feat(timeline): add pulse animation for in-flight drag mutations

Allocation bars that have active optimistic overrides (post-drag,
awaiting server confirmation) now pulse subtly via animate-pulse.
The pending set is derived from the existing optimisticAllocations
map keys, requiring no additional state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/application/src/lib/resource-capacity.ts

@@ -1,7 +1,5 @@
 import { VacationStatus } from "@capakraken/db";
-import { getPublicHolidays, type WeekdayAvailability } from "@capakraken/shared";
-
-const MILLISECONDS_PER_DAY = 86_400_000;
+import { getPublicHolidays, toIsoDate, MILLISECONDS_PER_DAY, DAY_KEYS, normalizeCityName, normalizeStateCode, type WeekdayAvailability } from "@capakraken/shared";
 
 type CalendarScope = "COUNTRY" | "STATE" | "CITY";
 
@@ -54,16 +52,6 @@ type ResourceCapacityDbClient = {
   };
 };
 
-const DAY_KEYS: (keyof WeekdayAvailability)[] = [
-  "sunday",
-  "monday",
-  "tuesday",
-  "wednesday",
-  "thursday",
-  "friday",
-  "saturday",
-];
-
 const CITY_HOLIDAY_RULES: Array<{
   countryCode: string;
   cityName: string;
@@ -76,20 +64,6 @@ const CITY_HOLIDAY_RULES: Array<{
   },
 ];
 
-function toIsoDate(value: Date): string {
-  return value.toISOString().slice(0, 10);
-}
-
-function normalizeCityName(cityName?: string | null): string | null {
-  const normalized = cityName?.trim().toLowerCase();
-  return normalized && normalized.length > 0 ? normalized : null;
-}
-
-function normalizeStateCode(stateCode?: string | null): string | null {
-  const normalized = stateCode?.trim().toUpperCase();
-  return normalized && normalized.length > 0 ? normalized : null;
-}
-
 export function getAvailabilityHoursForDate(
   availability: WeekdayAvailability,
   date: Date,