feat(tui/greeting): time-based greeting placeholder for composer, welcome, and history cells

codex-rs/tui/src/bottom_pane/chat_composer.rs

@@ -41,7 +41,7 @@ use std::thread;
 use std::time::Duration;
 use std::time::Instant;
 
-const BASE_PLACEHOLDER_TEXT: &str = "Welcome to Code — What are we coding today? Type / to see commands";
+// Dynamic placeholder rendered when the composer is empty.
 /// If the pasted content exceeds this number of characters, replace it with a
 /// placeholder in the UI.
 const LARGE_PASTE_CHAR_THRESHOLD: usize = 1000;
@@ -1608,7 +1608,8 @@ impl WidgetRef for ChatComposer {
         StatefulWidgetRef::render_ref(&(&self.textarea), padded_textarea_rect, buf, &mut state);
         // Only show placeholder if there's no chat history AND no text typed
         if !self.typed_anything && self.textarea.text().is_empty() {
-            Line::from(BASE_PLACEHOLDER_TEXT)
+            let placeholder = crate::greeting::greeting_placeholder();
+            Line::from(placeholder)
                 .style(Style::default().dim())
                 .render_ref(padded_textarea_rect, buf);
         }

codex-rs/tui/src/greeting.rs

@@ -0,0 +1,20 @@
+use chrono::Local;
+use chrono::Timelike;
+
+/// Build a time-aware placeholder like
+/// "What can I code for you this morning?".
+pub(crate) fn greeting_placeholder() -> String {
+    let hour = Local::now().hour();
+    let when = if (5..=11).contains(&hour) {
+        "this morning"
+    } else if (12..=16).contains(&hour) {
+        "this afternoon"
+    } else if (17..=20).contains(&hour) {
+        "this evening"
+    } else {
+        // Late night and very early hours
+        "tonight"
+    };
+    format!("What can I code for you {when}?")
+}
+

codex-rs/tui/src/history_cell.rs

@@ -2453,7 +2453,7 @@ impl HistoryCell for AnimatedWelcomeCell {
         vec![
             Line::from(""),
             Line::from("Welcome to Code"),
-            Line::from("What can I code for you today?"),
+            Line::from(crate::greeting::greeting_placeholder()),
             Line::from(""),
         ]
     }

codex-rs/tui/src/lib.rs

@@ -69,6 +69,7 @@ mod user_approval_widget;
 mod height_manager;
 mod transcript_app;
 mod clipboard_paste;
+mod greeting;
 // Upstream introduced a standalone status indicator widget. Our fork renders
 // status within the composer title; keep the module private unless tests need it.
 mod status_indicator_widget;

codex-rs/tui/src/onboarding/welcome.rs

@@ -30,7 +30,7 @@ impl WidgetRef for &WelcomeWidget {
         if area.height > 1 {
             let line2 = Line::from(vec![
                 Span::raw("   "), // Indent to align with text after ">_ "
-                Span::raw("What can I code for you today?"),
+                Span::raw(crate::greeting::greeting_placeholder()),
             ]);
             let line2_area = Rect {
                 x: area.x,