Simplify: Single PAP auth processor with hardcoded password

Testing if *radauth + *pap works with hardcoded password "test"
before adding attributes complexity.

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

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

cgrates.json

@@ -81,24 +81,13 @@
 		"*default": ["/usr/share/cgrates/radius/dict/"]
 	},
 	"request_processors": [
-		{
-			"id": "AuthGetPassword",
-			"filters": ["*string:~*vars.*radReqType:*radAuth"],
-			"flags": ["*none", "*attributes", "*continue", "*log"],
-			"request_fields": [
-				{"tag": "Account", "path": "*cgreq.Account", "type": "*variable", "value": "~*req.User-Name"}
-			],
-			"reply_fields": []
-		},
 		{
 			"id": "AuthPAP",
 			"filters": ["*string:~*vars.*radReqType:*radAuth"],
 			"flags": ["*radauth", "*pap", "*log"],
 			"request_fields": [
-				{"tag": "UserPassword", "path": "*vars.UserPassword", "type": "*variable",
-					"value": "~*req.Password"},
-				{"tag": "StrippedPassword", "path": "*cgreq.Password", "type": "*variable",
-					"value": "~*req.User-Password{*strip:*suffix:*nil}"}
+				{"tag": "UserPassword", "path": "*vars.UserPassword", "type": "*constant",
+					"value": "test"}
 			],
 			"reply_fields": [
 				{"tag": "RemoveOnError", "filters": ["*notempty:~*cgrep.Error:"], "type": "*removeall", "path": "*rep"},