feat: show quest badge evidence hints

static/app.js

@@ -669,7 +669,12 @@ function renderAtlasDetail(point) {
   const quests = (point.quest_matches || [])
     .map((match) => {
       const confidence = (Number(match.confidence) * 100).toFixed(0);
-      return `<span>${escapeHtml(atlasQuestLabel(match.quest))} ${confidence}%</span>`;
+      const label = atlasQuestLabel(match.quest);
+      const hint = questBadgeHint(match, label, confidence);
+      return (
+        `<span title="${escapeAttribute(hint)}" aria-label="${escapeAttribute(hint)}">` +
+        `${escapeHtml(label)} ${confidence}%</span>`
+      );
     })
     .join("");
   const tags = [...(point.models || []).slice(0, 3), ...visibleProjectTags(point.tags || []).slice(0, 3)]
@@ -685,6 +690,21 @@ function renderAtlasDetail(point) {
   `;
 }
 
+function questBadgeHint(match, label, confidence) {
+  const evidence = String(match?.evidence || "").trim();
+  const source = questEvidenceSourceLabel(match?.source);
+  const parts = [`${label} ${confidence}% confidence`];
+  if (evidence) parts.push(`${source}: ${evidence}`);
+  return parts.join(". ");
+}
+
+function questEvidenceSourceLabel(source) {
+  const normalized = String(source || "").trim().toLowerCase();
+  if (normalized === "readme") return "README evidence";
+  if (normalized === "app_file") return "App file evidence";
+  return "Evidence";
+}
+
 function visibleProjectTags(tags) {
   return (tags || []).filter((tag) => !String(tag || "").toLowerCase().startsWith("region:"));
 }

tests/test_frontend_copy.py

@@ -29,6 +29,10 @@ def test_main_interface_copy_is_builder_facing() -> None:
     assert "stopVoiceRecording" in app_js
     assert 'recording: "Stop"' in app_js
     assert 'stopping: "Stopping..."' in app_js
+    assert "questBadgeHint" in app_js
+    assert 'title="${escapeAttribute(hint)}"' in app_js
+    assert "README evidence" in app_js
+    assert "App file evidence" in app_js
     assert "readNdjson" in app_js
     assert "@gradio/client" not in app_js
     assert "renderArtifactCanvas" not in app_js