feat(partitioning): support fat32 and add validation for system partition name

iridium_installer/backend/disk.py

@@ -100,10 +100,11 @@ def mount_partitions(partition_info, mount_root="/mnt"):
     
     logger.info(f"Partitions mounted at {mount_root}")
 
-def create_partition(disk_device, size_mb, type_code="8300", name="Linux filesystem"):
+def create_partition(disk_device, size_mb, type_code="8300", name="Linux filesystem", fstype=None):
     """
-    Creates a new partition on the disk.
+    Creates a new partition on the disk and formats it.
     type_code: ef00 (EFI), 8200 (Swap), 8300 (Linux)
+    fstype: ext4, fat32, swap
     """
     # Find next available partition number
     res = run_command(["sgdisk", "-p", disk_device])
@@ -126,6 +127,20 @@ def create_partition(disk_device, size_mb, type_code="8300", name="Linux filesys
         disk_device
     ])
     run_command(["partprobe", disk_device])
+    
+    # Wait for partition node
+    import time
+    time.sleep(1)
+    
+    part_dev = get_partition_device(disk_device, next_num)
+    
+    if fstype == "fat32":
+        run_command(["mkfs.vfat", "-F32", part_dev])
+    elif fstype == "ext4":
+        run_command(["mkfs.ext4", "-F", part_dev])
+    elif fstype == "swap":
+        run_command(["mkswap", part_dev])
+        
     return next_num
 
 def delete_partition(disk_device, part_num):