fix(pi-pi): truncate widget message to terminal width

[dwainm]

Problem

The 'No experts found' message in the pi-pi widget render was causing a TUI crash on narrow terminals:

Error: Rendered line 62 exceeds terminal width (60 > 49)

This occurred when the terminal width was less than the message length.

Solution

Wrap the message with truncateToWidth() to ensure it fits within the available width:

// Before
return ["", theme.fg("dim", "  No experts found...")];

// After  
return ["", truncateToWidth(theme.fg("dim", "  No experts found..."), width, "")];

Testing

• Tested on terminal width 49 (previously crashed)
• Message now truncates gracefully instead of throwing