fix: add server-side retry logic for intermittent LLM JSON parse failures

server.mjs

@@ -367,33 +367,44 @@ async function handleGenerate(req, res) {
 
   const signal = combinedSignal(req);
 
-  try {
-    const content = await callProvider(
-      [
-        { role: 'system', content: buildSystemPrompt(body) },
-        { role: 'user', content: buildUserMessage(body) },
-      ],
-      { max_tokens: 4000 },
-      signal,
-    );
+  const MAX_ATTEMPTS = 2;
+  let lastErr;
 
-    const parsed = extractJson(content);
+  for (let attempt = 1; attempt <= MAX_ATTEMPTS; attempt++) {
+    if (signal.aborted) break;
+    try {
+      const content = await callProvider(
+        [
+          { role: 'system', content: buildSystemPrompt(body) },
+          { role: 'user', content: buildUserMessage(body) },
+        ],
+        { max_tokens: 4000 },
+        signal,
+      );
 
-    if (body.section === 'all') {
-      validateFullAssets(parsed);
-    } else {
-      validateShape(parsed);
+      const parsed = extractJson(content);
+
+      if (body.section === 'all') {
+        validateFullAssets(parsed);
+      } else {
+        validateShape(parsed);
+      }
+
+      const result = body.section === 'all' ? parsed : pickResultForSection(body.section, parsed);
+      return json(res, result);
+    } catch (err) {
+      if (err && (err.name === 'AbortError' || /client disconnected/i.test(err.message))) {
+        return;
+      }
+      lastErr = err;
+      if (attempt < MAX_ATTEMPTS) {
+        console.warn(`[generate] attempt ${attempt} failed, retrying… (${err.message})`);
+      }
     }
-
-    const result = body.section === 'all' ? parsed : pickResultForSection(body.section, parsed);
-    json(res, result);
-  } catch (err) {
-    if (err && (err.name === 'AbortError' || /client disconnected/i.test(err.message))) {
-      return;
-    }
-    console.error('[generate]', err);
-    json(res, { error: err.message || 'Generation failed' }, 500);
   }
+
+  console.error('[generate]', lastErr);
+  json(res, { error: lastErr?.message || 'Generation failed' }, 500);
 }
 
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