- Add backend/ai/utils.py — parse_classification, parse_suggestions, strip_code_fences
shared by all AI providers; removes duplicated private functions from
anthropic_provider.py and openai_provider.py
- Add backend/deps/utils.py — get_client_ip, parse_uuid request-parsing helpers;
removes local _ip() variants from admin.py, auth.py, shares.py, folders.py
- Add backend/storage/exceptions.py — canonical CloudConnectionError definition;
all routers and backends import from here instead of redefining
- Move validate_password_strength to backend/services/auth.py; removes duplicated
_validate_password_strength from admin.py and auth.py
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Cloud-aware routing added in 05-09 checks doc.storage_backend; MagicMock
attribute is truthy and != 'minio', so the test was entering the cloud branch
without any mock for get_storage_backend_for_document. Regression: test passed
before 05-09 when _run() had no cloud routing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>