add change info

Author: joheredi

.chronus/changes/scenario-tiers-2025-11-19-13-57-26.md

@@ -0,0 +1,13 @@
+---
+changeKind: feature
+packages:
+  - "@typespec/http-specs"
+  - "@typespec/spec-coverage-sdk"
+  - "@typespec/spector"
+---
+
+Add scenario tier support to categorize scenarios as "core" or "extended"
+
+- Add `@scenarioTier` decorator to TypeSpec HTTP specs for better test organization
+- Update spec dashboard to support tier-based filtering of scenarios
+- Enable teams to focus on core functionality testing before extended features