feat: add /settitle to name the current session

Lets users give the active session a custom title so it shows up with a
meaningful name in the /resume picker instead of "(untitled)". The title
persists via SessionStore.setTitle and is included in the slash menu
(aliases: title, name).

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Co-Authored-By: Codebuff <noreply@codebuff.com>

Author: BOTCAHX

CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.0.10] - 2026-08-17
+
+### Added
+- `/settitle <title>` (slash menu: `title`/`name`): name the current session so it shows up with a proper title in `/resume` instead of `(untitled)`
+
 ## [3.0.9] - 2026-08-17
 
 ### Added

package.json

@@ -1,6 +1,6 @@
 {
   "name": "btch-cli",
-  "version": "3.0.9",
+  "version": "3.0.10",
   "description": "An open-source AI coding agent, built with Bun and OpenTUI.",
   "type": "module",
   "main": "dist/index.js",

src/agent/agent.ts

@@ -833,6 +833,12 @@ export class Agent {
     return this.session?.title || null;
   }
 
+  setSessionTitle(title: string): void {
+    if (!this.session || !this.sessionStore) return;
+    this.sessionStore.setTitle(this.session.id, title);
+    this.session = { ...this.session, title };
+  }
+
   getChatEntries(): ChatEntry[] {
     if (!this.session) return [];
     return buildChatEntries(this.session.id);

src/ui/app.tsx

@@ -339,6 +339,7 @@ const BUILTIN_TYPED_SLASH_COMMANDS = new Set([
   "/recap",
   "/recaps",
   "/resume",
+  "/settitle",
   "/remote-control",
   "/mcp",
   "/mcps",
@@ -2302,6 +2303,22 @@ export function App({ agent, startupConfig, initialMessage, onExit }: AppProps)
         openResumePicker();
         return true;
       }
+      if (c.startsWith("/settitle ") || c === "/settitle") {
+        const title = cmd.trim().slice("/settitle".length).trim();
+        if (!title) {
+          setMessages((prev) => [
+            ...prev,
+            buildAssistantEntry(
+              "Usage: /settitle <title>\nExample: /settitle Fix login bug — sets this session's title so it's easy to find in /resume",
+            ),
+          ]);
+          return true;
+        }
+        agent.setSessionTitle(title);
+        setSessionTitle(title);
+        setMessages((prev) => [...prev, buildAssistantEntry(`Session titled: ${title}`)]);
+        return true;
+      }
       if (c === "/wallet") {
         openWalletPicker();
         return true;
@@ -2490,6 +2507,10 @@ export function App({ agent, startupConfig, initialMessage, onExit }: AppProps)
           inputRef.current?.clear();
           inputRef.current?.insertText("/btw ");
           break;
+        case "settitle":
+          inputRef.current?.clear();
+          inputRef.current?.insertText("/settitle ");
+          break;
         case "update":
           setIsUpdating(true);
           setUpdateOutput(null);

src/ui/slash-menu.ts

@@ -18,6 +18,7 @@ export const SLASH_MENU_ITEMS: SlashMenuItem[] = [
   { id: "models", label: "models", description: "Select a model", aliases: ["model", "mode"] },
   { id: "recaps", label: "recaps", description: "Turn session recaps on/off", aliases: ["recap", "summary"] },
   { id: "resume", label: "resume", description: "Resume an earlier session", aliases: ["history", "sessions"] },
+  { id: "settitle", label: "settitle", description: "Set a title for this session", aliases: ["title", "name"] },
   { id: "new", label: "new session", description: "Start a new session" },
   { id: "commit-push", label: "commit & push", description: "Commit and push" },
   { id: "commit-pr", label: "commit & pr", description: "Commit and open PR" },