Consolidated round management, AI filtering enhancements, MinIO storage restructure

- Fix STAGE_ACTIVE bug in assignment router (now ROUND_ACTIVE)
- Add evaluation form CRUD (getForm + upsertForm endpoints)
- Add advanceProjects mutation for manual project advancement
- Rewrite round detail page: 7-tab consolidated interface
- Add filtering rules UI with full CRUD (field-based, document check, AI screening)
- Add pageCount field to ProjectFile for document page limit filtering
- Enhance AI filtering: per-file page limits, category/region-aware guidelines
- Restructure MinIO paths: {ProjectName}/{RoundName}/{timestamp}-{file}
- Update dashboard and pool page links from /admin/competitions to /admin/rounds

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

prisma/schema.prisma

@@ -683,10 +683,11 @@ model ProjectFile {
   requirementId String? // FK to FileRequirement (if uploaded against a requirement)
 
   // File info
-  fileType FileType
-  fileName String
-  mimeType String
-  size     Int // bytes
+  fileType  FileType
+  fileName  String
+  mimeType  String
+  size      Int // bytes
+  pageCount Int? // Number of pages (PDFs, presentations, etc.)
 
   // MinIO location
   bucket    String