feat(workflows): add test-reducer agentic workflow (#626)

Author: Copilot

.github/aw/actions-lock.json

@@ -45,11 +45,6 @@
       "version": "v7.0.1",
       "sha": "043fb46d1a93c77aae656e7c1c64a875d1fc6a0a"
     },
-    "github/gh-aw-actions/setup@v0.72.1": {
-      "repo": "github/gh-aw-actions/setup",
-      "version": "v0.72.1",
-      "sha": "bc56a0cad2f450c562810785ef38649c04db812a"
-    },
     "github/gh-aw/actions/setup@v0.68.1": {
       "repo": "github/gh-aw/actions/setup",
       "version": "v0.68.1",