debug: add M5 debug logging for assignee trigger

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/entrypoints/run.ts

@@ -187,6 +187,24 @@ async function run() {
       }
     }
 
+    // === M5 DEBUG START ===
+    console.log(`[M5 DEBUG] eventName: ${context.eventName}`);
+    console.log(`[M5 DEBUG] eventAction: ${context.eventAction}`);
+    console.log(
+      `[M5 DEBUG] assigneeTrigger: "${context.inputs?.assigneeTrigger}"`,
+    );
+    console.log(
+      `[M5 DEBUG] ASSIGNEE_TRIGGER env: "${process.env.ASSIGNEE_TRIGGER}"`,
+    );
+    if (isEntityContext(context)) {
+      const payload = context.payload as Record<string, any>;
+      console.log(
+        `[M5 DEBUG] payload.assignee: ${JSON.stringify(payload.assignee)}`,
+      );
+      console.log(`[M5 DEBUG] payload.action: ${payload.action}`);
+    }
+    // === M5 DEBUG END ===
+
     // Check trigger conditions
     const containsTrigger =
       modeName === "tag"