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* 🎯 fix: Infer Agents Endpoint for Model Specs Naming an Agent A model spec whose preset names an `agent_id` but omits `endpoint` was unusable. `isModelSpecEndpointMatch` compares the request's endpoint to `preset.endpoint` by strict equality, so an undefined endpoint matched nothing and every request selecting the spec was rejected with a bare `Model spec mismatch` — an error naming neither the spec nor the missing field. The selector had the matching half of the same gap: `handleSelectSpec` read `preset.endpoint` directly, so it sent no endpoint and skipped assigning `agent_id` to `model`. Fixing only the server would leave the request malformed, so the resolution is shared between both. - Add `resolveModelSpecEndpoint` to `librechat-data-provider`, inferring the agents endpoint when a preset names an agent and none is set. An explicit `endpoint` always wins, so configured specs are unaffected. - Use it for endpoint matching and in the selector, so the menu and the request pipeline resolve a spec identically. * 🔁 refactor: Materialize Inferred Spec Endpoints at Config Load The review showed the lazy-resolver approach was unsound end to end: config validation rejected an endpoint-less spec before the resolver could ever run (`tPresetSchema` requires the `endpoint` key), and the resolver was applied at 2 of ~8 read sites, leaving selection handlers, startup presets, access filters, and provider-key reachability reading the raw preset. Materialize once at the boundary instead: - `tModelSpecPresetSchema` now makes `endpoint` optional (`nullish`). This is barely a widening — `endpoint: null` already validated — and only for model-spec presets; `tPresetSchema` is untouched. - `materializeModelSpecEndpoints` writes each spec's resolved endpoint back onto its preset. `createAppConfigService` applies it at both effective-config assembly points — YAML base load and DB-override merge — so admin-panel specs stored in override documents are covered. Identity-preserving, so cached configs see no new references when nothing needs filling in. - Every consumer now reads complete specs; the client's lazy resolve in `handleSelectSpec` is reverted to a raw read. `getModelSpecPreset` and the two hand-rolled preset constructions resolve the endpoint explicitly, which the narrowed preset type now enforces at compile time for any `TPreset`-shaped destination. - `isModelSpecEndpointMatch` keeps the resolver as request-time defense. * 🩹 fix: Materialize Spec Endpoints Before the YAML Missing-Endpoint Guard `processModelSpecs` warns and skips any spec whose preset lacks an endpoint, and it runs inside `loadBaseConfig` — so the previous commit's materialization received a YAML list from which the inferable spec had already been dropped. Only DB-override specs (merged after the guard) actually benefited. - Materialize at the entry of `processModelSpecs`, so inference happens before the guard and YAML agent specs survive it. The guard keeps skipping genuinely endpoint-less specs. The `createAppConfigService` calls stay: the base-path one guards alternate `loadBaseConfig` implementations, the merged-path one covers override documents, and both are identity-preserving no-ops when specs are already complete. - Constrain the widened schema: omitting `endpoint` is only legal when the preset names an `agent_id`. A preset with neither validated as a hard error before the key became optional, and silently accepting it would trade that startup-time error for a dead spec. An explicit `endpoint: null` (valid before this PR) keeps validating. * 🩹 fix: Infer Only From Non-Empty Agent IDs, Never Over Explicit Null Two edge cases in the inference contract: - `agent_id: ''` (what a form-backed writer persists for an untouched field) passed the nullish checks, validating and materializing a spec that names no agent. Both the refinement and the resolver now require a non-empty id, so such config fails validation loudly instead of producing a selectable spec that cannot work. - `endpoint: null` alongside an `agent_id` was treated as inferable, silently activating a spec that validated — and was skipped — before this PR. An explicit null is a statement, not an omission: the resolver now infers only when the key is absent, preserving prior behavior for previously valid configs. |
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