Initial import from garrytan/gstack@026751e (main snapshot via local relay)

Source: https://github.com/garrytan/gstack/commit/026751e

test/fixtures/qa-eval-spa-ground-truth.json

@@ -0,0 +1,43 @@
+{
+  "fixture": "qa-eval-spa.html",
+  "bugs": [
+    {
+      "id": "broken-route",
+      "category": "functional",
+      "severity": "high",
+      "description": "Products nav link points to #/prodcts (typo) instead of #/products — shows 'Page not found'",
+      "detection_hint": "route|prodcts|typo|products|not found|broken link|navigation"
+    },
+    {
+      "id": "stale-cart-state",
+      "category": "functional",
+      "severity": "medium",
+      "description": "Cart count persists across route changes — never resets when navigating away from products",
+      "detection_hint": "cart|count|state|persist|reset|stale|navigation"
+    },
+    {
+      "id": "async-fetch-error",
+      "category": "functional",
+      "severity": "high",
+      "description": "Product list briefly loads then shows 'Error: Failed to fetch products from API' after 1 second",
+      "detection_hint": "error|fetch|products|API|loading|failed|async"
+    },
+    {
+      "id": "missing-aria-current",
+      "category": "accessibility",
+      "severity": "medium",
+      "description": "Navigation links have no aria-current attribute to indicate the active route",
+      "detection_hint": "aria|current|active|navigation|accessibility|a11y"
+    },
+    {
+      "id": "console-warn-leak",
+      "category": "console",
+      "severity": "medium",
+      "description": "console.warn fires on every route change: 'Possible memory leak detected: 11 event listeners'",
+      "detection_hint": "console|warn|memory leak|listener|event|warning"
+    }
+  ],
+  "total_bugs": 5,
+  "minimum_detection": 2,
+  "max_false_positives": 5
+}