fix: use snake_case keys inside nested command payloads

ui/src/api.ts

@@ -193,7 +193,10 @@ export const api = {
     conversationId: string,
     messageId: string,
     params: ChatParams,
-  ) => invoke<void>("regenerate_message", { payload: { conversationId, messageId, params } }),
+  ) =>
+    invoke<void>("regenerate_message", {
+      payload: { conversation_id: conversationId, message_id: messageId, params },
+    }),
   editMessage: (
     conversationId: string,
     messageId: string,
@@ -201,7 +204,12 @@ export const api = {
     params: ChatParams,
   ) =>
     invoke<void>("edit_message", {
-      payload: { conversationId, messageId, content, params },
+      payload: {
+        conversation_id: conversationId,
+        message_id: messageId,
+        content,
+        params,
+      },
     }),
   listMessageVersions: (messageId: string) =>
     invoke<MessageVersion[]>("list_message_versions", { messageId }),
@@ -220,9 +228,9 @@ export const api = {
     invoke<string>("download_enqueue", {
       payload: {
         url,
-        fileName,
+        file_name: fileName,
         sha256: sha256 ?? null,
-        repoId: repoId ?? null,
+        repo_id: repoId ?? null,
         source: source ?? null,
       },
     }),