Merge branch 'feature/iam-09-api-token-service-accounts' into feature/qa-02-pruefgate-identitaet-mandanten

# Conflicts:
#	scripts/reset-test-env.sh
#	scripts/run-checks.sh

migrations/tenant/0003_service_accounts.down.sql

@@ -0,0 +1,2 @@
+DROP TABLE IF EXISTS api_tokens;
+DROP TABLE IF EXISTS service_accounts;

migrations/tenant/0003_service_accounts.up.sql

@@ -0,0 +1,20 @@
+-- Service-Accounts & API-Token (IAM-09, siehe core-kanban/tickets/IAM-09.md).
+-- Service-Accounts sind eine eigenstaendige Identitaetsklasse neben
+-- menschlichen Benutzern (users), nicht dieselbe Tabelle (Zitadel-Vorbild).
+CREATE TABLE service_accounts (
+    id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name       TEXT NOT NULL,
+    status     TEXT NOT NULL DEFAULT 'active',
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+-- token_hash enthaelt NIEMALS den Klartext-Token, nur dessen SHA-256-Hash.
+CREATE TABLE api_tokens (
+    id                 UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    service_account_id UUID NOT NULL REFERENCES service_accounts(id),
+    token_hash         BYTEA NOT NULL UNIQUE,
+    scopes             TEXT[] NOT NULL DEFAULT '{}',
+    expires_at         TIMESTAMPTZ,
+    revoked_at         TIMESTAMPTZ,
+    created_at         TIMESTAMPTZ NOT NULL DEFAULT now()
+);