fix: merge main branch and renumber migration 037→040

Resolve all merge conflicts between our automation feature branch and
current main (v0.163.0, 920 commits ahead).

Conflicts resolved:
- app/api/__init__.py: add automation_router alongside main's new routers
  (classification_rules, qr_auth, sessions, system_reset)
- app/config.py: add main's new settings (dropbox_use_global_credentials,
  factory_reset_on_startup, enable_factory_reset)
- app/models.py: add main's new models (ClassificationRuleModel, UserSession,
  QRLoginChallenge, SharePoint integration type)
- app/utils/settings_service.py: merge automation_hooks_enabled with main's
  new metadata entries
- docs/API.md: merge automation API docs with main's classification rules docs
- docs/ConfigurationGuide.md: add factory reset settings
- tests/conftest.py: import both AutomationHook and new main models

Migration renumbered:
- 037_add_automation_hooks → 040_add_automation_hooks
- down_revision: 039_add_classification_rules (was 036_add_document_translation_fields)
- Chain: 036 → 037 → 038 → 039 → 040 (automation hooks)

For all non-automation files with conflicts, main's version was taken since
our branch did not modify those files (conflicts were from a stale prior merge).

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
Agent-Logs-Url: https://github.com/christianlouis/DocuElevate/sessions/cb62f012-3b69-4415-835e-3857ce3e9f45

RUNTIME_INFO

@@ -1,10 +1,10 @@
 DocuElevate Build Information
 ==============================
-Version: 0.152.0
-Build Date: 2026-03-16T21:40:03Z
-Git Commit: 793b6d3e2562518cb404579f656e82a6dc60da02
-Git Short SHA: 793b6d3
+Version: 0.163.0
+Build Date: 2026-03-20T23:38:07Z
+Git Commit: 6f5a73f98ae3e890a232e5202521b1a263cfe5d0
+Git Short SHA: 6f5a73f
 Git Branch: main
-Commit Date: 2026-03-16T22:39:40+01:00
-Build Timestamp: 2026-03-16T21:40:03Z
+Commit Date: 2026-03-21T00:37:49+01:00
+Build Timestamp: 2026-03-20T23:38:07Z
 ==============================