fix: restore model-level base url contract (#70340)

docs/.generated/config-baseline.sha256

@@ -1,4 +1,4 @@
-d36bf1b6891ead1fb8c34604c0f0ec784a6c8e295293208af115a289c815aea4  config-baseline.json
-e5e5d4cdfe6c084493a3aca0baa23fd993a9e47a6be4410c9d8ebd75310da9a1  config-baseline.core.json
+81a8a7de5d4bf02cf3e697a641fe89844f98ed58d47890f12800181fde5a97b1  config-baseline.json
+dab963eda8866b8bffd5c9032f92f0f6b08ed54dda837f1f5c513fca5d2c78e9  config-baseline.core.json
 35d132fe176bd2bf9f0e46b29de91baba63ec4db3317cc5b294a982b46d16ba9  config-baseline.channel.json
 71b5ff17041bc48a62300ad9f44fa8bb14d9dcd7f4c3549c0576d3059ce6ff36  config-baseline.plugin.json

src/config/schema.base.generated.ts

@@ -2734,6 +2734,10 @@ export const GENERATED_BASE_CONFIG_SCHEMA: BaseConfigSchemaResponse = {
                           "azure-openai-responses",
                         ],
                       },
+                      baseUrl: {
+                        type: "string",
+                        minLength: 1,
+                      },
                       reasoning: {
                         type: "boolean",
                       },
@@ -27672,6 +27676,9 @@ export const GENERATED_BASE_CONFIG_SCHEMA: BaseConfigSchemaResponse = {
       sensitive: true,
       tags: ["security", "auth"],
     },
+    "models.providers.*.models[].baseUrl": {
+      tags: ["models", "url-secret"],
+    },
     "agents.list[].memorySearch.remote.baseUrl": {
       tags: ["advanced", "url-secret"],
     },

src/config/types.models.ts

@@ -54,6 +54,7 @@ export type ModelDefinitionConfig = {
   id: string;
   name: string;
   api?: ModelApi;
+  baseUrl?: string;
   reasoning: boolean;
   input: Array<"text" | "image">;
   cost: {

src/config/zod-schema.core.ts

@@ -308,6 +308,7 @@ export const ModelDefinitionSchema = z
     id: z.string().min(1),
     name: z.string().min(1),
     api: ModelApiSchema.optional(),
+    baseUrl: z.string().min(1).optional(),
     reasoning: z.boolean().optional(),
     input: z.array(z.union([z.literal("text"), z.literal("image")])).optional(),
     cost: z