Add account components 386-405; Reduce setting, PinInput Cmd+V

Twenty account components: SettingsList, OptionCycler, KeyBindings,
ControllerMap, ProfileCard, CharacterCreator, LoginForm, PasswordGrid,
SessionList, LanguagePicker, PalettePicker, VolumeMixer,
DifficultySelect, AccessibilityOptions, AccountSwitcher, PlayerSelect,
TwoFactor, About, PatchNotes and FeedbackForm.

The components never check credentials, and no secret reaches the log:
LoginForm reports Submitted and the caller counts Failures; each new
failure clears the password, refocuses it, shakes the form and names no
field. TwoFactor builds on input.PinInput and drains an epoch-aligned
period bar. PalettePicker draws each tile in its own palette on a
pixel.Pad grid.

pixel.Settings.Reduce stills motion like the system preference, the
micro font gains '?', display.Face draws avatar faces anywhere, and
input.PinInput pastes on Cmd+V as native hosts send it.

pixel/settings.go

@@ -24,6 +24,8 @@ type Settings struct {
 	Now func() time.Time
 	// Inert controls take no input, as under a busy veil.
 	Inert bool
+	// Reduce stills motion, as the system preference does.
+	Reduce bool
 }
 
 // Kit is one frame's settings, captured by components.
@@ -92,7 +94,7 @@ func K(c *ui.Context) Kit {
 	if s.Now != nil {
 		now = s.Now()
 	}
-	return Kit{pal: s.Palette, dot: float32(s.Dot), locale: s.Locale, now: now, clock: s.Now, reduce: c.Preferences().ReduceMotion}
+	return Kit{pal: s.Palette, dot: float32(s.Dot), locale: s.Locale, now: now, clock: s.Now, reduce: c.Preferences().ReduceMotion || s.Reduce}
 }
 
 func frameOf(c *ui.Context) *frame {