feat: round finalization with ranking-based outcomes + award pool notifications

- processRoundClose EVALUATION uses ranking scores + advanceMode config
  (threshold vs count) to auto-set proposedOutcome instead of defaulting all to PASSED
- Advancement emails generate invite tokens for passwordless users with
  "Create Your Account" CTA; rejection emails have no link
- Finalization UI shows account stats (invite vs dashboard link counts)
- Fixed getFinalizationSummary ranking query (was using non-existent rankingsJson)
- New award pool notification system: getAwardSelectionNotificationTemplate email,
  notifyEligibleProjects mutation with invite token generation,
  "Notify Pool" button on award detail page with custom message dialog

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/server/utils/invite.ts

@@ -0,0 +1,25 @@
+import crypto from 'crypto'
+import type { PrismaClient } from '@prisma/client'
+
+const DEFAULT_INVITE_EXPIRY_HOURS = 72 // 3 days
+
+export function generateInviteToken(): string {
+  return crypto.randomBytes(32).toString('hex')
+}
+
+export async function getInviteExpiryHours(prisma: PrismaClient): Promise<number> {
+  try {
+    const setting = await prisma.systemSettings.findUnique({
+      where: { key: 'invite_link_expiry_hours' },
+      select: { value: true },
+    })
+    const hours = setting?.value ? parseInt(setting.value, 10) : DEFAULT_INVITE_EXPIRY_HOURS
+    return isNaN(hours) || hours < 1 ? DEFAULT_INVITE_EXPIRY_HOURS : hours
+  } catch {
+    return DEFAULT_INVITE_EXPIRY_HOURS
+  }
+}
+
+export async function getInviteExpiryMs(prisma: PrismaClient): Promise<number> {
+  return (await getInviteExpiryHours(prisma)) * 60 * 60 * 1000
+}