Competition/Round architecture: full platform rewrite (Phases 1-9)

Replace Pipeline/Stage system with Competition/Round architecture.
New schema: Competition, Round (7 types), JuryGroup, AssignmentPolicy,
ProjectRoundState, DeliberationSession, ResultLock, SubmissionWindow.
New services: round-engine, round-assignment, deliberation, result-lock,
submission-manager, competition-context, ai-prompt-guard.
Full admin/jury/applicant/mentor UI rewrite. AI prompt hardening with
structured prompts, retry logic, and injection detection. All legacy
pipeline/stage code removed. 4 new migrations + seed aligned.

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

src/server/routers/assignmentIntent.ts

@@ -0,0 +1,82 @@
+import { z } from 'zod'
+import { router, adminProcedure, protectedProcedure } from '../trpc'
+import {
+  createIntent,
+  cancelIntent,
+  getPendingIntentsForRound,
+  getPendingIntentsForMember,
+  getIntentsForRound,
+} from '@/server/services/assignment-intent'
+
+const intentSourceEnum = z.enum(['INVITE', 'ADMIN', 'SYSTEM'])
+
+export const assignmentIntentRouter = router({
+  /**
+   * Create an assignment intent (pre-assignment signal).
+   */
+  create: adminProcedure
+    .input(
+      z.object({
+        juryGroupMemberId: z.string(),
+        roundId: z.string(),
+        projectId: z.string(),
+        source: intentSourceEnum.default('ADMIN'),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      return createIntent({
+        juryGroupMemberId: input.juryGroupMemberId,
+        roundId: input.roundId,
+        projectId: input.projectId,
+        source: input.source,
+        actorId: ctx.user.id,
+      })
+    }),
+
+  /**
+   * List all intents for a round (all statuses).
+   */
+  listForRound: adminProcedure
+    .input(z.object({ roundId: z.string() }))
+    .query(async ({ input }) => {
+      return getIntentsForRound(input.roundId)
+    }),
+
+  /**
+   * List pending intents for a round.
+   */
+  listPendingForRound: adminProcedure
+    .input(z.object({ roundId: z.string() }))
+    .query(async ({ input }) => {
+      return getPendingIntentsForRound(input.roundId)
+    }),
+
+  /**
+   * List pending intents for a specific member in a round.
+   * Protected (not admin-only) so jurors can see their own intents.
+   */
+  listForMember: protectedProcedure
+    .input(
+      z.object({
+        juryGroupMemberId: z.string(),
+        roundId: z.string(),
+      }),
+    )
+    .query(async ({ input }) => {
+      return getPendingIntentsForMember(input.juryGroupMemberId, input.roundId)
+    }),
+
+  /**
+   * Cancel a pending intent.
+   */
+  cancel: adminProcedure
+    .input(
+      z.object({
+        id: z.string(),
+        reason: z.string().min(1),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      return cancelIntent(input.id, input.reason, ctx.user.id)
+    }),
+})