fix: pass payload struct for regenerate/edit/download commands, edit button visibility

ui/src/api.ts

@@ -193,13 +193,16 @@ export const api = {
     conversationId: string,
     messageId: string,
     params: ChatParams,
-  ) => invoke<void>("regenerate_message", { conversationId, messageId, params }),
+  ) => invoke<void>("regenerate_message", { payload: { conversationId, messageId, params } }),
   editMessage: (
     conversationId: string,
     messageId: string,
     content: string,
     params: ChatParams,
-  ) => invoke<void>("edit_message", { conversationId, messageId, content, params }),
+  ) =>
+    invoke<void>("edit_message", {
+      payload: { conversationId, messageId, content, params },
+    }),
   listMessageVersions: (messageId: string) =>
     invoke<MessageVersion[]>("list_message_versions", { messageId }),
   applyMessageVersion: (
@@ -215,11 +218,13 @@ export const api = {
     source?: string,
   ) =>
     invoke<string>("download_enqueue", {
-      url,
-      fileName,
-      sha256: sha256 ?? null,
-      repoId: repoId ?? null,
-      source: source ?? null,
+      payload: {
+        url,
+        fileName,
+        sha256: sha256 ?? null,
+        repoId: repoId ?? null,
+        source: source ?? null,
+      },
     }),
   serverStart: (port: number, apiKey: string) =>
     invoke<ServerStatus>("server_start", { port, apiKey }),

ui/src/pages/ChatPage.tsx

@@ -718,15 +718,19 @@ function MessageBubble({
         ) : isUser ? (
           <>
             <div className="whitespace-pre-wrap">{message.content}</div>
-            {!streaming ? (
+            <div
+              className={`mt-1 flex justify-end transition-opacity ${
+                streaming ? "opacity-0" : "opacity-0 group-hover:opacity-100"
+              }`}
+            >
               <button
-                className="absolute -left-8 top-2 hidden rounded p-1 text-slate-500 hover:text-slate-200 group-hover:block"
+                className="rounded px-1.5 py-0.5 text-[10px] text-white/60 hover:bg-white/10 hover:text-white"
                 onClick={() => onEditStart(message)}
-                title="编辑并重新提交"
+                title="编辑并重新提交（清空之后的生成）"
               >
-                ✎
+                编辑
               </button>
-            ) : null}
+            </div>
           </>
         ) : message.content ? (
           <ReactMarkdown remarkPlugins={[remarkGfm]}>{message.content}</ReactMarkdown>