Open WebCRT New Session setup for LLDP placeholders.

Claim the existing placeholder in place and promote source to webcrt instead of prompting for password-only auth.

Co-authored-by: Cursor <cursoragent@cursor.com>

netx_api/cli_schemas.py

@@ -119,8 +119,11 @@ class CliTargetOut(BaseModel):
     vendor: str = ""
     device_type: str = ""
     protocol: str = ""
+    port: int = 0
     username: str = ""
     has_password: bool = False
     hop_enabled: bool = False
     connect_status: str = "unknown"
     cli_profile_ready: bool = False
+    # ManagedNE.source provenance (lldp / webcrt / ume_sync / …). Empty for UME list rows.
+    ne_source: str = ""