feat(aiCommitExt): add user-suggested commit-message refinement

src/opencodeService.ts

@@ -5,6 +5,7 @@ import { output } from "./extension";
 
 export interface GenerateOptions {
     model?: string;
+    userSuggestion?: string;
 }
 
 let opencodeAvailableCache: boolean | null = null;
@@ -47,12 +48,27 @@ export async function generateCommitMessage(
     const config = vscode.workspace.getConfiguration("aiCommitExt");
     const model = options.model || config.get<string>("model", "");
 
-    const prompt = `${DEFAULT_PROMPT}
+    let prompt: string;
+    if (options.userSuggestion) {
+        prompt = `The user suggested: "${options.userSuggestion}"
+
+Improve this commit message to be concise and follow Conventional Commit format.
+Format: <type>(<scope>): <description>
+Max 72 characters for the subject line.
+Types: feat, fix, refactor, docs, style, test, chore, perf, ci, build, revert
+
+Here are the git changes:
+${diff}
+
+Only output the improved commit message, nothing else.`;
+    } else {
+        prompt = `${DEFAULT_PROMPT}
 
 Here are the git changes:
 ${diff}
 
 Generate a concise Conventional Commit message for these changes:`;
+    }
 
     const log = `[${Date.now()}]\r\n${prompt}`;
     output.appendLine(log);