build: bump zenai

Picks up effort=none sending thinking disabled to Anthropic (zenai#19)
and the reasoning max_tokens floor on every provider (zenai#18).
ErrorDetail now carries the parsed error message instead of the raw
body.

build.zig.zon

@@ -36,8 +36,8 @@
             .hash = "sqlite3-3.53.2-DMxLWuAOAAA_Px0arJOIOaP4AKEu5prbsQgPMA35W1zz",
         },
         .zenai = .{
-            .url = "git+https://github.com/lightpanda-io/zenai.git#15d6e4c37b4508373ba7ae6a2f400717f4ff9d89",
-            .hash = "zenai-0.0.0-iOY_VLq7BgAZIQzUIZ4w8ikmwpuNaJdyJSvKYCtnVing",
+            .url = "git+https://github.com/lightpanda-io/zenai.git#43658858f6c677b107a0f4fb76dc92e5ac97d3a4",
+            .hash = "zenai-0.0.0-iOY_VKquBgBT36nAFRpM4tQki3JNZgFvTwQY6Pz-wiQx",
         },
         .isocline = .{
             .url = "git+https://github.com/arrufat/isocline#ec538faf435c616a6b38716f53980b5815c30f8a",

src/browser/tools.zig

@@ -1214,7 +1214,7 @@ fn apiSearch(
         if (client.last_error.status) |status| {
             log.warn(.browser, @tagName(engine.tag) ++ " non-2xx", .{
                 .status = status,
-                .body = client.last_error.body,
+                .message = client.last_error.message,
             });
         }
         return err;