iris: load application-owned fonts

app/src/ui/tool.rs

@@ -1,6 +1,7 @@
 use crate::client::text_cap::{VERBATIM_BYTES, VERBATIM_LINES, cut, show_all_label};
 use crate::client::tool_summary::{ToolInput, parse_tool_input};
 use crate::client::transcript_fold::{ToolState, TranscriptItem};
+use crate::ui::icon;
 use crate::ui::markdown::highlight_into;
 use crate::ui::tap::{hold_edge, on_tap};
 use crate::ui::theme::Theme;