Previous response had warnings:
WARNINGS: - Extra text detected before JSON object
- Extra text detected after JSON object

New Terminal Output:

root@d7299c7f5982:/app# python3 -c "
> import struct
> with open('/app/frames.tza', 'rb') as f:
>     magic = f.read(4)
>     width, height = struct.unpack('<HH', f.read(4))
>     n_frames, max_bytes = struct.unpack('<II', f.read(8))
>     frames = [f.read(width * height) for _ in range(n_frames)]
>
> # Simulate first frame navigation
> prev = b' ' * (width * height)
> frame = frames[0]
>
> # Find runs
> runs = []
> i = 0
> while i < width * height:
>     if prev[i] != frame[i]:
>         start = i
>         while i < width * height and prev[i] != frame[i]:
>             i += 1
>         runs.append((start, i - start))
>     else:
>         i += 1
>
> print('Simulating navigation for frame 0:')
> cur_row, cur_col = 0, 0
> nav_cost = 0
> char_cost = 0
>
> for j, (start, length) in enumerate(runs[:10]):
>     target_row = start // width
>     target_col = start % width
>
>     # Calculate movement
>     if target_row > cur_row:
>         nav_cost += target_row - cur_row  # \n bytes
>         cur_row = target_row
>         cur_col = 0  # \n resets column
>     elif target_row < cur_row:
>         nav_cost += len(f'\033[{cur_row - target_row}A')
>         cur_row = target_row
>
>     if target_col != cur_col:
>         if target_col < cur_col:
>             nav_cost += cur_col - target_col  # backspace
>         else:
>             dist = target_col - cur_col
>             nav_cost += len(f'\033[{dist}C')
>         cur_col = target_col
>
>     char_cost += length
>     cur_col += length
>     if cur_col >= width:
>         cur_col = 0
>         cur_row += 1
>
>     print(f'Run {j}: ({start//width},{start%width}) len={length}, nav={nav_cost}, chars={char_cost}')
>
> print(f'\nTotal after 10 runs: nav={nav_cost}, chars={char_cost}')
> "
Simulating navigation for frame 0:
Run 0: (0,0) len=12, nav=0, chars=12
Run 1: (0,13) len=1, nav=4, chars=13
Run 2: (0,15) len=9, nav=8, chars=22
Run 3: (0,25) len=6, nav=12, chars=28
Run 4: (0,32) len=5, nav=16, chars=33
Run 5: (0,38) len=5, nav=20, chars=38
Run 6: (1,0) len=6, nav=21, chars=44
Run 7: (1,7) len=6, nav=25, chars=50
Run 8: (1,14) len=6, nav=29, chars=56
Run 9: (1,21) len=34, nav=33, chars=90

Total after 10 runs: nav=33, chars=90
root@d7299c7f5982:/app#
