docs: split CLAUDE.md into focused reference files

Move architecture, env vars, and deployment details into .claude/ subdocs
referenced via @-imports, keeping CLAUDE.md to commands and pointers only.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/ARCHITECTURE.md

@@ -0,0 +1,43 @@
+# Architecture
+
+**Sistem Desa Mandiri** is a village administration platform built on Next.js 14 (App Router) with PostgreSQL.
+
+## Key Layers
+
+- **`src/app/(application)/`** — Auth-protected pages grouped by feature (announcement, division, project, discussion, member, profile, home, group)
+- **`src/app/(auth)/`** — Login/register pages
+- **`src/app/api/`** — REST API endpoints; subdirectories map to resource types (`/api/announcement`, `/api/project`, `/api/task`, etc.). Mobile-specific endpoints live under `/api/mobile/`
+- **`src/module/`** — Business logic modules, one per feature (19 modules). Each module contains hooks, components, and API call functions for that domain
+- **`src/lib/`** — Shared utilities: Prisma client singleton (`prisma.ts`), Firebase init, route definitions (`routes.ts`), push notification hooks
+
+## Data Access
+
+All DB access goes through the Prisma client singleton in `src/lib/prisma.ts`. Schema at `prisma/schema.prisma` (40+ models). Migrations in `prisma/migrations/`.
+
+## State Management
+
+- **Hookstate** (`@hookstate/core` + `@hookstate/localstored`) — client-side global state with localStorage persistence
+- **Iron-session** — server-side session management / auth
+- **Jose** — JWT handling
+
+## UI Stack
+
+- **Mantine 7** — primary UI library (components, forms, modals, notifications, charts, dates)
+- **Tailwind CSS** — utility classes, used alongside Mantine
+- **PostCSS** — configured with Mantine preset (`postcss.config.mjs`)
+
+## Real-time & Notifications
+
+- **Firebase FCM** (`src/lib/firebase/`) — mobile push notifications
+- **Web Push + VAPID keys** (`src/lib/usePushNotifications.ts`) — browser push
+- **wibu-realtime** (custom library) — WebSocket-based real-time updates
+
+## User Roles
+
+Five roles with distinct access levels (see `PANDUAN PENGGUNAAN.md`):
+
+1. **Super Admin** — full system access
+2. **Admin Desa** — village-level administration
+3. **Ketua Divisi** — division leader
+4. **Anggota Divisi** — division member
+5. **Warga/Perangkat Desa** — village resident/official