fix(event_handling): improve Zig version compatibility checks

- update ArrayList compatibility logic to support Zig 0.15+
- adjust version checks from 0.16 to 0.15 for managed/unmanaged ArrayList
- update webui dependency to latest commit in build.zig.zon

Author: jinzhongjia

build.zig.zon

@@ -5,8 +5,8 @@
     .minimum_zig_version = "0.14.0",
     .dependencies = .{
         .webui = .{
-            .hash = "webui-2.5.0-beta.4-pxqD5UtONwCfX1N9d0zUHHT3igVMHYd6KnI87tg0vyA7",
-            .url = "https://github.com/webui-dev/webui/archive/897a4406e5e6bdff135a48848343b3b0b983fa75.tar.gz",
+            .hash = "webui-2.5.0-beta.4-pxqD5ahSNwAE_vnS170oThHZ3blPcHQ85Ut2XHf65f1u",
+            .url = "https://github.com/webui-dev/webui/archive/dcc776a0f6bdf244d0024042253ebd194271ac9b.tar.gz",
         },
     },
     .paths = .{

examples/event_handling/main.zig

@@ -27,7 +27,7 @@ fn ensureContextsInitialized() void {
     }
     if (online_users == null) {
         // Version compatibility: Zig 0.14/0.15 use managed ArrayList, 0.16+ use unmanaged
-        if (comptime builtin.zig_version.minor >= 16) {
+        if (comptime builtin.zig_version.minor >= 15) {
             // Zig 0.16+ - ArrayList is unmanaged by default
             online_users = std.ArrayList(OnlineUser){};
         } else {
@@ -223,7 +223,7 @@ fn userLogin(e: *webui.Event) void {
     ensureContextsInitialized();
     if (online_users) |*users| {
         // Version compatibility for append method
-        if (comptime builtin.zig_version.minor >= 16) {
+        if (comptime builtin.zig_version.minor >= 15) {
             // Zig 0.16+ - unmanaged ArrayList needs allocator parameter
             users.append(allocator, OnlineUser{ .client_id = e.client_id, .username = context.username }) catch {
                 std.debug.print("Failed to add user to online list\n", .{});