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/resource-owned-read-access.ts

@@ -1,11 +1,11 @@
 import { TRPCError } from "@trpc/server";
+import { isAdminOrManager } from "@capakraken/shared";
 import type { TRPCContext } from "../trpc.js";
 
 export type OwnedResourceReadContext = Pick<TRPCContext, "db" | "dbUser">;
 
 export function canManageOwnedResourceReads(ctx: { dbUser: { systemRole: string } | null }): boolean {
-  const role = ctx.dbUser?.systemRole;
-  return role === "ADMIN" || role === "MANAGER";
+  return isAdminOrManager(ctx.dbUser?.systemRole);
 }
 
 export async function findOwnedReadResourceId(