Add Feature Service DI registrations + re-enable SecurityMaster endpoints

DI Registrations added:
- IMarketDataIngestionService (VS-03)
- IPortfolioRebalanceService (VS-04)
- IRiskMetricsService (VS-05)
- IStressTestService (VS-06)
- IAlertService (VS-07)
- IDashboardService (VS-08)

Note: SecurityMaster endpoints re-enabled but commented in DI pending
ISecurityMasterRulesStore implementation.

Tests: 6/6 Architecture PASS
Build: Clean (0 errors, 0 warnings)

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

publish/web.config

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <location path="." inheritInChildApplications="false">
+    <system.webServer>
+      <handlers>
+        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
+      </handlers>
+      <aspNetCore processPath="dotnet" arguments=".\KArtSell.Host.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" hostingModel="inprocess" />
+    </system.webServer>
+  </location>
+</configuration>
+<!--ProjectGuid: 7F4AD582-8828-5F37-A4F3-E0F8ED300BFF-->