feat(tui): add config option to hide message source labels

Add [tui] config section with show_source_labels option (default: false).
When disabled, role prefixes like [user], [zeph], [bash] are hidden
since message colors already distinguish roles.

Closes #488

Author: bug-ops

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 - Duplicate `ToolEvent::Completed` emission in shell executor before filtering was applied (#480)
 
 ### Added
+- TUI `[tui]` config section with `show_source_labels` option to hide `[user]`/`[zeph]`/`[tool]` prefixes (#488)
 - Syntax-highlighted diff view for write/edit tool output in TUI (#451)
   - Diff rendering with green/red backgrounds for added/removed lines
   - Word-level change highlighting within modified lines

config/default.toml

@@ -320,3 +320,7 @@ embedding_seconds = 30
 a2a_seconds = 30
 # Maximum number of tool calls to execute in parallel
 max_parallel_tools = 8
+
+[tui]
+# Show role prefix labels ([user], [zeph], etc.) in chat messages
+show_source_labels = false

crates/zeph-core/src/config/types.rs

@@ -39,6 +39,8 @@ pub struct Config {
     pub daemon: DaemonConfig,
     #[serde(default)]
     pub scheduler: SchedulerConfig,
+    #[serde(default)]
+    pub tui: TuiConfig,
     #[serde(skip)]
     pub secrets: ResolvedSecrets,
 }
@@ -917,6 +919,12 @@ pub struct SchedulerConfig {
     pub tasks: Vec<ScheduledTaskConfig>,
 }
 
+#[derive(Debug, Clone, Copy, Default, Deserialize)]
+pub struct TuiConfig {
+    #[serde(default)]
+    pub show_source_labels: bool,
+}
+
 #[derive(Debug, Clone, Deserialize)]
 pub struct ScheduledTaskConfig {
     pub name: String,
@@ -990,6 +998,7 @@ impl Config {
             gateway: GatewayConfig::default(),
             daemon: DaemonConfig::default(),
             scheduler: SchedulerConfig::default(),
+            tui: TuiConfig::default(),
             secrets: ResolvedSecrets::default(),
         }
     }

crates/zeph-tui/src/app.rs

@@ -58,6 +58,7 @@ pub struct App {
     active_panel: Panel,
     tool_expanded: bool,
     compact_tools: bool,
+    show_source_labels: bool,
     status_label: Option<String>,
     throbber_state: throbber_widgets_tui::ThrobberState,
     confirm_state: Option<ConfirmState>,
@@ -89,6 +90,7 @@ impl App {
             active_panel: Panel::Chat,
             tool_expanded: false,
             compact_tools: false,
+            show_source_labels: false,
             status_label: None,
             throbber_state: throbber_widgets_tui::ThrobberState::default(),
             confirm_state: None,
@@ -198,6 +200,15 @@ impl App {
         self.compact_tools
     }
 
+    #[must_use]
+    pub fn show_source_labels(&self) -> bool {
+        self.show_source_labels
+    }
+
+    pub fn set_show_source_labels(&mut self, v: bool) {
+        self.show_source_labels = v;
+    }
+
     #[must_use]
     pub fn status_label(&self) -> Option<&str> {
         self.status_label.as_deref()

crates/zeph-tui/src/widgets/chat.rs

@@ -38,10 +38,11 @@ pub fn render(app: &mut App, frame: &mut Frame, area: Rect) -> usize {
 
         let msg_start = lines.len();
 
+        let show_labels = app.show_source_labels();
         if msg.role == MessageRole::Tool {
-            render_tool_message(msg, app, &theme, wrap_width, &mut lines);
+            render_tool_message(msg, app, &theme, wrap_width, show_labels, &mut lines);
         } else {
-            render_chat_message(msg, &theme, wrap_width, &mut lines);
+            render_chat_message(msg, &theme, wrap_width, show_labels, &mut lines);
         }
 
         for line in &mut lines[msg_start..] {
@@ -111,13 +112,23 @@ fn render_chat_message(
     msg: &crate::app::ChatMessage,
     theme: &Theme,
     wrap_width: usize,
+    show_labels: bool,
     lines: &mut Vec<Line<'static>>,
 ) {
-    let (prefix, base_style) = match msg.role {
-        MessageRole::User => ("[user] ", theme.user_message),
-        MessageRole::Assistant => ("[zeph] ", theme.assistant_message),
-        MessageRole::System => ("[system] ", theme.system_message),
-        MessageRole::Tool => unreachable!(),
+    let (prefix, base_style) = if show_labels {
+        match msg.role {
+            MessageRole::User => ("[user] ", theme.user_message),
+            MessageRole::Assistant => ("[zeph] ", theme.assistant_message),
+            MessageRole::System => ("[system] ", theme.system_message),
+            MessageRole::Tool => unreachable!(),
+        }
+    } else {
+        match msg.role {
+            MessageRole::User => ("", theme.user_message),
+            MessageRole::Assistant => ("", theme.assistant_message),
+            MessageRole::System => ("", theme.system_message),
+            MessageRole::Tool => unreachable!(),
+        }
     };
 
     let indent = " ".repeat(prefix.len());
@@ -219,10 +230,15 @@ fn render_tool_message(
     app: &App,
     theme: &Theme,
     wrap_width: usize,
+    show_labels: bool,
     lines: &mut Vec<Line<'static>>,
 ) {
-    let name = msg.tool_name.as_deref().unwrap_or("tool");
-    let prefix = format!("[{name}] ");
+    let prefix = if show_labels {
+        let name = msg.tool_name.as_deref().unwrap_or("tool");
+        format!("[{name}] ")
+    } else {
+        String::new()
+    };
     let content_lines: Vec<&str> = msg.content.lines().collect();
 
     // First line is always the command ($ ...)

src/main.rs

@@ -399,6 +399,7 @@ async fn main() -> anyhow::Result<()> {
         std::thread::spawn(move || reader.run());
 
         let mut tui_app = App::new(tui_handle.user_tx, tui_handle.agent_rx);
+        tui_app.set_show_source_labels(config.tui.show_source_labels);
 
         let history: Vec<(&str, &str)> = agent
             .context_messages()