feat(chat): add /changedir (/cd) slash command to change workdir mid-session

Allows changing the working directory without restarting the session:

  /changedir /path/to/project
  /cd ~/project/wezterm
  /cd          (goes to $HOME)

After changing directory, the user is prompted to run /code init
to reinitialize code intelligence for the new directory.

Author: sandikodev

crates/chat-cli/src/cli/chat/cli/changedir.rs

@@ -0,0 +1,53 @@
+use std::path::PathBuf;
+
+use clap::Args;
+use crossterm::{
+    execute,
+    style,
+};
+
+use crate::cli::chat::{
+    ChatError,
+    ChatSession,
+    ChatState,
+};
+use crate::theme::StyledText;
+
+#[derive(Debug, PartialEq, Args)]
+/// Arguments for the changedir command.
+pub struct ChangedirArgs {
+    /// The directory to switch to. Defaults to $HOME if not provided.
+    pub path: Option<PathBuf>,
+}
+
+impl ChangedirArgs {
+    pub async fn execute(self, session: &mut ChatSession) -> Result<ChatState, ChatError> {
+        let target = match self.path {
+            Some(p) => p,
+            None => dirs::home_dir().ok_or_else(|| ChatError::Custom("Could not determine home directory".into()))?,
+        };
+
+        let target = if target.is_relative() {
+            std::env::current_dir()
+                .map_err(|e| ChatError::Custom(e.to_string().into()))?
+                .join(&target)
+        } else {
+            target
+        };
+
+        std::env::set_current_dir(&target)
+            .map_err(|e| ChatError::Custom(format!("Failed to change directory: {e}").into()))?;
+
+        execute!(
+            session.stderr,
+            StyledText::success_fg(),
+            style::Print(format!("Working directory changed to: {}\n", target.display())),
+            style::Print("Run /code init to reinitialize code intelligence for this directory.\n"),
+            StyledText::reset(),
+        )?;
+
+        Ok(ChatState::PromptUser {
+            skip_printing_tools: true,
+        })
+    }
+}

crates/chat-cli/src/cli/chat/cli/mod.rs

@@ -1,5 +1,6 @@
 use crate::theme::StyledText;
 pub mod changelog;
+pub mod changedir;
 pub mod checkpoint;
 pub mod clear;
 pub mod compact;
@@ -23,6 +24,7 @@ pub mod tools;
 pub mod usage;
 
 use changelog::ChangelogArgs;
+use changedir::ChangedirArgs;
 use clap::Parser;
 use clear::ClearArgs;
 use compact::CompactArgs;
@@ -65,6 +67,9 @@ pub enum SlashCommand {
     Quit,
     /// Clear the conversation history
     Clear(ClearArgs),
+    /// Change the working directory for this session
+    #[command(name = "changedir", alias = "cd")]
+    Changedir(ChangedirArgs),
     /// Manage agents
     #[command(subcommand)]
     Agent(AgentSubcommand),
@@ -134,6 +139,7 @@ impl SlashCommand {
         match self {
             Self::Quit => Ok(ChatState::Exit),
             Self::Clear(args) => args.execute(session).await,
+            Self::Changedir(args) => args.execute(session).await,
             Self::Agent(subcommand) => subcommand.execute(os, session).await,
             Self::Profile => {
                 use crossterm::{
@@ -203,6 +209,7 @@ impl SlashCommand {
         match self {
             Self::Quit => "quit",
             Self::Clear(_) => "clear",
+            Self::Changedir(_) => "changedir",
             Self::Agent(_) => "agent",
             Self::Profile => "profile",
             Self::Context(_) => "context",