feat(finale): per-project presentation/Q&A durations in m:ss + config-save merge fix

- setProjectTiming stores per-project overrides in round config; phase starts
  resolve: explicit input > project override > round default
- Run Order rows get m:ss inputs per project; PhaseControls one-off overrides
  now also m:ss (shared parseClock: '7:30', '12:05', plain '7')
- CRITICAL: round.update now MERGES validated form config over the existing
  configJson — saving the Config tab was wiping projectOrder (would have
  destroyed a running ceremony) and the finals-docs upload toggle

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/unit/round-config-merge.test.ts

@@ -0,0 +1,58 @@
+/**
+ * Regression: saving the round Config form must NOT wipe operational keys that
+ * live outside the form schema (ceremony projectOrder, per-project timing
+ * overrides, finals-docs upload toggle). Found live: a Config save mid-test
+ * destroyed the running ceremony's run order.
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest'
+import { prisma, createCaller } from '../setup'
+import {
+  createTestUser,
+  createTestProgram,
+  createTestCompetition,
+  createTestRound,
+  cleanupTestData,
+} from '../helpers'
+import { roundRouter } from '@/server/routers/round'
+
+let program: any
+let round: any
+let admin: any
+let adminCaller: ReturnType<typeof createCaller>
+
+beforeAll(async () => {
+  program = await createTestProgram()
+  const competition = await createTestCompetition(program.id)
+  round = await createTestRound(competition.id, {
+    roundType: 'LIVE_FINAL',
+    status: 'ROUND_ACTIVE',
+    configJson: {
+      presentationDurationMinutes: 5,
+      projectOrder: ['p-one', 'p-two'],
+      projectTimingOverrides: { 'p-one': { presentationSeconds: 480 } },
+      allowFinalistRevisedUploads: true,
+    },
+  })
+  admin = await createTestUser('SUPER_ADMIN')
+  adminCaller = createCaller(roundRouter, admin)
+})
+
+afterAll(async () => {
+  await cleanupTestData(program.id, [admin.id])
+})
+
+describe('round.update configJson merge', () => {
+  it('updates form fields without wiping operational keys', async () => {
+    await adminCaller.update({
+      id: round.id,
+      configJson: { presentationDurationMinutes: 10, qaDurationMinutes: 3 },
+    })
+    const updated = await prisma.round.findUniqueOrThrow({ where: { id: round.id } })
+    const cfg = updated.configJson as Record<string, unknown>
+    expect(cfg.presentationDurationMinutes).toBe(10) // form field applied
+    expect(cfg.qaDurationMinutes).toBe(3)
+    expect(cfg.projectOrder).toEqual(['p-one', 'p-two']) // ceremony state survives
+    expect((cfg.projectTimingOverrides as any)['p-one'].presentationSeconds).toBe(480)
+    expect(cfg.allowFinalistRevisedUploads).toBe(true) // finals-docs toggle survives
+  })
+})