refactor: consolidate duplicated code across web and API packages

- Extract shared render helpers (vacation blocks, range overlay, overbooking blink) into renderHelpers.tsx
- Centralize status badge styles and vacation color maps into status-styles.ts
- Extract dragMath.ts utility from useTimelineDrag for reuse
- Split useInvalidatePlanningViews into useInvalidateTimeline (4 queries) + useInvalidatePlanningViews (8 queries)
- Adopt findUniqueOrThrow() and Prisma select constants across API routers
- Add shared fmtEur() helper for API-side money formatting
- Wrap TimelineResourcePanel and TimelineProjectPanel with React.memo
- Fix pre-existing TS2589 deep type errors in TeamCalendar and VacationModal
- 38 files changed, reducing ~400 lines of duplicated code

Co-Authored-By: claude-flow <ruv@ruv.net>

apps/web/src/app/(app)/resources/ResourcesClient.tsx

@@ -7,6 +7,7 @@ import type { Resource, SkillEntry } from "@planarchy/shared";
 import { RESOURCE_COLUMNS } from "@planarchy/shared";
 import { BlueprintTarget, ResourceType } from "@planarchy/shared";
 import { trpc } from "~/lib/trpc/client.js";
+import { formatMoney } from "~/lib/format.js";
 import { ResourceModal } from "~/components/resources/ResourceModal.js";
 import { ImportModal } from "~/components/resources/ImportModal.js";
 import { BulkEditModal } from "~/components/resources/BulkEditModal.js";
@@ -1175,7 +1176,7 @@ export function ResourcesClient() {
                                 key={col.key}
                                 className="px-4 py-3 text-sm text-gray-900 dark:text-gray-100"
                               >
-                                {(resource.lcrCents / 100).toFixed(0)} {resource.currency}
+                                {formatMoney(resource.lcrCents, resource.currency)}
                               </td>
                             );
                           case "chargeability": {