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/widget/image/tests.rs

@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: LGPL-2.1-only
+// Copyright (C) 2026 Liberux Labs, S. L. <info@liberux.net>
+
+use super::*;
+
+fn solid_rgba( w: u32, h: u32 ) -> Arc<Vec<u8>>
+{
+	Arc::new( vec![ 255u8; ( w * h * 4 ) as usize ] )
+}
+
+// ── builders / defaults ───────────────────────────────────────────────────
+
+#[ test ]
+fn new_uses_documented_defaults()
+{
+	let img = Image::new( solid_rgba( 4, 4 ), 4, 4 );
+	assert_eq!( img.width,  4 );
+	assert_eq!( img.height, 4 );
+	assert!( !img.cover );
+	assert!( img.display_size.is_none() );
+	assert_eq!( img.opacity, 1.0 );
+}
+
+#[ test ]
+fn cover_builder_sets_cover_flag()
+{
+	let img = Image::new( solid_rgba( 4, 4 ), 4, 4 ).cover();
+	assert!( img.cover );
+}
+
+#[ test ]
+fn size_builder_sets_explicit_display_size()
+{
+	let img = Image::new( solid_rgba( 4, 4 ), 4, 4 ).size( 120.0, 80.0 );
+	assert_eq!( img.display_size, Some( ( 120.0, 80.0 ) ) );
+}
+
+#[ test ]
+fn size_builder_clamps_negative_dimensions_to_zero()
+{
+	let img = Image::new( solid_rgba( 4, 4 ), 4, 4 ).size( -10.0, -20.0 );
+	assert_eq!( img.display_size, Some( ( 0.0, 0.0 ) ) );
+}
+
+#[ test ]
+fn opacity_clamps_to_unit_interval()
+{
+	assert_eq!( Image::new( solid_rgba( 1, 1 ), 1, 1 ).opacity( -0.5 ).opacity, 0.0 );
+	assert_eq!( Image::new( solid_rgba( 1, 1 ), 1, 1 ).opacity(  1.5 ).opacity, 1.0 );
+	assert_eq!( Image::new( solid_rgba( 1, 1 ), 1, 1 ).opacity(  0.5 ).opacity, 0.5 );
+}
+
+// ── preferred_size ────────────────────────────────────────────────────────
+
+#[ test ]
+fn preferred_size_default_scales_height_to_match_width_aspect()
+{
+	// 200×100 source image at max_width = 400 → scale = 2 → height 200.
+	let img = Image::new( solid_rgba( 200, 100 ), 200, 100 );
+	let ( w, h ) = img.preferred_size( 400.0 );
+	assert_eq!( w, 400.0 );
+	assert_eq!( h, 200.0 );
+}
+
+#[ test ]
+fn preferred_size_with_explicit_size_wins_over_aspect_logic()
+{
+	let img = Image::new( solid_rgba( 200, 100 ), 200, 100 ).size( 50.0, 25.0 );
+	assert_eq!( img.preferred_size( 1000.0 ), ( 50.0, 25.0 ) );
+}
+
+#[ test ]
+fn preferred_size_cover_mode_keeps_aspect_ratio()
+{
+	// 100×50 source in cover mode at max_width = 300 → height = 300 * (50/100) = 150.
+	let img = Image::new( solid_rgba( 100, 50 ), 100, 50 ).cover();
+	let ( w, h ) = img.preferred_size( 300.0 );
+	assert_eq!( w, 300.0 );
+	assert_eq!( h, 150.0 );
+}
+
+#[ test ]
+fn preferred_size_cover_and_default_match_for_uniform_scaling()
+{
+	// When the source aspect matches the requested width, cover and the
+	// default fit-width path produce identical sizes — they only diverge
+	// when the source is taller than wide.
+	let normal  = Image::new( solid_rgba( 100, 50 ), 100, 50 );
+	let covered = Image::new( solid_rgba( 100, 50 ), 100, 50 ).cover();
+	assert_eq!( normal.preferred_size( 200.0 ), covered.preferred_size( 200.0 ) );
+}
+
+// ── Arc sharing ───────────────────────────────────────────────────────────
+
+#[ test ]
+fn rgba_buffer_is_shared_via_arc_not_cloned_per_image()
+{
+	let bytes = solid_rgba( 8, 8 );
+	let strong_before = Arc::strong_count( &bytes );
+
+	let img = Image::new( bytes.clone(), 8, 8 );
+	assert_eq!( Arc::strong_count( &bytes ), strong_before + 1 );
+
+	// Same buffer goes into a second image — strong count rises again.
+	let img2 = Image::new( bytes.clone(), 8, 8 );
+	assert_eq!( Arc::strong_count( &bytes ), strong_before + 2 );
+
+	drop( img );
+	drop( img2 );
+	assert_eq!( Arc::strong_count( &bytes ), strong_before );
+}