* fix(streaming): route image input mode by the session's actual provider/model
Image routing (native embed vs vision_analyze text pipeline) previously
resolved the provider/model from the global config default only. A session
switched to a text-only model (e.g. deepseek-v4-flash) still had uploaded
images forwarded natively to a model that cannot see them.
Thread the session's resolved provider/model (active_provider/active_model)
and its pre-canonicalization identity (requested_provider) through
_resolve_image_input_mode, _build_native_multimodal_message,
_sanitize_messages_for_api, and both gateway chat paths. When no session
identity is present the behaviour is unchanged (global default).
Tests: upstream parity, session-level native/text routing, requested_provider
capability lookup, and multimodal/sanitize forwarding.
* test: use generic provider/model names in fixtures and docstrings
Replace real provider/model names (custom:newapi, jd-kimi-k2.6,
stepfunplan, step-3.7-flash, deepseek-v4-flash) with neutral placeholders
(mygateway, my-vision-model, my-text-model, my-vision) so the test suite
does not reference any particular deployment's configuration.
test_active_vision_model_routes_native now passes requested_provider to
keep the assertion independent of models.dev capability data.
* fix(streaming): preserve session provider identity across auth-heal retry
Both credential-healing retry branches unconditionally overwrote
_session_requested_provider with the already-canonicalized resolved_provider,
so a named custom:slug session lost its exact vision-capability entry after an
auth-heal retry -- a text-only custom model would then wrongly RESTORE the
historical image_url parts it correctly stripped on the first attempt.
Make the heal-path assignment conditional (initialize only when empty),
preserving the pre-canonicalization identity captured at first resolve.
Regression test asserts both arms: identity preserved -> images stripped;
identity lost -> images kept (the bug).
Addresses Codex gate CORE finding + greptile P1 on #6882.
Co-authored-by: happy5318 <happy5318@users.noreply.github.com>
* test(vision-routing): skip capability-based tests when hermes-agent absent
The capability-derived 'text' verdict delegates to agent.image_routing
(the single source of truth), which is NOT installed in the WebUI standalone
CI environment -- there _resolve_image_input_mode falls back to native, so the
7 tests asserting a capability-based text verdict failed on CI (they only ever
passed locally where the agent package is on PYTHONPATH).
Guard them with a module-level agent-availability probe + skipif (the same
pytest.importorskip pattern used across the suite for agent-dependent tests):
they run fully where the agent is present and skip honestly where it is not.
Agent-free tests (native carve-out, explicit-signal fallback) still run on CI.
* test(vision-routing): drop unused imports (base64, os, TemporaryDirectory)
Pre-existing F401 unused-imports that ruff's diff-vs-master flagged once the
import block entered the changed-line scope. Path is retained (used in the
_make_png / _normalized_attachments type annotations).
---------
Co-authored-by: happy5318 <happy5318@users.noreply.github.com>
Co-authored-by: nesquena-hermes <nesquena-hermes@users.noreply.github.com>
