feat: enhance agent settlement features and improve data access controls

- Added new section in AGENTS.md detailing learned workspace facts for better understanding of settlement processes.
- Updated AgentNodeDestroyController to remove unnecessary checks for admin users.
- Enhanced AgentSettlement controllers to assert permissions for finance adjustments and bill operations.
- Improved query scopes in AgentSettlement services to ensure proper data access based on admin roles.
- Refactored methods in SettlementPartyEnrichment for better bill row enrichment and data handling.
- Introduced new methods in AdminAgentSettlementScope for managing agent node visibility and finance adjustments.

app/Models/AdminUser.php

@@ -409,7 +409,11 @@ final class AdminUser extends Authenticatable
 
         $codes = array_keys($merged);
 
-        return AgentProfileCapabilityFilter::applyToMenuActionCodes($codes, $this->primaryAgentProfile());
+        return AgentProfileCapabilityFilter::applyToMenuActionCodes(
+            $codes,
+            $this->primaryAgentProfile(),
+            $this->primaryAgentNode(),
+        );
     }
 
     private function primaryAgentProfile(): ?AgentProfile