feat: add show_icons option to disable input popup icons

The icon shown on cd/create/rename/shell input popups (added in #4080) had
no way to opt out short of clearing all icon rules, which would also
remove file-type icons everywhere else.

Add a `show_icons` option under `[input]`, enabled by default, that
short-circuits the icon lookup for input popups specifically.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/):
 - Make help menu a command palette ([#4074])
 - H/M/L Vim-like motion for moving cursor relative to viewport ([#3970])
 - Context-aware icons for inputs ([#4080])
+- New `show_icons` option under `[input]` to toggle icons on input popups ([#4100])
 - Show file icons in trash/delete/overwrite confirmations ([#4096])
 - Dynamic keymap Lua API ([#4031])
 - New `ui.Input` element ([#4040])
@@ -1768,3 +1769,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/):
 [#4074]: https://github.com/sxyazi/yazi/pull/4074
 [#4080]: https://github.com/sxyazi/yazi/pull/4080
 [#4096]: https://github.com/sxyazi/yazi/pull/4096
+[#4100]: https://github.com/sxyazi/yazi/pull/4100

yazi-config/preset/yazi-default.toml

@@ -176,6 +176,7 @@ previewers = [
 
 [input]
 cursor_blink = false
+show_icons   = true
 
 # cd
 cd_title  = "Change directory:"

yazi-config/src/popup/input.rs

@@ -7,6 +7,7 @@ use yazi_widgets::input::InputOpt;
 #[derive(Deserialize, DeserializeOver, DeserializeOver2)]
 pub struct Input {
 	pub cursor_blink: bool,
+	pub show_icons:   bool,
 
 	// cd
 	pub cd_title:  String,

yazi-fm/src/input/input.rs

@@ -2,7 +2,7 @@ use std::path::Path;
 
 use ratatui_core::{buffer::Buffer, layout::{Margin, Rect}, text::Line, widgets::Widget};
 use ratatui_widgets::{block::Block, borders::BorderType};
-use yazi_config::{Icon, THEME};
+use yazi_config::{Icon, THEME, YAZI};
 use yazi_core::Core;
 use yazi_fs::{cha::{Cha, ChaKind}, file::File};
 use yazi_shim::path::CROSS_SEPARATOR;
@@ -15,6 +15,10 @@ impl<'a> Input<'a> {
 	pub(crate) fn new(core: &'a Core) -> Self { Self { core } }
 
 	fn icon(&self) -> Option<Icon> {
+		if !YAZI.input.show_icons {
+			return None;
+		}
+
 		let input = &self.core.input.main;
 
 		let is_dir = input.value().ends_with(CROSS_SEPARATOR);