feat: add ArchiveConversation to ClientRequest (#3353)

Adds support for `ArchiveConversation` in the JSON-RPC server that takes
a `(ConversationId, PathBuf)` pair and:

- verifies the `ConversationId` corresponds to the rollout id at the
`PathBuf`
- if so, invokes
`ConversationManager.remove_conversation(ConversationId)`
- if the `CodexConversation` was in memory, send `Shutdown` and wait for
`ShutdownComplete` with a timeout
- moves the `.jsonl` file to `$CODEX_HOME/archived_sessions`

---------

Co-authored-by: Gabriel Peal <gabriel@openai.com>

codex-rs/protocol-ts/src/lib.rs

@@ -39,6 +39,7 @@ pub fn generate_ts(out_dir: &Path, prettier: Option<&Path>) -> Result<()> {
     codex_protocol::mcp_protocol::ServerNotification::export_all_to(out_dir)?;
     codex_protocol::mcp_protocol::ListConversationsResponse::export_all_to(out_dir)?;
     codex_protocol::mcp_protocol::ResumeConversationResponse::export_all_to(out_dir)?;
+    codex_protocol::mcp_protocol::ArchiveConversationResponse::export_all_to(out_dir)?;
 
     generate_index_ts(out_dir)?;