fix(licensing): use importlib loader in src/License_Authority.py proxy to prevent circular imports

src/License_Authority.py

@@ -7,27 +7,22 @@ Repo: https://gitea.eibl.tech/me0nline/LOGAR-LICENSING.git
 
 import os
 import sys
+import importlib.util
 
-# Prefer the submodule implementation
 ROOT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
-SUBMODULE_DIR = os.path.join(ROOT_DIR, "LOGAR-LICENSING")
-if SUBMODULE_DIR not in sys.path:
-    sys.path.insert(0, SUBMODULE_DIR)
+SUBMODULE_FILE = os.path.join(ROOT_DIR, "LOGAR-LICENSING", "License_Authority.py")
 
-from License_Authority import (
-    init_authority_db,
-    extract_license_info_from_cert,
-    generate_master_root_ca,
-    sign_ca_csr_with_seats,
-    issue_license_from_csr,
-    renew_license_cert,
-    revoke_license,
-    list_licenses,
-    main,
-    OID_LOGAR_SEATS,
-    OID_LOGAR_LICENSE_ID,
-    OID_LOGAR_ISSUER_URL
-)
+if not os.path.exists(SUBMODULE_FILE):
+    raise ImportError(f"LOGAR-LICENSING submodule not found at {SUBMODULE_FILE}. Run 'git submodule update --init --recursive'.")
+
+spec = importlib.util.spec_from_file_location("_submodule_authority", SUBMODULE_FILE)
+_sub = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(_sub)
+
+# Export public symbols from submodule into this module's namespace
+for attr in dir(_sub):
+    if not attr.startswith("__"):
+        globals()[attr] = getattr(_sub, attr)
 
 if __name__ == "__main__":
-    main()
+    _sub.main()