refactor: split every monolithic module into focused submodules

Each source file that had grown beyond a single concern is replaced by an identically-named directory containing focused submodules. `src/event_loop/mod.rs` (878 lines) becomes a directory with clipboard, context_menu, cursor_shape, drag, focus, handlers, invalidation, overlays_reconcile, repeat, run, surface, text_editing, and tooltip. Every widget, input handler, and theme component follows the same split. Public interfaces are unchanged — only the internal file layout moves.
image bumped from 0.25.2 to 0.25.9.

src/input/keyboard/dispatch.rs

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: LGPL-2.1-only
+// Copyright (C) 2026 Liberux Labs, S. L. <info@liberux.net>
+
+use smithay_client_toolkit::seat::keyboard::{ KeyEvent, Keysym };
+
+use crate::app::App;
+use crate::event_loop::{ AppData, SurfaceFocus };
+
+impl<A: App> AppData<A>
+{
+	/// Run the same dispatch logic that the Wayland press-key handler
+	/// runs, but without the trait-callback signature — used both by
+	/// the trait method and by the key-repeat timer.
+	pub( crate ) fn dispatch_key( &mut self, focus: SurfaceFocus, event: KeyEvent )
+	{
+		// `set_focus` (Tab handling) needs a `QueueHandle`. Cloning is
+		// cheap (an `Arc`-equivalent under the hood) and avoids
+		// threading the qh through every helper.
+		let qh = self.qh.clone();
+		let qh = &qh;
+		match event.keysym
+		{
+			Keysym::BackSpace                 => self.handle_key_backspace( focus, &event ),
+			Keysym::Delete                    => self.handle_key_delete( focus, &event ),
+			Keysym::Return | Keysym::KP_Enter => self.handle_key_return( focus, &event ),
+			Keysym::Down | Keysym::Up         => self.handle_key_arrow_vertical( focus, &event ),
+			Keysym::Left | Keysym::Right      => self.handle_key_arrow_horizontal( focus, &event ),
+			Keysym::Home                      => self.handle_key_home( focus ),
+			Keysym::End                       => self.handle_key_end( focus ),
+			Keysym::a | Keysym::A if self.ctrl_pressed => self.handle_key_ctrl_a( focus ),
+			Keysym::c | Keysym::C if self.ctrl_pressed => self.handle_key_ctrl_c( focus ),
+			Keysym::x | Keysym::X if self.ctrl_pressed => self.handle_key_ctrl_x( focus ),
+			Keysym::v | Keysym::V if self.ctrl_pressed => self.handle_key_ctrl_v( focus ),
+			Keysym::Tab | Keysym::ISO_Left_Tab => self.handle_key_tab( focus, &event, qh ),
+			Keysym::Escape                    => self.handle_key_escape( focus, &event, qh ),
+			Keysym::space                     => self.handle_key_space( focus, &event ),
+			_                                 => self.handle_key_default( focus, &event ),
+		}
+		self.surface_mut( focus ).request_redraw();
+	}
+}