added contract history

backend/node_modules/.prisma/client/index-browser.js

@@ -443,6 +443,16 @@ exports.Prisma.ContractScalarFieldEnum = {
   updatedAt: 'updatedAt'
 };
 
+exports.Prisma.ContractHistoryEntryScalarFieldEnum = {
+  id: 'id',
+  contractId: 'contractId',
+  title: 'title',
+  description: 'description',
+  isAutomatic: 'isAutomatic',
+  createdBy: 'createdBy',
+  createdAt: 'createdAt'
+};
+
 exports.Prisma.ContractTaskScalarFieldEnum = {
   id: 'id',
   contractId: 'contractId',
@@ -676,6 +686,7 @@ exports.Prisma.ModelName = {
   Tariff: 'Tariff',
   ContractCategory: 'ContractCategory',
   Contract: 'Contract',
+  ContractHistoryEntry: 'ContractHistoryEntry',
   ContractTask: 'ContractTask',
   ContractTaskSubtask: 'ContractTaskSubtask',
   EnergyContractDetails: 'EnergyContractDetails',

backend/node_modules/.prisma/client/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "prisma-client-ab03eeebd49b41f4edbc7df102e0a7779d814508dbccb860745760460e9e271f",
+  "name": "prisma-client-652f85dbf9d7be282ff4b16714e4689fe4701aade21c76f6bcc5db624157e639",
   "main": "index.js",
   "types": "index.d.ts",
   "browser": "index-browser.js",

backend/node_modules/.prisma/client/schema.prisma

@@ -566,11 +566,25 @@ model Contract {
 
   tasks          ContractTask[]
   assignedEmails CachedEmail[] // Zugeordnete E-Mails aus dem E-Mail-Client
+  historyEntries ContractHistoryEntry[]
 
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 }
 
+// ==================== CONTRACT HISTORY ====================
+
+model ContractHistoryEntry {
+  id          Int      @id @default(autoincrement())
+  contractId  Int
+  contract    Contract @relation(fields: [contractId], references: [id], onDelete: Cascade)
+  title       String // Kurzbeschreibung (z.B. "Folgevertrag erstellt", "kWh auf 18000 erhöht")
+  description String?  @db.Text // Längere Beschreibung (optional)
+  isAutomatic Boolean  @default(false) // true = automatisch erstellt, false = manuell
+  createdBy   String // E-Mail des Erstellers
+  createdAt   DateTime @default(now())
+}
+
 // ==================== CONTRACT TASKS ====================
 
 enum ContractTaskStatus {

backend/node_modules/.prisma/client/wasm.js

@@ -443,6 +443,16 @@ exports.Prisma.ContractScalarFieldEnum = {
   updatedAt: 'updatedAt'
 };
 
+exports.Prisma.ContractHistoryEntryScalarFieldEnum = {
+  id: 'id',
+  contractId: 'contractId',
+  title: 'title',
+  description: 'description',
+  isAutomatic: 'isAutomatic',
+  createdBy: 'createdBy',
+  createdAt: 'createdAt'
+};
+
 exports.Prisma.ContractTaskScalarFieldEnum = {
   id: 'id',
   contractId: 'contractId',
@@ -676,6 +686,7 @@ exports.Prisma.ModelName = {
   Tariff: 'Tariff',
   ContractCategory: 'ContractCategory',
   Contract: 'Contract',
+  ContractHistoryEntry: 'ContractHistoryEntry',
   ContractTask: 'ContractTask',
   ContractTaskSubtask: 'ContractTaskSubtask',
   EnergyContractDetails: 'EnergyContractDetails',