feat(coding-agent): show session name in terminal title and footer (#876)

* ⏺ feat(tui): show session name in terminal title and footer

- Add updateTerminalTitle() method that sets terminal title to
"π - session-name - dirname" (or "π - dirname" if no name)
- Update title when session name changes via /name or extension API
- Display session name in footer after git branch with bullet separator

* chore: update CHANGELOG

packages/coding-agent/src/modes/interactive/components/footer.ts

@@ -109,6 +109,12 @@ export class FooterComponent implements Component {
 			pwd = `${pwd} (${branch})`;
 		}
 
+		// Add session name if set
+		const sessionName = this.session.sessionManager.getSessionName();
+		if (sessionName) {
+			pwd = `${pwd} • ${sessionName}`;
+		}
+
 		// Truncate path if too long to fit width
 		if (pwd.length > width) {
 			const half = Math.floor(width / 2) - 2;

packages/coding-agent/src/modes/interactive/interactive-mode.ts

@@ -447,8 +447,7 @@ export class InteractiveMode {
 		this.isInitialized = true;
 
 		// Set terminal title
-		const cwdBasename = path.basename(process.cwd());
-		this.ui.terminal.setTitle(`pi - ${cwdBasename}`);
+		this.updateTerminalTitle();
 
 		// Initialize extensions with TUI-based UI context
 		await this.initExtensions();
@@ -469,6 +468,19 @@ export class InteractiveMode {
 		});
 	}
 
+	/**
+	 * Update terminal title with session name and cwd.
+	 */
+	private updateTerminalTitle(): void {
+		const cwdBasename = path.basename(process.cwd());
+		const sessionName = this.sessionManager.getSessionName();
+		if (sessionName) {
+			this.ui.terminal.setTitle(`π - ${sessionName} - ${cwdBasename}`);
+		} else {
+			this.ui.terminal.setTitle(`π - ${cwdBasename}`);
+		}
+	}
+
 	/**
 	 * Run the interactive mode. This is the main entry point.
 	 * Initializes the UI, shows warnings, processes initial messages, and starts the interactive loop.
@@ -678,6 +690,7 @@ export class InteractiveMode {
 				},
 				setSessionName: (name) => {
 					this.sessionManager.appendSessionInfo(name);
+					this.updateTerminalTitle();
 				},
 				getSessionName: () => {
 					return this.sessionManager.getSessionName();
@@ -3391,6 +3404,7 @@ export class InteractiveMode {
 		}
 
 		this.sessionManager.appendSessionInfo(name);
+		this.updateTerminalTitle();
 		this.chatContainer.addChild(new Spacer(1));
 		this.chatContainer.addChild(new Text(theme.fg("dim", `Session name set: ${name}`), 1, 0));
 		this.ui.requestRender();