fix: add reaction immediately for quick user feedback

Move the reaction step to happen right after Octokit initialization,
before any other processing or API calls. This ensures users get
immediate visual feedback that their comment is being processed.

Author: Tulga Tsogtgerel

assistant/src/index.ts

@@ -434,17 +434,18 @@ async function main(): Promise<void> {
     const reaction = validateReaction(reactionInput);
     const { owner, repo } = parseRepository();
 
-    core.info(`🎯 Starting PR Assistant for comment ${commentId}`);
-    core.info(`📦 Repository: ${owner}/${repo}`);
-    core.info(`📝 Event: ${eventName}`);
-
     // Create Octokit instance
     const octokit = new Octokit({ auth: githubToken });
 
-    // Step 1: Add reaction to show we're processing
-    core.info('👀 Adding reaction to comment...');
+    // Step 1: Add reaction IMMEDIATELY to give user quick feedback
+    core.info('👀 Adding reaction to comment for quick feedback...');
     await addReaction(octokit, owner, repo, commentId, eventName, reaction);
 
+    // Now start the actual processing
+    core.info(`🎯 Starting PR Assistant for comment ${commentId}`);
+    core.info(`📦 Repository: ${owner}/${repo}`);
+    core.info(`📝 Event: ${eventName}`);
+
     // Step 2: Get PR number
     core.info('🔍 Finding associated PR...');
     const prNumber = await getPRNumber(octokit, owner, repo, commentId, eventName);