Gaps fill up, fixes, ui restructuring

src/Policy/StellaOps.Policy.Gateway/Program.cs

@@ -649,6 +649,9 @@ app.MapExceptionApprovalEndpoints();
 // Governance endpoints (Sprint: SPRINT_20251229_021a_FE_policy_governance_controls, Task: GOV-018)
 app.MapGovernanceEndpoints();
 
+// Advisory source impact/conflict endpoints (Sprint: SPRINT_20260219_008, Task: BE8-05)
+app.MapAdvisorySourcePolicyEndpoints();
+
 // Assistant tool lattice endpoints (Sprint: SPRINT_20260113_005_POLICY_assistant_tool_lattice)
 app.MapToolLatticeEndpoints();