Oracle DR: Add naming convention to RMAN backups for smart restore selection

- Add FORMAT to rman_backup.txt: L0_*, ARC_*, SPFILE_*, CF_*
- Add FORMAT to rman_backup_incremental.txt: L1_*, ARC_*, SPFILE_*, CF_*
- Update rman_restore_from_zero.ps1 TestMode to select files by naming convention
- Select only latest L0 backup set + all L1 incrementals/archives (faster DR tests)
- Backward compatible with old autobackup naming (fallback to copy all)
- Fixes missing datafiles issue (previously only copied 8 files, now copies full backup set)

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

oracle/standby-server-scripts/rman_backup.txt

@@ -4,15 +4,25 @@ RUN {
     CONFIGURE COMPRESSION ALGORITHM 'BASIC';
 
     # Full backup COMPRESSED + Archive logs (șterge logs după backup)
+    # FORMAT: L0_<dbname>_<YYYYMMDD>_<set#>_<piece#>
     BACKUP AS COMPRESSED BACKUPSET
         INCREMENTAL LEVEL 0
         TAG 'DAILY_FULL_COMPRESSED'
+        FORMAT 'L0_%d_%T_%s_%p.BKP'
         DATABASE
-        PLUS ARCHIVELOG DELETE INPUT;
+        PLUS ARCHIVELOG DELETE INPUT
+        FORMAT 'ARC_%d_%T_%s_%p.BKP';
 
     # Backup SPFILE și Control File
-    BACKUP AS COMPRESSED BACKUPSET SPFILE;
-    BACKUP CURRENT CONTROLFILE;
+    BACKUP AS COMPRESSED BACKUPSET
+        TAG 'SPFILE_BACKUP'
+        FORMAT 'SPFILE_%d_%T_%s_%p.BKP'
+        SPFILE;
+    
+    BACKUP
+        TAG 'CONTROLFILE_BACKUP'
+        FORMAT 'CF_%d_%T_%s_%p.BKP'
+        CURRENT CONTROLFILE;
 
     # Cleanup old backups (păstrează ultimele 2 - REDUNDANCY 2)
     DELETE NOPROMPT OBSOLETE;