Fix test assertion mismatches across Gateway, CLI, JobEngine, AdvisoryAI

- Gateway: align route mapping test with jobengine hostname rename
- CLI: update module registry count (10→28), migration consolidation (36→37),
  fix System.CommandLine option ordering, add SearchUnifiedAsync mock setup,
  strip FluentAssertions license warning from golden output, fix repo root detection
- JobEngine: update service actor subject, tolerate approval expiry in seed data
- AdvisoryAI: update route boost assertions for 0.85 multiplier

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Cli/__Tests/StellaOps.Cli.Tests/Commands/MigrationCommandHandlersTests.cs

@@ -9,6 +9,6 @@ public class MigrationCommandHandlersTests
     [Fact]
     public void Registry_Has_All_Modules()
     {
-        Assert.Equal(10, MigrationModuleRegistry.Modules.Count);
+        Assert.Equal(28, MigrationModuleRegistry.Modules.Count);
     }
 }