fix: prevent AI matching write timeout (#197)

server/cmd/api/server_timeout_test.go

@@ -0,0 +1,19 @@
+package api
+
+import (
+	"testing"
+	"time"
+)
+
+func TestValidatedAPIWriteTimeoutProtectsSynchronousAIRequests(t *testing.T) {
+	if _, err := validatedAPIWriteTimeout(2); err == nil {
+		t.Fatal("two-second write timeout must be rejected")
+	}
+	got, err := validatedAPIWriteTimeout(620)
+	if err != nil {
+		t.Fatalf("620-second write timeout should be accepted: %v", err)
+	}
+	if got != 620*time.Second {
+		t.Fatalf("write timeout = %s, want 620s", got)
+	}
+}