Comprehensive admin UI stats audit: fix 16 display bugs

HIGH fixes:
- H1: Competition detail project count no longer double-counts across rounds
- H2: Rounds page header stats use unfiltered round set
- H3: Rounds page "eval" label corrected to "asgn" (assignment count)
- H4: Observer reports project count uses distinct analytics count
- H5: Awards eligibility count filters to only eligible=true (backend)
- H6: Round detail projectCount derived from projectStates for consistency
- H7: Deliberation hasVoted derived from votes array (was always undefined)

MEDIUM fixes:
- M1: Reports page round status badges use correct ROUND_ACTIVE/ROUND_CLOSED enums
- M2: Observer reports badges use ROUND_ prefix instead of stale STAGE_ prefix
- M3: Deliberation list status badges use correct VOTING/TALLYING/RUNOFF enums
- M4: Competition list/detail round count excludes special-award rounds (backend)
- M5: Messages page shows actual recipient count instead of hardcoded "1 user"

LOW fixes:
- L2: Observer analytics jurorCount scoped to round when roundId provided
- L3: Analytics round-scoped project count uses ProjectRoundState not assignments
- L4: JuryGroup delete audit log reports member count (not assignment count)
- L5: Project rankings include unevaluated projects at bottom instead of hiding

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

src/server/routers/competition.ts

@@ -146,7 +146,11 @@ export const competitionRouter = router({
         orderBy: { createdAt: 'desc' },
         include: {
           _count: {
-            select: { rounds: true, juryGroups: true, submissionWindows: true },
+            select: {
+              rounds: { where: { specialAwardId: null } },
+              juryGroups: true,
+              submissionWindows: true,
+            },
           },
         },
       })
@@ -256,7 +260,7 @@ export const competitionRouter = router({
           orderBy: { sortOrder: 'asc' },
           select: { id: true, name: true, roundType: true, status: true },
         },
-        _count: { select: { rounds: true, juryGroups: true } },
+        _count: { select: { rounds: { where: { specialAwardId: null } }, juryGroups: true } },
       },
       orderBy: { createdAt: 'desc' },
     })