Simplify to PAP authentication only for initial testing

Two-step auth flow:
1. AuthGetPassword: Fetches password from attributes using *dry_run
2. AuthPAP: Performs PAP authentication with *radauth + *pap

Will add CHAP and MS-CHAPv1 after PAP is confirmed working.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cgrates.json

@@ -82,9 +82,9 @@
 	},
 	"request_processors": [
 		{
-			"id": "PPPoEAuth",
+			"id": "AuthGetPassword",
 			"filters": ["*string:~*vars.*radReqType:*radAuth"],
-			"flags": ["*event", "*attributes", "*log"],
+			"flags": ["*dry_run", "*attributes", "*continue", "*log"],
 			"request_fields": [
 				{"tag": "Account", "path": "*cgreq.Account", "type": "*composed", "value": "~*req.User-Name", "mandatory": true}
 			],
@@ -92,6 +92,18 @@
 				{"tag": "SessionTimeout", "path": "*rep.Session-Timeout", "type": "*constant", "value": "3600"},
 				{"tag": "AcctInterimInterval", "path": "*rep.Acct-Interim-Interval", "type": "*constant", "value": "60"}
 			]
+		},
+		{
+			"id": "AuthPAP",
+			"filters": ["*string:~*vars.*radReqType:*radAuth"],
+			"flags": ["*radauth", "*pap", "*log"],
+			"request_fields": [
+				{"tag": "UserPassword", "path": "*vars.UserPassword", "type": "*variable", "value": "~*cgrep.Attributes.Password"}
+			],
+			"reply_fields": [
+				{"tag": "ReplyOnError", "filters": ["*notempty:~*cgrep.Error:"], "path": "*rep.*radReplyCode", "type": "*constant", "value": "AccessReject"},
+				{"tag": "ReplyMessage", "filters": ["*notempty:~*cgrep.Error:"], "path": "*rep.Reply-Message", "type": "*variable", "value": "~*cgrep.Error"}
+			]
 		}
 	]
 },