Integrate quota projection into menu card and provider detail rows

[kmatsunami]

Summary

Wire the projection contract and forecast-capable progress bar API into the actual usage rows so forecast becomes visible in the menu card and provider detail UI.

This issue is the end-to-end integration step. It decides when forecast is shown on real rows, but it must consume the outputs from #6, #5, and #4 instead of recreating them.

Scope

• Use the projection contract from #6 when a RateWindow has both windowMinutes and resetsAt.
• Feed forecast data into shared metric rows using the fields/helpers introduced in #4.
• Show the forecast overlay using the progress bar API introduced in #5.
• Show compact forecast copy next to the row without regressing existing pace information.
• Skip forecast for providers / rows that only expose textual reset descriptions and do not have enough timing info.

Non-goals

• No new forecast math.
• No new forecast formatting helpers.
• No new progress bar drawing primitives beyond using the API from #5.

Files likely involved

• Sources/CodexBar/MenuCardView.swift
• Sources/CodexBar/PreferencesProviderDetailView.swift
• Sources/CodexBar/StatusItemController+Menu.swift if shared wiring needs adjustment

Acceptance Criteria

• Forecast appears on real usage rows when timing info is available.
• Rows without concrete reset timing do not show guessed forecast.
• Forecast and pace can coexist without copy collisions or ambiguous semantics.
• Menu card and provider detail stay visually aligned.