A settings row's control slot shrinks to the box, so a control's text
wraps and a palette's row folds; the font size's sample wraps in a plain
block. A notice's boxes carry their channel's name and fold under the
kind's name when narrow. canvas::panel::editing takes the owner's
handler itself: the design panels, the structure editor, the index
manager and the privacy, notice and startup settings take theirs at
render and fail loud without one. Apply fails loud if pressed while the
proxy does not read. Tests cover Apply resting on a bad port, the way
back resting at the default size and a box pressed off.
SettingsLayout lists sections down the side and shows the open one, the
list going above the page in a narrow box; SettingsSection and
SettingsRow title and hold settings, a row's control wrapping under its
name. SettingsSearch finds a setting by its name or words and opens its
section. ThemeSelector, AccentColorPicker, FontSizeControl and
DensitySelector set the look; KeyboardShortcutsList finds shortcuts by
every word; ProxySettings, PrivacySettings, NotificationSettings,
StartupSettings, StorageSettings with its clear, ImportExportSettings,
ResetToDefault, FeatureFlags and DeveloperModeToggle fill the rest.
Every handler a control needs is required and fails loud when missing.
ColorPalette wraps its swatches in a row capped at its columns, so it
keeps their size in a box sized by its content, and its swatches carry
the palette's id. ThemeSwitcher points here: src/theme sits under the
chapters that draw with buttons.
ZacharyZhang-NY