feat: add regenerate-different-message support

packages/opencode/src/commit-message/generate.ts

@@ -136,6 +136,11 @@ export async function generateCommitMessage(request: CommitMessageRequest): Prom
     temperature: 0.3,
   }
 
+  let userMessage = buildUserMessage(ctx)
+  if (request.previousMessage) {
+    userMessage = `IMPORTANT: Generate a COMPLETELY DIFFERENT commit message from the previous one. The previous message was: "${request.previousMessage}". Use a different type, scope, or description approach.\n\n${userMessage}`
+  }
+
   const stream = await LLM.stream({
     agent,
     user: {
@@ -157,7 +162,7 @@ export async function generateCommitMessage(request: CommitMessageRequest): Prom
     messages: [
       {
         role: "user" as const,
-        content: buildUserMessage(ctx),
+        content: userMessage,
       },
     ],
     abort: new AbortController().signal,

packages/opencode/src/commit-message/types.ts

@@ -3,6 +3,8 @@ export interface CommitMessageRequest {
   path: string
   /** Optional subset of files to include */
   selectedFiles?: string[]
+  /** Previously generated message — when set, the LLM is asked to produce a different one */
+  previousMessage?: string
 }
 
 export interface CommitMessageResponse {