KI-AGENT: Mailantworten und Entitätsverknüpfungen ergänzen

backend/db/schema/emails.ts

@@ -155,6 +155,39 @@ export const emailAttachments = pgTable(
     }),
 )
 
+export const emailEntityLinks = pgTable(
+    "email_entity_links",
+    {
+        id: uuid("id").primaryKey().defaultRandom(),
+
+        tenantId: bigint("tenant_id", { mode: "number" })
+            .notNull()
+            .references(() => tenants.id, { onDelete: "cascade", onUpdate: "cascade" }),
+
+        messageId: uuid("message_id")
+            .notNull()
+            .references(() => emailMessages.id, { onDelete: "cascade", onUpdate: "cascade" }),
+
+        entityType: text("entity_type").notNull(),
+        entityId: bigint("entity_id", { mode: "number" }).notNull(),
+
+        linkedBy: uuid("linked_by")
+            .references(() => authUsers.id, { onDelete: "set null", onUpdate: "cascade" }),
+
+        createdAt: timestamp("created_at", { withTimezone: true })
+            .notNull()
+            .defaultNow(),
+    },
+    (table) => ({
+        messageEntityKey: uniqueIndex("email_entity_links_message_entity_key")
+            .on(table.messageId, table.entityType, table.entityId),
+        entityIdx: index("email_entity_links_entity_idx")
+            .on(table.tenantId, table.entityType, table.entityId),
+        messageIdx: index("email_entity_links_message_idx")
+            .on(table.messageId),
+    }),
+)
+
 export const emailSyncState = pgTable(
     "email_sync_state",
     {
@@ -204,5 +237,7 @@ export type EmailMessageBody = typeof emailMessageBodies.$inferSelect
 export type NewEmailMessageBody = typeof emailMessageBodies.$inferInsert
 export type EmailAttachment = typeof emailAttachments.$inferSelect
 export type NewEmailAttachment = typeof emailAttachments.$inferInsert
+export type EmailEntityLink = typeof emailEntityLinks.$inferSelect
+export type NewEmailEntityLink = typeof emailEntityLinks.$inferInsert
 export type EmailSyncState = typeof emailSyncState.$inferSelect
 export type NewEmailSyncState = typeof emailSyncState.$inferInsert