area/ui: Add an utilization metrics graph

[yomete]

No description provided.

[alwaysmeticulous]

✅ Meticulous spotted zero visual differences across 169 screens tested: view results.

Meticulous simulated ~4 hours of user flows against your PR.

_{Expected differences? Click here. Last updated for commit 5772ae3. This comment will update as new commits are pushed.}