Add AIS eLibrary (AISeL) translator

[introfini]

Summary

• New web translator for the AIS Electronic Library (aisel.aisnet.org), the primary repository for Association for Information Systems publications
• AISeL runs on bepress Digital Commons and hosts conference proceedings (ICIS, ECIS, AMCIS, PACIS, etc.) and journals (JAIS, CAIS, THCI, MISQE, etc.)
• Handles three page types:
  • Individual paper pages with bepress_citation_* meta tags (detects conferencePaper vs journalArticle)
  • Collection/browse pages (conference tracks, journal issues) returning multiple
  • Search results pages (/do/search/) with AJAX-loaded results via Zotero.monitorDOMChanges

Test plan

• 7 test cases passing in Scaffold (6 single items + 1 browse page)
• Tested conference papers: ICIS 2025, AMCIS 2023
• Tested journal articles: JAIS, THCI, MISQE, CAIS (with DOI, ISSN, volume, issue, pages)
• Tested browse/collection page: ECIS 2024 track
• Search results verified manually in browser (AJAX prevents Scaffold testing)
• Extracts: title, authors, date, abstract, DOI, ISSN, volume, issue, pages, keywords, PDF attachment, proceedings/journal title
• Falls back to Embedded Metadata translator when bepress meta tags are missing