* Brush and Pencil: hold ~ to erase
Fixes#3439. Holding ~ (the backtick key) with the Brush or Pencil makes
the strokes started while it is held erase, with that tool's own brush,
as in Photoshop; releasing it paints again and the tool never changes.
The key is a Tools › Temporary binding (tools.temporary.erase), so it
can be rebound or removed in Keyboard Shortcuts.
* Brush and Pencil: Clear painting mode, used by ~
Photoshop's Clear joins the Brush's and Pencil's Mode menus, after
Dissolve: chosen there, every stroke erases with that tool's brush until
another mode is picked. Holding ~ now puts the stroke in Clear mode too,
and the Mode menu shows Clear while the key is held. History names the
tool rather than the Eraser. Agents get it as "mode": "clear" on
paint.stroke and paint.pencil.
* Keep the Smoothing doc comment on smoothing_field
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Progress docs per craftrules standards/progress-docs.md: target-app parity (merges parity-estimate.md), gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and UI, brush, format, hardware and localization parity docs. docs/parity.md is now docs/parity-checklist.md.
The Windows test failure (file_dialog::tests::save_dialogs_remember_where_each_document_was_last_saved) is pre-existing on main: the test hard-codes POSIX paths.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
