[Bug] Progress bars display remaining quota instead of used quota

<img width="878" height="456" alt="Image" src="https://github.com/user-attachments/assets/83e1db7b-d3b6-491c-8901-2c7626ac24fe" />

Bug Description
Version: 2.0.50
Progress bars show remaining quota as used quota

Description:
The progress bars are inverted. The light purple/mauve color represents the used quota, but the bars are
displaying the remaining percentage as the filled (purple) portion instead of the used percentage.

Current behavior (incorrect):

• 94% left (6% used): Bar shows ~94% purple → should show only 6% purple
• 80% left (20% used): Bar shows ~80% purple → should show only 20% purple
• 98% left (2% used): Bar shows ~2% purple → this one appears correct

Expected behavior:
If purple = used quota:

• "94% left" → 6% used → 6% purple, 94% dark
• "80% left" → 20% used → 20% purple, 80% dark
• "98% left" → 2% used → 2% purple, 98% dark

The issue:
The bars are currently filling the purple portion with the remaining percentage value instead of the used
percentage value.

Fix needed:
// Current (wrong):
purple_width = remaining_percentage

// Should be:
purple_width = 100 - remaining_percentage
// or
purple_width = used_percentage

The calculation is inverted - it's using the "% left" value directly to fill the purple bar, when it should be
using (100 - "% left").

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 2.0.50
• Feedback ID: ff476eea-8850-4b0f-8ceb-5fa8bd392a9c