From d573b167d3a26e97ff2e584019ab0c2a3ba6f8b0 Mon Sep 17 00:00:00 2001
From: Takaki Sato <96252494+takakisatojp@users.noreply.github.com>
Date: Fri, 7 Aug 2026 23:55:20 +0900
Subject: [PATCH] fix: support labeled action for pull_request events in
 track_progress (#1586)

Adds "labeled" to the valid pull_request actions for track_progress,
mirroring the existing support for issue events. Previously, adding
a label to a PR (e.g. to trigger a label-driven Claude review) would
fail validation even though the same pattern works for issues.

Fixes #1585
---
 action.yml                  |  2 +-
 src/modes/detector.ts       |  1 +
 test/modes/detector.test.ts | 14 ++++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index f48353f0..f72e9877 100644
--- a/action.yml
+++ b/action.yml
@@ -134,7 +134,7 @@ inputs:
     required: false
     default: "claude[bot]"
   track_progress:
-    description: "Force tag mode with tracking comments for pull_request and issue events. Only applicable to pull_request (opened, synchronize, ready_for_review, reopened) and issue (opened, edited, labeled, assigned) events."
+    description: "Force tag mode with tracking comments for pull_request and issue events. Only applicable to pull_request (opened, synchronize, ready_for_review, reopened, labeled) and issue (opened, edited, labeled, assigned) events."
     required: false
     default: "false"
   include_fix_links:
diff --git a/src/modes/detector.ts b/src/modes/detector.ts
index c15ce88a..46e13665 100644
--- a/src/modes/detector.ts
+++ b/src/modes/detector.ts
@@ -103,6 +103,7 @@ function validateTrackProgressEvent(context: GitHubContext): void {
       "synchronize",
       "ready_for_review",
       "reopened",
+      "labeled",
     ];
     if (!validActions.includes(context.eventAction)) {
       throw new Error(
diff --git a/test/modes/detector.test.ts b/test/modes/detector.test.ts
index 3b58f9e9..6c249745 100644
--- a/test/modes/detector.test.ts
+++ b/test/modes/detector.test.ts
@@ -76,6 +76,20 @@ describe("detectMode with enhanced routing", () => {
       expect(detectMode(context)).toBe("agent");
     });
 
+    it("should use tag mode when track_progress is true for pull_request.labeled", () => {
+      const context: GitHubContext = {
+        ...baseContext,
+        eventName: "pull_request",
+        eventAction: "labeled",
+        payload: { pull_request: { number: 1 } } as any,
+        entityNumber: 1,
+        isPR: true,
+        inputs: { ...baseContext.inputs, trackProgress: true },
+      };
+
+      expect(detectMode(context)).toBe("tag");
+    });
+
     it("should throw error when track_progress is used with unsupported PR action", () => {
       const context: GitHubContext = {
         ...baseContext,