refactor: complete v2 refactoring plan (Phases 1-5)

Phase 1 — Quick Wins: centralize formatMoney/formatCents, extract
findUniqueOrThrow helper (19 routers), shared Prisma select constants,
useInvalidatePlanningViews hook, status badge consolidation, composite
DB indexes.

Phase 2 — Timeline Split: extract TimelineContext, TimelineResourcePanel,
TimelineProjectPanel; split 28-dep useMemo into 3 focused memos.
TimelineView.tsx reduced from 1,903 to 538 lines.

Phase 3 — Query Performance: server-side filtering for getEntriesView,
remove availability from timeline resource select, SSE event debouncing
(50ms batch window).

Phase 4 — Estimate Workspace: extract 7 tab components and 3 editor
components. EstimateWorkspaceClient 1,298→306 lines,
EstimateWorkspaceDraftEditor 1,205→581 lines.

Phase 5 — Package Cleanup: split commit-dispo-import-batch (1,112→573
lines), extract shared pagination helper with 11 tests.

All tests pass: 209 API, 254 engine, 67 application.

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

packages/db/prisma/schema.prisma

@@ -848,6 +848,7 @@ model EstimateVersion {
   notes            String?
   lockedAt         DateTime?
   projectSnapshot  Json                  @db.JsonB @default("{}")
+  commercialTerms  Json?                 @db.JsonB
 
   estimate         Estimate              @relation(fields: [estimateId], references: [id], onDelete: Cascade)
   assumptions      EstimateAssumption[]
@@ -1170,6 +1171,7 @@ model DemandRequirement {
   @@index([projectId])
   @@index([startDate, endDate])
   @@index([status])
+  @@index([projectId, status, startDate])
   @@map("demand_requirements")
 }
 
@@ -1202,6 +1204,8 @@ model Assignment {
   @@index([projectId])
   @@index([startDate, endDate])
   @@index([status])
+  @@index([resourceId, status, startDate])
+  @@index([projectId, startDate, endDate])
   @@map("assignments")
 }
 
@@ -1233,6 +1237,7 @@ model Vacation {
   @@index([resourceId])
   @@index([startDate, endDate])
   @@index([status])
+  @@index([resourceId, status, startDate, endDate])
   @@map("vacations")
 }
 
@@ -1297,6 +1302,12 @@ model SystemSettings {
   smtpPassword            String?
   smtpFrom                String?
   smtpTls                 Boolean? @default(true)
+  // Global viewer-side anonymization
+  anonymizationEnabled    Boolean? @default(false)
+  anonymizationDomain     String?  @default("superhartmut.de")
+  anonymizationSeed       String?
+  anonymizationMode       String?  @default("global")
+  anonymizationAliases    Json?    @db.JsonB
   // Vacation defaults
   vacationDefaultDays     Int?     @default(28)  // default annual entitlement
   updatedAt               DateTime @updatedAt