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

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

test/skill-e2e-plan-design-finding-floor.test.ts

@@ -0,0 +1,37 @@
+/**
+ * /plan-design-review AskUserQuestion floor regression (gate, paid, real-PTY).
+ *
+ * See test/skill-e2e-plan-eng-finding-floor.test.ts for the contract.
+ */
+
+import { describe, test } from 'bun:test';
+import { runPlanSkillFloorCheck } from './helpers/claude-pty-runner';
+import { FORCING_FLOOR_DESIGN } from './fixtures/forcing-finding-seeds';
+
+const shouldRun = !!process.env.EVALS && process.env.EVALS_TIER === 'gate';
+const describeE2E = shouldRun ? describe : describe.skip;
+
+describeE2E('/plan-design-review AskUserQuestion floor (gate)', () => {
+  test(
+    'seeded forcing finding causes the agent to fire at least one AskUserQuestion',
+    async () => {
+      const obs = await runPlanSkillFloorCheck({
+        skillName: 'plan-design-review',
+        slashCommand: '/plan-design-review',
+        followUpPrompt: FORCING_FLOOR_DESIGN,
+        cwd: process.cwd(),
+        timeoutMs: 600_000,
+        env: { QUESTION_TUNING: 'false', EXPLAIN_LEVEL: 'default' },
+      });
+
+      if (obs.outcome !== 'auq_observed') {
+        throw new Error(
+          `floor test FAILED: outcome=${obs.outcome} elapsed=${obs.elapsedMs}ms\n` +
+            `summary: ${obs.summary}\n` +
+            `--- evidence (last 3KB) ---\n${obs.evidence}`,
+        );
+      }
+    },
+    660_000,
+  );
+});