chore: replace AI Coding Starter Kit references with archivmail project info

- CLAUDE.md: vollständig auf archivmail-Kontext umgeschrieben (Go/Xapian Stack, On-Premise Deploy, keine Supabase/Vercel)
- package.json: name und description auf archivmail aktualisiert

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

CLAUDE.md

@@ -1,66 +1,70 @@
-# AI Coding Starter Kit
+# archivmail
 
-> A Next.js template with an AI-powered development workflow using specialized skills for Requirements, Architecture, Frontend, Backend, QA, and Deployment.
+Selbst gehostetes Mail-Archiv-System. Go-Backend + Next.js-Frontend + PostgreSQL + Xapian.
 
 ## Tech Stack
 
-- **Framework:** Next.js 16 (App Router), TypeScript
-- **Styling:** Tailwind CSS + shadcn/ui (copy-paste components)
-- **Backend:** Supabase (PostgreSQL + Auth + Storage) - optional
-- **Deployment:** Vercel
-- **Validation:** Zod + react-hook-form
-- **State:** React useState / Context API
+- **Backend:** Go 1.23, CGO, Xapian (Volltext-Index)
+- **Frontend:** Next.js 16 (App Router), TypeScript, Tailwind CSS, shadcn/ui
+- **Datenbank:** PostgreSQL (pgx/v5)
+- **Deployment:** On-Premise (192.168.1.131), Systemd
+- **Auth:** JWT (httpOnly Cookie), bcrypt Cost 12
 
-## Project Structure
+## Projektstruktur
 
 ```
+cmd/archivmail/       CLI-Einstiegspunkt + Subkommandos
+config/               YAML-Konfiguration
+internal/
+  api/                HTTP-API + Handler
+  audit/              Audit-Log (PostgreSQL + Flat-File)
+  auth/               JWT-Authentifizierung
+  imap/               IMAP-Import, Scheduler, Store
+  index/              Xapian-Wrapper (CGO), Async Worker
+  smtpd/              Eingebetteter SMTP-Daemon
+  storage/            AES-256-GCM Dateispeicher + PostgreSQL-Metadaten
+  userstore/          Benutzerverwaltung
+pkg/mailparser/       RFC-2822 Parser, MBOX-Splitter
 src/
-  app/              Pages (Next.js App Router)
-  components/
-    ui/             shadcn/ui components (NEVER recreate these)
-  hooks/            Custom React hooks
-  lib/              Utilities (supabase.ts, utils.ts)
-features/           Feature specifications (PROJ-X-name.md)
-  INDEX.md          Feature status overview
-docs/
-  PRD.md            Product Requirements Document
-  production/       Production guides (Sentry, security, performance)
+  app/                Next.js Seiten (/, /search, /mail/[id], /admin, /imap)
+  components/         UI-Komponenten (shadcn/ui)
+  hooks/              useAuth
+  lib/                api.ts, auth-cache.ts
 ```
 
-## Development Workflow
-
-1. `/requirements` - Create feature spec from idea
-2. `/architecture` - Design tech architecture (PM-friendly, no code)
-3. `/frontend` - Build UI components (shadcn/ui first!)
-4. `/backend` - Build APIs, database, RLS policies
-5. `/qa` - Test against acceptance criteria + security audit
-6. `/deploy` - Deploy to Vercel + production-ready checks
-
-## Feature Tracking
-
-All features tracked in `features/INDEX.md`. Every skill reads it at start and updates it when done. Feature specs live in `features/PROJ-X-name.md`.
-
-## Key Conventions
-
-- **Feature IDs:** PROJ-1, PROJ-2, etc. (sequential)
-- **Commits:** `feat(PROJ-X): description`, `fix(PROJ-X): description`
-- **Single Responsibility:** One feature per spec file
-- **shadcn/ui first:** NEVER create custom versions of installed shadcn components
-- **Human-in-the-loop:** All workflows have user approval checkpoints
-
-## Build & Test Commands
+## Build & Deploy
 
 ```bash
-npm run dev        # Development server (localhost:3000)
-npm run build      # Production build
-npm run lint       # ESLint
-npm run start      # Production server
+# Backend (CGO + Xapian zwingend erforderlich)
+CGO_ENABLED=1 go build -tags xapian -buildvcs=false -o archivmail ./cmd/archivmail/
+
+# Frontend
+npm run build         # .next/standalone/ für Produktion
+
+# Auf Server deployen
+bash update.sh        # oder: curl ... | bash
 ```
 
-## Product Context
+## Konventionen
 
-@docs/PRD.md
+- **Commits:** `feat(PROJ-X): ...`, `fix(PROJ-X): ...`, `chore: ...`
+- **Feature-IDs:** PROJ-1, PROJ-2, … (nächste freie: PROJ-20)
+- **shadcn/ui:** Keine Custom-Versionen installierter Komponenten
+- **Kein Supabase, kein Vercel** – reines On-Premise-Deployment
 
-## Feature Overview
+## Wichtige Konfiguration (Server)
 
-@features/INDEX.md
+```
+/etc/archivmail/config.yml   Hauptkonfiguration
+/etc/archivmail/keyfile      AES-256 Schlüssel (32 Bytes, nie committen)
+/var/archivmail/store/       Verschlüsselter E-Mail-Speicher
+/var/archivmail/xapian/      Xapian-Index
+```
+
+## Dienste (Systemd)
+
+```bash
+systemctl status archivmail        # Go-Backend (Port 8080 + 2525)
+systemctl status archivmail-web    # Next.js-Frontend (Port 3000)
+journalctl -u archivmail -f
+```