chore(supabase): remove unused pos_modules and licenses tables

.brain/adr-log.md

@@ -8,3 +8,12 @@
   - Die ungültige RLS-Policy auf `public.partners` wurde entfernt. 
   - `public.companies` wird stattdessen korrekt durch `Admin manage companies` geschützt.
 - **Consequences**: Behebt Migrations-Fehler im Staging-Server, CI/CD-Pipeline baut wieder fehlerfrei.
+
+## ADR-002: Entfernung ungenutzter Lizenztabellen
+- **Status**: Accepted
+- **Date**: 2026-07-06
+- **Context**: Die Tabellen `pos_modules` und `licenses` wurden von einem alten bzw. externen Service genutzt. Im aktuellen Webshop-Frontend werden sie nicht benötigt und führen zu unnötiger RLS- und Integritäts-Komplexität.
+- **Decision**: 
+  - Erstellen einer SQL-Migration zum Löschen (`DROP`) von `licenses` und `pos_modules`.
+  - Anpassung der Integritätsprüfungs-Funktionen `check_database_integrity` und `repair_database_schema` zur Entfernung dieser Relationen.
+- **Consequences**: Schlankere Datenbankstruktur, RLS-Komplexität verringert und sauberere Codebasis.

shop/supabase/migrations/20260707002000_remove_unused_license_tables.sql

@@ -0,0 +1,117 @@
+-- Migration: Remove unused pos_modules and licenses tables and reference functions
+-- 1. Drop the tables (cascade to clean up RLS policies automatically)
+DROP TABLE IF EXISTS public.licenses CASCADE;
+DROP TABLE IF EXISTS public.pos_modules CASCADE;
+
+-- 2. Update database integrity function to remove pos_modules and licenses checks
+CREATE OR REPLACE FUNCTION public.check_database_integrity()
+RETURNS jsonb
+SECURITY DEFINER
+AS $$
+DECLARE
+  tables_to_check text[] := ARRAY[
+    'users',
+    'settings',
+    'companies',
+    'categories',
+    'products',
+    'product_modules',
+    'orders',
+    'profiles',
+    'end_customers'
+  ];
+  t text;
+  t_exists boolean;
+  t_count bigint;
+  tables_result jsonb := jsonb_build_object();
+  result jsonb;
+BEGIN
+  FOREACH t IN ARRAY tables_to_check LOOP
+    SELECT EXISTS (
+      SELECT 1 FROM pg_tables WHERE schemaname = 'public' AND tablename = t
+    ) INTO t_exists;
+    
+    t_count := 0;
+    IF t_exists THEN
+      EXECUTE format('SELECT count(*) FROM public.%I', t) INTO t_count;
+    END IF;
+    
+    tables_result := tables_result || jsonb_build_object(t, jsonb_build_object('exists', t_exists, 'count', t_count));
+  END LOOP;
+
+  result := jsonb_build_object(
+    'tables', tables_result,
+    'errors', jsonb_build_object(
+      'foreign_keys', 0
+    )
+  );
+
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql;
+
+-- 3. Update database repair schema function to remove creation of pos_modules and licenses
+CREATE OR REPLACE FUNCTION public.repair_database_schema()
+RETURNS jsonb
+SECURITY DEFINER
+AS $$
+DECLARE
+  repaired_tables text[] := '{}';
+  result jsonb;
+BEGIN
+  -- 1. profiles table
+  IF NOT EXISTS (SELECT 1 FROM pg_tables WHERE schemaname = 'public' AND tablename = 'profiles') THEN
+    CREATE TABLE public.profiles (
+      id UUID PRIMARY KEY REFERENCES auth.users(id) ON DELETE CASCADE,
+      first_name TEXT,
+      last_name TEXT,
+      company_name TEXT,
+      vat_id TEXT,
+      address TEXT,
+      city TEXT,
+      zip_code TEXT,
+      updated_at TIMESTAMP WITH TIME ZONE DEFAULT timezone('utc'::text, now()) NOT NULL
+    );
+    repaired_tables := array_append(repaired_tables, 'profiles');
+  END IF;
+
+  -- 2. end_customers table
+  IF NOT EXISTS (SELECT 1 FROM pg_tables WHERE schemaname = 'public' AND tablename = 'end_customers') THEN
+    CREATE TABLE public.end_customers (
+      id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      partner_id UUID NOT NULL REFERENCES public.companies(id) ON DELETE CASCADE,
+      company_name TEXT NOT NULL,
+      vat_id TEXT,
+      first_name TEXT,
+      last_name TEXT,
+      street TEXT,
+      zip TEXT,
+      city TEXT,
+      is_anonymized BOOLEAN NOT NULL DEFAULT false,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+    );
+    repaired_tables := array_append(repaired_tables, 'end_customers');
+  END IF;
+
+  -- Enable RLS
+  ALTER TABLE public.profiles ENABLE ROW LEVEL SECURITY;
+  ALTER TABLE public.end_customers ENABLE ROW LEVEL SECURITY;
+
+  -- Recreate RLS Policies
+  DROP POLICY IF EXISTS "Users can view their own profile" ON public.profiles;
+  CREATE POLICY "Users can view their own profile" ON public.profiles FOR SELECT USING (auth.uid() = id);
+  DROP POLICY IF EXISTS "Users can update their own profile" ON public.profiles;
+  CREATE POLICY "Users can update their own profile" ON public.profiles FOR UPDATE USING (auth.uid() = id);
+  DROP POLICY IF EXISTS "Users can insert their own profile" ON public.profiles;
+  CREATE POLICY "Users can insert their own profile" ON public.profiles FOR INSERT WITH CHECK (auth.uid() = id);
+
+  result := jsonb_build_object(
+    'repaired_tables', repaired_tables
+  );
+
+  RETURN result;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Reload Schema Cache
+NOTIFY pgrst, 'reload schema';