feat: timeline UI overhaul with project/resource panel redesign, quick filters, and API improvements

Redesigned timeline project and resource panels with expanded detail views,
added quick filter toolbar, improved drag handling, and enhanced vacation/entitlement
router logic. Includes e2e test updates and minor API fixes.

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

packages/api/src/router/project-planning-read-model.ts

@@ -19,6 +19,7 @@ export const PROJECT_PLANNING_ALLOCATION_INCLUDE = {
       name: true,
       shortCode: true,
       orderType: true,
+      clientId: true,
       budgetCents: true,
       winProbability: true,
       status: true,