add a clean all flag

Author: evanliu048

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

@@ -169,6 +169,30 @@ impl CaptureManager {
         Ok(())
     }
 
+    /// Delete the entire captures root (i.e., remove all session captures).
+    /// This re-creates the empty root directory after deletion.
+    pub async fn clean_all_sessions(&self, os: &Os) -> Result<()> {
+        let root = self
+            .shadow_repo_path
+            .parent()
+            .ok_or_else(|| eyre!("Could not determine captures root"))?;
+
+        // Safety guard: ensure last component looks like "cli-captures"
+        if root
+            .file_name()
+            .and_then(|s| s.to_str())
+            .map(|s| s.contains("captures"))
+            != Some(true)
+        {
+            bail!("Refusing to delete unexpected parent directory: {}", root.display());
+        }
+
+        println!("Deleting captures root: {}", root.display());
+        os.fs.remove_dir_all(root).await?;
+        os.fs.create_dir_all(root).await?; // recreate empty root
+        Ok(())
+    }
+
     pub fn diff(&self, tag1: &str, tag2: &str) -> Result<String> {
         let _ = self.get_capture(tag1)?;
         let _ = self.get_capture(tag2)?;

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

@@ -46,7 +46,11 @@ pub enum CaptureSubcommand {
     },
 
     /// Delete shadow repository
-    Clean,
+    Clean {
+        /// Delete the entire captures root (all sessions)
+        #[arg(long)]
+        all: bool,
+    },
 
     /// Display more information about a turn-level checkpoint
     Expand { tag: String },
@@ -150,15 +154,32 @@ impl CaptureSubcommand {
                     return Err(ChatError::Custom(format!("Could not display all captures: {e}").into()));
                 },
             },
-            Self::Clean => {
-                match manager.clean(os).await {
+            Self::Clean { all } => {
+                let res = if all {
+                    manager.clean_all_sessions(os).await
+                } else {
+                    manager.clean(os).await
+                };
+                match res {
                     Ok(()) => execute!(
                         session.stderr,
-                        style::Print("Deleted shadow repository.\n".blue().bold())
+                        style::Print(
+                            if all {
+                                "Deleted all session captures under the captures root.\n"
+                            } else {
+                                "Deleted shadow repository for this session.\n"
+                            }
+                            .blue()
+                            .bold()
+                        )
                     )?,
                     Err(e) => {
                         session.conversation.capture_manager = None;
-                        return Err(ChatError::Custom(format!("Could not delete shadow repo: {e}").into()));
+                        return Err(ChatError::Custom(if all {
+                            format!("Could not delete captures root: {e}").into()
+                        } else {
+                            format!("Could not delete shadow repo: {e}").into()
+                        }));
                     },
                 }
                 session.conversation.capture_manager = None;