Fix crash on maximize: switch eframe to wgpu (Vulkan) renderer

Maximizing the window crashed the GUI immediately with:

  Error: Glutin(Error { raw_code: Some(12291), kind: OutOfMemory })

12291 is EGL_BAD_ALLOC. The default eframe `glow` (OpenGL) renderer
fails to reallocate its surface when the window resizes to maximized
dimensions on NVIDIA + Wayland — a well-known fragility of NVIDIA's
GL-on-Wayland path. It surfaces as a clean Err from run_native (not a
panic), which is why nothing landed in yt-offline.crash.log.

Switch to the wgpu (Vulkan) renderer, which reconfigures the swapchain
cleanly on resize:
- Cargo.toml: drop eframe's default glow feature, enable wgpu, keep
  accesskit / default_fonts / wayland / x11.
- main.rs: NativeOptions.renderer = Renderer::Wgpu.

Verified on the NVIDIA GTX 1650 SUPER + Wayland session that triggered
the crash: app launches and maximizes cleanly, no EGL error.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/main.rs

@@ -78,6 +78,10 @@ fn main() -> eframe::Result<()> {
             .with_inner_size([1280.0, 820.0])
             .with_min_inner_size([800.0, 500.0])
             .with_title("yt-offline"),
+        // Force the wgpu (Vulkan) renderer. The default glow/OpenGL path
+        // crashes on NVIDIA + Wayland when the window is maximized
+        // (Glutin EGL_BAD_ALLOC). wgpu reconfigures the swapchain cleanly.
+        renderer: eframe::Renderer::Wgpu,
         ..Default::default()
     };
     eframe::run_native(