Compute weekly burn rate from current utilization and elapsed-in-week.

  • If projected end-of-week < 100%:  "↗ Projected end-of-week: %X"
  • If projected ≥ 100%:                "⚠ At this pace, limit in ~Yd Zh"
  • If already over:                    "⚠ Limit exceeded"

Skips the forecast when noise dominates: first hour of the week,
last ~5% of the week, or near-zero utilization.

Adds a ForecastView between the Sonnet row and the section separator.
Warning state is rendered in orange.