milestone 18: collapse duplicated infrastructure into shared listener core, crud list helper, resource shells, transport race, name and line helpers, ui modules

src/tests.zig

@@ -24,6 +24,7 @@ comptime {
     _ = @import("upstream/pool.zig");
     _ = @import("upstream/dot_client.zig");
     _ = @import("upstream/dot_client_live_test.zig");
+    _ = @import("server/listener.zig");
     _ = @import("server/handler.zig");
     _ = @import("server/udp_server.zig");
     _ = @import("server/tcp_server.zig");