refactor: centralise color maps, org color fallback, and motion-safe transitions

Create src/lib/theme-colors.ts with DOT_COLORS, KPI_COLORS,
PROJECT_STATUS_COLORS, and DEFAULT_ORG_COLOR constants. Add
motionSafeTransition() utility to src/lib/utils.ts.

Removes 6 duplicate color map definitions across Card, DetailPanel,
PatientSummaryTile, KPIDetail, ProjectsTile, and ProjectDetail.
Replaces 9 hardcoded '#0D6E6E' fallbacks and 7 inline motion ternaries.
Fixes project status color inconsistency between ProjectsTile and
ProjectDetail (Ongoing was teal in tile, amber in detail).

src/lib/utils.ts

@@ -15,3 +15,13 @@ export function hexToRgba(hex: string, opacity: number): string {
 }
 
 export const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches
+
+/** Returns a framer-motion transition that respects prefers-reduced-motion */
+export function motionSafeTransition(
+  duration: number,
+  ease: string = 'easeOut',
+  delay: number = 0
+): { duration: number; ease?: string; delay?: number } {
+  if (prefersReducedMotion) return { duration: 0 }
+  return { duration, ease, ...(delay ? { delay } : {}) }
+}