castle-search: read Google results again by resolving its /goto links

Google now wraps every result as google.com/goto?url=<opaque token>. The
self-host filter discarded all of them, so every Google search failed with
'nothing could be parsed'. Accept /goto, resolve it node-side from the
302 Location, and when Google answers its 'Verifying your request'
interstitial instead, keep the wrapped link and put the displayed
breadcrumb in the snippet.

1 files changed, 6 insertions, 3 deletions

diff --git a/castle-search/src/engines.ts b/castle-search/src/engines.ts
index ef8baef..76716c6 100644
--- a/castle-search/src/engines.ts
+++ b/castle-search/src/engines.ts
@@ -61,7 +61,7 @@ export type ExtractionConfig = {
   /** Items matching any of these are ads or non-web cards, and are skipped. */
   exclude?: string[];
   /** How outbound links are wrapped, if they are. */
-  unwrap: "none" | "ddg" | "bing";
+  unwrap: "none" | "ddg" | "bing" | "google";
   /** Hosts belonging to the engine itself; links to them are not results. */
   selfHostPattern: string;
 };
@@ -99,8 +99,11 @@ const GOOGLE: EngineDefinition = {
   extraction: {
     mode: "headings",
     roots: ["#rso", "#search"],
-    unwrap: "none",
-    selfHostPattern: String.raw`^https?://(www\.)?google\.[a-z.]+/`,
+    // Every result is `google.com/goto?url=<opaque token>` (since at least
+    // 2026-11-06). The page cannot unwrap it; search.ts resolves it afterwards.
+    // It must not count as Google's own link, hence the lookahead.
+    unwrap: "google",
+    selfHostPattern: String.raw`^https?://(www\.)?google\.[a-z.]+/(?!goto\?)`,
   },
 };