fix: harden launch server runtime and public config

src/routes/ai.js

@@ -1495,7 +1495,7 @@ function registerAiRoutes(router) {
         res.flushHeaders();
 
         const abortController = new AbortController();
-        const streamTimer = setTimeout(() => abortController.abort(), 60000);
+        const streamTimer = setTimeout(() => abortController.abort(), 120000);
         req.on("close", () => { clearTimeout(streamTimer); abortController.abort(); });
 
         try {
@@ -1554,7 +1554,7 @@ function registerAiRoutes(router) {
         }
       } else {
         const nonStreamAbort = new AbortController();
-        const nonStreamTimer = setTimeout(() => nonStreamAbort.abort(), 60000);
+        const nonStreamTimer = setTimeout(() => nonStreamAbort.abort(), 120000);
         const upstream = await fetch(url, { method: "POST", headers: reqHeaders, body: reqBody, signal: nonStreamAbort.signal });
         clearTimeout(nonStreamTimer);
         const text = await upstream.text().catch(() => "");
@@ -1578,7 +1578,7 @@ function registerAiRoutes(router) {
               const fallbackHeaders = { "Content-Type": "application/json", Authorization: "Bearer " + slotResult.apiKey };
               const fallbackBody = JSON.stringify({ model: fallbackConfig.model, messages, stream: false, temperature: temperature || 0.7, max_tokens: 4096 });
               const fbAbort = new AbortController();
-              const fbTimer = setTimeout(() => fbAbort.abort(), 60000);
+              const fbTimer = setTimeout(() => fbAbort.abort(), 90000);
               const fbUpstream = await fetch(fallbackUrl, { method: "POST", headers: fallbackHeaders, body: fallbackBody, signal: fbAbort.signal });
               clearTimeout(fbTimer);
               const fbText = await fbUpstream.text().catch(() => "");
@@ -1609,7 +1609,7 @@ function registerAiRoutes(router) {
     } catch (err) {
       releaseLease(slotResult);
       console.error("[ai/chat] error:", err.message);
-      res.status(500).json({ error: err.message });
+      res.status(err.name === "AbortError" ? 504 : 500).json({ error: err.name === "AbortError" ? "AI 上游响应超时，请重试" : err.message });
     }
   });
 
@@ -1690,7 +1690,7 @@ function registerAiRoutes(router) {
 
       res.json({ taskId: String(rows[0].id), conversationId: rows[0].conversation_id });
     } catch (err) {
-      res.status(500).json({ error: err.message });
+      res.status(err.name === "AbortError" ? 504 : 500).json({ error: err.name === "AbortError" ? "AI 上游响应超时，请重试" : err.message });
     }
   });
 
@@ -1714,7 +1714,7 @@ function registerAiRoutes(router) {
 
       res.json(formatAiTaskRow(rows[0]));
     } catch (err) {
-      res.status(500).json({ error: err.message });
+      res.status(err.name === "AbortError" ? 504 : 500).json({ error: err.name === "AbortError" ? "AI 上游响应超时，请重试" : err.message });
     }
   });
 
@@ -1761,7 +1761,7 @@ function registerAiRoutes(router) {
         taskEvents.off(`task:${taskId}`, onUpdate);
       });
     } catch (err) {
-      if (!res.headersSent) res.status(500).json({ error: err.message });
+      if (!res.headersSent) res.status(err.name === "AbortError" ? 504 : 500).json({ error: err.name === "AbortError" ? "AI 上游响应超时，请重试" : err.message });
     }
   });
 
@@ -1826,7 +1826,7 @@ function registerAiRoutes(router) {
       res.end(buffer);
     } catch (err) {
       console.error("[ai/tasks/download] failed:", err.message);
-      if (!res.headersSent) res.status(500).json({ error: err.message });
+      if (!res.headersSent) res.status(err.name === "AbortError" ? 504 : 500).json({ error: err.name === "AbortError" ? "AI 上游响应超时，请重试" : err.message });
     }
   });
 
@@ -1854,7 +1854,7 @@ function registerAiRoutes(router) {
       res.end(buffer);
     } catch (err) {
       console.error("[ai/proxy-download] failed:", err.message);
-      if (!res.headersSent) res.status(500).json({ error: err.message });
+      if (!res.headersSent) res.status(err.name === "AbortError" ? 504 : 500).json({ error: err.name === "AbortError" ? "AI 上游响应超时，请重试" : err.message });
     }
   });
 }