feat: Improved readability of session message exchange replays

src/repl/replay.rs

@@ -2,7 +2,7 @@ use anyhow::Result;
 
 use crate::client::{Message, MessageRole};
 use crate::config::{AppConfig, Session};
-use crate::utils::dimmed_text;
+use crate::utils::{dimmed_text, replay_label_text};
 
 pub fn snapshot(session: &Session) -> (Vec<Message>, Vec<Message>) {
     (
@@ -40,13 +40,14 @@ fn render_messages(app: &AppConfig, messages: &[Message]) -> Result<()> {
         match message.role {
             MessageRole::User => {
                 if let Some(text) = message.content.as_text() {
-                    println!("{}", dimmed_text("You:"));
+                    println!("{}", replay_label_text("You:"));
                     println!("{text}");
                     println!();
                 }
             }
             MessageRole::Assistant => {
                 if let Some(text) = message.content.as_text() {
+                    println!("{}", replay_label_text("Assistant:"));
                     app.print_markdown(text)?;
                     println!();
                 }

src/utils/mod.rs

@@ -75,6 +75,7 @@ static TOOL_DIM_COLOR: OnceLock<Color> = OnceLock::new();
 static TOOL_FN_COLOR: OnceLock<Color> = OnceLock::new();
 static TOOL_KEY_COLOR: OnceLock<Color> = OnceLock::new();
 static TOOL_WARN_COLOR: OnceLock<Color> = OnceLock::new();
+static REPLAY_LABEL_COLOR: OnceLock<Color> = OnceLock::new();
 
 pub fn init_tool_colors(theme: &Theme) {
     fn resolve(theme: &Theme, scope_str: &str) -> Option<Color> {
@@ -96,6 +97,16 @@ pub fn init_tool_colors(theme: &Theme) {
     if let Some(c) = resolve(theme, "string") {
         let _ = TOOL_WARN_COLOR.set(c);
     }
+    let replay_color = Scope::new("entity.name")
+        .ok()
+        .and_then(|scope| {
+            let style = Highlighter::new(theme).style_mod_for_stack(&[scope]);
+            style.foreground.or(theme.settings.foreground)
+        })
+        .map(|fg| Color::Rgb(fg.r, fg.g, fg.b));
+    if let Some(c) = replay_color {
+        let _ = REPLAY_LABEL_COLOR.set(c);
+    }
 }
 
 pub fn now() -> String {
@@ -236,6 +247,18 @@ pub fn cyan_bold_text(input: &str) -> String {
         .to_string()
 }
 
+pub fn replay_label_text(input: &str) -> String {
+    if *NO_COLOR {
+        return input.to_string();
+    }
+    let color = REPLAY_LABEL_COLOR.get().copied().unwrap_or(Color::Green);
+    nu_ansi_term::Style::new()
+        .fg(color)
+        .bold()
+        .paint(input)
+        .to_string()
+}
+
 pub fn magenta_text(input: &str) -> String {
     if *NO_COLOR {
         return input.to_string();