Clarify model AIC chart units

[asizikov]

Summary

Clarifies the Models view so the average chart is presented as AICs per PRU rather than AICs per request. This avoids implying that PRU-normalized report quantities are directly comparable to actual request counts across models.

Changes

Commit	Change
fix: clarify model AIC chart units	Relabeled the model average and volume charts to use PRU terminology and added a note that PRU quantities include billing-period model multipliers.

Testing

• npm run lint -- --quiet
• npm run test
• npm run build

Checklist

• Specs lint passes (npm run lint)
• Tests updated if applicable
• Documentation updated if applicable

[Copilot]

Pull request overview

Clarifies the Models view’s charts by relabeling request-derived metrics as PRU-normalized (Premium Request Units) and adding an explanatory note so readers don’t conflate PRU quantities with actual request counts when comparing models.

Changes:

• Relabeled the daily average AIC chart from “per request” to “per PRU”.
• Renamed the daily volume chart from “Requests” to “PRUs” and adjusted series labeling accordingly.
• Added a note explaining that PRU quantities include model multipliers and aren’t directly comparable to raw request counts across models.

Show a summary per file

File	Description
src/views/ModelsView.tsx	Updates chart titles/labels to PRU terminology and adds a clarifying note about PRU multipliers.

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• Files reviewed: 1/1 changed files
• Comments generated: 2