The output is 302,450 bytes, which is way over the 69,000 byte budget. I need to optimize significantly by:
1. Not resetting cursor to (1,1) between frames
2. Grouping consecutive changes on the same row
3. Using relative cursor movements when beneficial

Let me rewrite with better optimization:

```json
{
  "analysis": "Current output is 302,450 bytes, but budget is only 69,000 bytes. The problem is I'm outputting a full cursor position before every changed character. I need to optimize by grouping consecutive changes and using relative movements.",
  "plan": "Rewrite the program with these optimizations:\n1. Track cursor across frame delimiters (don't reset to 1,1)\n2. Group changes by row and output runs of consecutive changes\n3. Use efficient cursor movements (relative when beneficial)",
  "commands": [
    {
      "keystrokes": "cat > /app/termzip_ansi.py << 'ENDOFFILE'\n#!/usr/bin/env python3\nimport struct\nimport sys\n\ndef read_tza(filename):\n    with open(filename, 'rb') as f:\n        magic = f.read(4)\n        if magic != b'TZA1':\n            raise ValueError(f'Invalid magic: {magic}')\n        width, height = struct.unpack('<HH', f.read(4))\n        n_frames, max_bytes = struct.unpack('<II', f.read(8))\n        frames = []\n        for _ in range(n_frames):\n            frame_data = f.read(width * height)\n            frames.append(frame_data)\n        return width, height, n_frames, max_bytes, frames\n\ndef main():\n    if len(sys.argv) != 2:\n        sys.stderr.write(f'Usage: {sys.argv[0]} <frames.tza>\\n')\n        sys.exit(1)\n    \n    filename = sys.argv[1]\n    width, height, n_frames, max_bytes, frames = read_tza(filename)\n    \n    prev_frame = b' ' * (width * height)\n    output = bytearray()\n    \n    # Track cursor position (1-indexed)\n    cur_row, cur_col = 1, 1\n    \n    def move_to(row, col):\n        nonlocal cur_row, cur_col, output\n        row, col = row + 1, col + 1  # Convert to 1-indexed\n        if row == cur_row and col == cur_col:\n            return\n        # Decide between absolute and relative movement\n        abs_cost = len(f'\\x1b[{row};{col}H')\n        # Calculate relative movement cost\n        rel_parts = []\n        if row > cur_row:\n            rel_parts.append(f'\\x1b[{row - cur_row}B')\n        elif row < cur_row:\n            rel_parts.append(f'\\x1b[{cur_row - row}A')\n        if col > cur_col:\n            rel_parts.append(f'\\x1b[{col - cur_col}C')\n        elif col < cur_col:\n            rel_parts.append(f'\\x1b[{cur_col - col}D')\n        rel_cost = sum(len(p) for p in rel_parts)\n        if rel_cost < abs_cost and rel_parts:\n            for p in rel_parts:\n                output.extend(p.encode())\n        else:\n            output.extend(f'\\x1b[{row};{col}H'.encode())\n        cur_row, cur_col = row, col\n    \n    for frame in frames:\n        # Find all changed positions and group by row\n        for r in range(height):\n            row_start = r * width\n            c = 0\n            while c < width:\n                pos = row_start + c\n                if prev_frame[pos] != frame[pos]:\n                    # Move to this position\n                    move_to(r, c)\n                    # Output consecutive changes\n                    while c < width and prev_frame[row_start + c] != frame[row_start + c]:\n                        output.append(frame[row_start + c])\n                        c += 1\n                        cur_col += 1\n                        if cur_col > width:\n                            cur_col = 1\n                            cur_row += 1\n                else:\n                    c += 1\n        # Frame delimiter\n        output.append(0x1e)\n        prev_frame = frame\n    \n    sys.stdout.buffer.write(output)\n\nif __name__ == '__main__':\n    main()\nENDOFFILE\n",
      "duration": 0.5
    },
    {
      "keystrokes": "python3 /app/termzip_ansi.py /app/frames.tza | wc -c\n",
      "duration": 2.0
    }
  ]
}
```