Scanner Verwaltung für Geräte-Agenten ergänzen

backend/db/migrations/0052_instance_agent_scan_defaults.sql

@@ -0,0 +1,3 @@
+ALTER TABLE "instance_agents" ADD COLUMN "preferred_scanner_name" text;
+--> statement-breakpoint
+ALTER TABLE "instance_agents" ADD COLUMN "scan_defaults" jsonb DEFAULT '{"format":"pdf","resolution":300,"mode":"Color","source":null}'::jsonb NOT NULL;

backend/db/schema/instance_agents.ts

@@ -29,6 +29,13 @@ export const instanceAgents = pgTable("instance_agents", {
     capabilities: jsonb("capabilities").notNull().default({ scan: true, print: false }),
     scannerNames: jsonb("scanner_names").notNull().default([]),
     printerNames: jsonb("printer_names").notNull().default([]),
+    preferredScannerName: text("preferred_scanner_name"),
+    scanDefaults: jsonb("scan_defaults").notNull().default({
+        format: "pdf",
+        resolution: 300,
+        mode: "Color",
+        source: null,
+    }),
 
     lastSeenAt: timestamp("last_seen_at", { withTimezone: true }),
     lastDebugInfo: jsonb("last_debug_info"),