feat(cli): add interactive chat REPL mode for native muse CLI

bin/muse

@@ -26,6 +26,7 @@ show_usage() {
     done
     echo ""
     echo "Common commands:"
+    echo "  chat [--thread <id>]    Launch interactive conversational shell / REPL"
     echo "  status                  Check agent status, sessions, and unread"
     echo "  threads                 List active threads and sidechats"
     echo "  history --thread <id>   View message history"
@@ -96,6 +97,12 @@ if [[ ${#POSITIONAL[@]} -eq 0 ]]; then
     POSITIONAL=("status")
 fi
 
+# If subcommand is 'chat', launch interactive chat REPL
+if [[ "${POSITIONAL[0]}" == "chat" ]]; then
+    shift_args=("${POSITIONAL[@]:1}")
+    exec python3 "$NETVM_BIN/muse-chat-repl.py" "$ACCOUNT" "${shift_args[@]}"
+fi
+
 # Execute command; if auth fails and auto-cdp fails, offer interactive OTP sign-in if running interactively
 set +e
 "$NETVM_BIN/muse-cli-node" "$ACCOUNT" "${POSITIONAL[@]}"