-4" />
+                          </button>
+                        </div>
+                      )}
+                    </td>
+                  )}
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+
+      {inviteOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/50">
+          <div
+            className="w-full max-w-lg max-h-[90vh] overflow-y-auto rounded-[var(--radius-md)] border border-border bg-background-secondary p-6 shadow-xl space-y-4"
+            role="dialog"
+            aria-modal="true"
+            aria-labelledby="invite-staff-title"
+          >
+            <h2 id="invite-staff-title" className="text-lg font-semibold text-text-primary">
+              Invite team member
+            </h2>
+            <Input
+              label="Email"
+              type="email"
+              value={inviteEmail}
+              onChange={(e) => setInviteEmail(e.target.value)}
+              autoComplete="off"
+            />
+            <Input
+              label="Display name"
+              value={inviteName}
+              onChange={(e) => setInviteName(e.target.value)}
+            />
+            <div>
+              <p className="text-sm font-medium text-text-secondary mb-2">Tab access</p>
+              <PermissionGrid state={invitePerms} onChange={setInvitePerms} />
+            </div>
+            <div className="flex justify-end gap-2 pt-2">
+              <Button variant="outline" type="button" onClick={() => setInviteOpen(false)}>
+                Cancel
+              </Button>
+              <Button
+                type="button"
+                isLoading={inviteLoading}
+                disabled={!inviteEmail.trim() || !inviteName.trim()}
+                onClick={() => void submitInvite()}
+              >
+                Send invite
+              </Button>
+            </div>
+          </div>
+        </div>
+      )}
+
+      {editing && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/50">
+          <div
+            className="w-full max-w-lg max-h-[90vh] overflow-y-auto rounded-[var(--radius-md)] border border-border bg-background-secondary p-6 shadow-xl space-y-4"
+            role="dialog"
+            aria-modal="true"
+          >
+            <h2 className="text-lg font-semibold text-text-primary">Edit member</h2>
+            <p className="text-xs text-text-muted">{editing.email}</p>
+            <Input label="Display name" value={editName} onChange={(e) => setEditName(e.target.value)} />
+            <div>
+              <p className="text-sm font-medium text-text-secondary mb-2">Tab access</p>
+              <PermissionGrid state={editPerms} onChange={setEditPerms} />
+            </div>
+            <div className="flex justify-end gap-2 pt-2">
+              <Button variant="outline" type="button" onClick={() => setEditing(null)}>
+                Cancel
+              </Button>
+              <Button type="button" isLoading={editLoading} onClick={() => void submitEdit()}>
+                Save
+              </Button>
+            </div>
+          </div>
+        </div>
+      )}
    </div>
  );
 }
--- a/frontend/src/app/(dashboard)/staff/staff-permission-form.ts
+++ b/frontend/src/app/(dashboard)/staff/staff-permission-form.ts
@@ -0,0 +1,60 @@
+/**
+ * Staff route only: tab matrix + checkbox state ↔ TAB_* permission names.
+ * Add presentational pieces under ./components/ as the UI grows.
+ */
+
+export const STAFF_FEATURE_GROUPS = [
+  { label: 'Today', read: 'TAB_TODAY_READ', edit: 'TAB_TODAY_EDIT' },
+  { label: 'Patients', read: 'TAB_PATIENTS_READ', edit: 'TAB_PATIENTS_EDIT' },
+  { label: 'Appointments', read: 'TAB_APPOINTMENTS_READ', edit: 'TAB_APPOINTMENTS_EDIT' },
+  { label: 'Staff Management', read: 'TAB_STAFF_READ', edit: 'TAB_STAFF_EDIT' },
+  { label: 'Lab Management', read: 'TAB_LAB_READ', edit: 'TAB_LAB_EDIT' },
+  { label: 'Billing', read: 'TAB_BILLING_READ', edit: 'TAB_BILLING_EDIT' },
+  { label: 'Reports', read: 'TAB_REPORTS_READ', edit: 'TAB_REPORTS_EDIT' },
+] as const;
+
+export type FeaturePermState = Record<string, { read: boolean; edit: boolean }>;
+
+export function emptyFeaturePermissionState(): FeaturePermState {
+  const s: FeaturePermState = {};
+  for (const g of STAFF_FEATURE_GROUPS) {
+    s[g.edit] = { read: false, edit: false };
+  }
+  return s;
+}
+
+export function featureStateFromPermissionNames(names: string[]): FeaturePermState {
+  const set = new Set(names);
+  const s = emptyFeaturePermissionState();
+  for (const g of STAFF_FEATURE_GROUPS) {
+    const hasEdit = set.has(g.edit);
+    const hasRead = set.has(g.read) || hasEdit;
+    s[g.edit] = { read: hasRead, edit: hasEdit };
+  }
+  return s;
+}
+
+export function permissionNamesFromFeatureState(state: FeaturePermState): string[] {
+  const out: string[] = [];
+  for (const g of STAFF_FEATURE_GROUPS) {
+    const cell = state[g.edit];
+    if (!cell) continue;
+    if (cell.edit) out.push(g.edit);
+    else if (cell.read) out.push(g.read);
+  }
+  return out;
+}
+
+/** Human-readable access for the team table — feature name, or "Feature (Read only)" */
+export function formatAccessSummary(permissionNames: string[] | null | undefined): string {
+  if (!permissionNames?.length) return 'No tab access';
+  const set = new Set(permissionNames);
+  const parts: string[] = [];
+  for (const g of STAFF_FEATURE_GROUPS) {
+    const hasEdit = set.has(g.edit);
+    const hasRead = set.has(g.read) || hasEdit;
+    if (!hasRead) continue;
+    parts.push(hasEdit ? g.label : `${g.label} (Read only)`);
+  }
+  return parts.length ? parts.join(' · ') : 'No tab access';
+}
--- a/frontend/src/app/(public)/accept-invite/page.tsx
+++ b/frontend/src/app/(public)/accept-invite/page.tsx
@@ -0,0 +1,166 @@
+'use client';
+
+import { useEffect, useMemo, useState } from 'react';
+import { Suspense } from 'react';
+import Link from 'next/link';
+import { useRouter, useSearchParams } from 'next/navigation';
+import { Button } from '@/components/ui/common/Button';
+import { Input } from '@/components/ui/common/Input';
+import { staffApi } from '@/lib/api/staff';
+
+function AcceptInviteContent() {
+  const params = useSearchParams();
+  const router = useRouter();
+  const token = useMemo(() => params.get('token') || '', [params]);
+
+  const [loading, setLoading] = useState(true);
+  const [submitting, setSubmitting] = useState(false);
+  const [error, setError] = useState('');
+  const [success, setSuccess] = useState('');
+  const [inviteInfo, setInviteInfo] = useState<{
+    email: string;
+    name: string;
+    organizationName: string;
+    expiresAt: string;
+    status: 'PENDING' | 'ACCEPTED';
+  } | null>(null);
+
+  const [name, setName] = useState('');
+  const [password, setPassword] = useState('');
+  const [confirmPassword, setConfirmPassword] = useState('');
+
+  useEffect(() => {
+    if (!token) {
+      setLoading(false);
+      setError('Invalid invitation link');
+      return;
+    }
+
+    void (async () => {
+      setLoading(true);
+      setError('');
+      try {
+        const res = await staffApi.previewInvite(token);
+        setInviteInfo(res.data);
+        setName(res.data.name || '');
+        if (res.data.status === 'ACCEPTED') {
+          setSuccess('This invitation is already accepted. You can log in now.');
+        }
+      } catch (e: any) {
+        setError(e?.message || 'Could not load invitation');
+      } finally {
+        setLoading(false);
+      }
+    })();
+  }, [token]);
+
+  async function onAccept() {
+    if (!token) return;
+    setError('');
+    setSuccess('');
+    if (!name.trim()) {
+      setError('Name is required');
+      return;
+    }
+    if (password.length < 8) {
+      setError('Password must be at least 8 characters');
+      return;
+    }
+    if (password !== confirmPassword) {
+      setError('Passwords do not match');
+      return;
+    }
+
+    setSubmitting(true);
+    try {
+      await staffApi.acceptInvite({
+        token,
+        name: name.trim(),
+        password,
+      });
+      setSuccess('Invitation accepted. Redirecting to login...');
+      setTimeout(() => {
+        router.replace('/login');
+      }, 1000);
+    } catch (e: any) {
+      setError(e?.message || 'Could not accept invitation');
+    } finally {
+      setSubmitting(false);
+    }
+  }
+
+  return (
+    <div className="min-h-screen app-web-bg flex items-center justify-center p-4">
+      <div className="w-full max-w-md surface-card p-6 space-y-5">
+        <h1 className="text-xl font-semibold text-text-primary">Accept invitation</h1>
+
+        {loading ? (
+          <p className="text-sm text-text-secondary">Loading invitation...</p>
+        ) : (
+          <>
+            {inviteInfo && (
+              <div className="rounded-[var(--radius-md)] border border-border/70 bg-background-secondary/70 px-3 py-2 text-sm text-text-secondary space-y-1">
+                <p>
+                  Organization: <span className="text-text-primary">{inviteInfo.organizationName}</span>
+                </p>
+                <p>
+                  Email: <span className="text-text-primary">{inviteInfo.email}</span>
+                </p>
+              </div>
+            )}
+
+            {error && (
+              <div className="rounded-[var(--radius-md)] border border-red-500/40 bg-red-500/10 px-3 py-2 text-sm text-red-300">
+                {error}
+              </div>
+            )}
+            {success && (
+              <div className="rounded-[var(--radius-md)] border border-primary/30 bg-primary-soft/40 px-3 py-2 text-sm text-text-primary">
+                {success}
+              </div>
+            )}
+
+            {inviteInfo?.status !== 'ACCEPTED' && (
+              <div className="space-y-3">
+                <Input label="Name" value={name} onChange={(e) => setName(e.target.value)} />
+                <Input
+                  label="Create password"
+                  type="password"
+                  value={password}
+                  onChange={(e) => setPassword(e.target.value)}
+                />
+                <Input
+                  label="Confirm password"
+                  type="password"
+                  value={confirmPassword}
+                  onChange={(e) => setConfirmPassword(e.target.value)}
+                />
+                <Button type="button" fullWidth isLoading={submitting} onClick={() => void onAccept()}>
+                  Activate account
+                </Button>
+              </div>
+            )}
+
+            <p className="text-xs text-text-muted">
+              Already have access? <Link href="/login" className="text-primary">Go to login</Link>
+            </p>
+          </>
+        )}
+      </div>
+    </div>
+  );
+}
+
+export default function AcceptInvitePage() {
+  return (
+    <Suspense
+      fallback={
+        <div className="min-h-screen app-web-bg flex items-center justify-center">
+          <p className="text-sm text-text-secondary">Loading invitation...</p>
+        </div>
+      }
+    >
+      <AcceptInviteContent />
+    </Suspense>
+  );
+}
--- a/frontend/src/app/(public)/login/page.tsx
+++ b/frontend/src/app/(public)/login/page.tsx
@@ -116,8 +116,8 @@ import Link from 'next/link';
 import { Mail, Lock } from 'lucide-react';

 import { useAuth } from '@/lib/hooks/useAuth';
-import { Button } from '@/components/ui/Button';
-import { Input } from '@/components/ui/Input';
+import { Button } from '@/components/ui/common/Button';
+import { Input } from '@/components/ui/common/Input';

 const loginSchema = z.object({
  email: z.string().email('Please enter a valid email address'),
--- a/frontend/src/app/(public)/page.tsx
+++ b/frontend/src/app/(public)/page.tsx
@@ -2,8 +2,8 @@

 import Link from 'next/link';
 import { useAuth } from '@/lib/hooks/useAuth';
-import { Button } from '@/components/ui/Button';
-import { ThemeToggle } from '@/components/ui/ThemeToggle';
+import { Button } from '@/components/ui/common/Button';
+import { ThemeToggle } from '@/components/ui/common/ThemeToggle';
 import { Building2, Beaker, Calendar, Shield, Clock, Users } from 'lucide-react';

 export default function HomePage() {
--- a/frontend/src/app/(public)/register/page.tsx
+++ b/frontend/src/app/(public)/register/page.tsx
@@ -7,8 +7,8 @@ import * as z from 'zod';
 import Link from 'next/link';
 import { Building2, Mail, Lock, User, ChevronRight } from 'lucide-react';
 import { useAuth } from '@/lib/hooks/useAuth';
-import { Button } from '@/components/ui/Button';
-import { Input } from '@/components/ui/Input';
+import { Button } from '@/components/ui/common/Button';
+import { Input } from '@/components/ui/common/Input';
 const registerSchema = z.object({
    name: z.string().min(2, 'Name must be at least 2 characters'),
    email: z.string().email('Please enter a valid email address'),
--- a/frontend/src/app/(public)/select-organization/page.tsx
+++ b/frontend/src/app/(public)/select-organization/page.tsx
@@ -1,170 +1,12 @@
 'use client';

-import { useState } from 'react';
-import { useAuth } from '@/lib/hooks/useAuth';
-import { Building2, Beaker, Mail, Plus } from 'lucide-react';
-import { Input } from '@/components/ui/Input';
-import { Button } from '@/components/ui/Button';
+import { OrganizationSelectorContent } from '@/components/ui/organization/OrganizationSelectorContent';

 export default function SelectOrganizationPage() {
-  const { organizations, selectOrganization, createOrganization, isLoading, error, clearError } = useAuth();
-  const [isCreateOpen, setIsCreateOpen] = useState(false);
-  const [organizationName, setOrganizationName] = useState('');
-  const [organizationEmail, setOrganizationEmail] = useState('');
-  const [organizationType, setOrganizationType] = useState<'CLINIC' | 'LAB'>('CLINIC');
-
-  const getIcon = (type: string) => {
-    return type === 'CLINIC'
-      ? <Building2 className="h-8 w-8 icon-flat" />
-      : <Beaker className="h-8 w-8 icon-flat" />;
-  };
-
-  const handleCreateOrganization = async () => {
-    try {
-      clearError();
-      const createdId = await createOrganization(
-        organizationName.trim(),
-        organizationEmail.trim(),
-        organizationType,
-      );
-      setOrganizationName('');
-      setOrganizationEmail('');
-      setOrganizationType('CLINIC');
-      setIsCreateOpen(false);
-      await selectOrganization(createdId);
-    } catch {
-      // Error is already handled in auth context.
-    }
-  };
-
-  if (isLoading) {
-    return (
-      <div className="min-h-screen app-web-bg flex items-center justify-center">
-        <p className="text-text-secondary">Loading...</p>
-      </div>
-    );
-  }
-
  return (
    <div className="min-h-screen app-web-bg p-4 sm:p-8">
      <div className="max-w-3xl mx-auto">
-        <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4 mb-8">
-          <div>
-            <h1 className="text-3xl font-semibold text-text-primary">Organizations</h1>
-            <p className="text-text-secondary mt-2">
-              Select an organization to continue, or create a new one.
-            </p>
-          </div>
-          <Button
-            type="button"
-            variant={isCreateOpen ? 'outline' : 'primary'}
-            onClick={() => {
-              clearError();
-              setIsCreateOpen(prev => !prev);
-            }}
-          >
-            <Plus className="h-4 w-4 mr-2 icon-flat" />
-            {isCreateOpen ? 'Cancel' : 'Create Organization'}
-          </Button>
-        </div>
-
-        {isCreateOpen && (
-          <div className="surface-card p-6 mb-6 space-y-4">
-            <Input
-              label="Organization name"
-              value={organizationName}
-              onChange={(event) => setOrganizationName(event.target.value)}
-              placeholder="Sunshine Dental Clinic"
-              icon={<Building2 className="h-5 w-5 icon-flat" />}
-            />
-            <Input
-              label="Organization email"
-              value={organizationEmail}
-              onChange={(event) => setOrganizationEmail(event.target.value)}
-              placeholder="contact@sunshineclinic.com"
-              type="email"
-              icon={<Mail className="h-5 w-5 icon-flat" />}
-            />
-            <div>
-              <label className="block text-sm font-medium text-text-secondary mb-2">
-                Organization type
-              </label>
-              <div className="grid grid-cols-2 gap-3">
-                <button
-                  type="button"
-                  onClick={() => setOrganizationType('CLINIC')}
-                  className={`p-3 border rounded-[var(--radius-md)] text-sm ${
-                    organizationType === 'CLINIC'
-                      ? 'border-primary/60 bg-primary-soft text-text-primary'
-                      : 'border-border text-text-secondary hover:border-border-strong'
-                  }`}
-                >
-                  Dental Clinic
-                </button>
-                <button
-                  type="button"
-                  onClick={() => setOrganizationType('LAB')}
-                  className={`p-3 border rounded-[var(--radius-md)] text-sm ${
-                    organizationType === 'LAB'
-                      ? 'border-primary/60 bg-primary-soft text-text-primary'
-                      : 'border-border text-text-secondary hover:border-border-strong'
-                  }`}
-                >
-                  Dental Lab
-                </button>
-              </div>
-            </div>
-            {error && (
-              <div className="p-3 bg-red-950/30 border border-red-600/40 rounded-[var(--radius-md)]">
-                <p className="text-sm text-red-600">{error}</p>
-              </div>
-            )}
-            <div className="flex justify-end">
-              <Button
-                type="button"
-                variant="primary"
-                onClick={handleCreateOrganization}
-                isLoading={isLoading}
-                disabled={!organizationName.trim() || !organizationEmail.trim()}
-              >
-                Create and Continue
-              </Button>
-            </div>
-          </div>
-        )}
-
-        {!organizations.length ? (
-          <div className="surface-card p-8 text-center">
-            <p className="text-text-secondary">No organizations found. Create your first one to continue.</p>
-          </div>
-        ) : (
-          <div className="grid gap-4">
-            {organizations.map((org) => (
-              <button
-                key={org.id}
-                onClick={() => selectOrganization(org.id)}
-                className="surface-card p-6 transition-all text-left flex items-center gap-4 hover:border-primary/60"
-              >
-                <div className="p-3 bg-primary-soft rounded-[var(--radius-sm)] text-primary">
-                  {getIcon(org.type)}
-                </div>
-
-                <div className="flex-1">
-                  <h3 className="text-lg font-semibold text-text-primary">
-                    {org.name}
-                  </h3>
-                  <p className="text-sm text-text-secondary">
-                    {org.type === 'CLINIC' ? 'Dental Clinic' : 'Dental Lab'}
-                  </p>
-                </div>
-
-                <div className="text-primary text-sm">
-                  Continue →
-                </div>
-              </button>
-            ))}
-          </div>
-        )}
+        <OrganizationSelectorContent />
      </div>
    </div>
  );
--- a/frontend/src/components/ui/common/Badge.tsx
+++ b/frontend/src/components/ui/common/Badge.tsx
--- a/frontend/src/components/ui/common/Button.tsx
+++ b/frontend/src/components/ui/common/Button.tsx
--- a/frontend/src/components/ui/common/Checkbox.tsx
+++ b/frontend/src/components/ui/common/Checkbox.tsx
@@ -0,0 +1,70 @@
+'use client';
+
+import { useId } from 'react';
+import { Check } from 'lucide-react';
+
+type CheckboxProps = {
+  checked: boolean;
+  onChange: (checked: boolean) => void;
+  disabled?: boolean;
+  label: string;
+  id?: string;
+  className?: string;
+};
+
+/**
+ * App design-system checkbox: primary fill when checked, rounded, focus-visible ring.
+ */
+export function Checkbox({
+  checked,
+  onChange,
+  disabled = false,
+  label,
+  id,
+  className = '',
+}: CheckboxProps) {
+  const genId = useId();
+  const inputId = id ?? genId;
+
+  return (
+    <label
+      htmlFor={inputId}
+      className={`
+        inline-flex items-center gap-2.5 cursor-pointer select-none rounded-[var(--radius-sm)] -m-0.5 p-0.5
+        has-[:focus-visible]:ring-2 has-[:focus-visible]:ring-primary/45 has-[:focus-visible]:ring-offset-2
+        has-[:focus-visible]:ring-offset-background-secondary
+        ${disabled ? 'opacity-50 cursor-not-allowed' : ''}
+        ${className}
+      `}
+    >
+      <input
+        id={inputId}
+        type="checkbox"
+        className="sr-only"
+        checked={checked}
+        disabled={disabled}
+        onChange={(e) => onChange(e.target.checked)}
+      />
+      <span
+        className={`
+          flex h-5 w-5 shrink-0 items-center justify-center rounded-[var(--radius-sm)] border-2 transition-all duration-200
+          shadow-[inset_0_1px_0_rgba(255,255,255,0.05)]
+          ${
+            checked
+              ? 'border-primary bg-primary shadow-[0_0_0_1px_rgba(9,169,188,0.25)]'
+              : 'border-border-strong bg-background-card/90 hover:border-border'
+          }
+        `}
+        aria-hidden
+      >
+        <Check
+          strokeWidth={3}
+          className={`h-3.5 w-3.5 text-primary-contrast transition-all duration-200 ${
+            checked ? 'scale-100 opacity-100' : 'scale-75 opacity-0'
+          }`}
+        />
+      </span>
+      <span className="text-sm text-text-secondary">{label}</span>
+    </label>
+  );
+}
--- a/frontend/src/components/ui/common/Input.tsx
+++ b/frontend/src/components/ui/common/Input.tsx
--- a/frontend/src/components/ui/common/OrganizationCard.tsx
+++ b/frontend/src/components/ui/common/OrganizationCard.tsx
@@ -1,7 +1,7 @@
 // src/components/ui/OrganizationCard.tsx
 import React from 'react';
 import { Building2, Beaker, ChevronRight } from 'lucide-react';
-import { Organization } from '@/types';
+import type { Organization } from '@/types/organization';

 interface OrganizationCardProps {
  organization: Organization;
--- a/frontend/src/components/ui/common/Sidebar.tsx
+++ b/frontend/src/components/ui/common/Sidebar.tsx
@@ -1,7 +1,7 @@
 'use client';

 import Link from 'next/link';
-import { memo } from 'react';
+import { memo, useMemo } from 'react';
 import { usePathname } from 'next/navigation';
 import {
  LayoutDashboard,
@@ -12,19 +12,27 @@ import {
  FileText,
  CreditCard,
 } from 'lucide-react';
+import { useAuth } from '@/lib/hooks/useAuth';
+import { canViewTab } from '@/shared/permissions';

 const menu = [
-  { name: 'Today', path: '/today', icon: LayoutDashboard },
-  { name: 'Patients', path: '/patients', icon: Users },
-  { name: 'Appointments', path: '/appointments', icon: Calendar },
-  { name: 'Staff Management', path: '/staff', icon: UserCog },
-  { name: 'Lab Management', path: '/lab', icon: FlaskConical },
-  { name: 'Billing', path: '/billing', icon: CreditCard },
-  { name: 'Reports', path: '/reports', icon: FileText },
+  { name: 'Today', path: '/today', icon: LayoutDashboard, read: 'TAB_TODAY_READ' as const },
+  { name: 'Patients', path: '/patients', icon: Users, read: 'TAB_PATIENTS_READ' as const },
+  { name: 'Appointments', path: '/appointments', icon: Calendar, read: 'TAB_APPOINTMENTS_READ' as const },
+  { name: 'Staff Management', path: '/staff', icon: UserCog, read: 'TAB_STAFF_READ' as const },
+  { name: 'Lab Management', path: '/lab', icon: FlaskConical, read: 'TAB_LAB_READ' as const },
+  { name: 'Billing', path: '/billing', icon: CreditCard, read: 'TAB_BILLING_READ' as const },
+  { name: 'Reports', path: '/reports', icon: FileText, read: 'TAB_REPORTS_READ' as const },
 ];

 function Sidebar() {
  const pathname = usePathname();
+  const { currentOrganization } = useAuth();
+
+  const visibleMenu = useMemo(
+    () => menu.filter((item) => canViewTab(currentOrganization, item.read)),
+    [currentOrganization],
+  );

  return (
    <aside className="w-64 bg-background-secondary/90 border-r border-border text-text-primary flex flex-col">
@@ -34,7 +42,7 @@ function Sidebar() {
      <div className="mx-4 border-b border-border/70" />

      <nav className="flex flex-col gap-2 p-4">
-        {menu.map((item) => {
+        {visibleMenu.map((item) => {
          const Icon = item.icon;
          const isActive = pathname === item.path;

--- a/frontend/src/components/ui/common/ThemeToggle.tsx
+++ b/frontend/src/components/ui/common/ThemeToggle.tsx
--- a/frontend/src/components/ui/dashboard/DashboardAccountMenu.tsx
+++ b/frontend/src/components/ui/dashboard/DashboardAccountMenu.tsx
@@ -13,7 +13,7 @@ import {
 } from 'lucide-react';
 import { useAuth } from '@/lib/hooks/useAuth';
 import { authApi } from '@/lib/api/auth';
-import type { SubscriptionAlertData } from '@/types';
+import type { SubscriptionAlertData } from '@/types/subscription';

 function warningTooltip(data: SubscriptionAlertData | null): string {
  if (!data?.showWarning) return '';
@@ -68,7 +68,7 @@ export function DashboardAccountMenu() {
  }, [logout]);

  return (
-    <div className="relative" ref={menuRef}>
+    <div className="relative z-[120]" ref={menuRef}>
      <button
        type="button"
        onClick={() => setOpen((v) => !v)}
@@ -94,7 +94,7 @@ export function DashboardAccountMenu() {
      {open && (
        <div
          role="menu"
-          className="absolute right-0 mt-2 w-72 rounded-[var(--radius-md)] border border-border bg-background-secondary/95 py-2 shadow-lg z-50 backdrop-blur-sm"
+          className="absolute right-0 mt-2 w-72 rounded-[var(--radius-md)] border border-border bg-background-secondary/95 py-2 shadow-lg z-[200] backdrop-blur-sm"
        >
          <div className="px-3 py-2 border-b border-border/60">
            <p className="text-xs text-text-muted">Signed in</p>
@@ -106,7 +106,7 @@ export function DashboardAccountMenu() {

          <div className="py-1">
            <Link
-              href="/select-organization"
+              href="/settings/organizations"
              role="menuitem"
              className="flex items-center gap-3 px-3 py-2.5 text-sm text-text-primary hover:bg-background-card/70"
              onClick={() => setOpen(false)}
--- a/frontend/src/components/ui/organization/OrganizationSelectorContent.tsx
+++ b/frontend/src/components/ui/organization/OrganizationSelectorContent.tsx
@@ -0,0 +1,162 @@
+'use client';
+
+import { useState } from 'react';
+import { useAuth } from '@/lib/hooks/useAuth';
+import { Building2, Beaker, Mail, Plus } from 'lucide-react';
+import { Input } from '@/components/ui/common/Input';
+import { Button } from '@/components/ui/common/Button';
+
+export function OrganizationSelectorContent() {
+  const { organizations, selectOrganization, createOrganization, isLoading, error, clearError } = useAuth();
+  const [isCreateOpen, setIsCreateOpen] = useState(false);
+  const [organizationName, setOrganizationName] = useState('');
+  const [organizationEmail, setOrganizationEmail] = useState('');
+  const [organizationType, setOrganizationType] = useState<'CLINIC' | 'LAB'>('CLINIC');
+
+  const getIcon = (type: string) =>
+    type === 'CLINIC' ? <Building2 className="h-8 w-8 icon-flat" /> : <Beaker className="h-8 w-8 icon-flat" />;
+
+  const handleCreateOrganization = async () => {
+    try {
+      clearError();
+      const createdId = await createOrganization(
+        organizationName.trim(),
+        organizationEmail.trim(),
+        organizationType,
+      );
+      setOrganizationName('');
+      setOrganizationEmail('');
+      setOrganizationType('CLINIC');
+      setIsCreateOpen(false);
+      await selectOrganization(createdId);
+    } catch {
+      // handled by auth context
+    }
+  };
+
+  if (isLoading) {
+    return <p className="text-text-secondary">Loading...</p>;
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
+        <div>
+          <h1 className="text-3xl font-semibold text-text-primary">Organizations</h1>
+          <p className="text-text-secondary mt-2">
+            Select an organization to continue, or create a new one.
+          </p>
+        </div>
+        <Button
+          type="button"
+          variant={isCreateOpen ? 'outline' : 'primary'}
+          onClick={() => {
+            clearError();
+            setIsCreateOpen((prev) => !prev);
+          }}
+        >
+          <Plus className="h-4 w-4 mr-2 icon-flat" />
+          {isCreateOpen ? 'Cancel' : 'Create Organization'}
+        </Button>
+      </div>
+
+      {isCreateOpen && (
+        <div className="surface-card p-6 space-y-4">
+          <Input
+            label="Organization name"
+            value={organizationName}
+            onChange={(event) => setOrganizationName(event.target.value)}
+            placeholder="Sunshine Dental Clinic"
+            icon={<Building2 className="h-5 w-5 icon-flat" />}
+          />
+          <Input
+            label="Organization email"
+            value={organizationEmail}
+            onChange={(event) => setOrganizationEmail(event.target.value)}
+            placeholder="contact@sunshineclinic.com"
+            type="email"
+            icon={<Mail className="h-5 w-5 icon-flat" />}
+          />
+          <div>
+            <label className="block text-sm font-medium text-text-secondary mb-2">
+              Organization type
+            </label>
+            <div className="grid grid-cols-2 gap-3">
+              <button
+                type="button"
+                onClick={() => setOrganizationType('CLINIC')}
+                className={`p-3 border rounded-[var(--radius-md)] text-sm ${
+                  organizationType === 'CLINIC'
+                    ? 'border-primary/60 bg-primary-soft text-text-primary'
+                    : 'border-border text-text-secondary hover:border-border-strong'
+                }`}
+              >
+                Dental Clinic
+              </button>
+              <button
+                type="button"
+                onClick={() => setOrganizationType('LAB')}
+                className={`p-3 border rounded-[var(--radius-md)] text-sm ${
+                  organizationType === 'LAB'
+                    ? 'border-primary/60 bg-primary-soft text-text-primary'
+                    : 'border-border text-text-secondary hover:border-border-strong'
+                }`}
+              >
+                Dental Lab
+              </button>
+            </div>
+          </div>
+          {error && (
+            <div className="p-3 bg-red-950/30 border border-red-600/40 rounded-[var(--radius-md)]">
+              <p className="text-sm text-red-600">{error}</p>
+            </div>
+          )}
+          <div className="flex justify-end">
+            <Button
+              type="button"
+              variant="primary"
+              onClick={handleCreateOrganization}
+              isLoading={isLoading}
+              disabled={!organizationName.trim() || !organizationEmail.trim()}
+            >
+              Create and Continue
+            </Button>
+          </div>
+        </div>
+      )}
+
+      {!organizations.length ? (
+        <div className="surface-card p-8 text-center">
+          <p className="text-text-secondary">No organizations found. Create your first one to continue.</p>
+        </div>
+      ) : (
+        <div className="grid gap-4">
+          {organizations.map((org) => (
+            <button
+              key={org.id}
+              onClick={() => selectOrganization(org.id)}
+              className="surface-card p-6 transition-all text-left flex items-center gap-4 hover:border-primary/60"
+            >
+              <div className="p-3 bg-primary-soft rounded-[var(--radius-sm)] text-primary">
+                {getIcon(org.type)}
+              </div>
+
+              <div className="flex-1">
+                <h3 className="text-lg font-semibold text-text-primary">
+                  {org.name}
+                </h3>
+                <p className="text-sm text-text-secondary">
+                  {org.type === 'CLINIC' ? 'Dental Clinic' : 'Dental Lab'}
+                </p>
+              </div>
+
+              <div className="text-primary text-sm">
+                Continue →
+              </div>
+            </button>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
--- a/frontend/src/components/ui/patient/CreatePatientModal.tsx
+++ b/frontend/src/components/ui/patient/CreatePatientModal.tsx
@@ -1,7 +1,7 @@
 'use client';

-import { Button } from '@/components/ui/Button';
-import { Input } from '@/components/ui/Input';
+import { Button } from '@/components/ui/common/Button';
+import { Input } from '@/components/ui/common/Input';
 import { CreatePatientInput } from '@/types/patient';

 interface CreatePatientModalProps {
--- a/frontend/src/components/ui/patient/PatientSearchSelect.tsx
+++ b/frontend/src/components/ui/patient/PatientSearchSelect.tsx
@@ -1,7 +1,7 @@
 'use client';

 import { Search } from 'lucide-react';
-import { Input } from '@/components/ui/Input';
+import { Input } from '@/components/ui/common/Input';
 import { Patient } from '@/types/patient';

 interface PatientSearchSelectProps {
--- a/frontend/src/components/ui/patient/PatientSummaryCard.tsx
+++ b/frontend/src/components/ui/patient/PatientSummaryCard.tsx
--- a/frontend/src/components/ui/patient/TreatmentHistoryPreview.tsx
+++ b/frontend/src/components/ui/patient/TreatmentHistoryPreview.tsx
--- a/frontend/src/lib/api/auth.ts
+++ b/frontend/src/lib/api/auth.ts
@@ -1,6 +1,7 @@
 // src/lib/api/auth.ts
 import { apiClient } from './client';
-import { AuthResponse, TrialRegistrationData, LoginData, SubscriptionAlertData } from '@/types';
+import type { AuthResponse, TrialRegistrationData, LoginData } from '@/types/auth';
+import type { SubscriptionAlertData } from '@/types/subscription';

 export const authApi = {
  // Register a new trial organization
--- a/frontend/src/lib/api/client.ts
+++ b/frontend/src/lib/api/client.ts
@@ -1,6 +1,6 @@
 // src/lib/api/client.ts
 import axios, { AxiosError, InternalAxiosRequestConfig } from 'axios';
-import { ApiError } from '@/types';
+import type { ApiError } from '@/types/api';

 interface CustomAxiosRequestConfig extends InternalAxiosRequestConfig {
  _retry?: boolean;
--- a/frontend/src/lib/api/staff.ts
+++ b/frontend/src/lib/api/staff.ts
@@ -0,0 +1,94 @@
+import { apiClient } from './client';
+
+export interface StaffMemberDto {
+  id: string;
+  userId: string;
+  email: string;
+  name: string;
+  isOwner: boolean;
+  isActive: boolean;
+  invitationStatus: 'ACTIVE' | 'PENDING' | 'EXPIRED';
+  invitedAt: string | null;
+  acceptedAt: string | null;
+  permissions: string[] | null;
+}
+
+export interface StaffListResponse {
+  success: boolean;
+  data: {
+    members: StaffMemberDto[];
+    seats: {
+      used: number;
+      limit: number | null;
+      unlimited: boolean;
+    };
+  };
+}
+
+export interface InviteStaffResponse {
+  success: boolean;
+  data: {
+    membershipId: string;
+    userId: string;
+    email: string;
+    invitationId: string | null;
+    invitationUrl: string | null;
+    invitationStatus: 'PENDING' | 'ACCEPTED';
+  };
+}
+
+export interface PreviewInviteResponse {
+  success: boolean;
+  data: {
+    email: string;
+    name: string;
+    organizationName: string;
+    expiresAt: string;
+    status: 'PENDING' | 'ACCEPTED';
+  };
+}
+
+export const staffApi = {
+  list: async (): Promise<StaffListResponse> => {
+    const response = await apiClient.get('/staff');
+    return response.data;
+  },
+
+  invite: async (body: {
+    email: string;
+    name: string;
+    permissionNames: string[];
+  }): Promise<InviteStaffResponse> => {
+    const response = await apiClient.post('/staff/invite', body);
+    return response.data;
+  },
+
+  previewInvite: async (token: string): Promise<PreviewInviteResponse> => {
+    const response = await apiClient.get(`/staff/invitations/preview?token=${encodeURIComponent(token)}`);
+    return response.data;
+  },
+
+  acceptInvite: async (body: {
+    token: string;
+    password: string;
+    name: string;
+  }): Promise<{ success: boolean; message: string; data: { email: string } }> => {
+    const response = await apiClient.post('/staff/invitations/accept', body);
+    return response.data;
+  },
+
+  updateMember: async (
+    membershipId: string,
+    body: { name?: string; permissionNames?: string[] },
+  ): Promise<{ success: boolean; message: string }> => {
+    const response = await apiClient.patch(`/staff/members/${membershipId}`, body);
+    return response.data;
+  },
+
+  removeMember: async (
+    membershipId: string,
+  ): Promise<{ success: boolean; message: string }> => {
+    const response = await apiClient.delete(`/staff/members/${membershipId}`);
+    return response.data;
+  },
+};
--- a/frontend/src/lib/hooks/useAuth.tsx
+++ b/frontend/src/lib/hooks/useAuth.tsx
@@ -3,7 +3,7 @@
 import React, { createContext, useCallback, useContext, useEffect, useMemo, useState } from 'react';
 import { useRouter } from 'next/navigation';
 import { authApi } from '@/lib/api/auth';
-import { User, Organization } from '@/types';
+import { User, Organization } from '@/types/organization';

 interface AuthContextType {
  user: User | null;
@@ -223,6 +223,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
        name: organization.name,
        type: organization.type as Organization['type'],
        isOwner: Boolean((organization as { isOwner?: boolean }).isOwner),
+        permissions: (organization as { permissions?: string[] }).permissions,
        plan: (organization as { plan?: Organization['plan'] }).plan,
      });

--- a/frontend/src/middleware.ts
+++ b/frontend/src/middleware.ts
@@ -1,29 +1,22 @@
-
 import { NextResponse } from 'next/server';
 import type { NextRequest } from 'next/server';

 const publicRoutes = ['/', '/login', '/register', '/terms', '/privacy', '/forgot-password'];

-export function middleware(request: NextRequest) {
+export function proxy(request: NextRequest) {
  const { pathname } = request.nextUrl;
  const token = request.cookies.get('accessToken')?.value;
  const isAuthenticated = !!token;

-  // If a logged-in user opens home, send them to dashboard.
  if (isAuthenticated && pathname === '/') {
    return NextResponse.redirect(new URL('/today', request.url));
  }

-  // Always allow public routes first. We intentionally do not block /login or /register
-  // when a cookie exists, because the cookie might be stale/invalid and the client
-  // auth check needs to recover gracefully.
  if (publicRoutes.includes(pathname)) {
    return NextResponse.next();
  }

-  // Protected routes: redirect to login if no token
  if (!isAuthenticated) {
-    // Prevent loop: if somehow redirecting to login from login, just continue
    if (pathname === '/login') {
      return NextResponse.next();
    }
--- a/frontend/src/shared/permissions.ts
+++ b/frontend/src/shared/permissions.ts
@@ -0,0 +1,51 @@
+import type { Organization } from '@/types/organization';
+
+const ROUTE_TAB_READ: { prefix: string; permission: string }[] = [
+  { prefix: '/today', permission: 'TAB_TODAY_READ' },
+  { prefix: '/patients', permission: 'TAB_PATIENTS_READ' },
+  { prefix: '/appointments', permission: 'TAB_APPOINTMENTS_READ' },
+  { prefix: '/staff', permission: 'TAB_STAFF_READ' },
+  { prefix: '/lab', permission: 'TAB_LAB_READ' },
+  { prefix: '/billing', permission: 'TAB_BILLING_READ' },
+  { prefix: '/reports', permission: 'TAB_REPORTS_READ' },
+];
+
+export function hasPermission(org: Organization | null, permission: string): boolean {
+  if (!org) return false;
+  if (org.isOwner) return true;
+  return Boolean(org.permissions?.includes(permission));
+}
+
+/** Sidebar / route guard: READ access to a tab */
+export function canViewTab(org: Organization | null, readPermission: string): boolean {
+  return hasPermission(org, readPermission);
+}
+
+export function getRequiredReadPermissionForPath(pathname: string): string | null {
+  for (const { prefix, permission } of ROUTE_TAB_READ) {
+    if (pathname === prefix || pathname.startsWith(`${prefix}/`)) {
+      return permission;
+    }
+  }
+  return null;
+}
+
+/** First dashboard route the user may open (ordered). Fallback: account settings. */
+export function firstAccessibleDashboardPath(org: Organization | null): string {
+  if (!org) return '/today';
+  if (org.isOwner) return '/today';
+  for (const { prefix, permission } of ROUTE_TAB_READ) {
+    if (hasPermission(org, permission)) return prefix;
+  }
+  return '/settings/account';
+}
+
+export function canEditStaff(org: Organization | null): boolean {
+  return hasPermission(org, 'TAB_STAFF_EDIT');
+}
+
+export function canViewStaff(org: Organization | null): boolean {
+  return (
+    hasPermission(org, 'TAB_STAFF_READ') || hasPermission(org, 'TAB_STAFF_EDIT')
+  );
+}
--- a/frontend/src/types/api.ts
+++ b/frontend/src/types/api.ts
@@ -0,0 +1,5 @@
+export interface ApiError {
+  statusCode: number;
+  message: string | string[];
+  error?: string;
+}
--- a/frontend/src/types/auth.ts
+++ b/frontend/src/types/auth.ts
@@ -0,0 +1,25 @@
+import type { Organization, User } from './organization';
+
+export interface AuthResponse {
+  success: boolean;
+  data: {
+    accessToken: string;
+    refreshToken: string;
+    user: User;
+    organizations: Organization[];
+  };
+}
+
+export interface TrialRegistrationData {
+  email: string;
+  password: string;
+  name: string;
+  organizationName: string;
+  organizationEmail: string;
+  organizationType: 'CLINIC' | 'LAB';
+}
+
+export interface LoginData {
+  email: string;
+  password: string;
+}
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -1,60 +1,5 @@
-// src/types/index.ts
-export interface User {
-  id: string;
-  email: string;
-  name: string;
-}
-
-export interface Organization {
-  id: string;
-  name: string;
-  type: 'CLINIC' | 'LAB';
-  isOwner: boolean;
-  permissions?: string[];
-  plan?: {
-    name: string;
-    maxUsers: number;
-  };
-}
-
-/** GET /auth/subscription-alert — owners only get meaningful flags */
-export interface SubscriptionAlertData {
-  showWarning: boolean;
-  seatsLow: boolean;
-  trialEndingSoon: boolean;
-  trialExpired: boolean;
-  seatsUsed?: number;
-  seatsLimit?: number;
-  daysUntilTrialEnd?: number | null;
-  trialEndsAt?: string | null;
-}
-
-export interface AuthResponse {
-  success: boolean;
-  data: {
-    accessToken: string;
-    refreshToken: string;
-    user: User;
-    organizations: Organization[];
-  };
-}
-
-export interface TrialRegistrationData {
-  email: string;
-  password: string;
-  name: string;
-  organizationName: string;
-  organizationEmail: string;
-  organizationType: 'CLINIC' | 'LAB';
-}
-
-export interface LoginData {
-  email: string;
-  password: string;
-}
-
-export interface ApiError {
-  statusCode: number;
-  message: string | string[];
-  error?: string;
-}
+export * from './organization';
+export * from './subscription';
+export * from './auth';
+export * from './api';
+export * from './patient';
--- a/frontend/src/types/organization.ts
+++ b/frontend/src/types/organization.ts
@@ -0,0 +1,20 @@
+export interface User {
+  id: string;
+  email: string;
+  name: string;
+}
+
+export interface OrganizationPlan {
+  name: string;
+  maxUsers: number;
+  price?: number;
+}
+
+export interface Organization {
+  id: string;
+  name: string;
+  type: 'CLINIC' | 'LAB';
+  isOwner: boolean;
+  permissions?: string[];
+  plan?: OrganizationPlan;
+}
--- a/frontend/src/types/subscription.ts
+++ b/frontend/src/types/subscription.ts
@@ -0,0 +1,13 @@
+/** GET /auth/subscription-alert — owners only get meaningful flags */
+export interface SubscriptionAlertData {
+  showWarning: boolean;
+  seatsLow: boolean;
+  trialEndingSoon: boolean;
+  trialExpired: boolean;
+  seatsUsed?: number;
+  seatsLimit?: number;
+  daysUntilTrialEnd?: number | null;
+  trialEndsAt?: string | null;
+  daysUntilPlanEnd?: number | null;
+  planEndsAt?: string | null;
+}