# L0 — Foundation (Competing Plan — Claude Code)

**Duration:** Days 6–9 (4 days)
**Parallelism:** None — sequential foundation; everything depends on this
**References:** `07-DATABASE-SCHEMA.md`, `10-AUTH-AND-PERMISSIONS.md`, `11-REALTIME-AND-BACKGROUND-JOBS.md`, `14-TECHNICAL-DECISIONS.md`, `15-DESIGN-TOKENS.md`, `SECURITY-GUIDELINES.md`

---

## 1. Baseline Critique

### What the baseline gets right

- **Step ordering is sound.** Scaffold → Docker → DB → Auth → Infra → Layout → Security is the correct dependency chain.
- **Drizzle schema grouping** (1 file per domain) is practical and matches the project scale.
- **Docker multi-stage build** with standalone output is correct for production.
- **Nginx security headers and rate limiting zones** are thorough and match `SECURITY-GUIDELINES.md`.
- **Acceptance criteria** are concrete and testable.

### What's missing or wrong

1. **Route structure is wrong.** The baseline uses `(crm)/` as the route group. The locked file organization in `PROMPT-CLAUDE-CODE.md` specifies `(dashboard)/[portSlug]/` with a dynamic port slug segment. This is a fundamental routing decision — every page URL, every link, every breadcrumb depends on it. Getting this wrong means rework across every layer.

2. **Session storage contradicts `14-TECHNICAL-DECISIONS.md`.** The baseline stores sessions in PostgreSQL. The locked tech decisions say `better-auth/plugins/redis` for session persistence. Redis sessions are faster and reduce DB load for the most frequent operation in the system (session validation on every request).

3. **BullMQ queue names don't match the spec.** The baseline invents names like `notification-processing`, `email-sync`, `email-send`. The spec in `11-REALTIME-AND-BACKGROUND-JOBS.md` defines exactly 10 queues: `email`, `documents`, `notifications`, `import`, `export`, `reports`, `webhooks`, `maintenance`, `ai`, `bulk`. Use the spec names.

4. **Role count mismatch.** The baseline seeds 4 roles (`super_admin`, `director`, `sales`, `readonly`). The spec in `10-AUTH-AND-PERMISSIONS.md` Section 2.4 defines 5 system roles: `super_admin`, `director`, `sales_manager`, `sales_agent`, `viewer`. All 5 must be seeded.

5. **Missing environment variables.** The `.env.example` omits `CSRF_SECRET`, `EMAIL_CREDENTIAL_KEY`, `DOCUMENSO_WEBHOOK_SECRET`, `GOOGLE_CLIENT_ID`, `GOOGLE_CLIENT_SECRET`, `PUBLIC_SITE_URL` — all required by `SECURITY-GUIDELINES.md`.

6. **Socket.io + Next.js integration is hand-waved.** "Create Socket.io server alongside Next.js custom server" is not a plan. Next.js standalone mode runs `node server.js` with no extension point for WebSocket servers. This needs a custom `server.ts` entry point that boots both Next.js and Socket.io, or a separate worker process. The approach must be specified.

7. **No Drizzle relations defined.** Schemas without `relations()` declarations mean no relational query builder (`db.query.*.findFirst({ with: ... })`). The auth middleware pseudocode in the baseline itself uses `with: { role: true }` — this requires relation definitions.

8. **No application-level rate limiting.** The baseline only has nginx rate limiting. `SECURITY-GUIDELINES.md` Section 6.1 requires Redis sliding window rate limiting at the application layer with `X-RateLimit-*` response headers.

9. **No `pgcrypto` extension.** Security guidelines require AES-256-GCM encryption for email credentials and pgcrypto for Google Calendar tokens. The database init must enable this extension.

10. **No env validation.** No Zod schema validating that all required environment variables are present and well-formed at startup. The app should fail fast with a clear error, not crash mid-request when `process.env.DATABASE_URL` is undefined.

11. **No custom server entry point.** BullMQ workers need a long-running process. Next.js standalone `server.js` doesn't run background workers. Need either a custom server wrapper or a separate worker process in Docker Compose.

12. **Missing `lint-staged`.** Pre-commit hook runs ESLint on the entire project. With `lint-staged` + `husky`, only staged files are linted — dramatically faster as the project grows.

13. **No health check endpoints.** Docker Compose health checks need an HTTP endpoint. The baseline's postgres and redis have health checks, but `crm-app` has none.

14. **`next.config.ts` incomplete.** Needs `serverExternalPackages` for `pino`, `bullmq`, `ioredis`, `minio`, `postgres` — these packages use native Node.js APIs that Next.js's bundler will break if it tries to bundle them.

### What I'd change structurally

- **Split the custom server concern early.** Define a `server.ts` that boots Next.js + Socket.io + BullMQ workers together in development, and use separate Docker Compose services for `crm-app` (Next.js) and `crm-worker` (BullMQ) in production.
- **Define Zod env schema as the very first file.** Every other module imports validated config from it.
- **Port slug in URLs from Day 1.** `/(dashboard)/[portSlug]/clients` not `/(crm)/clients`. This avoids a painful routing migration later.
- **Add a `lib/api/helpers.ts` pattern** for API route handlers — a composable middleware chain (`withAuth → withPort → withPermission → handler`) rather than ad-hoc checks in each route.

---

## 2. Implementation Plan

### Day 1 — Scaffold + Docker + Database Schema

#### Morning: Project Init (2 hours)

**Step 1: Create Next.js project**

```bash
pnpm create next-app@latest port-nimara-crm \
  --typescript --tailwind --eslint --app \
  --src-dir --import-alias "@/*" \
  --use-pnpm
```

**Step 2: Environment validation**

**File:** `src/lib/env.ts`

```typescript
import { z } from 'zod';

const envSchema = z.object({
  // Database
  DATABASE_URL: z.string().url().startsWith('postgresql://'),

  // Redis
  REDIS_URL: z.string().url().startsWith('redis://'),

  // Auth
  BETTER_AUTH_SECRET: z.string().min(32),
  BETTER_AUTH_URL: z.string().url(),
  CSRF_SECRET: z.string().min(32),

  // MinIO
  MINIO_ENDPOINT: z.string().min(1),
  MINIO_PORT: z.coerce.number().int().positive(),
  MINIO_ACCESS_KEY: z.string().min(1),
  MINIO_SECRET_KEY: z.string().min(1),
  MINIO_BUCKET: z.string().min(1),
  MINIO_USE_SSL: z.enum(['true', 'false']).transform((v) => v === 'true'),

  // Documenso
  DOCUMENSO_API_URL: z.string().url(),
  DOCUMENSO_API_KEY: z.string().min(1),
  DOCUMENSO_WEBHOOK_SECRET: z.string().min(16),

  // Email
  SMTP_HOST: z.string().min(1),
  SMTP_PORT: z.coerce.number().int().positive(),

  // Encryption
  EMAIL_CREDENTIAL_KEY: z
    .string()
    .length(64)
    .regex(/^[0-9a-f]+$/i, 'Must be 64-char hex'),

  // Google OAuth
  GOOGLE_CLIENT_ID: z.string().optional(),
  GOOGLE_CLIENT_SECRET: z.string().optional(),

  // OpenAI
  OPENAI_API_KEY: z.string().optional(),

  // App
  APP_URL: z.string().url(),
  PUBLIC_SITE_URL: z.string().url(),
  NODE_ENV: z.enum(['development', 'production', 'test']).default('development'),
  LOG_LEVEL: z.enum(['fatal', 'error', 'warn', 'info', 'debug', 'trace']).default('info'),
});

export type Env = z.infer<typeof envSchema>;

function validateEnv(): Env {
  const result = envSchema.safeParse(process.env);
  if (!result.success) {
    console.error('❌ Invalid environment variables:');
    for (const issue of result.error.issues) {
      console.error(`  ${issue.path.join('.')}: ${issue.message}`);
    }
    process.exit(1);
  }
  return result.data;
}

export const env = validateEnv();
```

**Step 3: TypeScript strict config**

**File:** `tsconfig.json`

```json
{
  "compilerOptions": {
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,
    "target": "ES2022",
    "lib": ["dom", "dom.iterable", "ES2022"],
    "module": "esnext",
    "moduleResolution": "bundler",
    "jsx": "preserve",
    "incremental": true,
    "plugins": [{ "name": "next" }],
    "paths": { "@/*": ["./src/*"] },
    "skipLibCheck": true
  },
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
  "exclude": ["node_modules"]
}
```

**Step 4: ESLint + Prettier + lint-staged**

```bash
pnpm add -D prettier eslint-config-prettier lint-staged
```

**File:** `.eslintrc.json`

```json
{
  "extends": ["next/core-web-vitals", "next/typescript", "prettier"],
  "rules": {
    "@typescript-eslint/no-explicit-any": "error",
    "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
    "import/order": [
      "warn",
      {
        "groups": ["builtin", "external", "internal", "parent", "sibling"],
        "newlines-between": "always",
        "alphabetize": { "order": "asc" }
      }
    ]
  }
}
```

**File:** `.prettierrc`

```json
{
  "semi": true,
  "singleQuote": true,
  "trailingComma": "all",
  "tabWidth": 2,
  "printWidth": 100
}
```

**File:** `.lintstagedrc.json`

```json
{
  "*.{ts,tsx}": ["eslint --fix", "prettier --write"],
  "*.{json,md,css}": ["prettier --write"]
}
```

**Step 5: Git setup**

**File:** `.gitignore`

```
node_modules/
.next/
.env
.env.local
.env.production
*.pem
*.key
drizzle/*.sql
coverage/
.turbo/
```

**File:** `.env.example` — all variables from `src/lib/env.ts` schema with placeholder values (no real secrets).

```bash
pnpm add -D husky
pnpm exec husky init
```

**File:** `.husky/pre-commit`

```bash
#!/bin/sh
pnpm exec lint-staged
# Verify no .env files staged
if git diff --cached --name-only | grep -qE '\.env($|\.)'; then
  echo "❌ .env files must not be committed"
  exit 1
fi
# Scan for potential secrets
if git diff --cached -U0 | grep -qiE '(password|secret|api_key|access_key)\s*[:=]\s*["\x27][A-Za-z0-9+/=]{16,}'; then
  echo "⚠️  Possible hardcoded secret detected. Review staged changes."
  exit 1
fi
```

**Step 6: Directory structure**

Create all directories per the locked file organization in `PROMPT-CLAUDE-CODE.md`. Key difference from baseline: `(dashboard)/[portSlug]/` not `(crm)/`.

```
src/
├── app/
│   ├── (auth)/
│   │   ├── login/
│   │   ├── set-password/
│   │   └── reset-password/
│   ├── (dashboard)/
│   │   ├── [portSlug]/
│   │   │   ├── clients/
│   │   │   ├── interests/
│   │   │   ├── berths/
│   │   │   ├── expenses/
│   │   │   ├── invoices/
│   │   │   ├── email/
│   │   │   ├── reminders/
│   │   │   ├── documents/
│   │   │   ├── reports/
│   │   │   ├── settings/
│   │   │   └── admin/
│   │   │       ├── users/
│   │   │       ├── roles/
│   │   │       ├── ports/
│   │   │       ├── settings/
│   │   │       ├── audit/
│   │   │       ├── webhooks/
│   │   │       ├── reports/
│   │   │       ├── templates/
│   │   │       ├── forms/
│   │   │       ├── tags/
│   │   │       ├── import/
│   │   │       ├── monitoring/
│   │   │       ├── backup/
│   │   │       ├── custom-fields/
│   │   │       └── onboarding/
│   │   └── layout.tsx
│   ├── api/
│   │   ├── auth/[...all]/
│   │   ├── health/
│   │   ├── v1/
│   │   │   ├── clients/
│   │   │   ├── interests/
│   │   │   ├── berths/
│   │   │   ├── expenses/
│   │   │   ├── invoices/
│   │   │   ├── files/
│   │   │   ├── email/
│   │   │   ├── reminders/
│   │   │   ├── documents/
│   │   │   ├── reports/
│   │   │   ├── notifications/
│   │   │   ├── calendar/
│   │   │   ├── admin/
│   │   │   └── search/
│   │   ├── public/
│   │   └── webhooks/
│   ├── layout.tsx
│   └── not-found.tsx
├── components/
│   ├── ui/                    # shadcn/ui
│   ├── layout/                # Sidebar, Topbar, PortSwitcher, Breadcrumbs
│   ├── shared/                # Reusable composed components
│   └── [domain]/              # Per-domain (clients/, interests/, berths/, etc.)
├── lib/
│   ├── db/
│   │   ├── index.ts           # Drizzle client
│   │   ├── schema/            # 1 file per domain + relations
│   │   │   ├── index.ts
│   │   │   ├── ports.ts
│   │   │   ├── users.ts
│   │   │   ├── clients.ts
│   │   │   ├── interests.ts
│   │   │   ├── berths.ts
│   │   │   ├── documents.ts
│   │   │   ├── financial.ts
│   │   │   ├── email.ts
│   │   │   ├── operations.ts
│   │   │   ├── system.ts
│   │   │   └── relations.ts   # ← NEW: all relations() in one file
│   │   ├── migrations/
│   │   └── seed.ts
│   ├── auth/
│   │   ├── index.ts           # Better Auth server
│   │   ├── client.ts          # Better Auth React hooks
│   │   └── permissions.ts     # Permission check helpers
│   ├── api/
│   │   └── helpers.ts         # ← NEW: withAuth/withPort/withPermission composable chain
│   ├── services/              # Business logic (1 file per domain, added in L1+)
│   ├── validators/            # Zod schemas (1 file per domain, added in L1+)
│   ├── queue/
│   │   ├── index.ts           # Queue definitions (10 queues matching spec)
│   │   ├── scheduler.ts       # Recurring job registration
│   │   └── workers/           # Worker processors (stubs)
│   ├── socket/
│   │   ├── server.ts          # Socket.io setup
│   │   ├── events.ts          # Event type definitions
│   │   └── rooms.ts           # Room join/leave logic
│   ├── minio/
│   │   └── index.ts
│   ├── email/
│   │   └── index.ts           # Nodemailer transporter factory
│   ├── redis.ts
│   ├── rate-limit.ts          # ← NEW: Redis sliding window rate limiter
│   ├── logger.ts
│   ├── errors.ts
│   ├── constants.ts
│   ├── audit.ts               # ← NEW: dedicated audit log module
│   ├── env.ts
│   └── utils.ts
├── hooks/
│   ├── use-auth.ts
│   ├── use-port.ts
│   ├── use-socket.ts
│   └── use-permissions.ts
├── providers/
│   ├── query-provider.tsx
│   ├── socket-provider.tsx
│   └── port-provider.tsx
├── stores/
│   └── ui-store.ts
├── types/
│   ├── api.ts
│   ├── auth.ts
│   └── domain.ts
├── jobs/                       # ← matches locked structure
│   └── (empty — populated in L2+)
├── emails/                     # MJML templates
│   └── (empty — populated in L2+)
└── server.ts                   # ← NEW: custom server entry point
```

#### Morning: Docker Compose (1 hour)

**Step 7: Docker Compose**

**File:** `docker-compose.yml`

```yaml
services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_DB: port_nimara_crm
      POSTGRES_USER: ${DB_USER:-crm}
      POSTGRES_PASSWORD: ${DB_PASSWORD}
    volumes:
      - pgdata:/var/lib/postgresql/data
      - ./docker/postgres/init.sql:/docker-entrypoint-initdb.d/01-init.sql
    healthcheck:
      test: ['CMD-SHELL', 'pg_isready -U crm -d port_nimara_crm']
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - internal

  redis:
    image: redis:7-alpine
    command: redis-server --requirepass ${REDIS_PASSWORD} --maxmemory 256mb --maxmemory-policy allkeys-lru
    volumes:
      - redisdata:/data
    healthcheck:
      test: ['CMD', 'redis-cli', '-a', '${REDIS_PASSWORD}', 'ping']
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - internal

  crm-app:
    build:
      context: .
      dockerfile: Dockerfile
    env_file: .env
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    healthcheck:
      test:
        ['CMD', 'wget', '--no-verbose', '--tries=1', '--spider', 'http://localhost:3000/api/health']
      interval: 15s
      timeout: 5s
      retries: 3
    networks:
      - internal

  crm-worker:
    build:
      context: .
      dockerfile: Dockerfile.worker
    env_file: .env
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - internal

  nginx:
    image: nginx:alpine
    ports:
      - '443:443'
      - '80:80'
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - ./nginx/certs:/etc/nginx/certs:ro
    depends_on:
      crm-app:
        condition: service_healthy
    networks:
      - internal

volumes:
  pgdata:
  redisdata:

networks:
  internal:
    driver: bridge
```

**File:** `docker-compose.dev.yml` (override)

```yaml
services:
  postgres:
    ports:
      - '5432:5432'
  redis:
    ports:
      - '6379:6379'
  crm-app:
    build:
      dockerfile: Dockerfile.dev
    ports:
      - '3000:3000'
    volumes:
      - .:/app
      - /app/node_modules
    command: pnpm dev
  crm-worker:
    profiles: ['worker'] # Optional in dev — server.ts runs workers inline
  nginx:
    profiles: ['nginx'] # Skip nginx in dev
```

**File:** `docker/postgres/init.sql`

```sql
CREATE EXTENSION IF NOT EXISTS "pgcrypto";
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
```

**File:** `Dockerfile`

```dockerfile
FROM node:20-alpine AS deps
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app
COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile --prod=false

FROM node:20-alpine AS builder
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ENV NEXT_TELEMETRY_DISABLED=1
RUN pnpm build

FROM node:20-alpine AS runner
RUN addgroup --system --gid 1001 nodejs && adduser --system --uid 1001 nextjs
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
USER nextjs
EXPOSE 3000
CMD ["node", "server.js"]
```

**File:** `Dockerfile.worker`

```dockerfile
FROM node:20-alpine AS deps
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app
COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile --prod

FROM node:20-alpine AS runner
RUN addgroup --system --gid 1001 nodejs && adduser --system --uid 1001 worker
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY dist/worker.js ./worker.js
USER worker
CMD ["node", "worker.js"]
```

**File:** `next.config.ts`

```typescript
import type { NextConfig } from 'next';

const nextConfig: NextConfig = {
  output: 'standalone',
  serverExternalPackages: [
    'pino',
    'pino-pretty',
    'bullmq',
    'ioredis',
    'minio',
    'postgres',
    'better-auth',
    'argon2',
    'nodemailer',
  ],
  images: {
    remotePatterns: [{ protocol: 'https', hostname: '*.portnimara.com' }],
  },
  experimental: {
    typedRoutes: true,
  },
};

export default nextConfig;
```

#### Afternoon: Database Layer (4 hours)

**Step 8: Install Drizzle + driver**

```bash
pnpm add drizzle-orm postgres
pnpm add -D drizzle-kit
```

**Step 9: Drizzle config**

**File:** `drizzle.config.ts`

```typescript
import { defineConfig } from 'drizzle-kit';

export default defineConfig({
  schema: './src/lib/db/schema',
  out: './src/lib/db/migrations',
  dialect: 'postgresql',
  dbCredentials: {
    url: process.env.DATABASE_URL!,
  },
  verbose: true,
  strict: true,
});
```

**Step 10: Drizzle client**

**File:** `src/lib/db/index.ts`

```typescript
import { drizzle } from 'drizzle-orm/postgres-js';
import postgres from 'postgres';

import * as schema from './schema';

const connectionString = process.env.DATABASE_URL!;

// Connection pool for queries
const queryClient = postgres(connectionString, {
  max: 20,
  idle_timeout: 20,
  connect_timeout: 10,
});

export const db = drizzle(queryClient, { schema, logger: process.env.NODE_ENV === 'development' });

export type Database = typeof db;
```

**Step 11: Define ALL 49 table schemas**

Each schema file follows these conventions from `07-DATABASE-SCHEMA.md`:

- UUID primary keys: `uuid('id').primaryKey().defaultRandom()`
- Timestamps: `timestamp('created_at', { withTimezone: true }).notNull().defaultNow()`
- Port scoping: `uuid('port_id').notNull().references(() => ports.id, { onDelete: 'cascade' })`
- Soft deletes: `timestamp('archived_at', { withTimezone: true })`

Schema files (matching `07-DATABASE-SCHEMA.md` exactly):

**File:** `src/lib/db/schema/ports.ts`

```typescript
import { pgTable, uuid, varchar, boolean, timestamp, jsonb } from 'drizzle-orm/pg-core';

export const ports = pgTable('ports', {
  id: uuid('id').primaryKey().defaultRandom(),
  name: varchar('name', { length: 100 }).notNull(),
  slug: varchar('slug', { length: 50 }).notNull().unique(),
  defaultCurrency: varchar('default_currency', { length: 3 }).notNull().default('USD'),
  timezone: varchar('timezone', { length: 50 }).notNull().default('America/Anguilla'),
  settings: jsonb('settings').$type<PortSettings>().default({}),
  branding: jsonb('branding').$type<PortBranding>().default({}),
  isActive: boolean('is_active').notNull().default(true),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export type PortSettings = {
  followUpReminderDays?: number[];
  tenureExpiryWarningMonths?: number;
  eoiReminderIntervalDays?: number;
  berthStatusRules?: Array<{
    trigger: string;
    mode: 'auto' | 'suggest' | 'off';
    targetStatus: string;
  }>;
};

export type PortBranding = {
  logoUrl?: string;
  primaryColor?: string;
  secondaryColor?: string;
};
```

**File:** `src/lib/db/schema/users.ts`

```typescript
import { pgTable, uuid, varchar, boolean, timestamp, jsonb, index } from 'drizzle-orm/pg-core';

import { ports } from './ports';

export const users = pgTable('users', {
  id: uuid('id').primaryKey().defaultRandom(),
  email: varchar('email', { length: 255 }).notNull().unique(),
  name: varchar('name', { length: 255 }).notNull(),
  emailVerified: boolean('email_verified').notNull().default(false),
  image: varchar('image', { length: 500 }),
  isSuperAdmin: boolean('is_super_admin').notNull().default(false),
  isActive: boolean('is_active').notNull().default(true),
  timezone: varchar('timezone', { length: 50 }).default('America/Anguilla'),
  preferences: jsonb('preferences').$type<UserPreferences>().default({}),
  lastLoginAt: timestamp('last_login_at', { withTimezone: true }),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export type UserPreferences = {
  sidebarCollapsed?: boolean;
  darkMode?: boolean;
  defaultPortId?: string;
  notificationChannels?: Record<string, { inApp: boolean; email: boolean }>;
};

export const roles = pgTable('roles', {
  id: uuid('id').primaryKey().defaultRandom(),
  name: varchar('name', { length: 100 }).notNull().unique(),
  description: varchar('description', { length: 500 }),
  permissions: jsonb('permissions').$type<RolePermissions>().notNull(),
  isSystem: boolean('is_system').notNull().default(false),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export const userPortRoles = pgTable(
  'user_port_roles',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    portId: uuid('port_id')
      .notNull()
      .references(() => ports.id, { onDelete: 'cascade' }),
    roleId: uuid('role_id')
      .notNull()
      .references(() => roles.id, { onDelete: 'restrict' }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [index('idx_upr_user_port').on(table.userId, table.portId)],
);

export const portRoleOverrides = pgTable('port_role_overrides', {
  id: uuid('id').primaryKey().defaultRandom(),
  portId: uuid('port_id')
    .notNull()
    .references(() => ports.id, { onDelete: 'cascade' }),
  roleId: uuid('role_id')
    .notNull()
    .references(() => roles.id, { onDelete: 'cascade' }),
  permissionOverrides: jsonb('permission_overrides').$type<Partial<RolePermissions>>().notNull(),
  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
});

export const sessions = pgTable(
  'sessions',
  {
    id: uuid('id').primaryKey().defaultRandom(),
    userId: uuid('user_id')
      .notNull()
      .references(() => users.id, { onDelete: 'cascade' }),
    token: varchar('token', { length: 500 }).notNull().unique(),
    expiresAt: timestamp('expires_at', { withTimezone: true }).notNull(),
    ipAddress: varchar('ip_address', { length: 45 }),
    userAgent: varchar('user_agent', { length: 500 }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [
    index('idx_sessions_token').on(table.token),
    index('idx_sessions_user').on(table.userId),
  ],
);

export type RolePermissions = {
  clients: {
    view: boolean;
    create: boolean;
    edit: boolean;
    delete: boolean;
    merge: boolean;
    export: boolean;
  };
  interests: {
    view: boolean;
    create: boolean;
    edit: boolean;
    delete: boolean;
    change_stage: boolean;
    generate_eoi: boolean;
    export: boolean;
  };
  berths: { view: boolean; edit: boolean; import: boolean; manage_waiting_list: boolean };
  documents: {
    view: boolean;
    create: boolean;
    send_for_signing: boolean;
    upload_signed: boolean;
    delete: boolean;
  };
  expenses: {
    view: boolean;
    create: boolean;
    edit: boolean;
    delete: boolean;
    export: boolean;
    scan_receipt: boolean;
  };
  invoices: {
    view: boolean;
    create: boolean;
    edit: boolean;
    delete: boolean;
    send: boolean;
    record_payment: boolean;
    export: boolean;
  };
  files: { view: boolean; upload: boolean; delete: boolean; manage_folders: boolean };
  email: { view: boolean; send: boolean; configure_account: boolean };
  reminders: {
    view_own: boolean;
    view_all: boolean;
    create: boolean;
    edit_own: boolean;
    edit_all: boolean;
    assign_others: boolean;
  };
  calendar: { connect: boolean; view_events: boolean };
  reports: { view_dashboard: boolean; view_analytics: boolean; export: boolean };
  document_templates: { view: boolean; generate: boolean; manage: boolean };
  admin: {
    manage_users: boolean;
    view_audit_log: boolean;
    manage_settings: boolean;
    manage_webhooks: boolean;
    manage_reports: boolean;
    manage_custom_fields: boolean;
    manage_forms: boolean;
    manage_tags: boolean;
    system_backup: boolean;
  };
};
```

I won't reproduce the full schema for every table here (the remaining 40+ tables follow the same conventions), but the key schema files and their table lists:

**File:** `src/lib/db/schema/clients.ts` — `clients`, `client_contacts`, `client_relationships`, `client_notes`, `client_tags`, `client_merge_log`

**File:** `src/lib/db/schema/interests.ts` — `interests`, `interest_notes`, `interest_tags`

**File:** `src/lib/db/schema/berths.ts` — `berths`, `berth_map_data`, `berth_recommendations`, `berth_waiting_list`, `berth_maintenance_log`, `berth_tags`

**File:** `src/lib/db/schema/documents.ts` — `documents`, `document_signers`, `document_events`, `document_templates`, `form_templates`, `form_submissions`

**File:** `src/lib/db/schema/financial.ts` — `expenses`, `invoices`, `invoice_line_items`, `invoice_expenses`

**File:** `src/lib/db/schema/email.ts` — `email_accounts`, `email_threads`, `email_messages`

**File:** `src/lib/db/schema/operations.ts` — `reminders`, `google_calendar_tokens`, `google_calendar_cache`, `notifications`, `scheduled_reports`, `report_recipients`

**File:** `src/lib/db/schema/system.ts` — `audit_logs`, `tags`, `files`, `webhooks`, `webhook_deliveries`, `system_settings`, `saved_views`, `scratchpad_notes`, `user_notification_preferences`, `currency_rates`, `custom_field_definitions`, `custom_field_values`

**Critical:** Every port-scoped table includes `portId: uuid('port_id').notNull().references(() => ports.id, { onDelete: 'cascade' })` and an index on `port_id`. Tables with soft deletes include `archivedAt` column. All foreign keys specify `onDelete` behavior per `07-DATABASE-SCHEMA.md`.

**File:** `src/lib/db/schema/relations.ts`

```typescript
import { relations } from 'drizzle-orm';
import { ports } from './ports';
import { users, roles, userPortRoles, portRoleOverrides, sessions } from './users';
import { clients, clientContacts, clientRelationships, clientNotes, clientTags } from './clients';
// ... all other imports

export const portsRelations = relations(ports, ({ many }) => ({
  userPortRoles: many(userPortRoles),
  portRoleOverrides: many(portRoleOverrides),
  clients: many(clients),
  interests: many(interests),
  berths: many(berths),
}));

export const usersRelations = relations(users, ({ many }) => ({
  sessions: many(sessions),
  portRoles: many(userPortRoles),
}));

export const userPortRolesRelations = relations(userPortRoles, ({ one }) => ({
  user: one(users, { fields: [userPortRoles.userId], references: [users.id] }),
  port: one(ports, { fields: [userPortRoles.portId], references: [ports.id] }),
  role: one(roles, { fields: [userPortRoles.roleId], references: [roles.id] }),
}));

// ... relations for all other tables following the same pattern
// Every FK gets a corresponding relation() declaration
```

**File:** `src/lib/db/schema/index.ts`

```typescript
export * from './ports';
export * from './users';
export * from './clients';
export * from './interests';
export * from './berths';
export * from './documents';
export * from './financial';
export * from './email';
export * from './operations';
export * from './system';
export * from './relations';
```

**Step 12: Run initial migration**

```bash
pnpm drizzle-kit generate
pnpm drizzle-kit push
```

Verify: all 49 tables created with correct columns, constraints, indexes, and the `pgcrypto` + `uuid-ossp` extensions enabled.

**Step 13: Seed data**

**File:** `src/lib/db/seed.ts`

Seeds:

1. Default port: `{ name: 'Port Nimara', slug: 'port-nimara', defaultCurrency: 'USD', timezone: 'America/Anguilla' }`
2. Five system roles matching `10-AUTH-AND-PERMISSIONS.md` Section 2.4:
   - `super_admin` — all permissions `true`
   - `director` — all operational permissions `true`, `admin.manage_users: true`, `admin.view_audit_log: true`, system admin `false`
   - `sales_manager` — full sales access, `reminders.view_all: true`, `reminders.assign_others: true`
   - `sales_agent` — standard sales (view/create/edit clients/interests, own reminders only)
   - `viewer` — all `view` permissions `true`, everything else `false`
3. Super admin user: `{ email: 'matt@portnimara.com', name: 'Matt', isSuperAdmin: true }` — password set via email flow
4. Assign Matt to Port Nimara with `super_admin` role

Run via: `pnpm tsx src/lib/db/seed.ts`

---

### Day 2 — Auth + Infrastructure

#### Morning: Authentication (3 hours)

**Step 14: Better Auth setup**

```bash
pnpm add better-auth @better-auth/redis
```

**File:** `src/lib/auth/index.ts`

```typescript
import { betterAuth } from 'better-auth';
import { drizzleAdapter } from 'better-auth/adapters/drizzle';
import { redis as redisPlugin } from '@better-auth/redis';

import { db } from '@/lib/db';
import { redis } from '@/lib/redis';
import { logger } from '@/lib/logger';

export const auth = betterAuth({
  database: drizzleAdapter(db),
  emailAndPassword: {
    enabled: true,
    minPasswordLength: 12,
    requireEmailVerification: false, // Admin-created accounts, no self-signup
  },
  session: {
    cookieCache: { enabled: true, maxAge: 5 * 60 },
    expiresIn: 60 * 60 * 24, // 24 hours absolute
    updateAge: 60 * 60 * 6, // Refresh in last 25%
  },
  plugins: [
    redisPlugin({ redis }), // Session store in Redis per 14-TECHNICAL-DECISIONS.md
  ],
  advanced: {
    cookiePrefix: 'pn-crm',
    defaultCookieAttributes: {
      httpOnly: true,
      secure: process.env.NODE_ENV === 'production',
      sameSite: 'strict' as const,
    },
  },
  logger: {
    error: (msg) => logger.error(msg, 'auth'),
    warn: (msg) => logger.warn(msg, 'auth'),
  },
});

export type Session = typeof auth.$Infer.Session;
```

**File:** `src/lib/auth/client.ts`

```typescript
import { createAuthClient } from 'better-auth/react';

export const authClient = createAuthClient({
  baseURL: process.env.NEXT_PUBLIC_APP_URL,
});

export const { useSession, signIn, signOut } = authClient;
```

**File:** `src/app/api/auth/[...all]/route.ts`

```typescript
import { auth } from '@/lib/auth';
import { toNextJsHandler } from 'better-auth/next-js';

export const { GET, POST } = toNextJsHandler(auth);
```

**Step 15: Auth + port context middleware for API routes**

**File:** `src/lib/api/helpers.ts`

```typescript
import { NextRequest, NextResponse } from 'next/server';
import { and, eq } from 'drizzle-orm';

import { auth } from '@/lib/auth';
import { db } from '@/lib/db';
import { users, userPortRoles, roles, portRoleOverrides } from '@/lib/db/schema';
import { type RolePermissions } from '@/lib/db/schema/users';
import { AppError, errorResponse } from '@/lib/errors';
import { createAuditLog } from '@/lib/audit';
import { logger } from '@/lib/logger';

export interface AuthContext {
  userId: string;
  portId: string;
  portSlug: string;
  isSuperAdmin: boolean;
  permissions: RolePermissions | null; // null = super admin (bypasses all)
  user: {
    email: string;
    name: string;
  };
  ipAddress: string;
  userAgent: string;
}

type RouteHandler<T = unknown> = (
  req: NextRequest,
  ctx: AuthContext,
  params: Record<string, string>,
) => Promise<NextResponse<T>>;

/**
 * Composable API route wrapper.
 * Usage: export const GET = withAuth(withPermission('clients', 'view', handler))
 */
export function withAuth(
  handler: RouteHandler,
): (
  req: NextRequest,
  context: { params: Promise<Record<string, string>> },
) => Promise<NextResponse> {
  return async (req, routeContext) => {
    try {
      // 1. Validate session
      const session = await auth.api.getSession({ headers: req.headers });
      if (!session?.user) {
        return NextResponse.json({ error: 'Authentication required' }, { status: 401 });
      }

      // 2. Load user record
      const user = await db.query.users.findFirst({
        where: eq(users.id, session.user.id),
      });
      if (!user || !user.isActive) {
        return NextResponse.json({ error: 'Account disabled' }, { status: 403 });
      }

      // 3. Determine port context from header or default
      const portId = req.headers.get('X-Port-Id') || user.preferences?.defaultPortId;
      if (!portId && !user.isSuperAdmin) {
        return NextResponse.json({ error: 'Port context required' }, { status: 400 });
      }

      // 4. Load permissions (skip for super admin)
      let permissions: RolePermissions | null = null;
      let portSlug = '';
      if (!user.isSuperAdmin && portId) {
        const portRole = await db.query.userPortRoles.findFirst({
          where: and(eq(userPortRoles.userId, user.id), eq(userPortRoles.portId, portId)),
          with: { role: true, port: true },
        });
        if (!portRole) {
          return NextResponse.json({ error: 'No access to this port' }, { status: 403 });
        }
        permissions = { ...portRole.role.permissions } as RolePermissions;
        portSlug = portRole.port?.slug ?? '';

        // Apply port overrides
        const override = await db.query.portRoleOverrides.findFirst({
          where: and(
            eq(portRoleOverrides.portId, portId),
            eq(portRoleOverrides.roleId, portRole.roleId),
          ),
        });
        if (override) {
          permissions = deepMerge(permissions, override.permissionOverrides) as RolePermissions;
        }
      }

      const ctx: AuthContext = {
        userId: user.id,
        portId: portId!,
        portSlug,
        isSuperAdmin: user.isSuperAdmin,
        permissions,
        user: { email: user.email, name: user.name },
        ipAddress: req.headers.get('x-forwarded-for')?.split(',')[0]?.trim() || 'unknown',
        userAgent: req.headers.get('user-agent') || 'unknown',
      };

      const params = await routeContext.params;
      return await handler(req, ctx, params);
    } catch (error) {
      return errorResponse(error);
    }
  };
}

export function withPermission(
  resource: keyof RolePermissions,
  action: string,
  handler: RouteHandler,
): RouteHandler {
  return async (req, ctx, params) => {
    if (!ctx.isSuperAdmin) {
      const resourcePerms = ctx.permissions?.[resource] as Record<string, boolean> | undefined;
      if (!resourcePerms || !resourcePerms[action]) {
        logger.warn({ userId: ctx.userId, resource, action }, 'Permission denied');
        await createAuditLog({
          userId: ctx.userId,
          portId: ctx.portId,
          action: 'permission_denied',
          entityType: resource,
          entityId: '',
          metadata: { attemptedAction: action },
          ipAddress: ctx.ipAddress,
          userAgent: ctx.userAgent,
        });
        return NextResponse.json({ error: 'Insufficient permissions' }, { status: 403 });
      }
    }
    return handler(req, ctx, params);
  };
}

function deepMerge(
  target: Record<string, unknown>,
  source: Record<string, unknown>,
): Record<string, unknown> {
  const result = { ...target };
  for (const key of Object.keys(source)) {
    if (
      typeof source[key] === 'object' &&
      source[key] !== null &&
      typeof result[key] === 'object' &&
      result[key] !== null
    ) {
      result[key] = deepMerge(
        result[key] as Record<string, unknown>,
        source[key] as Record<string, unknown>,
      );
    } else {
      result[key] = source[key];
    }
  }
  return result;
}
```

**Step 16: Next.js page-level middleware**

**File:** `src/middleware.ts`

```typescript
import { NextRequest, NextResponse } from 'next/server';

const PUBLIC_PATHS = ['/login', '/auth/', '/api/auth/', '/api/public/', '/api/health', '/scan'];

export function middleware(req: NextRequest) {
  const { pathname } = req.nextUrl;

  // Public paths — no auth check
  if (PUBLIC_PATHS.some((p) => pathname.startsWith(p))) {
    return NextResponse.next();
  }

  // Check for session cookie
  const sessionCookie = req.cookies.get('pn-crm.session_token');
  if (!sessionCookie?.value) {
    // API routes → 401 JSON
    if (pathname.startsWith('/api/')) {
      return NextResponse.json({ error: 'Authentication required' }, { status: 401 });
    }
    // Pages → redirect to login
    const loginUrl = new URL('/login', req.url);
    loginUrl.searchParams.set('redirect', pathname);
    return NextResponse.redirect(loginUrl);
  }

  return NextResponse.next();
}

export const config = {
  matcher: ['/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)'],
};
```

**Step 17: Login page**

**File:** `src/app/(auth)/login/page.tsx`

- Full-width centered card on dark navy (`#1e2844`) background
- PN logo + "Port Nimara" text + "Marina CRM" subtitle
- Email + password fields using shadcn `Input` + `Label` components
- React Hook Form + Zod validation:
  ```typescript
  const loginSchema = z.object({
    email: z.string().email('Invalid email'),
    password: z.string().min(1, 'Password is required'),
  });
  ```
- "Forgot password?" link → `/auth/reset-password`
- Rate limiting feedback: show lockout message after 5 failures
- On success: redirect to `/(dashboard)/[portSlug]/` (derive slug from user's port assignment)
- No "sign up" link — accounts are admin-created only
- shadcn components used: `Card`, `CardHeader`, `CardContent`, `Input`, `Label`, `Button`, `Form`

**File:** `src/app/(auth)/set-password/page.tsx`

- Token from URL search params
- New password + confirm password
- Zod schema: min 12 chars, 1 uppercase, 1 lowercase, 1 digit, 1 special char
  ```typescript
  const passwordSchema = z
    .object({
      password: z
        .string()
        .min(12, 'Minimum 12 characters')
        .regex(/[A-Z]/, 'Must contain uppercase letter')
        .regex(/[a-z]/, 'Must contain lowercase letter')
        .regex(/[0-9]/, 'Must contain digit')
        .regex(/[^A-Za-z0-9]/, 'Must contain special character'),
      confirmPassword: z.string(),
    })
    .refine((data) => data.password === data.confirmPassword, {
      message: 'Passwords must match',
      path: ['confirmPassword'],
    });
  ```

**File:** `src/app/(auth)/reset-password/page.tsx`

- Email input form → submit → same success message regardless of whether email exists

**File:** `src/app/(auth)/layout.tsx`

- Dark navy background, centered content, no sidebar/topbar
- Port Nimara branding

#### Afternoon: Infrastructure (3 hours)

**Step 18: Redis connection**

```bash
pnpm add ioredis
```

**File:** `src/lib/redis.ts`

```typescript
import Redis from 'ioredis';

import { logger } from '@/lib/logger';

const redisUrl = process.env.REDIS_URL!;

export const redis = new Redis(redisUrl, {
  maxRetriesPerRequest: 3,
  retryStrategy(times) {
    const delay = Math.min(times * 200, 2000);
    return delay;
  },
  lazyConnect: true,
});

redis.on('error', (err) => logger.error({ err }, 'Redis connection error'));
redis.on('connect', () => logger.info('Redis connected'));
```

**Step 19: Application-level rate limiter**

**File:** `src/lib/rate-limit.ts`

```typescript
import { NextResponse } from 'next/server';

import { redis } from '@/lib/redis';

interface RateLimitConfig {
  windowMs: number;
  max: number;
  keyPrefix: string;
}

interface RateLimitResult {
  allowed: boolean;
  limit: number;
  remaining: number;
  resetAt: number;
}

export async function checkRateLimit(
  identifier: string,
  config: RateLimitConfig,
): Promise<RateLimitResult> {
  const key = `rl:${config.keyPrefix}:${identifier}`;
  const now = Date.now();
  const windowStart = now - config.windowMs;

  const pipeline = redis.pipeline();
  pipeline.zremrangebyscore(key, '-inf', windowStart);
  pipeline.zadd(key, now.toString(), `${now}:${Math.random()}`);
  pipeline.zcard(key);
  pipeline.pexpire(key, config.windowMs);
  const results = await pipeline.exec();

  const count = (results?.[2]?.[1] as number) ?? 0;
  const remaining = Math.max(0, config.max - count);

  return {
    allowed: count <= config.max,
    limit: config.max,
    remaining,
    resetAt: now + config.windowMs,
  };
}

export function rateLimitHeaders(result: RateLimitResult): Record<string, string> {
  return {
    'X-RateLimit-Limit': result.limit.toString(),
    'X-RateLimit-Remaining': result.remaining.toString(),
    'X-RateLimit-Reset': Math.ceil(result.resetAt / 1000).toString(),
  };
}

// Pre-configured limiters
export const rateLimiters = {
  auth: { windowMs: 15 * 60 * 1000, max: 5, keyPrefix: 'auth' },
  api: { windowMs: 60 * 1000, max: 120, keyPrefix: 'api' },
  upload: { windowMs: 60 * 1000, max: 10, keyPrefix: 'upload' },
  bulk: { windowMs: 60 * 1000, max: 5, keyPrefix: 'bulk' },
} as const;
```

**Step 20: Structured logger**

```bash
pnpm add pino pino-pretty
```

**File:** `src/lib/logger.ts`

```typescript
import pino from 'pino';

export const logger = pino({
  level: process.env.LOG_LEVEL || 'info',
  redact: {
    paths: [
      'password',
      'token',
      'secret',
      'accessKey',
      'secretKey',
      'creditCard',
      '*.password',
      '*.token',
    ],
    censor: '[REDACTED]',
  },
  transport:
    process.env.NODE_ENV !== 'production'
      ? { target: 'pino-pretty', options: { colorize: true } }
      : undefined,
  serializers: {
    err: pino.stdSerializers.err,
    req: pino.stdSerializers.req,
  },
});
```

**Step 21: Error handling**

**File:** `src/lib/errors.ts`

```typescript
import { NextResponse } from 'next/server';
import { ZodError } from 'zod';

import { logger } from '@/lib/logger';

export class AppError extends Error {
  constructor(
    public statusCode: number,
    message: string,
    public code?: string,
  ) {
    super(message);
    this.name = 'AppError';
  }
}

export class NotFoundError extends AppError {
  constructor(entity: string) {
    super(404, `${entity} not found`, 'NOT_FOUND');
  }
}

export class ForbiddenError extends AppError {
  constructor(message = 'Access denied') {
    super(403, message, 'FORBIDDEN');
  }
}

export class ValidationError extends AppError {
  constructor(
    message: string,
    public details?: Array<{ field: string; message: string }>,
  ) {
    super(400, message, 'VALIDATION_ERROR');
  }
}

export class ConflictError extends AppError {
  constructor(message: string) {
    super(409, message, 'CONFLICT');
  }
}

export class RateLimitError extends AppError {
  constructor(public retryAfter: number) {
    super(429, 'Too many requests', 'RATE_LIMITED');
  }
}

export function errorResponse(error: unknown): NextResponse {
  if (error instanceof AppError) {
    const body: Record<string, unknown> = { error: error.message, code: error.code };
    if (error instanceof ValidationError && error.details) {
      body.details = error.details;
    }
    if (error instanceof RateLimitError) {
      body.retryAfter = error.retryAfter;
    }
    return NextResponse.json(body, { status: error.statusCode });
  }

  if (error instanceof ZodError) {
    return NextResponse.json(
      {
        error: 'Validation failed',
        code: 'VALIDATION_ERROR',
        details: error.errors.map((e) => ({
          field: e.path.join('.'),
          message: e.message,
        })),
      },
      { status: 400 },
    );
  }

  // Never leak internals
  logger.error({ err: error }, 'Unhandled error');
  return NextResponse.json({ error: 'Internal server error' }, { status: 500 });
}
```

**Step 22: Audit log module**

**File:** `src/lib/audit.ts`

```typescript
import { db } from '@/lib/db';
import { auditLogs } from '@/lib/db/schema';
import { logger } from '@/lib/logger';

interface AuditLogParams {
  userId: string;
  portId: string;
  action:
    | 'create'
    | 'update'
    | 'delete'
    | 'archive'
    | 'restore'
    | 'merge'
    | 'login'
    | 'logout'
    | 'permission_denied'
    | 'revert';
  entityType: string;
  entityId: string;
  fieldChanged?: string;
  oldValue?: Record<string, unknown>;
  newValue?: Record<string, unknown>;
  metadata?: Record<string, unknown>;
  ipAddress: string;
  userAgent: string;
}

export async function createAuditLog(params: AuditLogParams): Promise<void> {
  try {
    await db.insert(auditLogs).values({
      portId: params.portId || null,
      userId: params.userId || null,
      action: params.action,
      entityType: params.entityType,
      entityId: params.entityId,
      fieldChanged: params.fieldChanged,
      oldValue: maskSensitiveFields(params.oldValue),
      newValue: maskSensitiveFields(params.newValue),
      metadata: params.metadata,
      ipAddress: params.ipAddress,
      userAgent: params.userAgent,
    });
  } catch (err) {
    // Audit logging must never crash the parent operation
    logger.error(
      { err, params: { ...params, oldValue: undefined, newValue: undefined } },
      'Failed to write audit log',
    );
  }
}

/**
 * Computes field-level diff between old and new records.
 * Returns an array of { field, oldValue, newValue } for changed fields.
 */
export function diffFields(
  oldRecord: Record<string, unknown>,
  newRecord: Record<string, unknown>,
): Array<{ field: string; oldValue: unknown; newValue: unknown }> {
  const changes: Array<{ field: string; oldValue: unknown; newValue: unknown }> = [];
  for (const key of Object.keys(newRecord)) {
    if (JSON.stringify(oldRecord[key]) !== JSON.stringify(newRecord[key])) {
      changes.push({ field: key, oldValue: oldRecord[key], newValue: newRecord[key] });
    }
  }
  return changes;
}

const SENSITIVE_FIELDS = new Set(['email', 'phone', 'password', 'credentials_enc', 'token']);

function maskSensitiveFields(data?: Record<string, unknown>): Record<string, unknown> | undefined {
  if (!data) return undefined;
  const masked = { ...data };
  for (const key of Object.keys(masked)) {
    if (SENSITIVE_FIELDS.has(key) && typeof masked[key] === 'string') {
      const val = masked[key] as string;
      masked[key] = val.length > 4 ? `${val.slice(0, 2)}***${val.slice(-2)}` : '***';
    }
  }
  return masked;
}
```

**Step 23: Database utility functions**

**File:** `src/lib/db/utils.ts`

```typescript
import { sql, eq, and } from 'drizzle-orm';
import type { PgTable } from 'drizzle-orm/pg-core';

import { db, type Database } from '@/lib/db';

/**
 * Transaction wrapper with automatic rollback on error.
 */
export async function withTransaction<T>(fn: (tx: Database) => Promise<T>): Promise<T> {
  return db.transaction(fn);
}

/**
 * Soft delete: sets archived_at timestamp.
 * The table must have an `archivedAt` column and `portId` column.
 */
export async function softDelete(
  table: PgTable & { archivedAt: any; id: any; portId: any },
  id: string,
  portId: string,
): Promise<void> {
  await db
    .update(table)
    .set({ archivedAt: sql`now()` } as any)
    .where(and(eq(table.id, id), eq(table.portId, portId)));
}

/**
 * Restore: clears archived_at timestamp.
 */
export async function restore(
  table: PgTable & { archivedAt: any; id: any; portId: any },
  id: string,
  portId: string,
): Promise<void> {
  await db
    .update(table)
    .set({ archivedAt: null } as any)
    .where(and(eq(table.id, id), eq(table.portId, portId)));
}
```

**Step 24: MinIO client**

```bash
pnpm add minio
```

**File:** `src/lib/minio/index.ts`

```typescript
import { Client } from 'minio';

import { logger } from '@/lib/logger';

export const minioClient = new Client({
  endPoint: process.env.MINIO_ENDPOINT!,
  port: parseInt(process.env.MINIO_PORT!, 10),
  useSSL: process.env.MINIO_USE_SSL === 'true',
  accessKey: process.env.MINIO_ACCESS_KEY!,
  secretKey: process.env.MINIO_SECRET_KEY!,
});

const BUCKET = process.env.MINIO_BUCKET!;

export async function ensureBucket(): Promise<void> {
  try {
    const exists = await minioClient.bucketExists(BUCKET);
    if (!exists) {
      await minioClient.makeBucket(BUCKET);
      logger.info({ bucket: BUCKET }, 'MinIO bucket created');
    }
  } catch (err) {
    logger.error({ err }, 'Failed to ensure MinIO bucket');
    throw err;
  }
}

/**
 * Generate presigned download URL (15-minute expiry per SECURITY-GUIDELINES.md)
 */
export async function getPresignedUrl(objectKey: string, expirySeconds = 900): Promise<string> {
  return minioClient.presignedGetObject(BUCKET, objectKey, expirySeconds);
}

/**
 * Build storage path from components (no user input in path — UUIDs only).
 * Format: {portSlug}/{entity}/{entityId}/{uuid}.{ext}
 */
export function buildStoragePath(
  portSlug: string,
  entity: string,
  entityId: string,
  fileId: string,
  extension: string,
): string {
  return `${portSlug}/${entity}/${entityId}/${fileId}.${extension}`;
}
```

**Step 25: Health check endpoint**

**File:** `src/app/api/health/route.ts`

```typescript
import { NextResponse } from 'next/server';

import { db } from '@/lib/db';
import { redis } from '@/lib/redis';
import { minioClient } from '@/lib/minio';
import { sql } from 'drizzle-orm';

export async function GET() {
  const checks: Record<string, 'ok' | 'error'> = {};

  try {
    await db.execute(sql`SELECT 1`);
    checks.postgres = 'ok';
  } catch {
    checks.postgres = 'error';
  }

  try {
    await redis.ping();
    checks.redis = 'ok';
  } catch {
    checks.redis = 'error';
  }

  try {
    await minioClient.bucketExists(process.env.MINIO_BUCKET!);
    checks.minio = 'ok';
  } catch {
    checks.minio = 'error';
  }

  const allOk = Object.values(checks).every((v) => v === 'ok');
  return NextResponse.json(
    { status: allOk ? 'healthy' : 'degraded', checks, timestamp: new Date().toISOString() },
    { status: allOk ? 200 : 503 },
  );
}
```

---

### Day 3 — Socket.io + BullMQ + Layout Shell (Part 1)

#### Morning: Real-time + Background Jobs (3 hours)

**Step 26: Socket.io server**

```bash
pnpm add socket.io socket.io-client @socket.io/redis-adapter
```

**File:** `src/lib/socket/events.ts`

Type-safe event definitions matching `11-REALTIME-AND-BACKGROUND-JOBS.md` Section 2:

```typescript
// Server → Client events
export interface ServerToClientEvents {
  // Berth events
  'berth:statusChanged': (payload: {
    berthId: string;
    oldStatus: string;
    newStatus: string;
    triggeredBy: string;
  }) => void;
  'berth:updated': (payload: { berthId: string; changedFields: string[] }) => void;
  'berth:waitingListChanged': (payload: {
    berthId: string;
    action: string;
    entry: unknown;
  }) => void;
  'berth:maintenanceAdded': (payload: { berthId: string; logEntry: unknown }) => void;

  // Client events
  'client:created': (payload: { clientId: string; clientName: string; source: string }) => void;
  'client:updated': (payload: { clientId: string; changedFields: string[] }) => void;
  'client:archived': (payload: { clientId: string }) => void;
  'client:restored': (payload: { clientId: string }) => void;
  'client:merged': (payload: { survivingId: string; mergedId: string }) => void;
  'client:noteAdded': (payload: {
    clientId: string;
    noteId: string;
    authorName: string;
    preview: string;
  }) => void;
  'client:duplicateDetected': (payload: {
    clientAId: string;
    clientBId: string;
    score: number;
    reason: string;
  }) => void;

  // Interest events
  'interest:created': (payload: {
    interestId: string;
    clientId: string;
    berthId: string | null;
    source: string;
  }) => void;
  'interest:updated': (payload: { interestId: string; changedFields: string[] }) => void;
  'interest:stageChanged': (payload: {
    interestId: string;
    oldStage: string;
    newStage: string;
    clientName: string;
    berthNumber: string;
  }) => void;
  'interest:berthLinked': (payload: { interestId: string; berthId: string }) => void;
  'interest:berthUnlinked': (payload: { interestId: string; berthId: string }) => void;
  'interest:archived': (payload: { interestId: string }) => void;
  'interest:noteAdded': (payload: {
    interestId: string;
    noteId: string;
    authorName: string;
    preview: string;
  }) => void;
  'interest:recommendationsGenerated': (payload: {
    interestId: string;
    count: number;
    topBerthId: string;
  }) => void;
  'interest:recommendationAdded': (payload: {
    interestId: string;
    berthId: string;
    source: string;
    matchScore: number;
  }) => void;
  'interest:leadCategoryChanged': (payload: {
    interestId: string;
    oldCategory: string;
    newCategory: string;
    auto: boolean;
  }) => void;

  // Document events
  'document:created': (payload: { documentId: string; type: string; interestId: string }) => void;
  'document:sent': (payload: { documentId: string; type: string; signerCount: number }) => void;
  'document:signed': (payload: {
    documentId: string;
    signerName: string;
    signerRole: string;
    remainingSigners: number;
  }) => void;
  'document:completed': (payload: {
    documentId: string;
    type: string;
    interestId: string;
    clientName: string;
  }) => void;
  'document:expired': (payload: { documentId: string }) => void;
  'document:reminderSent': (payload: { documentId: string; recipientEmail: string }) => void;

  // Financial events
  'expense:created': (payload: {
    expenseId: string;
    amount: number;
    currency: string;
    category: string;
  }) => void;
  'expense:updated': (payload: { expenseId: string; changedFields: string[] }) => void;
  'invoice:created': (payload: {
    invoiceId: string;
    invoiceNumber: string;
    total: number;
    clientName: string;
  }) => void;
  'invoice:sent': (payload: {
    invoiceId: string;
    invoiceNumber: string;
    recipientEmail: string;
  }) => void;
  'invoice:paid': (payload: { invoiceId: string; invoiceNumber: string; amount: number }) => void;
  'invoice:overdue': (payload: {
    invoiceId: string;
    invoiceNumber: string;
    daysPastDue: number;
  }) => void;

  // Reminder & Calendar events
  'reminder:created': (payload: {
    reminderId: string;
    title: string;
    assignedTo: string;
    dueAt: string;
  }) => void;
  'reminder:updated': (payload: { reminderId: string; changedFields: string[] }) => void;
  'reminder:completed': (payload: {
    reminderId: string;
    title: string;
    completedBy: string;
  }) => void;
  'reminder:overdue': (payload: { reminderId: string; title: string; dueAt: string }) => void;
  'reminder:snoozed': (payload: { reminderId: string; snoozedUntil: string }) => void;
  'calendar:synced': (payload: { eventCount: number; lastSyncAt: string }) => void;
  'calendar:disconnected': (payload: { reason: string }) => void;

  // Notification events
  'notification:new': (payload: {
    notificationId: string;
    type: string;
    title: string;
    description: string;
    link: string;
  }) => void;
  'notification:unreadCount': (payload: { count: number }) => void;

  // System events
  'system:alert': (payload: { alertType: string; message: string; severity: string }) => void;
  'system:jobFailed': (payload: { queueName: string; jobId: string; error: string }) => void;
  'registration:new': (payload: {
    clientId: string;
    interestId: string;
    clientName: string;
    berthNumber: string;
  }) => void;

  // File events
  'file:uploaded': (payload: {
    fileId: string;
    filename: string;
    clientId: string;
    category: string;
  }) => void;
  'file:deleted': (payload: { fileId: string; filename: string }) => void;
}

// Client → Server events (minimal — most actions go through REST API)
export interface ClientToServerEvents {
  'join:entity': (payload: { type: 'berth' | 'client' | 'interest'; id: string }) => void;
  'leave:entity': (payload: { type: 'berth' | 'client' | 'interest'; id: string }) => void;
}
```

**File:** `src/lib/socket/server.ts`

```typescript
import { Server } from 'socket.io';
import { createAdapter } from '@socket.io/redis-adapter';
import type { Server as HTTPServer } from 'node:http';

import { redis } from '@/lib/redis';
import { auth } from '@/lib/auth';
import { logger } from '@/lib/logger';
import type { ServerToClientEvents, ClientToServerEvents } from './events';

let io: Server<ClientToServerEvents, ServerToClientEvents> | null = null;

export function initSocketServer(
  httpServer: HTTPServer,
): Server<ClientToServerEvents, ServerToClientEvents> {
  const pubClient = redis.duplicate();
  const subClient = redis.duplicate();

  io = new Server<ClientToServerEvents, ServerToClientEvents>(httpServer, {
    path: '/socket.io/',
    adapter: createAdapter(pubClient, subClient),
    cors: {
      origin: process.env.APP_URL,
      credentials: true,
    },
    connectionStateRecovery: { maxDisconnectionDuration: 2 * 60 * 1000 },
    maxHttpBufferSize: 1e6, // 1MB message limit per SECURITY-GUIDELINES.md
  });

  // Auth middleware — validate session cookie
  io.use(async (socket, next) => {
    try {
      const cookie = socket.handshake.headers.cookie;
      if (!cookie) return next(new Error('Authentication required'));

      // Parse session from cookie
      const session = await auth.api.getSession({
        headers: new Headers({ cookie }),
      });
      if (!session?.user) return next(new Error('Invalid session'));

      // Enforce max 10 connections per user
      const userSockets = await io!.in(`user:${session.user.id}`).fetchSockets();
      if (userSockets.length >= 10) {
        return next(new Error('Maximum connections reached'));
      }

      socket.data = {
        userId: session.user.id,
        portId: socket.handshake.auth.portId,
      };
      next();
    } catch {
      next(new Error('Authentication failed'));
    }
  });

  // Connection handler
  io.on('connection', (socket) => {
    const { userId, portId } = socket.data;
    logger.debug({ userId, portId }, 'Socket connected');

    // Auto-join rooms
    socket.join(`user:${userId}`);
    if (portId) socket.join(`port:${portId}`);

    // Entity-level room management
    socket.on('join:entity', ({ type, id }) => {
      socket.join(`${type}:${id}`);
    });
    socket.on('leave:entity', ({ type, id }) => {
      socket.leave(`${type}:${id}`);
    });

    // Idle timeout (30 seconds per SECURITY-GUIDELINES.md)
    let idleTimer = setTimeout(() => socket.disconnect(), 30_000);
    socket.onAny(() => {
      clearTimeout(idleTimer);
      idleTimer = setTimeout(() => socket.disconnect(), 30_000);
    });

    socket.on('disconnect', () => {
      clearTimeout(idleTimer);
      logger.debug({ userId }, 'Socket disconnected');
    });
  });

  return io;
}

export function getIO(): Server<ClientToServerEvents, ServerToClientEvents> {
  if (!io) throw new Error('Socket.io not initialized');
  return io;
}

/**
 * Emit an event to a specific room. Used by service layer after mutations.
 */
export function emitToRoom<E extends keyof ServerToClientEvents>(
  room: string,
  event: E,
  ...args: Parameters<ServerToClientEvents[E]>
): void {
  if (!io) return;
  io.to(room).emit(event, ...args);
}
```

**File:** `src/providers/socket-provider.tsx`

```typescript
'use client';

import { createContext, useContext, useEffect, useState, type ReactNode } from 'react';
import { io, type Socket } from 'socket.io-client';

import { useSession } from '@/lib/auth/client';
import { usePortStore } from '@/stores/ui-store';

const SocketContext = createContext<Socket | null>(null);

export function SocketProvider({ children }: { children: ReactNode }) {
  const { data: session } = useSession();
  const currentPortId = usePortStore((s) => s.currentPortId);
  const [socket, setSocket] = useState<Socket | null>(null);

  useEffect(() => {
    if (!session?.user || !currentPortId) return;

    const s = io(process.env.NEXT_PUBLIC_APP_URL!, {
      path: '/socket.io/',
      withCredentials: true,
      auth: { portId: currentPortId },
      transports: ['websocket', 'polling'],
    });

    s.on('connect', () => setSocket(s));
    s.on('disconnect', () => setSocket(null));

    return () => {
      s.disconnect();
      setSocket(null);
    };
  }, [session?.user, currentPortId]);

  return (
    <SocketContext.Provider value={socket}>
      {children}
    </SocketContext.Provider>
  );
}

export function useSocket() {
  return useContext(SocketContext);
}
```

**Step 27: BullMQ setup**

```bash
pnpm add bullmq
```

**File:** `src/lib/queue/index.ts`

```typescript
import { Queue } from 'bullmq';

import { redis } from '@/lib/redis';

// 10 queues matching 11-REALTIME-AND-BACKGROUND-JOBS.md Section 3.1
const QUEUE_CONFIGS = {
  email: { concurrency: 5, maxAttempts: 5 },
  documents: { concurrency: 3, maxAttempts: 5 },
  notifications: { concurrency: 10, maxAttempts: 3 },
  import: { concurrency: 1, maxAttempts: 1 },
  export: { concurrency: 2, maxAttempts: 3 },
  reports: { concurrency: 1, maxAttempts: 3 },
  webhooks: { concurrency: 5, maxAttempts: 3 },
  maintenance: { concurrency: 1, maxAttempts: 3 },
  ai: { concurrency: 2, maxAttempts: 3 },
  bulk: { concurrency: 2, maxAttempts: 3 },
} as const;

export type QueueName = keyof typeof QUEUE_CONFIGS;

const queues = new Map<QueueName, Queue>();

export function getQueue(name: QueueName): Queue {
  let queue = queues.get(name);
  if (!queue) {
    queue = new Queue(name, {
      connection: redis,
      defaultJobOptions: {
        attempts: QUEUE_CONFIGS[name].maxAttempts,
        backoff: { type: 'exponential', delay: 1000 },
        removeOnComplete: { age: 24 * 3600 },
        removeOnFail: { age: 7 * 24 * 3600 },
      },
    });
    queues.set(name, queue);
  }
  return queue;
}

export { QUEUE_CONFIGS };
```

**File:** `src/lib/queue/scheduler.ts`

```typescript
import { getQueue } from './index';
import { logger } from '@/lib/logger';

/**
 * Register all recurring jobs from 11-REALTIME-AND-BACKGROUND-JOBS.md Section 3.2
 * Called once on server startup.
 */
export async function registerRecurringJobs(): Promise<void> {
  const recurring = [
    { queue: 'documents', name: 'signature-poll', pattern: '0 */6 * * *' },
    { queue: 'notifications', name: 'reminder-check', pattern: '0 * * * *' },
    { queue: 'notifications', name: 'reminder-overdue-check', pattern: '*/15 * * * *' },
    { queue: 'maintenance', name: 'calendar-sync', pattern: '*/30 * * * *' },
    { queue: 'notifications', name: 'invoice-overdue-check', pattern: '0 8 * * *' },
    { queue: 'notifications', name: 'tenure-expiry-check', pattern: '0 8 * * *' },
    { queue: 'maintenance', name: 'currency-refresh', pattern: '0 */6 * * *' },
    { queue: 'maintenance', name: 'database-backup', pattern: '0 2 * * *' },
    { queue: 'maintenance', name: 'backup-cleanup', pattern: '0 3 * * 0' },
    { queue: 'maintenance', name: 'session-cleanup', pattern: '0 4 * * *' },
    { queue: 'reports', name: 'report-scheduler', pattern: '* * * * *' },
    { queue: 'maintenance', name: 'temp-file-cleanup', pattern: '0 5 * * *' },
    { queue: 'maintenance', name: 'form-expiry-check', pattern: '0 * * * *' },
  ] as const;

  for (const job of recurring) {
    const queue = getQueue(job.queue as any);
    await queue.upsertJobScheduler(
      job.name,
      { pattern: job.pattern },
      { data: {}, name: job.name },
    );
    logger.info(
      { queue: job.queue, job: job.name, pattern: job.pattern },
      'Registered recurring job',
    );
  }
}
```

**File:** `src/lib/queue/workers/` — one stub file per queue (e.g., `email.ts`, `documents.ts`, etc.):

```typescript
// src/lib/queue/workers/email.ts
import { Worker, type Job } from 'bullmq';
import { redis } from '@/lib/redis';
import { logger } from '@/lib/logger';

export const emailWorker = new Worker(
  'email',
  async (job: Job) => {
    logger.info({ jobId: job.id, jobName: job.name }, 'Processing email job');
    // TODO: implement in Layer 2
  },
  {
    connection: redis,
    concurrency: 5,
  },
);

emailWorker.on('failed', (job, err) => {
  logger.error({ jobId: job?.id, err }, 'Email job failed');
});
```

#### Afternoon: Layout Shell Start (3 hours) — continues into Day 4

**Step 28: Install shadcn/ui + core components**

```bash
pnpm dlx shadcn@latest init
```

Configure: New York style, Tailwind CSS, navy theme.

Install all core components from `14-TECHNICAL-DECISIONS.md` Section 2.2:

```bash
pnpm dlx shadcn@latest add button input label select textarea checkbox radio-group switch dialog sheet dropdown-menu command tabs table card badge avatar tooltip popover calendar form skeleton separator scroll-area alert-dialog accordion breadcrumb navigation-menu pagination progress slider sonner
```

**Step 29: Tailwind config with design tokens**

**File:** `tailwind.config.ts`

Apply ALL tokens from `15-DESIGN-TOKENS.md`:

- Brand colors with full tint ladders (`navy`, `brand`, `sage`, `mint`, `teal`, `purple`)
- Semantic color variables via CSS custom properties
- Shadows using `rgba(30, 40, 68, ...)` values
- Typography: Inter (font-sans), Georgia (font-serif), JetBrains Mono (font-mono)
- Border radius variable

**File:** `src/app/globals.css`

All CSS custom properties from `15-DESIGN-TOKENS.md` Section 5 — light mode defaults and dark mode overrides via `[data-theme="dark"]` or `.dark` class. Full HSL values for shadcn/ui compatibility.

---

### Day 4 — Layout Shell (Part 2) + Security + Verification

#### Morning: Layout Components (3 hours)

**Step 30: Root layout + providers**

**File:** `src/app/layout.tsx`

```typescript
import type { Metadata } from 'next';
import { Inter, JetBrains_Mono } from 'next/font/google';
import { Toaster } from '@/components/ui/sonner';
import './globals.css';

const inter = Inter({ subsets: ['latin'], variable: '--font-sans' });
const jetbrainsMono = JetBrains_Mono({ subsets: ['latin'], variable: '--font-mono' });

export const metadata: Metadata = {
  title: 'Port Nimara CRM',
  description: 'Marina management system',
};

export default function RootLayout({ children }: { children: React.ReactNode }) {
  return (
    <html lang="en" suppressHydrationWarning>
      <body className={`${inter.variable} ${jetbrainsMono.variable} font-sans antialiased`}>
        {children}
        <Toaster richColors position="top-right" />
      </body>
    </html>
  );
}
```

**File:** `src/app/(dashboard)/layout.tsx`

```typescript
import { redirect } from 'next/navigation';
import { headers } from 'next/headers';

import { auth } from '@/lib/auth';
import { db } from '@/lib/db';
import { QueryProvider } from '@/providers/query-provider';
import { SocketProvider } from '@/providers/socket-provider';
import { PortProvider } from '@/providers/port-provider';
import { Sidebar } from '@/components/layout/sidebar';
import { Topbar } from '@/components/layout/topbar';

export default async function DashboardLayout({ children }: { children: React.ReactNode }) {
  const session = await auth.api.getSession({ headers: await headers() });
  if (!session?.user) redirect('/login');

  // Load user's port assignments for PortProvider
  const portRoles = await db.query.userPortRoles.findMany({
    where: eq(userPortRoles.userId, session.user.id),
    with: { port: true, role: true },
  });

  return (
    <QueryProvider>
      <PortProvider ports={portRoles.map(pr => pr.port)} defaultPortId={portRoles[0]?.port.id}>
        <SocketProvider>
          <div className="flex h-screen overflow-hidden">
            <Sidebar ports={portRoles} />
            <div className="flex-1 flex flex-col overflow-hidden">
              <Topbar />
              <main className="flex-1 overflow-y-auto bg-background p-6">
                {children}
              </main>
            </div>
          </div>
        </SocketProvider>
      </PortProvider>
    </QueryProvider>
  );
}
```

**File:** `src/components/layout/sidebar.tsx`

- Dark navy background (`bg-[#1e2844]`)
- Logo area: "PN" mark + "Port Nimara" + "Marina CRM"
- Navigation sections per `13-UI-PAGE-MAP.md`:
  - **Main:** Dashboard, Clients, Interests, Berths
  - **Financial:** Expenses, Invoices
  - **Operations:** Files, Email, Reminders
  - **Admin** (expandable, permission-gated): Users, Roles, Ports, Audit, Settings, etc.
- Active state: `border-l-2 border-brand bg-sidebar-active text-white`
- Hover state: `bg-[#171f35]`
- Icons: Lucide React (`LayoutDashboard`, `Users`, `Bookmark`, `Anchor`, `Receipt`, `FileText`, `FolderOpen`, `Mail`, `Bell`, `Settings`, `Shield`)
- Collapsible: persisted via Zustand `sidebarCollapsed`
- Mobile: Sheet/drawer triggered by hamburger
- User footer: avatar + name + role badge
- shadcn components: `Sheet`, `ScrollArea`, `Tooltip`, `Badge`, `Avatar`, `Separator`

**File:** `src/components/layout/topbar.tsx`

- Page title (derived from route params)
- Search box: `Button` with `⌘K` label → placeholder for Command palette (implemented in L3)
- Notification bell: `Button` with `Badge` unread count dot → placeholder panel
- "+ New" dropdown: `DropdownMenu` with context-aware options (New Client, New Interest, New Expense)
- Port switcher (only if 2+ ports): `Select` dropdown with port names
- User menu: `DropdownMenu` with Profile, Dark Mode toggle, Scratchpad, Logout
- shadcn components: `Button`, `DropdownMenu`, `Badge`, `Avatar`, `Separator`

**File:** `src/components/layout/port-switcher.tsx`

- Hidden when user has only 1 port
- `Select` dropdown showing port name
- On change: updates Zustand `currentPortId` → invalidates all TanStack Query caches → Socket.io reconnects to new port room

**File:** `src/components/layout/breadcrumbs.tsx`

- Auto-generated from `usePathname()` route segments
- Maps `[portSlug]` to port name
- Clickable segments using shadcn `Breadcrumb` component

**Step 31: Zustand UI store**

```bash
pnpm add zustand
```

**File:** `src/stores/ui-store.ts`

```typescript
import { create } from 'zustand';
import { persist } from 'zustand/middleware';

interface UIStore {
  sidebarCollapsed: boolean;
  currentPortId: string | null;
  currentPortSlug: string | null;
  darkMode: boolean;
  toggleSidebar: () => void;
  setPort: (portId: string, portSlug: string) => void;
  toggleDarkMode: () => void;
}

export const useUIStore = create<UIStore>()(
  persist(
    (set) => ({
      sidebarCollapsed: false,
      currentPortId: null,
      currentPortSlug: null,
      darkMode: false,
      toggleSidebar: () => set((s) => ({ sidebarCollapsed: !s.sidebarCollapsed })),
      setPort: (portId, portSlug) => set({ currentPortId: portId, currentPortSlug: portSlug }),
      toggleDarkMode: () => set((s) => ({ darkMode: !s.darkMode })),
    }),
    {
      name: 'pn-crm-ui',
      partialize: (state) => ({
        sidebarCollapsed: state.sidebarCollapsed,
        currentPortId: state.currentPortId,
        currentPortSlug: state.currentPortSlug,
        darkMode: state.darkMode,
      }),
    },
  ),
);

// Alias for port-specific access
export const usePortStore = useUIStore;
```

**Step 32: TanStack Query provider**

```bash
pnpm add @tanstack/react-query @tanstack/react-query-devtools
```

**File:** `src/providers/query-provider.tsx`

```typescript
'use client';

import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
import { ReactQueryDevtools } from '@tanstack/react-query-devtools';
import { useState, type ReactNode } from 'react';

export function QueryProvider({ children }: { children: ReactNode }) {
  const [queryClient] = useState(
    () =>
      new QueryClient({
        defaultOptions: {
          queries: {
            staleTime: 30 * 1000,
            retry: 1,
            refetchOnWindowFocus: false,
          },
          mutations: {
            onError: (error) => {
              console.error('Mutation error:', error);
            },
          },
        },
      }),
  );

  return (
    <QueryClientProvider client={queryClient}>
      {children}
      {process.env.NODE_ENV === 'development' && <ReactQueryDevtools initialIsOpen={false} />}
    </QueryClientProvider>
  );
}
```

**Step 33: Base UI patterns**

**File:** `src/components/shared/page-header.tsx` — consistent page header with title, description, action buttons

**File:** `src/components/shared/empty-state.tsx` — "no data" pattern with icon, title, description, optional CTA

**File:** `src/components/shared/loading-skeleton.tsx` — reusable skeleton patterns (table, card, form)

**File:** `src/components/shared/confirmation-dialog.tsx` — destructive action confirmation using shadcn `AlertDialog`

**Step 34: Placeholder pages**

Create minimal placeholder pages for every route. Each renders `<PageHeader>` + `<EmptyState>` with "Coming in Layer X" message and correct breadcrumbs.

Pages under `src/app/(dashboard)/[portSlug]/`:

- `page.tsx` (dashboard)
- `clients/page.tsx`
- `interests/page.tsx`
- `berths/page.tsx`
- `expenses/page.tsx`
- `invoices/page.tsx`
- `documents/page.tsx`
- `email/page.tsx`
- `reminders/page.tsx`
- `reports/page.tsx`
- `settings/profile/page.tsx`
- `settings/notifications/page.tsx`
- `settings/calendar/page.tsx`
- `admin/page.tsx`
- `admin/users/page.tsx`
- `admin/roles/page.tsx`
- `admin/ports/page.tsx`
- `admin/audit/page.tsx`
- `admin/settings/page.tsx`
- `admin/webhooks/page.tsx`
- `admin/reports/page.tsx`
- `admin/templates/page.tsx`
- `admin/forms/page.tsx`
- `admin/tags/page.tsx`
- `admin/import/page.tsx`
- `admin/monitoring/page.tsx`
- `admin/backup/page.tsx`
- `admin/custom-fields/page.tsx`
- `admin/onboarding/page.tsx`

#### Afternoon: Security Baseline + Nginx + Verification (3 hours)

**Step 35: Nginx configuration**

**File:** `nginx/nginx.conf`

Full configuration matching `SECURITY-GUIDELINES.md` Section 6:

- TLS 1.3 only
- All security headers (HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, CSP, Permissions-Policy)
- Rate limiting zones: `auth` (5r/m), `general` (30r/s), `api` (60r/s), `upload` (10r/m)
- Proxy to `crm-app:3000`
- WebSocket upgrade for `/socket.io/`
- CORS for `/api/public/` (allow `portnimara.com` only)
- HTTP → HTTPS redirect
- Request body size limits (1MB JSON, 50MB uploads)

**Step 36: Constants file**

**File:** `src/lib/constants.ts`

```typescript
// Pipeline stages (from 09-BUSINESS-RULES.md)
export const PIPELINE_STAGES = [
  'open',
  'details_sent',
  'in_communication',
  'visited',
  'signed_eoi_nda',
  'ten_percent_deposit',
  'contract',
  'completed',
] as const;

export type PipelineStage = (typeof PIPELINE_STAGES)[number];

// Berth statuses
export const BERTH_STATUSES = [
  'available',
  'under_offer',
  'sold',
  'maintenance',
  'reserved',
] as const;
export type BerthStatus = (typeof BERTH_STATUSES)[number];

// Lead categories
export const LEAD_CATEGORIES = ['hot', 'warm', 'cold', 'dormant'] as const;
export type LeadCategory = (typeof LEAD_CATEGORIES)[number];

// Invoice statuses
export const INVOICE_STATUSES = ['draft', 'sent', 'paid', 'overdue', 'cancelled'] as const;
export type InvoiceStatus = (typeof INVOICE_STATUSES)[number];

// Expense categories
export const EXPENSE_CATEGORIES = [
  'food_beverage',
  'transportation',
  'accommodation',
  'supplies',
  'maintenance',
  'utilities',
  'professional_services',
  'entertainment',
  'marketing',
  'office',
  'other',
] as const;
export type ExpenseCategory = (typeof EXPENSE_CATEGORIES)[number];

// Document types
export const DOCUMENT_TYPES = ['eoi', 'nda', 'contract', 'addendum', 'other'] as const;
export type DocumentType = (typeof DOCUMENT_TYPES)[number];

// Reminder priorities
export const REMINDER_PRIORITIES = ['low', 'normal', 'high', 'urgent'] as const;
export type ReminderPriority = (typeof REMINDER_PRIORITIES)[number];

// Client sources
export const CLIENT_SOURCES = [
  'website',
  'manual',
  'referral',
  'broker',
  'event',
  'other',
] as const;
export type ClientSource = (typeof CLIENT_SOURCES)[number];

// Notification types
export const NOTIFICATION_TYPES = [
  'reminder_due',
  'reminder_overdue',
  'new_registration',
  'eoi_signature_event',
  'new_email',
  'duplicate_alert',
  'invoice_overdue',
  'waiting_list',
  'system_alert',
  'follow_up_created',
  'tenure_expiring',
] as const;
export type NotificationType = (typeof NOTIFICATION_TYPES)[number];

// File MIME type allowlist (SECURITY-GUIDELINES.md Section 10)
export const ALLOWED_MIME_TYPES = new Set([
  'image/jpeg',
  'image/png',
  'image/gif',
  'image/webp',
  'application/pdf',
  'application/msword',
  'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
  'application/vnd.ms-excel',
  'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
]);

export const MAX_FILE_SIZE = 50 * 1024 * 1024; // 50MB
export const MAX_JSON_BODY_SIZE = 1 * 1024 * 1024; // 1MB
export const PRESIGNED_URL_EXPIRY = 900; // 15 minutes
```

**Step 37: Custom server entry point**

**File:** `src/server.ts`

This is the custom entry point that boots Next.js + Socket.io together in development. In production, the standalone Next.js `server.js` handles HTTP, and `crm-worker` handles BullMQ separately.

```typescript
import { createServer } from 'node:http';
import next from 'next';

import { initSocketServer } from '@/lib/socket/server';
import { registerRecurringJobs } from '@/lib/queue/scheduler';
import { ensureBucket } from '@/lib/minio';
import { logger } from '@/lib/logger';

const dev = process.env.NODE_ENV !== 'production';
const hostname = 'localhost';
const port = parseInt(process.env.PORT || '3000', 10);

async function main() {
  const app = next({ dev, hostname, port });
  const handle = app.getRequestHandler();

  await app.prepare();

  const httpServer = createServer(handle);

  // Initialize Socket.io on the same HTTP server
  initSocketServer(httpServer);
  logger.info('Socket.io initialized');

  // Ensure MinIO bucket exists
  await ensureBucket();
  logger.info('MinIO bucket verified');

  // Register recurring BullMQ jobs (dev only — production uses crm-worker)
  if (dev) {
    await registerRecurringJobs();
    // Import workers to start processing
    await import('@/lib/queue/workers/email');
    await import('@/lib/queue/workers/documents');
    await import('@/lib/queue/workers/notifications');
    await import('@/lib/queue/workers/maintenance');
    // ... other workers
    logger.info('BullMQ workers started (dev mode)');
  }

  httpServer.listen(port, () => {
    logger.info({ port, dev }, `Server ready at http://${hostname}:${port}`);
  });
}

main().catch((err) => {
  logger.fatal(err, 'Failed to start server');
  process.exit(1);
});
```

**Step 38: Final verification**

Run the full verification checklist:

```bash
# Type check
pnpm tsc --noEmit

# Lint
pnpm eslint src/

# Docker
docker compose -f docker-compose.yml -f docker-compose.dev.yml up --build

# Verify DB tables
pnpm drizzle-kit studio  # Visual inspection of all 49 tables

# Seed
pnpm tsx src/lib/db/seed.ts

# Start dev server
pnpm tsx src/server.ts

# Verify:
# - Login page renders at /login
# - Can log in with seeded admin
# - Dashboard layout renders with sidebar
# - All placeholder pages accessible
# - Socket.io connects (check browser console)
# - BullMQ queues initialized (check server logs)
# - Health endpoint returns 200 at /api/health
```

---

## 3. Code-Ready Details

### API Route Middleware Chain

Every API route under `/api/v1/` follows this pattern:

```
Request → Next.js middleware (session cookie check)
       → withAuth() (load user, port, permissions)
       → withPermission(resource, action) (RBAC check)
       → rate limit check (Redis sliding window)
       → Zod input validation
       → handler (business logic)
       → audit log write
       → response
```

### State Management Per Page

| Page           | Server State (TanStack Query)   | Client State (Zustand)         | URL State                |
| -------------- | ------------------------------- | ------------------------------ | ------------------------ |
| Dashboard      | `['dashboard', portId]`         | `sidebarCollapsed`             | none                     |
| Client List    | `['clients', portId, filters]`  | `sidebarCollapsed`             | `?search=&source=&page=` |
| Client Detail  | `['clients', portId, clientId]` | `activeTab`                    | `?tab=overview`          |
| All list pages | `[entity, portId, filters]`     | `sidebarCollapsed`, `viewMode` | `?page=&sort=&filter=`   |

### shadcn Components Used in L0

| Component         | Where Used                                            |
| ----------------- | ----------------------------------------------------- |
| `Button`          | Login form, sidebar nav, topbar actions, page headers |
| `Input`, `Label`  | Login form, password forms                            |
| `Card`            | Login page, empty states                              |
| `Avatar`, `Badge` | Sidebar user footer, topbar                           |
| `DropdownMenu`    | Topbar "+ New", user menu                             |
| `Sheet`           | Mobile sidebar drawer                                 |
| `ScrollArea`      | Sidebar navigation                                    |
| `Separator`       | Sidebar sections                                      |
| `Tooltip`         | Collapsed sidebar icons                               |
| `Breadcrumb`      | All pages (auto-generated)                            |
| `Skeleton`        | Loading states                                        |
| `AlertDialog`     | Confirmation dialogs                                  |
| `Sonner` (Toast)  | Notifications, errors                                 |
| `Form`            | Login, set-password, reset-password                   |

### CSS / Tailwind Patterns

- Sidebar: `w-64 bg-[#1e2844] text-sidebar-text` (expanded), `w-16` (collapsed)
- Content area: `bg-background` (white light mode, `#131a2c` dark mode)
- Page headers: `text-2xl font-semibold text-text-primary`
- Cards: `bg-card rounded-lg border shadow-sm`
- Status badges: `bg-success-bg text-success border-success-border` (and warning/error/info variants)
- Focus rings: `ring-2 ring-brand ring-offset-2`
- Transitions: sidebar collapse `transition-all duration-200`, page transitions via `motion-safe:animate-in`

---

## 4. Acceptance Criteria

1. `docker compose -f docker-compose.yml -f docker-compose.dev.yml up` starts postgres, redis, and crm-app successfully
2. All 49 database tables exist with correct schemas, constraints, indexes, and `pgcrypto` extension
3. Seed data inserted: 1 port, 5 system roles, 1 super admin user
4. Login page renders at `/login` with Port Nimara branding (dark navy, PN logo)
5. Can log in with super admin credentials → redirected to `/(dashboard)/port-nimara/`
6. Session persists across page refreshes (httpOnly cookie, Redis-backed)
7. Protected routes redirect to `/login` when not authenticated
8. API routes return 401 JSON when not authenticated
9. Sidebar renders all navigation sections with correct icons
10. All ~29 placeholder pages load with correct breadcrumbs and "Coming in Layer X" empty states
11. Port switcher hidden (single port mode) — visible only with 2+ ports
12. Socket.io connects on login, auto-joins `port:{portId}` and `user:{userId}` rooms
13. All 10 BullMQ queues initialized (visible in server logs)
14. All 13 recurring jobs registered (visible in server logs)
15. MinIO bucket exists and accessible (`/api/health` reports `minio: ok`)
16. Health endpoint at `/api/health` returns `{ status: "healthy", checks: { postgres: "ok", redis: "ok", minio: "ok" } }`
17. Structured logging active (pino JSON output in production, pretty-printed in dev)
18. Nginx serves over HTTPS with all security headers (HSTS, CSP, X-Frame-Options, etc.)
19. Application-level rate limiter functional (Redis sliding window)
20. ESLint passes with zero errors, TypeScript strict mode passes with zero errors
21. No secrets in source code — `.env.example` has placeholders only, pre-commit hook catches accidental commits
22. Audit log middleware functional — login event written to `audit_logs` table
23. Zod env validation fails fast on missing/invalid environment variables
24. Dark mode toggle in user menu switches theme (CSS variables swap)
25. Mobile responsive: sidebar collapses to hamburger drawer below 768px

---

## 5. Self-Review Checklist

Before calling Layer 0 done:

- [ ] **Security:** All env vars externalized, no hardcoded secrets, pgcrypto enabled, TLS 1.3 configured
- [ ] **Auth:** Better Auth + Redis sessions, Argon2id hashing, 12-char minimum password, CSRF protection, rate-limited login
- [ ] **Port scoping:** Every query helper includes `portId`, middleware extracts port from session context
- [ ] **RBAC:** 5 system roles match `10-AUTH-AND-PERMISSIONS.md`, permission check helper works with JSON permission map
- [ ] **Audit:** `createAuditLog()` called on login/logout, sensitive fields masked, append-only
- [ ] **Error handling:** `AppError` hierarchy, Zod validation errors formatted as `{ error, details }`, no stack traces leak to client
- [ ] **Rate limiting:** Both nginx (per-IP) and application (per-user Redis sliding window) active
- [ ] **Type safety:** Zero `any` types, strict mode, all Drizzle schemas typed, all API responses typed
- [ ] **Docker:** Multi-stage build, non-root user, health checks on all services, no exposed internal ports
- [ ] **Logging:** Pino with redaction rules, no PII in logs, log levels configurable via env
- [ ] **Real-time:** Socket.io connects, authenticates, joins rooms, idle timeout configured
- [ ] **Background jobs:** All 10 queues created, all 13 recurring jobs registered, exponential backoff configured
- [ ] **UI:** Sidebar matches mockup-A design, Inter font loaded, design tokens applied, responsive breakpoints working
- [ ] **Developer experience:** ESLint + Prettier + lint-staged + husky, TypeScript strict, hot reload works, Drizzle Studio accessible
- [ ] **Schema completeness:** All 49 tables from `07-DATABASE-SCHEMA.md` present with correct columns, types, constraints, indexes, and Drizzle relation definitions

---

## Estimated File Count

Layer 0 produces approximately **85–95 files**:

- Config files: ~10 (tsconfig, eslint, prettier, drizzle, next.config, docker, nginx, husky, lint-staged, .env.example)
- Schema files: 12 (10 domain + relations + index)
- Auth: 4 (server, client, permissions, api catch-all)
- Infrastructure: 8 (redis, rate-limit, logger, errors, audit, minio, env, constants)
- Socket.io: 4 (server, events, rooms, provider)
- BullMQ: 13 (index, scheduler, 10 worker stubs, types)
- Layout components: 5 (sidebar, topbar, port-switcher, breadcrumbs, dashboard layout)
- Shared components: 4 (page-header, empty-state, loading-skeleton, confirmation-dialog)
- Providers: 3 (query, socket, port)
- Stores: 1 (ui-store)
- Pages: ~32 (3 auth + 29 placeholder dashboard pages + not-found)
- Server: 1 (custom server.ts)
- Seed: 1
- API routes: 2 (auth catch-all, health)

---

## Codex Addenda — Merged from Competing Plan Review

The following items are cherry-picked from the Codex competing plan and should be incorporated during implementation. They represent architectural patterns and corrections that complement the Claude Code base plan.

### 1. Execution Spine Framing

Frame L0 not as "setup work" but as building the **execution spine** that all subsequent layers hang from. The reusable contracts produced here — `defineRoute`, `RequestContext`, `requirePermission`, `auditLog`, `buildStorageKey`, queue registry, and socket emitter — are the multiplier for 250+ endpoints. Pages stay minimal until those contracts exist.

### 2. Table Count Correction

The locked schema defines **51 application tables** plus Better Auth-managed auth tables. Plans referencing "49 tables" should be corrected. The coding agent will drift if the count is wrong.

### 3. Session Storage Resolution

Standardize on **PostgreSQL as the Better Auth session source of truth**. Redis is for cache, rate limits, queues, and Socket.io only. This resolves the contradiction across foundation docs.

### 4. Health Response Schema

Add a typed health check response schema:

```ts
export const healthResponseSchema = z.object({
  status: z.enum(['healthy', 'degraded', 'down']),
  services: z.array(
    z.object({
      name: z.string(),
      status: z.enum(['healthy', 'degraded', 'down']),
      latencyMs: z.number().nullable(),
      detail: z.string().optional(),
    }),
  ),
});
```

### 5. Storage Key Builder Signature

Adopt Codex's explicit entity enum in `buildStorageKey`:

```ts
export function buildStorageKey(input: {
  portSlug: string;
  entity: 'clients' | 'expenses' | 'invoices' | 'documents' | 'general';
  entityId: string;
  extension: string;
}): string;
```

Storage keys use UUID filenames only: `{portSlug}/{entity}/{entityId}/{uuid}.{ext}`.

### 6. Graceful Degradation Edge Cases

- **Redis unavailable on boot:** App still starts, but queues, rate limiting, and sockets are marked degraded in health check.
- **MinIO unavailable on boot:** File-dependent routes are disabled via startup status, not silent failures.
- **Duplicate socket connections:** Beyond 10 per user are rejected.
- **Presigned URLs:** Expire after 15 minutes and are never cached client-side in persisted state.
- **User has no assigned ports:** Redirect to a blocked access page, not the dashboard.
- **One active port only:** Port switcher component never mounts.

### 7. Security: Queue Job Payloads

Never put secrets or raw credentials into BullMQ job payloads — enqueue record IDs only.

### 8. Docker Acceptance Criteria

`docker compose up` must start `crm-app`, `postgres`, `redis`, and `nginx` without manual patching. This should be verified as part of L0 acceptance.