fix-observelisted

# Observe (三步法 Step 1) When user reports a problem: 1. Read the error message carefully (if provided) 2. If user sent a screenshot, use vision to read it precisely 3. If no error message, ask user: "你看到了什么？是白屏、还是报错、还是显示的内容不对？" (ask for screenshot if possible) 4. Reproduce the problem yourself if possible 5. Record exactly what happens vs what should happen DO NOT jump to fixing. First understand what's actually wrong. Output: a clear internal description of the symptom.