Merge all changes

src/Policy/__Tests/StellaOps.Policy.Tests/Gates/BudgetLedgerTests.cs

@@ -32,7 +32,7 @@ public sealed class BudgetLedgerTests
     public async Task GetBudget_ReturnsExistingBudget()
     {
         var existing = CreateBudget("existing-service", consumed: 50);
-        await _store.CreateAsync(existing, CancellationToken.None);
+        await _store.CreateAsync(existing, TestContext.Current.CancellationToken);
 
         var budget = await _ledger.GetBudgetAsync("existing-service", _currentWindow);
 
@@ -43,7 +43,7 @@ public sealed class BudgetLedgerTests
     public async Task Consume_DeductsBudget()
     {
         var initial = CreateBudget("test-service", consumed: 50);
-        await _store.CreateAsync(initial, CancellationToken.None);
+        await _store.CreateAsync(initial, TestContext.Current.CancellationToken);
 
         var result = await _ledger.ConsumeAsync("test-service", 20, "release-1");
 
@@ -58,7 +58,7 @@ public sealed class BudgetLedgerTests
     public async Task Consume_FailsWhenInsufficientBudget()
     {
         var initial = CreateBudget("test-service", consumed: 190);
-        await _store.CreateAsync(initial, CancellationToken.None);
+        await _store.CreateAsync(initial, TestContext.Current.CancellationToken);
 
         var result = await _ledger.ConsumeAsync("test-service", 20, "release-1");