v0.3.0

Fixed

• The filer example no longer confuses scrolling with dragging a file out.
  The drag-out gesture armed on a press anywhere inside the list bounds — which
  include the scrollbar pinned to the right edge — so grabbing the thumb both
  scrolled and armed a drag, and the drag won on the next move (yanking a file
  out instead of scrolling). It now yields the scrollbar strip via the new
  List::scrollbar_hit. Relatedly, ScrollBar and Slider now end an
  in-progress thumb drag on PointerLeave: with no OS pointer grab, a drag
  interrupted by the pointer leaving the window (as an outbound drag-and-drop
  does by revoking pointer focus) left a stale drag flag set, so the thumb
  chased the cursor when it returned. (#35)
• TextEditor is no longer pathologically slow to repaint with large or
  long-lined documents. Each frame rebuilt every visible row's caret-offset
  table by re-measuring every prefix of the line (O(n²)) and re-rasterized every
  glyph from scratch — including ones scrolled off the right edge — and the
  runtime repaints the whole tree on every scroll notch and resize step. The
  font now caches rasterized glyphs (in a bounded LRU) and per-glyph advances,
  the caret table is built in one O(n) pass over those advances, and
  Font::draw_phys stops at the clip's right edge. Output is snapshot-identical;
  the worst case is ~100× faster. (#34)
• include_svg! now maps every contour through its abs_transform (the full
  ancestor chain, viewBox→viewport origin offset and scale included), while still
  framing the baked image by the SVG's declared viewport (the box resvg renders
  into). This fixes SVGs that previously baked mis-scaled or off-frame — a viewBox
  with a non-zero origin or an <svg> whose width/height differ from the viewBox
  — without disturbing artwork that is deliberately padded inside its viewBox
  (the scrollbar, dropdown, dialog, and checkbox marks). (#27, #31)
• Firing a menu item by its keyboard mnemonic no longer leaks the letter into
  whatever the item opens. Picking File → Open with Alt+F, O previously typed an
  "o" into the dialog's freshly focused File name field; the menu now swallows
  the keystroke through its release. (#30)

Added

• FileDialog: a modern, single-pane Open / Save file picker (built on Modal)
  with the current path along the top, one combined list of folders and files,
  a "File name" field, and a "File types" filter dropdown — the flat layout
  modern KDE / Windows pickers use. Section labels carry Alt+L / Alt+N / Alt+T
  accelerators. Glob-based FileFilters drive the filter. The notepad example
  now uses it for File → Open and File → Save As. (#26)
• Window-chrome screenshots: MockBackend::render_framed wraps a rendered
  client area in Canoe's default desktop style — a teal background, a soft drop
  shadow, a navy active title bar, and a window frame. Choose the frame via
  WindowChrome::resizable / fixed / dialog (WindowFrame), which mirror
  Canoe's three window paints and differ in their window controls and border;
  with_desktop_background / with_margin tweak the backdrop. Windows are
  always drawn active. See the new chrome example. (#33)
• include_svg! now honors clip-path: clip regions are intersected with the
  drawn geometry at build time (via i_overlay), so clipped artwork bakes
  correctly instead of being dropped. i_overlay is a compile-time-only
  dependency of saudade-macros and never reaches a shipped binary. (#27)
• include_svg! takes an optional crop argument —
  include_svg!("logo.svg", crop) — that frames the baked image by the tight
  bounding box of the drawn geometry instead of the SVG's declared viewport,
  dropping any padding so the mark fills its target rect. The default is still
  viewport framing (matching resvg). (#31)
• include_svg! now approximates linear and radial gradient paint instead of
  dropping it: each gradient bakes into a stack of flat-color bands (strips for
  linear, nested disks for radial) clipped to the painted shape. Gradient fills
  and strokes are no longer reported as unsupported. (#27)
• File drag-and-drop: drop files from the OS onto a window. New Event::DragEnter
  / DragMove / DragLeave / Drop events carry a DragData of file paths,
  and a drop target opts in by calling EventCtx::accept_drop() while handling
  DragEnter / DragMove. Works on macOS, Windows, X11, and Wayland. See the
  dnd example. (#23)
• Dragging files out of a window (drag source), Wayland only:
  EventCtx::start_drag() begins an OS text/uri-list drag from a widget's
  press-and-drag gesture, with an icon that follows the cursor and shows a green
  checkmark over a target that accepts the drop or a red cross elsewhere. The
  winit backends (macOS, Windows, X11) expose no API to initiate a drag, so it
  is a no-op there. See the filer example. (#23)
• Dropdown popups now scroll: a list longer than 12 rows caps the popup height
  and grows a vertical scrollbar — mouse wheel, draggable thumb, Page Up/Down,
  and scroll-the-selection-into-view all work — so a long list (e.g. the full
  set of keyboard layouts) stays usable instead of opening a popup taller than
  the screen. (#28)
• ScrollBar::end_drag() to abandon an in-progress thumb drag, for hosts that
  can be torn down mid-drag (such as a dropdown popup that closes on focus
  loss). (#28)
• ListItem::with_svg_icon: list rows can now show a compile-time-baked
  SvgImage (from include_svg!), drawn crisply at any DPI, alongside the
  existing raster ListIcon. (#32)
• EventCtx::swallow_key_until_release(): a handler that fully acts on a key
  press can ask the runtime to discard the rest of it — the trailing Char,
  autorepeat, and the release. (#30)
• Painter::light_button() (a lighter chrome frame: square outline, single
  top/left highlight, 2px bottom/right shadow) and Painter::fill_checker() (a
  two-tone DPI-aware checkerboard fill). (#29)

Changed

• The folder / file / up-arrow icons in the file dialog and the filer example
  are now real SVG assets (assets/icons/*.svg) baked via include_svg! and
  shared between the two, instead of hand-coded pixel buffers. (#32)
• ScrollBar chrome now matches Win 3.1 more closely: the arrow buttons and
  thumb use the lighter light_button frame (square outline, one highlight line
  instead of two), the track gains a thin black outline that collapses into the
  button/thumb frames where they meet, the arrow glyphs sit centered on the
  button face with the classic margin instead of filling it edge to edge, and
  the empty track shows the classic black-on-gray "newsprint"
  checkerboard instead of a flat gray fill. (#29)
• Adjacent ScrollBar outlines no longer double up into a 2px band where they
  meet — each shared edge collapses to a single 1px line: a thumb slid flush
  against an arrow button shares that button's edge, and a scrollbar embedded in
  a List or TextEditor shares its outer edge with the field's border. (#29)