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/api/src/router/vacation-create-support.ts

@@ -1,5 +1,6 @@
 import { VacationStatus, VacationType } from "@capakraken/db";
 import { TRPCError } from "@trpc/server";
+import { isAdminOrManager } from "@capakraken/shared";
 import { z } from "zod";
 import { RESOURCE_BRIEF_SELECT } from "../db/selects.js";
 import { emitVacationCreated } from "../sse/event-bus.js";
@@ -76,7 +77,7 @@ export async function createVacationRequest(
     throw new TRPCError({ code: "UNAUTHORIZED" });
   }
 
-  const isManager = userRecord.systemRole === "ADMIN" || userRecord.systemRole === "MANAGER";
+  const isManager = isAdminOrManager(userRecord.systemRole);
   if (!isManager) {
     const resource = await ctx.db.resource.findUnique({
       where: { id: input.resourceId },