feat: added /summarize command (#667)

* added /summarize command

* patch and test

memgpt/main.py

@@ -21,6 +21,7 @@
 import memgpt.agent as agent
 import memgpt.system as system
 import memgpt.constants as constants
+import memgpt.errors as errors
 from memgpt.cli.cli import run, attach, version, server, open_folder, quickstart
 from memgpt.cli.cli_config import configure, list, add
 from memgpt.cli.cli_load import app as load_app
@@ -205,6 +206,22 @@ def run_agent_loop(memgpt_agent, first, no_verify=False, cfg=None, strip_ui=Fals
                             break
                     continue
 
+                elif user_input.lower() == "/summarize":
+                    try:
+                        memgpt_agent.summarize_messages_inplace()
+                        typer.secho(
+                            f"/summarize succeeded",
+                            fg=typer.colors.GREEN,
+                            bold=True,
+                        )
+                    except errors.LLMError as e:
+                        typer.secho(
+                            f"/summarize failed:\n{e}",
+                            fg=typer.colors.RED,
+                            bold=True,
+                        )
+                    continue
+
                 # No skip options
                 elif user_input.lower() == "/wipe":
                     memgpt_agent = agent.Agent(interface)