Normalize touch X coordinates so left taps navigate to previous page

[Codex]

Left-side taps were interpreted as “next” because absolute touch coordinates started above zero; navigation should treat the screen midpoint as the divider.

• Touch width parsing now returns both width and minimum X to normalize device coordinates before tap handling.
• Tap handling clamps and offsets X values against the detected minimum, ensuring midpoint comparison is accurate for PREV vs NEXT.
• Initial touch state uses the normalized center to avoid bias toward the right side.

Example:

device_touch_width, device_touch_min = detect_touch_width(device, touch_width)
relative_x = max(0, min(tap_x - device_touch_min, device_touch_width - 1))
cmd_q.put("PREV" if relative_x < (device_touch_width // 2) else "NEXT")

Original prompt

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This section details on the original issue you should resolve

<issue_title>Touch left side of screen - script to display previous page</issue_title>
<issue_description>STILL NOT WORKING AT ALL, IT DISPLAYS THE NEXT PAGE SAME AS RIGHT SIDE! #2 </issue_description>

Comments on the Issue (you are @codex[agent] in this section)

• Fixes Touch left side of screen - script to display previous page #31

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