- docker-compose.yml: BODY_SIZE_LIMIT=52428800 (50MB) on UI service
— adapter-node was rejecting PDFs >512KB with 'Content-length exceeds limit'
- storage/import.go: add AnalyzeFile() public function using real PDF/EPUB parsers
- handlers_import.go: analyzeImportFile() now calls storage.AnalyzeFile() instead
of the file-size stub, so chapter count is accurate in the preview