* refactor(tests): replace local function copies in test_endpoint_resolver with real imports
The test file carried 9 verbatim copies of src/endpoint_resolver.py functions
to avoid import-pollution concerns, but these copies are a drift hazard — PR #3343
had to update both in parallel. Replace them with direct imports so future changes
to endpoint_resolver are automatically exercised by the test suite.
Also fixes _ollama_api_root in endpoint_resolver.py: the bare-URL Ollama case
(e.g. http://nas:11434 with empty path) was already handled correctly in the test
copy but was missing from the real function, which would return /chat instead of
/api/chat for native Ollama endpoints without an explicit /api prefix.
Closes#3351
* refactor: import _ollama_api_root from llm_core instead of duplicating it
endpoint_resolver already imports _detect_provider and _host_match from
llm_core. Add _ollama_api_root to that import and remove the local copy,
collapsing two implementations to one source of truth.
llm_core's version is a superset (also strips /api/chat|tags|generate paths),
and since normalize_base already removes those suffixes upstream the result
is identical for every input used here.
GET /api/sessions fired full-table scans against sessions, documents, and
gallery_images on every call. Added DbSession.owner == user (line 265),
Document.owner == user (line 283), GalleryImage.owner == user (line 289),
and .limit(2000) to auto_sort_sessions (line 1013). All follow the existing
owner-scoping pattern at lines 700 and 1230. No behaviour change — the
response was already correct; this eliminates the over-fetch.
Syed Ali Jaseem