chore: remove kbx-foundation-v36 reference (superseded by v4 implementation)

Removed entire kbx-foundation-v36 directory as it's been replaced by
the new KBX Foundation v4 patterns implemented in this session:
- Registry-driven screen definitions
- Density-aware UI adapter components
- Feature module templates (ShadowRun, Models)

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

docs/Design/kbx-foundation-v52-fe-operational-navigation-screen-anatomy/backend/tests/Providers/KisProviderPolicyTests.cs

@@ -0,0 +1,16 @@
+using Xunit;
+namespace Kbx.Tests.Providers;
+public sealed class KisProviderPolicyTests
+{
+    [Fact] public void Market_data_reference_is_get_only()
+    {
+        Assert.Equal("GET", HttpMethod.Get.Method);
+        Assert.Equal("FHKST01010100", "FHKST01010100");
+    }
+    [Fact] public void Conservative_prod_spacing_stays_below_official_max()
+    {
+        const int spacingMs = 100;
+        var kbxRequestsPerSecond = 1000 / spacingMs;
+        Assert.True(kbxRequestsPerSecond <= 18);
+    }
+}

docs/Design/kbx-foundation-v52-fe-operational-navigation-screen-anatomy/backend/tests/Providers/KrxProviderPolicyTests.cs

@@ -0,0 +1,11 @@
+using Xunit;
+namespace Kbx.Tests.Providers;
+public sealed class KrxProviderPolicyTests
+{
+    [Fact] public void Approved_service_must_stay_inside_krx_https_domain()
+    {
+        var ok = new Uri("https://sample.krx.co.kr/service");
+        Assert.Equal(Uri.UriSchemeHttps, ok.Scheme);
+        Assert.EndsWith(".krx.co.kr", ok.Host, StringComparison.OrdinalIgnoreCase);
+    }
+}

docs/Design/kbx-foundation-v52-fe-operational-navigation-screen-anatomy/backend/tests/Providers/OpenDartProviderPolicyTests.cs

@@ -0,0 +1,15 @@
+using Xunit;
+namespace Kbx.Tests.Providers;
+public sealed class OpenDartProviderPolicyTests
+{
+    [Theory]
+    [InlineData("013", "NoData")]
+    [InlineData("020", "Transient")]
+    [InlineData("800", "Transient")]
+    [InlineData("010", "Permanent")]
+    public void Official_status_codes_have_explicit_policy(string status, string expected)
+    {
+        var actual = status switch { "013" => "NoData", "020" or "800" or "900" => "Transient", _ => "Permanent" };
+        Assert.Equal(expected, actual);
+    }
+}