feat(webui): add logger, hwnd, and close handler APIs

- add `setLogger()` for custom logging callback support
- add `getHwnd()` to retrieve window handle (Win32/Linux)
- add `setCloseHandlerWv()` to handle WebView close events
- add `LoggerLevel` enum with Debug, Info, and Error levels
- update webui dependency to latest commit
- clean up code formatting and whitespace across examples

Author: jinzhongjia

build.zig.zon

@@ -5,8 +5,8 @@
     .minimum_zig_version = "0.14.0",
     .dependencies = .{
         .webui = .{
-            .hash = "webui-2.5.0-beta.4-pxqD5ahSNwAE_vnS170oThHZ3blPcHQ85Ut2XHf65f1u",
-            .url = "https://github.com/webui-dev/webui/archive/dcc776a0f6bdf244d0024042253ebd194271ac9b.tar.gz",
+            .hash = "webui-2.5.0-beta.4-pxqD5YHONwCkBgMnrKMXMcTvObSyZEBPPJq-gdULMwIj",
+            .url = "https://github.com/webui-dev/webui/archive/e1018c5d8c251fad9fa8fc2f9d2d50af06bd2fed.tar.gz",
         },
     },
     .paths = .{

examples/advanced_window/main.zig

@@ -25,7 +25,7 @@ pub fn main() !void {
     webui.setTimeout(30); // 30 seconds timeout
 
     // Set window icon (raw SVG string)
-    const icon_svg = 
+    const icon_svg =
         "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\">" ++
         "<circle cx=\"8\" cy=\"8\" r=\"8\" fill=\"#4285F4\"/></svg>";
     window.setIcon(icon_svg, "image/svg+xml");

examples/compat.zig

@@ -44,14 +44,15 @@ pub fn fixedBufferStream(buffer: []u8) FixedBufferStream {
 }
 
 /// Type alias for FixedBufferStream that works in both versions
-pub const FixedBufferStream = if (is_zig_0_16_or_later) blk: {
+pub const FixedBufferStream = if (is_zig_0_16_or_later)
+blk: {
     // Zig 0.16: Define our own FixedBufferStream with custom Writer
     break :blk struct {
         buffer: []u8,
         pos: usize = 0,
 
         const Self = @This();
-        
+
         // Custom Writer implementation for Zig 0.16
         pub const Writer = struct {
             context: *Self,

examples/comprehensive/main.zig

@@ -283,7 +283,7 @@ fn getSystemInfo(e: *webui.Event) void {
     const builtin = @import("builtin");
 
     var buffer: [1024]u8 = undefined;
-    const info = std.fmt.bufPrintZ(buffer[0..], 
+    const info = std.fmt.bufPrintZ(buffer[0..],
         \\{{"os":"{s}","arch":"{s}","zigVersion":"{s}","webuiVersion":"2.5.0","timestamp":{}}}
     , .{ @tagName(builtin.os.tag), @tagName(builtin.cpu.arch), @import("builtin").zig_version_string, compat.timestamp() }) catch "{}";