feat: QA skill never refuses browser testing

Add anti-refusal guardrails to /qa and /qa-only skills. When the user
invokes /qa, the skill must always use the browser — even if the diff
shows only backend/config changes with no obvious UI surface. Falls
back to Quick mode (homepage + top 5 nav targets) when no specific
pages are identified from the diff.

Adds LLM-as-judge eval to verify the anti-refusal behavior.

qa-only/SKILL.md

@@ -234,6 +234,8 @@ This is the **primary mode** for developers verifying their work. When the user
    - API endpoints → test them directly with `$B js "await fetch('/api/...')"`
    - Static pages (markdown, HTML) → navigate to them directly
 
+   **If no obvious pages/routes are identified from the diff:** Do not skip browser testing. The user invoked /qa because they want browser-based verification. Fall back to Quick mode — navigate to the homepage, follow the top 5 navigation targets, check console for errors, and test any interactive elements found. Backend, config, and infrastructure changes affect app behavior — always verify the app still works.
+
 3. **Detect the running app** — check common local dev ports:
    ```bash
    $B goto http://localhost:3000 2>/dev/null && echo "Found app on :3000" || \
@@ -488,6 +490,7 @@ Minimum 0 per category.
 9. **Never delete output files.** Screenshots and reports accumulate — that's intentional.
 10. **Use `snapshot -C` for tricky UIs.** Finds clickable divs that the accessibility tree misses.
 11. **Show screenshots to the user.** After every `$B screenshot`, `$B snapshot -a -o`, or `$B responsive` command, use the Read tool on the output file(s) so the user can see them inline. For `responsive` (3 files), Read all three. This is critical — without it, screenshots are invisible to the user.
+12. **Never refuse to use the browser.** When the user invokes /qa or /qa-only, they are requesting browser-based testing. Never suggest evals, unit tests, or other alternatives as a substitute. Even if the diff appears to have no UI changes, backend changes affect app behavior — always open the browser and test.
 
 ---
 

qa/SKILL.md

@@ -430,6 +430,8 @@ This is the **primary mode** for developers verifying their work. When the user
    - API endpoints → test them directly with `$B js "await fetch('/api/...')"`
    - Static pages (markdown, HTML) → navigate to them directly
 
+   **If no obvious pages/routes are identified from the diff:** Do not skip browser testing. The user invoked /qa because they want browser-based verification. Fall back to Quick mode — navigate to the homepage, follow the top 5 navigation targets, check console for errors, and test any interactive elements found. Backend, config, and infrastructure changes affect app behavior — always verify the app still works.
+
 3. **Detect the running app** — check common local dev ports:
    ```bash
    $B goto http://localhost:3000 2>/dev/null && echo "Found app on :3000" || \
@@ -684,6 +686,7 @@ Minimum 0 per category.
 9. **Never delete output files.** Screenshots and reports accumulate — that's intentional.
 10. **Use `snapshot -C` for tricky UIs.** Finds clickable divs that the accessibility tree misses.
 11. **Show screenshots to the user.** After every `$B screenshot`, `$B snapshot -a -o`, or `$B responsive` command, use the Read tool on the output file(s) so the user can see them inline. For `responsive` (3 files), Read all three. This is critical — without it, screenshots are invisible to the user.
+12. **Never refuse to use the browser.** When the user invokes /qa or /qa-only, they are requesting browser-based testing. Never suggest evals, unit tests, or other alternatives as a substitute. Even if the diff appears to have no UI changes, backend changes affect app behavior — always open the browser and test.
 
 Record baseline health score at end of Phase 6.
 

scripts/gen-skill-docs.ts

@@ -302,6 +302,8 @@ This is the **primary mode** for developers verifying their work. When the user
    - API endpoints → test them directly with \`$B js "await fetch('/api/...')"\`
    - Static pages (markdown, HTML) → navigate to them directly
 
+   **If no obvious pages/routes are identified from the diff:** Do not skip browser testing. The user invoked /qa because they want browser-based verification. Fall back to Quick mode — navigate to the homepage, follow the top 5 navigation targets, check console for errors, and test any interactive elements found. Backend, config, and infrastructure changes affect app behavior — always verify the app still works.
+
 3. **Detect the running app** — check common local dev ports:
    \`\`\`bash
    $B goto http://localhost:3000 2>/dev/null && echo "Found app on :3000" || \\
@@ -555,7 +557,8 @@ Minimum 0 per category.
 8. **Depth over breadth.** 5-10 well-documented issues with evidence > 20 vague descriptions.
 9. **Never delete output files.** Screenshots and reports accumulate — that's intentional.
 10. **Use \`snapshot -C\` for tricky UIs.** Finds clickable divs that the accessibility tree misses.
-11. **Show screenshots to the user.** After every \`$B screenshot\`, \`$B snapshot -a -o\`, or \`$B responsive\` command, use the Read tool on the output file(s) so the user can see them inline. For \`responsive\` (3 files), Read all three. This is critical — without it, screenshots are invisible to the user.`;
+11. **Show screenshots to the user.** After every \`$B screenshot\`, \`$B snapshot -a -o\`, or \`$B responsive\` command, use the Read tool on the output file(s) so the user can see them inline. For \`responsive\` (3 files), Read all three. This is critical — without it, screenshots are invisible to the user.
+12. **Never refuse to use the browser.** When the user invokes /qa or /qa-only, they are requesting browser-based testing. Never suggest evals, unit tests, or other alternatives as a substitute. Even if the diff appears to have no UI changes, backend changes affect app behavior — always open the browser and test.`;
 }
 
 function generateDesignReviewLite(_ctx: TemplateContext): string {

test/helpers/touchfiles.ts

@@ -116,6 +116,7 @@ export const LLM_JUDGE_TOUCHFILES: Record<string, string[]> = {
   'regression vs baseline':           ['SKILL.md', 'SKILL.md.tmpl', 'browse/src/commands.ts', 'test/fixtures/eval-baselines.json'],
   'qa/SKILL.md workflow':             ['qa/SKILL.md', 'qa/SKILL.md.tmpl'],
   'qa/SKILL.md health rubric':        ['qa/SKILL.md', 'qa/SKILL.md.tmpl'],
+  'qa/SKILL.md anti-refusal':         ['qa/SKILL.md', 'qa/SKILL.md.tmpl', 'qa-only/SKILL.md', 'qa-only/SKILL.md.tmpl'],
   'cross-skill greptile consistency': ['review/SKILL.md', 'review/SKILL.md.tmpl', 'ship/SKILL.md', 'ship/SKILL.md.tmpl', 'review/greptile-triage.md', 'retro/SKILL.md', 'retro/SKILL.md.tmpl'],
   'baseline score pinning':           ['SKILL.md', 'SKILL.md.tmpl', 'test/fixtures/eval-baselines.json'],
 

test/skill-llm-eval.test.ts

@@ -256,7 +256,7 @@ Scores are 1-5 overall quality.`,
 
 // --- Part 7: QA skill quality evals (C6) ---
 
-describeIfSelected('QA skill quality evals', ['qa/SKILL.md workflow', 'qa/SKILL.md health rubric'], () => {
+describeIfSelected('QA skill quality evals', ['qa/SKILL.md workflow', 'qa/SKILL.md health rubric', 'qa/SKILL.md anti-refusal'], () => {
   const qaContent = fs.readFileSync(path.join(ROOT, 'qa', 'SKILL.md'), 'utf-8');
 
   testIfSelected('qa/SKILL.md workflow', async () => {
@@ -342,6 +342,59 @@ ${section}`);
     expect(scores.completeness).toBeGreaterThanOrEqual(3);
     expect(scores.actionability).toBeGreaterThanOrEqual(4);
   }, 30_000);
+
+  testIfSelected('qa/SKILL.md anti-refusal', async () => {
+    const t0 = Date.now();
+    // Extract both the diff-aware mode section and Important Rules section
+    const diffAwareStart = qaContent.indexOf('### Diff-aware');
+    const diffAwareEnd = qaContent.indexOf('### Full');
+    const rulesStart = qaContent.indexOf('## Important Rules');
+    const rulesEnd = qaContent.indexOf('## Framework-Specific');
+    const diffAwareSection = qaContent.slice(diffAwareStart, diffAwareEnd);
+    const rulesSection = qaContent.slice(rulesStart, rulesEnd);
+
+    const result = await callJudge<{ would_browse: boolean; fallback_behavior: string; confidence: number; reasoning: string }>(`You are evaluating whether a QA testing skill document would cause an AI agent to USE THE BROWSER or REFUSE to use the browser in a specific scenario.
+
+SCENARIO:
+A user runs /qa (a browser-based QA testing skill). The branch diff shows ONLY prompt template files and config file changes — no routes, views, controllers, components, or CSS were changed. The changes are "purely backend" with no obvious UI surface.
+
+QUESTION: Based on the document excerpts below, would the agent open the browser and test the application, or would it decline/refuse to browse and suggest running evals or unit tests instead?
+
+DOCUMENT EXCERPT 1 (Diff-aware mode instructions):
+${diffAwareSection}
+
+DOCUMENT EXCERPT 2 (Important Rules):
+${rulesSection}
+
+Respond with ONLY valid JSON:
+{
+  "would_browse": true or false,
+  "fallback_behavior": "description of what the agent would do when no UI pages are identified from the diff",
+  "confidence": N (1-5, how confident you are in your answer),
+  "reasoning": "brief explanation"
+}
+
+Rules:
+- would_browse should be true if the document instructs the agent to always use the browser regardless of diff content
+- would_browse should be false if the document allows the agent to skip browser testing for non-UI changes
+- confidence: 5 = document is unambiguous, 1 = document is unclear or contradictory`);
+
+    console.log('QA anti-refusal result:', JSON.stringify(result, null, 2));
+
+    evalCollector?.addTest({
+      name: 'qa/SKILL.md anti-refusal',
+      suite: 'QA skill quality evals',
+      tier: 'llm-judge',
+      passed: result.would_browse === true && result.confidence >= 4,
+      duration_ms: Date.now() - t0,
+      cost_usd: 0.02,
+      judge_scores: { would_browse: result.would_browse ? 1 : 0, confidence: result.confidence },
+      judge_reasoning: result.reasoning,
+    });
+
+    expect(result.would_browse).toBe(true);
+    expect(result.confidence).toBeGreaterThanOrEqual(4);
+  }, 30_000);
 });
 
 // --- Part 7: Cross-skill consistency judge (C7) ---

test/touchfiles.test.ts

@@ -123,7 +123,8 @@ describe('selectTests', () => {
     const result = selectTests(['qa/SKILL.md'], LLM_JUDGE_TOUCHFILES);
     expect(result.selected).toContain('qa/SKILL.md workflow');
     expect(result.selected).toContain('qa/SKILL.md health rubric');
-    expect(result.selected.length).toBe(2);
+    expect(result.selected).toContain('qa/SKILL.md anti-refusal');
+    expect(result.selected.length).toBe(3);
   });
 
   test('SKILL.md.tmpl root template selects root-dependent tests and routing tests', () => {