make genai provider required and add special case for UI

prevent validation errors from appearing on initial creation of genai provider by setting the first option in the select dropdown as default

frigate/config/camera/genai.py

@@ -41,8 +41,7 @@ class GenAIConfig(FrigateBaseModel):
         title="Model",
         description="The model to use from the provider for generating descriptions or summaries.",
     )
-    provider: GenAIProviderEnum | None = Field(
-        default=None,
+    provider: GenAIProviderEnum = Field(
         title="Provider",
         description="The GenAI provider to use (for example: ollama, gemini, openai).",
     )

web/src/components/config-form/sections/section-special-cases.ts

@@ -15,7 +15,7 @@ import { JsonObject, JsonValue } from "@/types/configForm";
  * Sections that require special handling at the global level.
  * Add new section paths here as needed.
  */
-const SPECIAL_CASE_SECTIONS = ["motion", "detectors"] as const;
+const SPECIAL_CASE_SECTIONS = ["motion", "detectors", "genai"] as const;
 
 /**
  * Check if a section requires special case handling.
@@ -53,6 +53,29 @@ export function modifySchemaForSection(
     return schemaWithoutDefault;
   }
 
+  if (sectionPath === "genai") {
+    const additional = schema.additionalProperties;
+    if (
+      additional &&
+      typeof additional === "object" &&
+      !Array.isArray(additional)
+    ) {
+      const props = (additional as RJSFSchema).properties;
+      if (props && typeof props.provider === "object") {
+        return {
+          ...schema,
+          additionalProperties: {
+            ...additional,
+            properties: {
+              ...props,
+              provider: { ...(props.provider as object), default: "openai" },
+            },
+          },
+        };
+      }
+    }
+  }
+
   return schema;
 }