ci: 5s unfurl timeout on CI, configurable via UNFURL_TIMEOUT_MS

.github/workflows/deploy.yml

@@ -159,6 +159,7 @@ jobs:
           GITEA_ORG: giersig.eu
           OG_CACHE_DIR: /usr/local/git/.cache/og
           UNFURL_CACHE_DIR: /usr/local/git/.cache/unfurl
+          UNFURL_TIMEOUT_MS: 5000
 
       - name: Save eleventy-fetch cache
         run: |

lib/unfurl-shortcode.js

@@ -7,6 +7,9 @@ const CACHE_DIR = process.env.UNFURL_CACHE_DIR || resolve(import.meta.dirname, "
 const CACHE_DURATION_MS = 7 * 24 * 60 * 60 * 1000; // 1 week
 const FAILURE_CACHE_MS = 7 * 24 * 60 * 60 * 1000; // 1 week — YouTube/bot-blocked sites never succeed, no point retrying daily
 const USER_AGENT = "Mozilla/5.0 (compatible; Indiekit/1.0; +https://getindiekit.com)";
+// CI sets UNFURL_TIMEOUT_MS=5000 to fail fast on uncached URLs rather than hanging 22s each
+const UNFURL_TIMEOUT_MS = process.env.UNFURL_TIMEOUT_MS ? parseInt(process.env.UNFURL_TIMEOUT_MS, 10) : 22000;
+const UNFURL_HTTP_TIMEOUT_MS = Math.max(1000, UNFURL_TIMEOUT_MS - 4000);
 
 // Concurrency limiter — prevents overwhelming outbound network
 let activeRequests = 0;
@@ -135,10 +138,10 @@ export async function prefetchUrl(url) {
       // Hard outer deadline guards against TCP-level hangs that bypass unfurl's
       // own timeout (which only covers HTTP read, not connection establishment).
       const deadline = new Promise((_, reject) =>
-        setTimeout(() => reject(new Error("hard deadline 22s")), 22000)
+        setTimeout(() => reject(new Error(`hard deadline ${UNFURL_TIMEOUT_MS}ms`)), UNFURL_TIMEOUT_MS)
       );
       return await Promise.race([
-        unfurl(url, { timeout: 18000, headers: { "User-Agent": USER_AGENT } }),
+        unfurl(url, { timeout: UNFURL_HTTP_TIMEOUT_MS, headers: { "User-Agent": USER_AGENT } }),
         deadline,
       ]);
     } catch (err) {