Refactor Slim UI pace rendering and fix pace color path

[rygel]

Summary

Fixes the Beta Seven pace-color regression where cards stayed yellow by applying pace-aware color logic in the live render path, then refactors the Slim UI rendering architecture to reduce duplicate logic.

Changes

• Fix MainWindow card color path to use pace-adjusted color indicator when period/reset metadata is present.
• Ensure period metadata enrichment supports rolling and model-specific windows for synthetic aggregate children.
• Add centralized pace policy catalog used by both MainWindow and ViewModel paths.
• Add a single display-catalog pipeline method for main-window usage list construction.
• Extract imperative provider/sub-provider card rendering from MainWindow into ProviderCardRenderer.
• Remove duplicate card-render helper methods from MainWindow code-behind.

Why

• Eliminates split pace logic across multiple paths.
• Makes rendering behavior consistent and easier to reason about.
• Reduces bug surface from duplicated UI decision logic.

[github-actions]

Build Performance Report

⏱️ Build Time: 12 minutes

📊 Comparison with main branch:

• Baseline (avg): 10 minutes
• Current: 12 minutes
• Change: 📈 20%

✅ Within acceptable range

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This is an automated performance check

[github-actions]

Build Performance Report

⏱️ Build Time: 12 minutes

📊 Comparison with main branch:

• Baseline (avg): 10 minutes
• Current: 12 minutes
• Change: 📈 20%

✅ Within acceptable range

---

This is an automated performance check

[github-actions]

Build Performance Report

⏱️ Build Time: 12 minutes

📊 Comparison with main branch:

• Baseline (avg): 10 minutes
• Current: 12 minutes
• Change: 📈 20%

✅ Within acceptable range

---

This is an automated performance check