Switch to systemd-boot, full log sending, and offline install fix

iridium_installer/backend/os_install.py

@@ -120,17 +120,17 @@ def install_minimal_os(mount_root, releasever="43"):
 
     # Offline installation logic
     iso_repo = "/run/install/repo"
-    dnf_offline_args = []
+    dnf_args = []
     
     if os.path.exists(iso_repo):
-        logger.info(f"Found ISO repository at {iso_repo}. Using offline mode.")
-        dnf_offline_args = [
+        logger.info(f"Found ISO repository at {iso_repo}. Using strictly offline mode.")
+        dnf_args = [
             "--disablerepo=*",
             f"--repofrompath=iridium-iso,{iso_repo}",
             "--enablerepo=iridium-iso"
         ]
     else:
-        logger.warning(f"ISO repository not found at {iso_repo}. Falling back to host configuration.")
+        logger.warning(f"ISO repository not found at {iso_repo}. Trying to use host config (may require network).")
 
     cmd = [
         "dnf",
@@ -141,7 +141,7 @@ def install_minimal_os(mount_root, releasever="43"):
         "--use-host-config",
         "--setopt=install_weak_deps=False",
         "--nodocs",
-    ] + dnf_offline_args + packages
+    ] + dnf_args + packages
 
     with mount_pseudo_fs(mount_root):
         run_command(cmd)