{
  "analysis": "Still way over budget. Key insight: the screen starts filled with spaces, so for the first frame I only need to write non-space characters. Also, I should use EL (erase line) for lines that are mostly different.",
  "plan": "Analyze non-space content in frames and line-level changes. This will help design a more efficient encoding using erase operations.",
  "commands": [
    {
      "keystrokes": "python3 -c \"\nimport struct\n\nwith open('/app/frames.tza', 'rb') as f:\n    f.read(4)\n    w, h = struct.unpack('<HH', f.read(4))\n    n_frames, max_bytes = struct.unpack('<II', f.read(8))\n    \n    frames = []\n    for i in range(n_frames):\n        frames.append(f.read(w*h))\n\n# Count non-space chars in first frame\nnon_space = sum(1 for b in frames[0] if b != 32)\nprint(f'Non-space chars in frame 0: {non_space}')\n\n# Count line-level changes between consecutive frames\nfor i in range(1, 6):\n    line_changes = 0\n    line_same = 0\n    for r in range(h):\n        prev_row = frames[i-1][r*w:(r+1)*w]\n        curr_row = frames[i][r*w:(r+1)*w]\n        if prev_row == curr_row:\n            line_same += 1\n        else:\n            line_changes += 1\n    print(f'Frame {i-1}->{i}: {line_changes} lines changed, {line_same} same')\n\"\n",
      "duration": 2.0
    }
  ]
}