chore: unify memory drop endpoints (#18134)

Unify all the memories drop behind a single implementation that drops
both the main memories and the extensions

codex-rs/cli/src/main.rs

@@ -49,6 +49,7 @@ use crate::mcp_cmd::McpCli;
 use crate::responses_cmd::ResponsesCommand;
 use crate::responses_cmd::run_responses_command;
 
+use codex_core::clear_memory_roots_contents;
 use codex_core::config::Config;
 use codex_core::config::ConfigOverrides;
 use codex_core::config::edit::ConfigEditsBuilder;
@@ -1282,27 +1283,17 @@ async fn run_debug_clear_memories_command(
         cleared_state_db = true;
     }
 
-    let memory_root = config.codex_home.join("memories");
-    let removed_memory_root = match tokio::fs::remove_dir_all(&memory_root).await {
-        Ok(()) => true,
-        Err(err) if err.kind() == std::io::ErrorKind::NotFound => false,
-        Err(err) => return Err(err.into()),
-    };
+    clear_memory_roots_contents(&config.codex_home).await?;
 
     let mut message = if cleared_state_db {
         format!("Cleared memory state from {}.", state_path.display())
     } else {
         format!("No state db found at {}.", state_path.display())
     };
-
-    if removed_memory_root {
-        message.push_str(&format!(" Removed {}.", memory_root.display()));
-    } else {
-        message.push_str(&format!(
-            " No memory directory found at {}.",
-            memory_root.display()
-        ));
-    }
+    message.push_str(&format!(
+        " Cleared memory directories under {}.",
+        config.codex_home.display()
+    ));
 
     println!("{message}");