refactor(model-routing): centralize explicit foreground fallback policy (#6020)

* refactor(model-routing): centralize explicit foreground fallback policy

Make foreground fallback an explicit per-user, availability-only policy shared by streaming Chat, non-stream Chat, and Agent runs.

Preserve strict defaults, owner/model and credential boundaries, pinned Agent routes, and truthful per-round provenance/accounting. Carry provider-reported model identifiers through native streaming adapters, non-stream responses, and caches, and keep legacy default_model_fallbacks as tombstoned raw storage that generic settings APIs and agent tools cannot expose or mutate.

* fix(agent-loop): restore rebase-dropped qwen routing, workspace prompt, and temperature clamp

* fix(model-routing): thread selected endpoint identity, fix cost classification and fallback eligibility

* fix(chat): restore stream helpers and harden run stop lifecycle

* fix(model-routing): let numeric provider codes win over symbolic rate-limit statuses

* fix(agent-loop): apply qwen temperature and notes-tool clamps per fallback candidate

* fix(chat): honor queued stop across resend and reload canonical terminal on EOF

* fix(chat): track stop queue and cleanup ownership by per-send generation

* fix(agent-loop): preserve requested temperature for non-qwen fallback candidates

* fix(chat): reserve send ownership before any await and scope stop to the current send

* fix(chat): clear the previous run identity at send reservation

---------

Co-authored-by: RaresKeY <158580472+RaresKeY@users.noreply.github.com>
Co-authored-by: StressTestor <212606152+StressTestor@users.noreply.github.com>
This commit is contained in:
Alexandre Teixeira
2026-08-14 08:10:30 +01:00
committed by GitHub
co-authored by RaresKeY StressTestor
parent b52296471b
commit c4369305f0
46 changed files with 11418 additions and 1006 deletions
-7
View File
@@ -1504,13 +1504,6 @@
<span class="adm-model-logo" id="set-defaultModelSelect-logo" style="display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;flex-shrink:0;opacity:0.9;color:var(--fg);"></span>
<select id="set-defaultModelSelect" class="settings-select"></select>
</div>
<div class="settings-row" style="align-items:flex-start;" hidden>
<label class="settings-label" style="margin-top:6px;">Fallbacks</label>
<div style="flex:1;display:flex;flex-direction:column;gap:6px;">
<div id="set-defaultFallbacks" class="settings-fallbacks"></div>
<button type="button" class="settings-fallback-add" id="set-defaultAddFallback" title="Add a model to try if the one above fails">+ Add fallback</button>
</div>
</div>
<div id="set-defaultChatMsg" style="font-size:11px;color:color-mix(in srgb, var(--fg) 45%, transparent);"></div>
</div>
</div>