feat: add initial application structure with configuration, UI components, and state management

composables/useCoverage.ts

@@ -0,0 +1,25 @@
+/**
+ * Computes coverage: funded paid hours ÷ target hours
+ */
+export const useCoverage = () => {
+  const calculateCoverage = (fundedPaidHours: number, targetHours: number): number => {
+    if (targetHours <= 0) return 0
+    return (fundedPaidHours / targetHours) * 100
+  }
+  
+  const getCoverageStatus = (coveragePct: number): 'green' | 'yellow' | 'red' => {
+    if (coveragePct >= 80) return 'green'
+    if (coveragePct >= 60) return 'yellow'
+    return 'red'
+  }
+  
+  const formatCoverage = (coveragePct: number): string => {
+    return `${Math.round(coveragePct)}%`
+  }
+  
+  return {
+    calculateCoverage,
+    getCoverageStatus,
+    formatCoverage
+  }
+}