feat(scan): whiten receipt backgrounds and embed OCR in PDFs

frontend/utils/agentInstaller.mjs

@@ -26,6 +26,7 @@ export function renderAgentInstaller(bundle, options) {
     'FEDEO_POLL_SECONDS=5', 'FEDEO_SCAN_FORMAT=pdf', 'FEDEO_SCAN_RESOLUTION=300',
     'FEDEO_SCAN_MODE=Color', 'FEDEO_SCAN_TIMEOUT_SECONDS=900',
     'FEDEO_SCAN_POSTPROCESS=false', 'FEDEO_SCAN_POSTPROCESS_PROFILE=document', '',
+    'FEDEO_SCAN_BACKGROUND_CLEANUP=true', 'FEDEO_SCAN_OCR=true', 'FEDEO_SCAN_OCR_LANGUAGE=deu+eng', '',
   ].join('\n')
   const replacements = {
     AGENT_ID: options.agentId, AUTOSTART: String(Boolean(options.autostart)),
@@ -40,6 +41,7 @@ export function renderAgentInstaller(bundle, options) {
 export const ix1600ScanDefaults = {
   format: 'pdf', resolution: 300, mode: 'Color', source: 'ADF Duplex',
   paperSize: 'A4', postprocess: false, postprocessProfile: 'document',
+  backgroundCleanup: true, ocr: true, ocrLanguage: 'deu+eng',
 }
 
 export function agentSetupReady(agent, since = 0, now = Date.now()) {