diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..b4d31ef
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,24 @@
+# Discord Developer Portal / Bot
+DISCORD_TOKEN=BotTokenHere
+DISCORD_APP_ID=ApplicationIDHere
+
+# Optional: set for fast slash-command registration during development.
+# Empty = global commands, can take longer to propagate.
+DISCORD_GUILD_ID=OptionalTestGuildIDForFastCommandRegistration
+
+# Public channel for sanitized order overview. Leave empty if only the internal team should see order posts.
+DISCORD_PUBLIC_ORDER_CHANNEL_ID=PublicOrderChannelIDOptional
+
+# Private/internal channel for team operations. The bot posts buttons and warehouse checks here.
+DISCORD_INTERNAL_ORDER_CHANNEL_ID=PrivateTeamOrderChannelIDRequired
+
+# Optional audit/log channel for admin traceability.
+DISCORD_AUDIT_CHANNEL_ID=AuditLogChannelIDOptional
+
+# Comma-separated role IDs. Admin role can modify inventory and force status changes.
+DISCORD_ADMIN_ROLE_IDS=123456789012345678,234567890123456789
+
+# Comma-separated role IDs. Team role can see internal orders, accept/decline, check warehouse.
+DISCORD_TEAM_ROLE_IDS=345678901234567890
+
+DATABASE_PATH=orders.db
diff --git a/.gitea/workflows/registry.yml b/.gitea/workflows/registry.yml
new file mode 100644
index 0000000..3f0fca3
--- /dev/null
+++ b/.gitea/workflows/registry.yml
@@ -0,0 +1,51 @@
+name: release-tag
+on:
+  push:
+    branches:
+      - 'main'
+jobs:
+  release-image:
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_ORG: stadthilden
+      DOCKER_LATEST: latest
+      RUNNER_TOOL_CACHE: /toolcache
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker BuildX
+        uses: docker/setup-buildx-action@v2
+        with: # replace it with your local IP
+          config-inline: |
+            [registry."git.send.nrw"] 
+              http = true
+              insecure = true                        
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          registry: git.send.nrw # replace it with your local IP
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          
+      - name: Get Meta
+        id: meta
+        run: |
+          echo REPO_NAME=$(echo ${GITHUB_REPOSITORY} | awk -F"/" '{print $2}') >> $GITHUB_OUTPUT
+          echo REPO_VERSION=$(git describe --tags --always | sed 's/^v//') >> $GITHUB_OUTPUT                          
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: |
+            linux/amd64                                   
+          push: true
+          tags: | # replace it with your local IP and tags
+            git.send.nrw/${{ env.DOCKER_ORG }}/${{ steps.meta.outputs.REPO_NAME }}:${{ steps.meta.outputs.REPO_VERSION }}
+            git.send.nrw/${{ env.DOCKER_ORG }}/${{ steps.meta.outputs.REPO_NAME }}:${{ env.DOCKER_LATEST }}
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..2eab462
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,15 @@
+FROM golang:1.26-alpine AS build
+WORKDIR /src
+COPY go.mod go.sum* ./
+RUN go mod download
+COPY . .
+RUN go build -o /out/starauftrag-bot .
+
+FROM alpine:3.22S
+RUN adduser -D -H bot && mkdir /data && chown bot:bot /data
+USER bot
+WORKDIR /app
+COPY --from=build /out/starauftrag-bot /app/starauftrag-bot
+ENV DATABASE_PATH=/data/orders.db
+VOLUME ["/data"]
+ENTRYPOINT ["/app/starauftrag-bot"]
diff --git a/README.md b/README.md
index 2824ad0..e35d72f 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,160 @@
-# sftrading
+# Starauftrag Discord Bot (Go + SQLite)
 
+Produktionsnaher Discord-Bot für Lieferaufträge mit SQLite-Persistenz, Slash Commands, internen Team-Buttons, Audit-Log und privater Lagerverwaltung.
+
+## Kernidee
+
+- Endnutzer erstellen mit `/auftrag` einen Lieferauftrag.
+- Der öffentliche Auftragspost enthält nur auftragsbezogene Basisdaten.
+- Das Team erhält in einem privaten internen Channel denselben Auftrag plus Lagerprüfung.
+- Annahme/Ablehnung erfolgt ausschließlich im internen Channel per Button.
+- Lagerdaten werden nie an den Einreicher oder in öffentliche Posts ausgegeben.
+- Alle relevanten Änderungen werden in `order_events` auditiert.
+
+Discord Buttons sind Message Components mit `custom_id`; beim Klick erhält der Bot eine Component Interaction und ordnet sie damit wieder dem Auftrag zu.
+
+## Setup
+
+1. Discord Developer Portal: Bot erstellen, Token kopieren, Bot in deinen Server einladen.
+2. Bot-Berechtigungen:
+   - `Send Messages`
+   - `Use Slash Commands`
+   - `Read Message History`
+   - `Embed Links`
+   - `Create Public Threads` oder `Create Private Threads` je nach Channel-Einstellung
+   - `Send Messages in Threads`
+3. `.env.example` nach `.env` kopieren oder Umgebungsvariablen setzen.
+4. Starten:
+
+```bash
+go mod tidy
+go run .
+```
+
+Für schnelle Command-Updates in Entwicklung `DISCORD_GUILD_ID` setzen. Ohne Guild-ID werden Slash Commands global registriert, was länger dauern kann.
+
+## Wichtige Umgebungsvariablen
+
+```env
+DISCORD_TOKEN=...
+DISCORD_APP_ID=...
+DISCORD_GUILD_ID=...
+DISCORD_PUBLIC_ORDER_CHANNEL_ID=...
+DISCORD_INTERNAL_ORDER_CHANNEL_ID=...
+DISCORD_AUDIT_CHANNEL_ID=...
+DISCORD_ADMIN_ROLE_IDS=roleId1,roleId2
+DISCORD_TEAM_ROLE_IDS=roleId3,roleId4
+DATABASE_PATH=orders.db
+```
+
+`DISCORD_INTERNAL_ORDER_CHANNEL_ID` sollte ein privater Team-Channel sein. Nur dort erscheinen Lagerprüfung und Annahme-/Ablehnen-Buttons.
+
+## User Commands
+
+### `/auftrag`
+
+Erstellt einen Auftrag mit:
+
+- `ware`
+- `qualitaet` 0-1000
+- `menge` als Zahl
+- `einheit` `SCU` oder `Stück`
+- `frist` im Format `YYYY-MM-DD`
+- `lieferort`
+- `budget` in aUEC
+
+### `/auftrag_status id:<id>`
+
+Zeigt den Auftrag. Team/Admin sieht die interne Ansicht inklusive Lagerprüfung, normale Nutzer nur eigene Aufträge ohne Lagerdaten.
+
+### `/auftrag_liste status:<optional> limit:<optional>`
+
+Listet Aufträge. Team/Admin sieht zusätzlich interne Zuordnungen.
+
+### `/auftrag_abschliessen id:<id>`
+
+Einreicher, Annehmer oder Team/Admin können abschließen.
+
+### `/auftrag_abbrechen id:<id> grund:<optional>`
+
+Einreicher oder Team/Admin können abbrechen.
+
+### `/auftrag_nachricht id:<id> text:<text>`
+
+Leitet eine Nachricht per DM an Einreicher und Annehmer weiter und schreibt sie zusätzlich in den internen Auftragsthread.
+
+## Team/Admin Commands
+
+### `/auftrag_status_setzen`
+
+Team/Admin kann den Status manuell setzen:
+
+- `open`
+- `accepted`
+- `in_delivery`
+- `delivered`
+- `completed`
+- `declined`
+- `cancelled`
+
+## Lager Commands
+
+Nur Admins können Lagerbestände verändern. Team/Admin kann Lager prüfen und anzeigen.
+
+### `/lager_add`
+
+Fügt Bestand hinzu oder setzt ihn absolut.
+
+```text
+/lager_add ware:Gold qualitaet:900 menge:64 einheit:SCU ort:Orison modus:addieren
+/lager_add ware:Gold qualitaet:900 menge:100 einheit:SCU ort:Orison modus:setzen
+```
+
+### `/lager_remove`
+
+Reduziert Bestand. Der Bot verhindert negative Bestände.
+
+```text
+/lager_remove ware:Gold qualitaet:900 menge:10 einheit:SCU ort:Orison
+```
+
+### `/lager_liste`
+
+Zeigt interne Lagerbestände ephemeral an.
+
+```text
+/lager_liste suche:Gold limit:20
+```
+
+### `/lager_check`
+
+Prüft intern, ob eine Menge verfügbar ist.
+
+```text
+/lager_check ware:Gold qualitaet:900 menge:64 einheit:SCU
+```
+
+## Statusmodell
+
+```text
+open -> accepted -> in_delivery -> delivered -> completed
+       \-> cancelled
+open -> declined
+```
+
+## Datenbanktabellen
+
+- `orders`: Aufträge und Discord-Message-Referenzen
+- `inventory`: interne Lagerpositionen
+- `order_events`: Audit-Log für Aufträge und Lageränderungen
+
+SQLite wird mit WAL-Modus und `busy_timeout` betrieben, damit kleine produktive Deployments robuster laufen.
+
+## Produktionshinweise
+
+- Setze `DISCORD_INTERNAL_ORDER_CHANNEL_ID` auf einen strikt privaten Channel.
+- Gib Lager-Commands nur einer kleinen Admin-Rolle.
+- Sichere `orders.db` regelmäßig.
+- Führe den Bot als systemd-Service oder Container aus.
+- Aktiviere Monitoring für Logs und Neustarts.
+- Teste DMs: Manche Nutzer blockieren DMs von Servermitgliedern; der Bot loggt solche Fehler, kann sie aber nicht erzwingen.
diff --git a/config.go b/config.go
new file mode 100644
index 0000000..bf05d36
--- /dev/null
+++ b/config.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"log"
+	"os"
+	"strings"
+)
+
+type Config struct {
+	Token                  string
+	AppID                  string
+	GuildID                string
+	PublicOrderChannelID   string
+	InternalOrderChannelID string
+	AuditChannelID         string
+	AdminRoleIDs           []string
+	TeamRoleIDs            []string
+	DatabasePath           string
+}
+
+func loadConfig() Config {
+	cfg := Config{
+		Token:                  os.Getenv("DISCORD_TOKEN"),
+		AppID:                  os.Getenv("DISCORD_APP_ID"),
+		GuildID:                os.Getenv("DISCORD_GUILD_ID"),
+		PublicOrderChannelID:   getenv("DISCORD_PUBLIC_ORDER_CHANNEL_ID", os.Getenv("DISCORD_ORDER_CHANNEL_ID")),
+		InternalOrderChannelID: getenv("DISCORD_INTERNAL_ORDER_CHANNEL_ID", getenv("DISCORD_ORDER_CHANNEL_ID", "")),
+		AuditChannelID:         os.Getenv("DISCORD_AUDIT_CHANNEL_ID"),
+		AdminRoleIDs:           splitCSV(os.Getenv("DISCORD_ADMIN_ROLE_IDS")),
+		TeamRoleIDs:            splitCSV(os.Getenv("DISCORD_TEAM_ROLE_IDS")),
+		DatabasePath:           getenv("DATABASE_PATH", "orders.db"),
+	}
+	if cfg.Token == "" || cfg.AppID == "" || cfg.InternalOrderChannelID == "" {
+		log.Fatal("Bitte DISCORD_TOKEN, DISCORD_APP_ID und DISCORD_INTERNAL_ORDER_CHANNEL_ID setzen")
+	}
+	if len(cfg.AdminRoleIDs) == 0 {
+		log.Println("WARNUNG: DISCORD_ADMIN_ROLE_IDS ist leer. Admin-Kommandos sind nur fuer Server-Administratoren verfuegbar.")
+	}
+	return cfg
+}
+
+func getenv(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}
+
+func splitCSV(v string) []string {
+	var out []string
+	for _, p := range strings.Split(v, ",") {
+		p = strings.TrimSpace(p)
+		if p != "" {
+			out = append(out, p)
+		}
+	}
+	return out
+}
diff --git a/db.go b/db.go
new file mode 100644
index 0000000..804a058
--- /dev/null
+++ b/db.go
@@ -0,0 +1,400 @@
+package main
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"math"
+	"strings"
+	"time"
+
+	_ "github.com/glebarez/sqlite"
+)
+
+type Store struct{ db *sql.DB }
+
+func NewStore(path string) (*Store, error) {
+	db, err := sql.Open("sqlite", path)
+	if err != nil {
+		return nil, err
+	}
+	if _, err := db.Exec(`PRAGMA foreign_keys = ON; PRAGMA busy_timeout = 5000; PRAGMA journal_mode = WAL;`); err != nil {
+		return nil, err
+	}
+	s := &Store{db: db}
+	return s, s.migrate()
+}
+
+func (s *Store) Close() error { return s.db.Close() }
+
+func (s *Store) migrate() error {
+	_, err := s.db.Exec(`
+CREATE TABLE IF NOT EXISTS orders (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  submitter_id TEXT NOT NULL,
+  submitter_name TEXT NOT NULL,
+  acceptor_id TEXT DEFAULT '',
+  acceptor_name TEXT DEFAULT '',
+  commodity TEXT NOT NULL,
+  quality INTEGER NOT NULL CHECK(quality >= 0 AND quality <= 1000),
+  quantity TEXT NOT NULL DEFAULT '',
+  quantity_amount REAL NOT NULL DEFAULT 0,
+  quantity_unit TEXT NOT NULL DEFAULT '',
+  deadline TEXT NOT NULL,
+  delivery_place TEXT NOT NULL,
+  max_budget_auec INTEGER NOT NULL,
+  status TEXT NOT NULL,
+  channel_id TEXT DEFAULT '',
+  message_id TEXT DEFAULT '',
+  public_channel_id TEXT DEFAULT '',
+  public_message_id TEXT DEFAULT '',
+  internal_channel_id TEXT DEFAULT '',
+  internal_message_id TEXT DEFAULT '',
+  thread_id TEXT DEFAULT '',
+  last_feedback TEXT DEFAULT '',
+  created_at DATETIME NOT NULL,
+  updated_at DATETIME NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_orders_status ON orders(status);
+CREATE INDEX IF NOT EXISTS idx_orders_submitter ON orders(submitter_id);
+CREATE INDEX IF NOT EXISTS idx_orders_acceptor ON orders(acceptor_id);
+
+CREATE TABLE IF NOT EXISTS inventory (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  name TEXT NOT NULL,
+  normalized_name TEXT NOT NULL,
+  quality INTEGER NOT NULL CHECK(quality >= 0 AND quality <= 1000),
+  quantity_amount REAL NOT NULL CHECK(quantity_amount >= 0),
+  quantity_unit TEXT NOT NULL,
+  location TEXT DEFAULT '',
+  note TEXT DEFAULT '',
+  updated_by_id TEXT NOT NULL,
+  updated_by_name TEXT NOT NULL,
+  created_at DATETIME NOT NULL,
+  updated_at DATETIME NOT NULL,
+  UNIQUE(normalized_name, quality, quantity_unit, location)
+);
+CREATE INDEX IF NOT EXISTS idx_inventory_lookup ON inventory(normalized_name, quality, quantity_unit);
+
+CREATE TABLE IF NOT EXISTS order_events (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  order_id INTEGER,
+  actor_id TEXT NOT NULL,
+  actor_name TEXT NOT NULL,
+  event_type TEXT NOT NULL,
+  message TEXT NOT NULL,
+  created_at DATETIME NOT NULL,
+  FOREIGN KEY(order_id) REFERENCES orders(id) ON DELETE SET NULL
+);
+CREATE INDEX IF NOT EXISTS idx_order_events_order ON order_events(order_id);
+`)
+	if err != nil {
+		return err
+	}
+	return s.ensureColumns()
+}
+
+func (s *Store) ensureColumns() error {
+	columns := map[string]string{
+		"quantity_amount":     "ALTER TABLE orders ADD COLUMN quantity_amount REAL NOT NULL DEFAULT 0",
+		"quantity_unit":       "ALTER TABLE orders ADD COLUMN quantity_unit TEXT NOT NULL DEFAULT ''",
+		"public_channel_id":   "ALTER TABLE orders ADD COLUMN public_channel_id TEXT DEFAULT ''",
+		"public_message_id":   "ALTER TABLE orders ADD COLUMN public_message_id TEXT DEFAULT ''",
+		"internal_channel_id": "ALTER TABLE orders ADD COLUMN internal_channel_id TEXT DEFAULT ''",
+		"internal_message_id": "ALTER TABLE orders ADD COLUMN internal_message_id TEXT DEFAULT ''",
+		"thread_id":           "ALTER TABLE orders ADD COLUMN thread_id TEXT DEFAULT ''",
+	}
+	for col, stmt := range columns {
+		if !s.columnExists("orders", col) {
+			if _, err := s.db.Exec(stmt); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (s *Store) columnExists(table, column string) bool {
+	rows, err := s.db.Query(`PRAGMA table_info(` + table + `)`)
+	if err != nil {
+		return false
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var cid int
+		var name, typ string
+		var notnull int
+		var dflt any
+		var pk int
+		if rows.Scan(&cid, &name, &typ, &notnull, &dflt, &pk) == nil && name == column {
+			return true
+		}
+	}
+	return false
+}
+
+func normalizeName(v string) string { return strings.ToLower(strings.TrimSpace(v)) }
+
+func (s *Store) CreateOrder(o *Order, actorID, actorName string) (int64, error) {
+	now := time.Now().UTC()
+	tx, err := s.db.Begin()
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback()
+	res, err := tx.Exec(`INSERT INTO orders
+(submitter_id, submitter_name, commodity, quality, quantity, quantity_amount, quantity_unit, deadline, delivery_place, max_budget_auec, status, created_at, updated_at)
+VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+		o.SubmitterID, o.SubmitterName, o.Commodity, o.Quality, quantityString(o.QuantityAmount, o.QuantityUnit), o.QuantityAmount, o.QuantityUnit, o.Deadline, o.DeliveryPlace, o.MaxBudgetAUEC, StatusOpen, now, now)
+	if err != nil {
+		return 0, err
+	}
+	id, err := res.LastInsertId()
+	if err != nil {
+		return 0, err
+	}
+	if err := addEventTx(tx, id, actorID, actorName, EventOrderCreated, "Auftrag erstellt"); err != nil {
+		return 0, err
+	}
+	return id, tx.Commit()
+}
+
+func (s *Store) SetMessages(id int64, publicChannelID, publicMessageID, internalChannelID, internalMessageID, threadID string) error {
+	_, err := s.db.Exec(`UPDATE orders SET public_channel_id=?, public_message_id=?, internal_channel_id=?, internal_message_id=?, thread_id=?, channel_id=?, message_id=?, updated_at=? WHERE id=?`, publicChannelID, publicMessageID, internalChannelID, internalMessageID, threadID, internalChannelID, internalMessageID, time.Now().UTC(), id)
+	return err
+}
+
+func (s *Store) GetOrder(id int64) (*Order, error) {
+	row := s.db.QueryRow(`SELECT id, submitter_id, submitter_name, acceptor_id, acceptor_name, commodity, quality, quantity_amount, quantity_unit, deadline, delivery_place, max_budget_auec, status, public_channel_id, public_message_id, internal_channel_id, internal_message_id, thread_id, created_at, updated_at, last_feedback FROM orders WHERE id=?`, id)
+	return scanOrder(row)
+}
+
+func scanOrder(scanner interface{ Scan(dest ...any) error }) (*Order, error) {
+	o := &Order{}
+	if err := scanner.Scan(&o.ID, &o.SubmitterID, &o.SubmitterName, &o.AcceptorID, &o.AcceptorName, &o.Commodity, &o.Quality, &o.QuantityAmount, &o.QuantityUnit, &o.Deadline, &o.DeliveryPlace, &o.MaxBudgetAUEC, &o.Status, &o.PublicChannelID, &o.PublicMessageID, &o.InternalChannelID, &o.InternalMessageID, &o.ThreadID, &o.CreatedAt, &o.UpdatedAt, &o.LastFeedback); err != nil {
+		return nil, err
+	}
+	return o, nil
+}
+
+func (s *Store) ListOrders(status string, limit int) ([]Order, error) {
+	if limit <= 0 || limit > 50 {
+		limit = 10
+	}
+	query := `SELECT id, submitter_id, submitter_name, acceptor_id, acceptor_name, commodity, quality, quantity_amount, quantity_unit, deadline, delivery_place, max_budget_auec, status, public_channel_id, public_message_id, internal_channel_id, internal_message_id, thread_id, created_at, updated_at, last_feedback FROM orders`
+	args := []any{}
+	if status != "" {
+		query += ` WHERE status=?`
+		args = append(args, status)
+	}
+	query += ` ORDER BY created_at DESC LIMIT ?`
+	args = append(args, limit)
+	rows, err := s.db.Query(query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []Order
+	for rows.Next() {
+		o, err := scanOrder(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *o)
+	}
+	return out, rows.Err()
+}
+
+func (s *Store) AcceptOrder(id int64, userID, userName string) (*Order, error) {
+	tx, err := s.db.Begin()
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback()
+	res, err := tx.Exec(`UPDATE orders SET status=?, acceptor_id=?, acceptor_name=?, updated_at=? WHERE id=? AND status=?`, StatusAccepted, userID, userName, time.Now().UTC(), id, StatusOpen)
+	if err != nil {
+		return nil, err
+	}
+	n, _ := res.RowsAffected()
+	if n == 0 {
+		return nil, errors.New("auftrag ist nicht mehr offen")
+	}
+	if err := addEventTx(tx, id, userID, userName, EventOrderAccepted, "Auftrag angenommen"); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, err
+	}
+	return s.GetOrder(id)
+}
+
+func (s *Store) DeclineOrder(id int64, userID, userName, feedback string) (*Order, error) {
+	tx, err := s.db.Begin()
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback()
+	res, err := tx.Exec(`UPDATE orders SET status=?, last_feedback=?, updated_at=? WHERE id=? AND status=?`, StatusDeclined, feedback, time.Now().UTC(), id, StatusOpen)
+	if err != nil {
+		return nil, err
+	}
+	n, _ := res.RowsAffected()
+	if n == 0 {
+		return nil, errors.New("auftrag ist nicht mehr offen")
+	}
+	if err := addEventTx(tx, id, userID, userName, EventOrderDeclined, feedback); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, err
+	}
+	return s.GetOrder(id)
+}
+
+func (s *Store) SetStatus(id int64, status, feedback, actorID, actorName string) (*Order, error) {
+	tx, err := s.db.Begin()
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback()
+	res, err := tx.Exec(`UPDATE orders SET status=?, last_feedback=?, updated_at=? WHERE id=?`, status, feedback, time.Now().UTC(), id)
+	if err != nil {
+		return nil, err
+	}
+	n, _ := res.RowsAffected()
+	if n == 0 {
+		return nil, sql.ErrNoRows
+	}
+	if err := addEventTx(tx, id, actorID, actorName, EventOrderStatus, fmt.Sprintf("Status auf %s gesetzt: %s", status, feedback)); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, err
+	}
+	return s.GetOrder(id)
+}
+
+func (s *Store) AddEvent(orderID int64, actorID, actorName, eventType, message string) error {
+	_, err := s.db.Exec(`INSERT INTO order_events(order_id, actor_id, actor_name, event_type, message, created_at) VALUES (?, ?, ?, ?, ?, ?)`, nullableOrderID(orderID), actorID, actorName, eventType, message, time.Now().UTC())
+	return err
+}
+
+func addEventTx(tx *sql.Tx, orderID int64, actorID, actorName, eventType, message string) error {
+	_, err := tx.Exec(`INSERT INTO order_events(order_id, actor_id, actor_name, event_type, message, created_at) VALUES (?, ?, ?, ?, ?, ?)`, nullableOrderID(orderID), actorID, actorName, eventType, message, time.Now().UTC())
+	return err
+}
+
+func nullableOrderID(id int64) any {
+	if id <= 0 {
+		return nil
+	}
+	return id
+}
+
+func (s *Store) UpsertInventory(item InventoryItem, delta bool) (*InventoryItem, error) {
+	now := time.Now().UTC()
+	item.NormalizedName = normalizeName(item.Name)
+	tx, err := s.db.Begin()
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback()
+	var existing InventoryItem
+	err = tx.QueryRow(`SELECT id, name, normalized_name, quality, quantity_amount, quantity_unit, location, note, updated_by_id, updated_by_name, created_at, updated_at FROM inventory WHERE normalized_name=? AND quality=? AND quantity_unit=? AND location=?`, item.NormalizedName, item.Quality, item.QuantityUnit, item.Location).Scan(&existing.ID, &existing.Name, &existing.NormalizedName, &existing.Quality, &existing.QuantityAmount, &existing.QuantityUnit, &existing.Location, &existing.Note, &existing.UpdatedByID, &existing.UpdatedByName, &existing.CreatedAt, &existing.UpdatedAt)
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return nil, err
+	}
+	if errors.Is(err, sql.ErrNoRows) {
+		_, err = tx.Exec(`INSERT INTO inventory(name, normalized_name, quality, quantity_amount, quantity_unit, location, note, updated_by_id, updated_by_name, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`, item.Name, item.NormalizedName, item.Quality, item.QuantityAmount, item.QuantityUnit, item.Location, item.Note, item.UpdatedByID, item.UpdatedByName, now, now)
+	} else {
+		newQty := item.QuantityAmount
+		if delta {
+			newQty = existing.QuantityAmount + item.QuantityAmount
+		}
+		if newQty < 0 {
+			return nil, errors.New("lagerbestand darf nicht negativ werden")
+		}
+		_, err = tx.Exec(`UPDATE inventory SET name=?, quantity_amount=?, note=?, updated_by_id=?, updated_by_name=?, updated_at=? WHERE id=?`, item.Name, newQty, item.Note, item.UpdatedByID, item.UpdatedByName, now, existing.ID)
+	}
+	if err != nil {
+		return nil, err
+	}
+	if err := addEventTx(tx, 0, item.UpdatedByID, item.UpdatedByName, EventInventoryChanged, fmt.Sprintf("Lager %s Q%d %s %s", item.Name, item.Quality, formatAmount(item.QuantityAmount), item.QuantityUnit)); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(); err != nil {
+		return nil, err
+	}
+	return s.GetInventoryByKey(item.NormalizedName, item.Quality, item.QuantityUnit, item.Location)
+}
+
+func (s *Store) GetInventoryByKey(normalized string, quality int, unit, location string) (*InventoryItem, error) {
+	row := s.db.QueryRow(`SELECT id, name, normalized_name, quality, quantity_amount, quantity_unit, location, note, updated_by_id, updated_by_name, created_at, updated_at FROM inventory WHERE normalized_name=? AND quality=? AND quantity_unit=? AND location=?`, normalized, quality, unit, location)
+	return scanInventory(row)
+}
+
+func scanInventory(scanner interface{ Scan(dest ...any) error }) (*InventoryItem, error) {
+	it := &InventoryItem{}
+	if err := scanner.Scan(&it.ID, &it.Name, &it.NormalizedName, &it.Quality, &it.QuantityAmount, &it.QuantityUnit, &it.Location, &it.Note, &it.UpdatedByID, &it.UpdatedByName, &it.CreatedAt, &it.UpdatedAt); err != nil {
+		return nil, err
+	}
+	return it, nil
+}
+
+func (s *Store) ListInventory(query string, limit int) ([]InventoryItem, error) {
+	if limit <= 0 || limit > 50 {
+		limit = 20
+	}
+	q := `SELECT id, name, normalized_name, quality, quantity_amount, quantity_unit, location, note, updated_by_id, updated_by_name, created_at, updated_at FROM inventory`
+	args := []any{}
+	if strings.TrimSpace(query) != "" {
+		q += ` WHERE normalized_name LIKE ? OR location LIKE ?`
+		like := "%" + normalizeName(query) + "%"
+		args = append(args, like, like)
+	}
+	q += ` ORDER BY normalized_name, quality DESC LIMIT ?`
+	args = append(args, limit)
+	rows, err := s.db.Query(q, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []InventoryItem
+	for rows.Next() {
+		it, err := scanInventory(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *it)
+	}
+	return out, rows.Err()
+}
+
+func (s *Store) FindInventoryForOrder(o *Order) ([]InventoryMatch, float64, error) {
+	rows, err := s.db.Query(`SELECT id, name, normalized_name, quality, quantity_amount, quantity_unit, location, note, updated_by_id, updated_by_name, created_at, updated_at FROM inventory WHERE normalized_name=? AND quality>=? AND quantity_unit=? ORDER BY quality DESC, quantity_amount DESC`, normalizeName(o.Commodity), o.Quality, o.QuantityUnit)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer rows.Close()
+	var matches []InventoryMatch
+	var total float64
+	for rows.Next() {
+		it, err := scanInventory(rows)
+		if err != nil {
+			return nil, 0, err
+		}
+		total += it.QuantityAmount
+		matches = append(matches, InventoryMatch{Item: *it, RequestedQuantity: o.QuantityAmount, Available: it.QuantityAmount >= o.QuantityAmount})
+	}
+	return matches, total, rows.Err()
+}
+
+func quantityString(amount float64, unit string) string {
+	return fmt.Sprintf("%s %s", formatAmount(amount), unit)
+}
+func formatAmount(v float64) string {
+	if math.Abs(v-math.Round(v)) < 0.00001 {
+		return fmt.Sprintf("%.0f", v)
+	}
+	return fmt.Sprintf("%.2f", v)
+}
diff --git a/discord.go b/discord.go
new file mode 100644
index 0000000..13c31ef
--- /dev/null
+++ b/discord.go
@@ -0,0 +1,615 @@
+package main
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"log"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+type Bot struct {
+	cfg   Config
+	store *Store
+	dg    *discordgo.Session
+}
+
+func NewBot(cfg Config, store *Store) (*Bot, error) {
+	dg, err := discordgo.New("Bot " + cfg.Token)
+	if err != nil {
+		return nil, err
+	}
+	dg.Identify.Intents = discordgo.IntentsGuilds | discordgo.IntentsGuildMessages | discordgo.IntentsGuildMembers | discordgo.IntentsDirectMessages
+	b := &Bot{cfg: cfg, store: store, dg: dg}
+	dg.AddHandler(b.onReady)
+	dg.AddHandler(b.onInteraction)
+	return b, nil
+}
+
+func (b *Bot) Start() error {
+	if err := b.dg.Open(); err != nil {
+		return err
+	}
+	return b.registerCommands()
+}
+
+func (b *Bot) Stop() { _ = b.dg.Close() }
+
+func (b *Bot) onReady(s *discordgo.Session, r *discordgo.Ready) {
+	log.Println("Bot ist online als", r.User.String())
+}
+
+func (b *Bot) registerCommands() error {
+	commands := []*discordgo.ApplicationCommand{
+		{
+			Name: "auftrag", Description: "Erstellt einen Lieferauftrag",
+			Options: []*discordgo.ApplicationCommandOption{
+				{Name: "ware", Description: "Commodity oder Item", Type: discordgo.ApplicationCommandOptionString, Required: true},
+				{Name: "qualitaet", Description: "Qualität 0-1000", Type: discordgo.ApplicationCommandOptionInteger, Required: true, MinValue: ptrFloat(0), MaxValue: float64(1000)},
+				{Name: "menge", Description: "Menge als Zahl", Type: discordgo.ApplicationCommandOptionNumber, Required: true, MinValue: ptrFloat(0.0001)},
+				{Name: "einheit", Description: "SCU für Commodities, Stück für Items", Type: discordgo.ApplicationCommandOptionString, Required: true, Choices: []*discordgo.ApplicationCommandOptionChoice{{Name: "SCU", Value: "SCU"}, {Name: "Stück", Value: "Stück"}}},
+				{Name: "frist", Description: "Datum im Format YYYY-MM-DD", Type: discordgo.ApplicationCommandOptionString, Required: true},
+				{Name: "lieferort", Description: "Liefer-Ort als Freitext", Type: discordgo.ApplicationCommandOptionString, Required: true},
+				{Name: "budget", Description: "Maximales Budget in aUEC", Type: discordgo.ApplicationCommandOptionInteger, Required: true, MinValue: ptrFloat(0)},
+			},
+		},
+		{Name: "auftrag_status", Description: "Zeigt einen Auftrag", Options: []*discordgo.ApplicationCommandOption{{Name: "id", Description: "Auftrags-ID", Type: discordgo.ApplicationCommandOptionInteger, Required: true}}},
+		{Name: "auftrag_liste", Description: "Listet Aufträge", Options: []*discordgo.ApplicationCommandOption{{Name: "status", Description: "Optionaler Status", Type: discordgo.ApplicationCommandOptionString, Required: false, Choices: statusChoices()}, {Name: "limit", Description: "Maximal 50", Type: discordgo.ApplicationCommandOptionInteger, Required: false, MinValue: ptrFloat(1), MaxValue: float64(50)}}},
+		{Name: "auftrag_abschliessen", Description: "Markiert einen Auftrag als abgeschlossen", Options: []*discordgo.ApplicationCommandOption{{Name: "id", Description: "Auftrags-ID", Type: discordgo.ApplicationCommandOptionInteger, Required: true}}},
+		{Name: "auftrag_status_setzen", Description: "Admin/Team: setzt den Status eines Auftrags", Options: []*discordgo.ApplicationCommandOption{{Name: "id", Description: "Auftrags-ID", Type: discordgo.ApplicationCommandOptionInteger, Required: true}, {Name: "status", Description: "Neuer Status", Type: discordgo.ApplicationCommandOptionString, Required: true, Choices: statusChoices()}, {Name: "notiz", Description: "Interne Notiz", Type: discordgo.ApplicationCommandOptionString, Required: false}}},
+		{Name: "auftrag_abbrechen", Description: "Bricht einen Auftrag ab", Options: []*discordgo.ApplicationCommandOption{{Name: "id", Description: "Auftrags-ID", Type: discordgo.ApplicationCommandOptionInteger, Required: true}, {Name: "grund", Description: "Optionaler Grund", Type: discordgo.ApplicationCommandOptionString, Required: false}}},
+		{Name: "auftrag_nachricht", Description: "Sendet eine Nachricht an Einreicher und Annehmer", Options: []*discordgo.ApplicationCommandOption{{Name: "id", Description: "Auftrags-ID", Type: discordgo.ApplicationCommandOptionInteger, Required: true}, {Name: "text", Description: "Nachricht", Type: discordgo.ApplicationCommandOptionString, Required: true}}},
+		{Name: "lager_add", Description: "Admin: Lagerbestand hinzufügen oder Bestand setzen", Options: []*discordgo.ApplicationCommandOption{{Name: "ware", Description: "Commodity oder Item", Type: discordgo.ApplicationCommandOptionString, Required: true}, {Name: "qualitaet", Description: "Qualität 0-1000", Type: discordgo.ApplicationCommandOptionInteger, Required: true, MinValue: ptrFloat(0), MaxValue: float64(1000)}, {Name: "menge", Description: "Menge als Zahl", Type: discordgo.ApplicationCommandOptionNumber, Required: true}, {Name: "einheit", Description: "SCU oder Stück", Type: discordgo.ApplicationCommandOptionString, Required: true, Choices: []*discordgo.ApplicationCommandOptionChoice{{Name: "SCU", Value: "SCU"}, {Name: "Stück", Value: "Stück"}}}, {Name: "ort", Description: "Lagerort", Type: discordgo.ApplicationCommandOptionString, Required: false}, {Name: "notiz", Description: "Interne Notiz", Type: discordgo.ApplicationCommandOptionString, Required: false}, {Name: "modus", Description: "addiert oder setzt Bestand", Type: discordgo.ApplicationCommandOptionString, Required: false, Choices: []*discordgo.ApplicationCommandOptionChoice{{Name: "addieren", Value: "add"}, {Name: "setzen", Value: "set"}}}}},
+		{Name: "lager_remove", Description: "Admin: Lagerbestand reduzieren", Options: []*discordgo.ApplicationCommandOption{{Name: "ware", Description: "Commodity oder Item", Type: discordgo.ApplicationCommandOptionString, Required: true}, {Name: "qualitaet", Description: "Qualität 0-1000", Type: discordgo.ApplicationCommandOptionInteger, Required: true, MinValue: ptrFloat(0), MaxValue: float64(1000)}, {Name: "menge", Description: "Menge als Zahl", Type: discordgo.ApplicationCommandOptionNumber, Required: true, MinValue: ptrFloat(0.0001)}, {Name: "einheit", Description: "SCU oder Stück", Type: discordgo.ApplicationCommandOptionString, Required: true, Choices: []*discordgo.ApplicationCommandOptionChoice{{Name: "SCU", Value: "SCU"}, {Name: "Stück", Value: "Stück"}}}, {Name: "ort", Description: "Lagerort", Type: discordgo.ApplicationCommandOptionString, Required: false}, {Name: "notiz", Description: "Interne Notiz", Type: discordgo.ApplicationCommandOptionString, Required: false}}},
+		{Name: "lager_liste", Description: "Admin/Team: zeigt internes Lager", Options: []*discordgo.ApplicationCommandOption{{Name: "suche", Description: "Ware oder Ort", Type: discordgo.ApplicationCommandOptionString, Required: false}, {Name: "limit", Description: "Maximal 50", Type: discordgo.ApplicationCommandOptionInteger, Required: false, MinValue: ptrFloat(1), MaxValue: float64(50)}}},
+		{Name: "lager_check", Description: "Admin/Team: prüft Lagerbestand für Ware", Options: []*discordgo.ApplicationCommandOption{{Name: "ware", Description: "Commodity oder Item", Type: discordgo.ApplicationCommandOptionString, Required: true}, {Name: "qualitaet", Description: "Mindestqualität 0-1000", Type: discordgo.ApplicationCommandOptionInteger, Required: true, MinValue: ptrFloat(0), MaxValue: float64(1000)}, {Name: "menge", Description: "Benötigte Menge", Type: discordgo.ApplicationCommandOptionNumber, Required: true, MinValue: ptrFloat(0.0001)}, {Name: "einheit", Description: "SCU oder Stück", Type: discordgo.ApplicationCommandOptionString, Required: true, Choices: []*discordgo.ApplicationCommandOptionChoice{{Name: "SCU", Value: "SCU"}, {Name: "Stück", Value: "Stück"}}}}},
+	}
+	for _, cmd := range commands {
+		if _, err := b.dg.ApplicationCommandCreate(b.cfg.AppID, b.cfg.GuildID, cmd); err != nil {
+			return fmt.Errorf("command %s: %w", cmd.Name, err)
+		}
+	}
+	return nil
+}
+
+func ptrFloat(v float64) *float64 { return &v }
+func statusChoices() []*discordgo.ApplicationCommandOptionChoice {
+	return []*discordgo.ApplicationCommandOptionChoice{{Name: StatusOpen, Value: StatusOpen}, {Name: StatusAccepted, Value: StatusAccepted}, {Name: StatusInDelivery, Value: StatusInDelivery}, {Name: StatusDelivered, Value: StatusDelivered}, {Name: StatusCompleted, Value: StatusCompleted}, {Name: StatusDeclined, Value: StatusDeclined}, {Name: StatusCancelled, Value: StatusCancelled}}
+}
+
+func (b *Bot) onInteraction(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	switch i.Type {
+	case discordgo.InteractionApplicationCommand:
+		b.handleCommand(s, i)
+	case discordgo.InteractionMessageComponent:
+		b.handleButton(s, i)
+	}
+}
+
+func (b *Bot) handleCommand(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	defer func() {
+		if r := recover(); r != nil {
+			b.replyEphemeral(s, i, fmt.Sprintf("Fehler: %v", r))
+		}
+	}()
+	switch i.ApplicationCommandData().Name {
+	case "auftrag":
+		b.cmdCreateOrder(s, i)
+	case "auftrag_status":
+		b.cmdStatus(s, i, optInt(i, "id"))
+	case "auftrag_liste":
+		b.cmdList(s, i)
+	case "auftrag_abschliessen":
+		b.cmdFinish(s, i, optInt(i, "id"))
+	case "auftrag_status_setzen":
+		b.cmdSetStatus(s, i, optInt(i, "id"), optString(i, "status"), optString(i, "notiz"))
+	case "auftrag_abbrechen":
+		b.cmdCancel(s, i, optInt(i, "id"), optString(i, "grund"))
+	case "auftrag_nachricht":
+		b.cmdMessage(s, i, optInt(i, "id"), optString(i, "text"))
+	case "lager_add":
+		b.cmdInventoryAdd(s, i, false)
+	case "lager_remove":
+		b.cmdInventoryAdd(s, i, true)
+	case "lager_liste":
+		b.cmdInventoryList(s, i)
+	case "lager_check":
+		b.cmdInventoryCheck(s, i)
+	}
+}
+
+func (b *Bot) cmdCreateOrder(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	deadline := optString(i, "frist")
+	if _, err := time.Parse("2006-01-02", deadline); err != nil {
+		b.replyEphemeral(s, i, "Bitte Frist im Format YYYY-MM-DD angeben.")
+		return
+	}
+	o := &Order{SubmitterID: userID(i), SubmitterName: userString(i), Commodity: strings.TrimSpace(optString(i, "ware")), Quality: int(optInt(i, "qualitaet")), QuantityAmount: optFloat(i, "menge"), QuantityUnit: optString(i, "einheit"), Deadline: deadline, DeliveryPlace: strings.TrimSpace(optString(i, "lieferort")), MaxBudgetAUEC: optInt(i, "budget")}
+	if o.Commodity == "" || o.DeliveryPlace == "" {
+		b.replyEphemeral(s, i, "Ware und Liefer-Ort dürfen nicht leer sein.")
+		return
+	}
+	id, err := b.store.CreateOrder(o, userID(i), userString(i))
+	if err != nil {
+		b.replyEphemeral(s, i, "Konnte Auftrag nicht speichern: "+err.Error())
+		return
+	}
+	o, err = b.store.GetOrder(id)
+	if err != nil {
+		b.replyEphemeral(s, i, "Auftrag wurde gespeichert, konnte aber nicht erneut gelesen werden: "+err.Error())
+		return
+	}
+
+	var publicMsgID, publicChannelID string
+	if b.cfg.PublicOrderChannelID != "" {
+		msg, err := s.ChannelMessageSendComplex(b.cfg.PublicOrderChannelID, &discordgo.MessageSend{Embeds: []*discordgo.MessageEmbed{publicOrderEmbed(o)}})
+		if err != nil {
+			log.Println("public order post failed:", err)
+		} else {
+			publicMsgID, publicChannelID = msg.ID, b.cfg.PublicOrderChannelID
+		}
+	}
+	internalMsg, err := s.ChannelMessageSendComplex(b.cfg.InternalOrderChannelID, &discordgo.MessageSend{Embeds: []*discordgo.MessageEmbed{b.internalOrderEmbed(o)}, Components: orderButtons(o.ID, true)})
+	if err != nil {
+		b.replyEphemeral(s, i, "Auftrag gespeichert, aber interner Channel-Post fehlgeschlagen: "+err.Error())
+		return
+	}
+	threadID := b.tryCreateThread(internalMsg.ChannelID, internalMsg.ID, fmt.Sprintf("Auftrag-%d-%s", id, safeThreadName(o.Commodity)))
+	_ = b.store.SetMessages(id, publicChannelID, publicMsgID, internalMsg.ChannelID, internalMsg.ID, threadID)
+	if threadID != "" {
+		_, _ = s.ChannelMessageSend(threadID, fmt.Sprintf("Interner Thread zu Auftrag #%d. Einreicher: <@%s>. Lagerdaten bleiben intern.", id, o.SubmitterID))
+	}
+	b.audit(fmt.Sprintf("Auftrag #%d erstellt von %s: %s %s", id, userString(i), quantityString(o.QuantityAmount, o.QuantityUnit), o.Commodity))
+	b.replyEphemeral(s, i, fmt.Sprintf("Auftrag #%d wurde erstellt. Das Team wurde informiert.", id))
+}
+
+func (b *Bot) cmdStatus(s *discordgo.Session, i *discordgo.InteractionCreate, id int64) {
+	o, err := b.store.GetOrder(id)
+	if err != nil {
+		b.replyEphemeral(s, i, "Auftrag nicht gefunden.")
+		return
+	}
+	internal := b.isTeamOrAdmin(i)
+	if !internal && userID(i) != o.SubmitterID && userID(i) != o.AcceptorID {
+		b.replyEphemeral(s, i, "Du kannst nur eigene Aufträge anzeigen.")
+		return
+	}
+	if internal {
+		b.respondEmbed(s, i, b.internalOrderEmbed(o), true)
+	} else {
+		b.respondEmbed(s, i, publicOrderEmbed(o), true)
+	}
+}
+
+func (b *Bot) cmdList(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	status := optString(i, "status")
+	limit := int(optIntDefault(i, "limit", 10))
+	orders, err := b.store.ListOrders(status, limit)
+	if err != nil {
+		b.replyEphemeral(s, i, err.Error())
+		return
+	}
+	if len(orders) == 0 {
+		b.replyEphemeral(s, i, "Keine Aufträge gefunden.")
+		return
+	}
+	var lines []string
+	for _, o := range orders {
+		line := fmt.Sprintf("#%d — %s, %s, Budget %d aUEC, Frist %s, Status %s", o.ID, o.Commodity, quantityString(o.QuantityAmount, o.QuantityUnit), o.MaxBudgetAUEC, o.Deadline, o.Status)
+		if b.isTeamOrAdmin(i) {
+			line += fmt.Sprintf(", Einreicher <@%s>", o.SubmitterID)
+		}
+		lines = append(lines, line)
+	}
+	b.replyEphemeral(s, i, strings.Join(lines, "\n"))
+}
+
+func (b *Bot) cmdFinish(s *discordgo.Session, i *discordgo.InteractionCreate, id int64) {
+	o, err := b.store.GetOrder(id)
+	if err != nil {
+		b.replyEphemeral(s, i, "Auftrag nicht gefunden.")
+		return
+	}
+	uid := userID(i)
+	if uid != o.SubmitterID && uid != o.AcceptorID && !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur Einreicher, Annehmer oder Team/Admin können abschließen.")
+		return
+	}
+	o, err = b.store.SetStatus(id, StatusCompleted, "Abgeschlossen", uid, userString(i))
+	if err != nil {
+		b.replyEphemeral(s, i, err.Error())
+		return
+	}
+	b.updateOrderMessages(o, false)
+	b.notifyParticipants(o, fmt.Sprintf("Auftrag #%d wurde abgeschlossen.", id))
+	b.audit(fmt.Sprintf("Auftrag #%d abgeschlossen durch %s", id, userString(i)))
+	b.replyEphemeral(s, i, fmt.Sprintf("Auftrag #%d wurde abgeschlossen.", id))
+}
+
+func (b *Bot) cmdSetStatus(s *discordgo.Session, i *discordgo.InteractionCreate, id int64, status, note string) {
+	if !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur Team/Admin kann den Status setzen.")
+		return
+	}
+	if note == "" {
+		note = "Status manuell gesetzt"
+	}
+	o, err := b.store.SetStatus(id, status, note, userID(i), userString(i))
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			b.replyEphemeral(s, i, "Auftrag nicht gefunden.")
+		} else {
+			b.replyEphemeral(s, i, err.Error())
+		}
+		return
+	}
+	active := status == StatusOpen
+	b.updateOrderMessages(o, active)
+	b.notifyParticipants(o, fmt.Sprintf("Status von Auftrag #%d wurde auf `%s` gesetzt. Hinweis: %s", id, status, note))
+	b.audit(fmt.Sprintf("Auftrag #%d Status %s durch %s: %s", id, status, userString(i), note))
+	b.replyEphemeral(s, i, fmt.Sprintf("Status von Auftrag #%d wurde auf %s gesetzt.", id, status))
+}
+
+func (b *Bot) cmdCancel(s *discordgo.Session, i *discordgo.InteractionCreate, id int64, reason string) {
+	o, err := b.store.GetOrder(id)
+	if err != nil {
+		b.replyEphemeral(s, i, "Auftrag nicht gefunden.")
+		return
+	}
+	if userID(i) != o.SubmitterID && !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur der Einreicher oder Team/Admin kann abbrechen.")
+		return
+	}
+	if reason == "" {
+		reason = "Abgebrochen"
+	}
+	o, err = b.store.SetStatus(id, StatusCancelled, reason, userID(i), userString(i))
+	if err != nil {
+		b.replyEphemeral(s, i, err.Error())
+		return
+	}
+	b.updateOrderMessages(o, false)
+	b.notifyParticipants(o, fmt.Sprintf("Auftrag #%d wurde abgebrochen. Grund: %s", id, reason))
+	b.audit(fmt.Sprintf("Auftrag #%d abgebrochen durch %s: %s", id, userString(i), reason))
+	b.replyEphemeral(s, i, fmt.Sprintf("Auftrag #%d wurde abgebrochen.", id))
+}
+
+func (b *Bot) cmdMessage(s *discordgo.Session, i *discordgo.InteractionCreate, id int64, text string) {
+	o, err := b.store.GetOrder(id)
+	if err != nil {
+		b.replyEphemeral(s, i, "Auftrag nicht gefunden.")
+		return
+	}
+	uid := userID(i)
+	if uid != o.SubmitterID && uid != o.AcceptorID && !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur Einreicher, Annehmer oder Team/Admin können Nachrichten senden.")
+		return
+	}
+	body := fmt.Sprintf("Nachricht zu Auftrag #%d von %s:\n%s", o.ID, userString(i), text)
+	b.notifyParticipants(o, body)
+	if o.ThreadID != "" {
+		_, _ = s.ChannelMessageSend(o.ThreadID, body)
+	}
+	_ = b.store.AddEvent(id, uid, userString(i), EventMessageForwarded, text)
+	b.replyEphemeral(s, i, "Nachricht wurde weitergeleitet.")
+}
+
+func (b *Bot) cmdInventoryAdd(s *discordgo.Session, i *discordgo.InteractionCreate, remove bool) {
+	if !b.isAdmin(i) {
+		b.replyEphemeral(s, i, "Nur Admins dürfen Lagerbestände ändern.")
+		return
+	}
+	amount := optFloat(i, "menge")
+	if remove {
+		amount = -amount
+	}
+	mode := optString(i, "modus")
+	item := InventoryItem{Name: strings.TrimSpace(optString(i, "ware")), Quality: int(optInt(i, "qualitaet")), QuantityAmount: amount, QuantityUnit: optString(i, "einheit"), Location: strings.TrimSpace(optString(i, "ort")), Note: strings.TrimSpace(optString(i, "notiz")), UpdatedByID: userID(i), UpdatedByName: userString(i)}
+	if item.Name == "" {
+		b.replyEphemeral(s, i, "Ware darf nicht leer sein.")
+		return
+	}
+	updated, err := b.store.UpsertInventory(item, mode != "set" || remove)
+	if err != nil {
+		b.replyEphemeral(s, i, "Lager konnte nicht aktualisiert werden: "+err.Error())
+		return
+	}
+	b.audit(fmt.Sprintf("Lager geändert durch %s: %s Q%d = %s %s @ %s", userString(i), updated.Name, updated.Quality, formatAmount(updated.QuantityAmount), updated.QuantityUnit, updated.Location))
+	b.replyEphemeral(s, i, fmt.Sprintf("Lager aktualisiert: %s Q%d — %s %s%s", updated.Name, updated.Quality, formatAmount(updated.QuantityAmount), updated.QuantityUnit, locationSuffix(updated.Location)))
+}
+
+func (b *Bot) cmdInventoryList(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	if !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur Team/Admin kann das Lager anzeigen.")
+		return
+	}
+	items, err := b.store.ListInventory(optString(i, "suche"), int(optIntDefault(i, "limit", 20)))
+	if err != nil {
+		b.replyEphemeral(s, i, err.Error())
+		return
+	}
+	if len(items) == 0 {
+		b.replyEphemeral(s, i, "Keine Lagerbestände gefunden.")
+		return
+	}
+	var lines []string
+	for _, it := range items {
+		lines = append(lines, fmt.Sprintf("#%d — %s Q%d: %s %s%s%s", it.ID, it.Name, it.Quality, formatAmount(it.QuantityAmount), it.QuantityUnit, locationSuffix(it.Location), noteSuffix(it.Note)))
+	}
+	b.replyEphemeral(s, i, strings.Join(lines, "\n"))
+}
+
+func (b *Bot) cmdInventoryCheck(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	if !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur Team/Admin kann das Lager prüfen.")
+		return
+	}
+	o := &Order{Commodity: optString(i, "ware"), Quality: int(optInt(i, "qualitaet")), QuantityAmount: optFloat(i, "menge"), QuantityUnit: optString(i, "einheit")}
+	b.replyEphemeral(s, i, b.inventoryText(o))
+}
+
+func (b *Bot) handleButton(s *discordgo.Session, i *discordgo.InteractionCreate) {
+	customID := i.MessageComponentData().CustomID
+	parts := strings.Split(customID, ":")
+	if len(parts) != 2 || (parts[0] != "order_accept" && parts[0] != "order_decline") {
+		return
+	}
+	if !b.isTeamOrAdmin(i) {
+		b.replyEphemeral(s, i, "Nur das Team kann Aufträge annehmen oder ablehnen.")
+		return
+	}
+	id, _ := strconv.ParseInt(parts[1], 10, 64)
+	user := i.Member.User
+	if parts[0] == "order_accept" {
+		o, err := b.store.AcceptOrder(id, user.ID, user.String())
+		if err != nil {
+			b.replyEphemeral(s, i, "Konnte nicht annehmen: "+err.Error())
+			return
+		}
+		b.dm(o.SubmitterID, fmt.Sprintf("Dein Auftrag #%d wurde von %s angenommen. Kontakt: <@%s>", o.ID, user.String(), user.ID))
+		if o.ThreadID != "" {
+			_, _ = s.ChannelMessageSend(o.ThreadID, fmt.Sprintf("Angenommen durch <@%s>.", user.ID))
+		}
+		b.updateOrderMessages(o, false)
+		b.audit(fmt.Sprintf("Auftrag #%d angenommen durch %s", id, user.String()))
+		b.replyEphemeral(s, i, fmt.Sprintf("Du hast Auftrag #%d angenommen. Der Einreicher wurde informiert.", id))
+		return
+	}
+	o, err := b.store.DeclineOrder(id, user.ID, user.String(), "Kann nicht angenommen werden")
+	if err != nil {
+		b.replyEphemeral(s, i, err.Error())
+		return
+	}
+	b.dm(o.SubmitterID, fmt.Sprintf("Auftrag #%d kann aktuell nicht angenommen werden.", o.ID))
+	b.updateOrderMessages(o, false)
+	b.audit(fmt.Sprintf("Auftrag #%d abgelehnt durch %s", id, user.String()))
+	b.replyEphemeral(s, i, "Ablehnung wurde an den Einreicher gemeldet.")
+}
+
+func (b *Bot) updateOrderMessages(o *Order, active bool) {
+	if o.PublicChannelID != "" && o.PublicMessageID != "" {
+		_, _ = b.dg.ChannelMessageEditComplex(&discordgo.MessageEdit{Channel: o.PublicChannelID, ID: o.PublicMessageID, Embeds: &[]*discordgo.MessageEmbed{publicOrderEmbed(o)}})
+	}
+	if o.InternalChannelID != "" && o.InternalMessageID != "" {
+		components := orderButtons(o.ID, active)
+		_, _ = b.dg.ChannelMessageEditComplex(&discordgo.MessageEdit{Channel: o.InternalChannelID, ID: o.InternalMessageID, Embeds: &[]*discordgo.MessageEmbed{b.internalOrderEmbed(o)}, Components: &components})
+	}
+}
+
+func orderButtons(id int64, active bool) []discordgo.MessageComponent {
+	if !active {
+		return []discordgo.MessageComponent{}
+	}
+	return []discordgo.MessageComponent{discordgo.ActionsRow{Components: []discordgo.MessageComponent{discordgo.Button{Label: "Annehmen", Style: discordgo.SuccessButton, CustomID: fmt.Sprintf("order_accept:%d", id)}, discordgo.Button{Label: "Ablehnen", Style: discordgo.DangerButton, CustomID: fmt.Sprintf("order_decline:%d", id)}}}}
+}
+
+func publicOrderEmbed(o *Order) *discordgo.MessageEmbed {
+	return &discordgo.MessageEmbed{Title: fmt.Sprintf("Auftrag #%d — %s", o.ID, o.Commodity), Description: "Ein neuer Lieferauftrag wurde erfasst.", Color: statusColor(o.Status), Fields: []*discordgo.MessageEmbedField{{Name: "Ware", Value: o.Commodity, Inline: true}, {Name: "Qualität", Value: fmt.Sprintf("%d/1000", o.Quality), Inline: true}, {Name: "Menge", Value: quantityString(o.QuantityAmount, o.QuantityUnit), Inline: true}, {Name: "Frist", Value: o.Deadline, Inline: true}, {Name: "Liefer-Ort", Value: o.DeliveryPlace, Inline: true}, {Name: "Budget", Value: fmt.Sprintf("%d aUEC", o.MaxBudgetAUEC), Inline: true}, {Name: "Status", Value: o.Status, Inline: true}}, Timestamp: o.UpdatedAt.Format(time.RFC3339)}
+}
+
+func (b *Bot) internalOrderEmbed(o *Order) *discordgo.MessageEmbed {
+	emb := publicOrderEmbed(o)
+	emb.Title = "Intern: " + emb.Title
+	emb.Fields = append(emb.Fields, &discordgo.MessageEmbedField{Name: "Einreicher", Value: fmt.Sprintf("<@%s> (%s)", o.SubmitterID, o.SubmitterName), Inline: false})
+	if o.AcceptorID != "" {
+		emb.Fields = append(emb.Fields, &discordgo.MessageEmbedField{Name: "Angenommen von", Value: fmt.Sprintf("<@%s> (%s)", o.AcceptorID, o.AcceptorName), Inline: false})
+	}
+	emb.Fields = append(emb.Fields, &discordgo.MessageEmbedField{Name: "Interne Lagerprüfung", Value: b.inventoryText(o), Inline: false})
+	if o.ThreadID != "" {
+		emb.Fields = append(emb.Fields, &discordgo.MessageEmbedField{Name: "Interner Thread", Value: fmt.Sprintf("<#%s>", o.ThreadID), Inline: false})
+	}
+	return emb
+}
+
+func (b *Bot) inventoryText(o *Order) string {
+	matches, total, err := b.store.FindInventoryForOrder(o)
+	if err != nil {
+		return "Lagerprüfung fehlgeschlagen: " + err.Error()
+	}
+	if len(matches) == 0 {
+		return fmt.Sprintf("Nicht verfügbar: kein Bestand für `%s` mit Qualität >= %d und Einheit `%s`.", o.Commodity, o.Quality, o.QuantityUnit)
+	}
+	status := "Teilweise/nicht ausreichend"
+	if total >= o.QuantityAmount {
+		status = "Verfügbar"
+	}
+	var lines []string
+	lines = append(lines, fmt.Sprintf("%s: benötigt %s %s, gesamt verfügbar %s %s.", status, formatAmount(o.QuantityAmount), o.QuantityUnit, formatAmount(total), o.QuantityUnit))
+	for idx, m := range matches {
+		if idx >= 5 {
+			lines = append(lines, fmt.Sprintf("… plus %d weitere Positionen", len(matches)-idx))
+			break
+		}
+		lines = append(lines, fmt.Sprintf("• %s Q%d: %s %s%s", m.Item.Name, m.Item.Quality, formatAmount(m.Item.QuantityAmount), m.Item.QuantityUnit, locationSuffix(m.Item.Location)))
+	}
+	return strings.Join(lines, "\n")
+}
+
+func statusColor(status string) int {
+	switch status {
+	case StatusOpen:
+		return 0x3498db
+	case StatusAccepted, StatusInDelivery:
+		return 0xf1c40f
+	case StatusDelivered, StatusCompleted:
+		return 0x2ecc71
+	case StatusDeclined, StatusCancelled:
+		return 0xe74c3c
+	default:
+		return 0x95a5a6
+	}
+}
+
+func (b *Bot) tryCreateThread(channelID, messageID, name string) string {
+	thread, err := b.dg.MessageThreadStart(channelID, messageID, name, 1440)
+	if err != nil {
+		log.Println("thread creation failed:", err)
+		return ""
+	}
+	return thread.ID
+}
+
+func (b *Bot) notifyParticipants(o *Order, body string) {
+	b.dm(o.SubmitterID, body)
+	if o.AcceptorID != "" && o.AcceptorID != o.SubmitterID {
+		b.dm(o.AcceptorID, body)
+	}
+}
+func (b *Bot) dm(userID, body string) {
+	ch, err := b.dg.UserChannelCreate(userID)
+	if err != nil {
+		log.Println("dm channel failed:", err)
+		return
+	}
+	if _, err := b.dg.ChannelMessageSend(ch.ID, body); err != nil {
+		log.Println("dm send failed:", err)
+	}
+}
+func (b *Bot) audit(body string) {
+	log.Println("AUDIT", body)
+	if b.cfg.AuditChannelID != "" {
+		_, _ = b.dg.ChannelMessageSend(b.cfg.AuditChannelID, body)
+	}
+}
+
+func (b *Bot) isTeamOrAdmin(i *discordgo.InteractionCreate) bool {
+	return b.isAdmin(i) || hasAnyRole(i, b.cfg.TeamRoleIDs)
+}
+func (b *Bot) isAdmin(i *discordgo.InteractionCreate) bool {
+	if hasAnyRole(i, b.cfg.AdminRoleIDs) {
+		return true
+	}
+	if i.Member != nil && i.Member.Permissions&discordgo.PermissionAdministrator != 0 {
+		return true
+	}
+	return false
+}
+func hasAnyRole(i *discordgo.InteractionCreate, roleIDs []string) bool {
+	if i.Member == nil {
+		return false
+	}
+	for _, have := range i.Member.Roles {
+		for _, want := range roleIDs {
+			if have == want {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (b *Bot) replyEphemeral(s *discordgo.Session, i *discordgo.InteractionCreate, content string) {
+	_ = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{Type: discordgo.InteractionResponseChannelMessageWithSource, Data: &discordgo.InteractionResponseData{Content: content, Flags: discordgo.MessageFlagsEphemeral}})
+}
+func (b *Bot) respondEmbed(s *discordgo.Session, i *discordgo.InteractionCreate, embed *discordgo.MessageEmbed, ephemeral bool) {
+	flags := discordgo.MessageFlags(0)
+	if ephemeral {
+		flags = discordgo.MessageFlagsEphemeral
+	}
+	_ = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{Type: discordgo.InteractionResponseChannelMessageWithSource, Data: &discordgo.InteractionResponseData{Embeds: []*discordgo.MessageEmbed{embed}, Flags: flags}})
+}
+
+func optString(i *discordgo.InteractionCreate, name string) string {
+	for _, o := range i.ApplicationCommandData().Options {
+		if o.Name == name {
+			return o.StringValue()
+		}
+	}
+	return ""
+}
+func optInt(i *discordgo.InteractionCreate, name string) int64 {
+	for _, o := range i.ApplicationCommandData().Options {
+		if o.Name == name {
+			return o.IntValue()
+		}
+	}
+	return 0
+}
+func optIntDefault(i *discordgo.InteractionCreate, name string, fallback int64) int64 {
+	for _, o := range i.ApplicationCommandData().Options {
+		if o.Name == name {
+			return o.IntValue()
+		}
+	}
+	return fallback
+}
+func optFloat(i *discordgo.InteractionCreate, name string) float64 {
+	for _, o := range i.ApplicationCommandData().Options {
+		if o.Name == name {
+			return o.FloatValue()
+		}
+	}
+	return 0
+}
+func userID(i *discordgo.InteractionCreate) string {
+	if i.Member != nil && i.Member.User != nil {
+		return i.Member.User.ID
+	}
+	if i.User != nil {
+		return i.User.ID
+	}
+	return ""
+}
+func userString(i *discordgo.InteractionCreate) string {
+	if i.Member != nil && i.Member.User != nil {
+		return i.Member.User.String()
+	}
+	if i.User != nil {
+		return i.User.String()
+	}
+	return "unbekannt"
+}
+func locationSuffix(v string) string {
+	if strings.TrimSpace(v) == "" {
+		return ""
+	}
+	return " @ " + strings.TrimSpace(v)
+}
+func noteSuffix(v string) string {
+	if strings.TrimSpace(v) == "" {
+		return ""
+	}
+	return " — " + strings.TrimSpace(v)
+}
+func safeThreadName(v string) string {
+	v = strings.Map(func(r rune) rune {
+		if strings.ContainsRune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_", r) {
+			return r
+		}
+		if r == ' ' {
+			return '-'
+		}
+		return -1
+	}, v)
+	if len(v) > 35 {
+		v = v[:35]
+	}
+	if v == "" {
+		return "auftrag"
+	}
+	return v
+}
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..66702b7
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,7 @@
+services:
+  starauftrag-bot:
+    build: .
+    restart: unless-stopped
+    env_file: .env
+    volumes:
+      - ./data:/data
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..bb00886
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,26 @@
+module starauftrag-bot
+
+go 1.22
+
+require (
+	github.com/bwmarrin/discordgo v0.28.1
+	github.com/glebarez/sqlite v1.11.0
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/glebarez/go-sqlite v1.21.2 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect
+	golang.org/x/sys v0.7.0 // indirect
+	gorm.io/gorm v1.25.7 // indirect
+	modernc.org/libc v1.22.5 // indirect
+	modernc.org/mathutil v1.5.0 // indirect
+	modernc.org/memory v1.5.0 // indirect
+	modernc.org/sqlite v1.23.1 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..96ae8e5
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,43 @@
+github.com/bwmarrin/discordgo v0.28.1 h1:gXsuo2GBO7NbR6uqmrrBDplPUx2T3nzu775q/Rd1aG4=
+github.com/bwmarrin/discordgo v0.28.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/glebarez/go-sqlite v1.21.2 h1:3a6LFC4sKahUunAmynQKLZceZCOzUthkRkEAl9gAXWo=
+github.com/glebarez/go-sqlite v1.21.2/go.mod h1:sfxdZyhQjTM2Wry3gVYWaW072Ri1WMdWJi0k6+3382k=
+github.com/glebarez/sqlite v1.11.0 h1:wSG0irqzP6VurnMEpFGer5Li19RpIRi2qvQz++w0GMw=
+github.com/glebarez/sqlite v1.11.0/go.mod h1:h8/o8j5wiAsqSPoWELDUdJXhjAhsVliSn7bWZjOhrgQ=
+github.com/google/pprof v0.0.0-20221118152302-e6195bd50e26 h1:Xim43kblpZXfIBQsbuBVKCudVG457BR2GZFIz3uw3hQ=
+github.com/google/pprof v0.0.0-20221118152302-e6195bd50e26/go.mod h1:dDKJzRmX4S37WGHujM7tX//fmj1uioxKzKxz3lo4HJo=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
+github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b h1:7mWr3k41Qtv8XlltBkDkl8LoP3mpSgBW8BUoxtEdbXg=
+golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
+golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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diff --git a/main.go b/main.go
new file mode 100644
index 0000000..3cd47e4
--- /dev/null
+++ b/main.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func main() {
+	cfg := loadConfig()
+	store, err := NewStore(cfg.DatabasePath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer store.Close()
+	bot, err := NewBot(cfg, store)
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := bot.Start(); err != nil {
+		log.Fatal(err)
+	}
+	log.Println("Bot läuft. Beenden mit Ctrl+C.")
+	stop := make(chan os.Signal, 1)
+	signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
+	<-stop
+	bot.Stop()
+}
diff --git a/models.go b/models.go
new file mode 100644
index 0000000..57f8be8
--- /dev/null
+++ b/models.go
@@ -0,0 +1,67 @@
+package main
+
+import "time"
+
+const (
+	StatusOpen       = "open"
+	StatusAccepted   = "accepted"
+	StatusInDelivery = "in_delivery"
+	StatusDelivered  = "delivered"
+	StatusCompleted  = "completed"
+	StatusDeclined   = "declined"
+	StatusCancelled  = "cancelled"
+)
+
+const (
+	EventOrderCreated     = "order_created"
+	EventOrderAccepted    = "order_accepted"
+	EventOrderDeclined    = "order_declined"
+	EventOrderStatus      = "order_status_changed"
+	EventMessageForwarded = "message_forwarded"
+	EventInventoryChanged = "inventory_changed"
+)
+
+type Order struct {
+	ID                int64
+	SubmitterID       string
+	SubmitterName     string
+	AcceptorID        string
+	AcceptorName      string
+	Commodity         string
+	Quality           int
+	QuantityAmount    float64
+	QuantityUnit      string
+	Deadline          string
+	DeliveryPlace     string
+	MaxBudgetAUEC     int64
+	Status            string
+	PublicChannelID   string
+	PublicMessageID   string
+	InternalChannelID string
+	InternalMessageID string
+	ThreadID          string
+	LastFeedback      string
+	CreatedAt         time.Time
+	UpdatedAt         time.Time
+}
+
+type InventoryItem struct {
+	ID             int64
+	Name           string
+	NormalizedName string
+	Quality        int
+	QuantityAmount float64
+	QuantityUnit   string
+	Location       string
+	Note           string
+	UpdatedByID    string
+	UpdatedByName  string
+	CreatedAt      time.Time
+	UpdatedAt      time.Time
+}
+
+type InventoryMatch struct {
+	Item              InventoryItem
+	RequestedQuantity float64
+	Available         bool
+}