Generalize email system with invoice workflow and Stiftungsgeschichte category

- Rename DestinataerEmailEingang → EmailEingang with category support
  (destinataer, rechnung, land_pacht, stiftungsgeschichte, allgemein)
- Add invoice capture workflow: create Verwaltungskosten from email,
  link DMS documents as invoice attachments, track payment status
- Add Stiftungsgeschichte email category with auto-detection patterns
  (Ahnenforschung, Genealogie, Chronik, etc.) and DMS integration
- Update poll_emails task with category detection and DMS context mapping
- Show available history documents in Geschichte editor sidebar
- Consolidate DMS views, remove legacy dokument templates
- Update all detail/form templates for DMS document linking
- Add deploy.sh script and streamline compose.yml

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/stiftung/views/__init__.py

@@ -23,25 +23,6 @@ from .destinataere import (  # noqa: F401
     destinataer_export,
 )
 
-from .dokumente import (  # noqa: F401
-    dokument_management,
-    paperless_document_redirect,
-    dokument_list,
-    dokument_detail,
-    dokument_create,
-    dokument_update,
-    dokument_delete,
-    paperless_ping,
-    paperless_documents,
-    paperless_debug,
-    paperless_tags_only,
-    link_document_search,
-    create_paechter_link_for_verpachtung,
-    link_document_create,
-    link_document_list,
-    link_document_update,
-    link_document_delete,
-)
 
 from .finanzen import (  # noqa: F401
     bericht_list,