V13-FE-006: consolidate approved UI and contract hardening

docs/Design/kbx-foundation-v60-status-canonical-contract-hardening/backend/Shared/Operations/Tests/ReconcilePolicyTests.cs

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+using Shared.Operations;
+using Xunit;
+
+namespace Shared.Operations.Tests;
+
+public sealed class ReconcilePolicyTests
+{
+    [Fact]
+    public void Equal_values_are_matched_immediately()
+    {
+        var now = DateTimeOffset.UtcNow;
+        Assert.Equal("matched", ReconcilePolicy.DecideStatus(true, now, now, TimeSpan.FromSeconds(30)));
+    }
+
+    [Fact]
+    public void Mismatch_inside_eventual_consistency_window_is_pending()
+    {
+        var changed = DateTimeOffset.UtcNow;
+        Assert.Equal("pending", ReconcilePolicy.DecideStatus(false, changed, changed.AddSeconds(10), TimeSpan.FromSeconds(30)));
+    }
+
+    [Fact]
+    public void Mismatch_after_grace_period_is_actionable()
+    {
+        var changed = DateTimeOffset.UtcNow;
+        Assert.Equal("mismatch", ReconcilePolicy.DecideStatus(false, changed, changed.AddMinutes(2), TimeSpan.FromSeconds(30)));
+    }
+}

docs/Design/kbx-foundation-v60-status-canonical-contract-hardening/backend/Shared/Operations/Tests/WorkItemActionPolicyTests.cs

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+using Shared.Operations;
+using Xunit;
+
+namespace Shared.Operations.Tests;
+
+public sealed class WorkItemActionPolicyTests
+{
+    [Fact]
+    public void Domain_exception_is_not_manually_resolvable_by_default() =>
+        Assert.False(WorkItemActionPolicy.CanManualResolve("open", false));
+
+    [Fact]
+    public void Explicit_operational_item_can_be_manually_resolved() =>
+        Assert.True(WorkItemActionPolicy.CanManualResolve("claimed", true));
+
+    [Fact]
+    public void Retry_requires_registered_action_key() =>
+        Assert.False(WorkItemActionPolicy.CanRetry("open", null));
+}