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/app/(admin)/admin/messages/page.tsx

@@ -64,12 +64,12 @@ import {
 import { toast } from 'sonner'
 import { formatDate } from '@/lib/utils'
 
-type RecipientType = 'ALL' | 'ROLE' | 'STAGE_JURY' | 'PROGRAM_TEAM' | 'USER'
+type RecipientType = 'ALL' | 'ROLE' | 'ROUND_JURY' | 'PROGRAM_TEAM' | 'USER'
 
 const RECIPIENT_TYPE_OPTIONS: { value: RecipientType; label: string }[] = [
   { value: 'ALL', label: 'All Users' },
   { value: 'ROLE', label: 'By Role' },
-  { value: 'STAGE_JURY', label: 'Stage Jury' },
+  { value: 'ROUND_JURY', label: 'Round Jury' },
   { value: 'PROGRAM_TEAM', label: 'Program Team' },
   { value: 'USER', label: 'Specific User' },
 ]
@@ -79,7 +79,7 @@ const ROLES = ['JURY_MEMBER', 'MENTOR', 'OBSERVER', 'APPLICANT', 'PROGRAM_ADMIN'
 export default function MessagesPage() {
   const [recipientType, setRecipientType] = useState<RecipientType>('ALL')
   const [selectedRole, setSelectedRole] = useState('')
-  const [stageId, setStageId] = useState('')
+  const [roundId, setStageId] = useState('')
   const [selectedProgramId, setSelectedProgramId] = useState('')
   const [selectedUserId, setSelectedUserId] = useState('')
   const [subject, setSubject] = useState('')
@@ -173,10 +173,10 @@ export default function MessagesPage() {
         const roleLabel = selectedRole ? selectedRole.replace(/_/g, ' ') : ''
         return roleLabel ? `All ${roleLabel}s` : 'By Role (none selected)'
       }
-      case 'STAGE_JURY': {
-        if (!stageId) return 'Stage Jury (none selected)'
+      case 'ROUND_JURY': {
+        if (!roundId) return 'Stage Jury (none selected)'
         const stage = rounds?.find(
-          (r) => r.id === stageId
+          (r) => r.id === roundId
         )
         return stage
           ? `Jury of ${stage.program ? `${stage.program.name} - ` : ''}${stage.name}`
@@ -217,7 +217,7 @@ export default function MessagesPage() {
       toast.error('Please select a role')
       return
     }
-    if (recipientType === 'STAGE_JURY' && !stageId) {
+    if (recipientType === 'ROUND_JURY' && !roundId) {
       toast.error('Please select a stage')
       return
     }
@@ -237,7 +237,7 @@ export default function MessagesPage() {
     sendMutation.mutate({
       recipientType,
       recipientFilter: buildRecipientFilter(),
-      stageId: stageId || undefined,
+      roundId: roundId || undefined,
       subject: subject.trim(),
       body: body.trim(),
       deliveryChannels,
@@ -332,10 +332,10 @@ export default function MessagesPage() {
                 </div>
               )}
 
-              {recipientType === 'STAGE_JURY' && (
+              {recipientType === 'ROUND_JURY' && (
                 <div className="space-y-2">
                   <Label>Select Stage</Label>
-                  <Select value={stageId} onValueChange={setStageId}>
+                  <Select value={roundId} onValueChange={setStageId}>
                     <SelectTrigger>
                       <SelectValue placeholder="Choose a stage..." />
                     </SelectTrigger>