feat(box): add box runtime package and lbp box CLI command

.gitignore

@@ -174,6 +174,7 @@ cython_debug/
 .pypirc
 
 /data/plugins/
+/data/box/
 /debug/
 uv.lock
 src/.DS_Store

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "langbot-plugin"
-version = "0.3.7"
+version = "0.4.0-beta.1"
 description = "This package contains the SDK, CLI for building plugins for LangBot, plus the runtime for hosting LangBot plugins"
 readme = "README.md"
 authors = [
@@ -9,7 +9,9 @@ authors = [
 requires-python = ">=3.10"
 dependencies = [
     "aiofiles>=24.1.0",
+    "aiohttp>=3.9.0",
     "dotenv>=0.9.9",
+    "e2b>=2.15",
     "httpx>=0.28.1",
     "jinja2>=3.1.6",
     "pip>=25.2",

src/langbot_plugin/box/__init__.py

@@ -0,0 +1,5 @@
+"""LangBot Box runtime package."""
+
+from .client import BoxRuntimeClient, ActionRPCBoxClient
+
+__all__ = ['BoxRuntimeClient', 'ActionRPCBoxClient']

src/langbot_plugin/box/actions.py

@@ -0,0 +1,34 @@
+"""Box-specific action types for the action RPC protocol."""
+
+from __future__ import annotations
+
+from langbot_plugin.entities.io.actions.enums import ActionType
+
+
+class LangBotToBoxAction(ActionType):
+    """Actions sent from LangBot to the Box runtime."""
+
+    INIT = "box_init"  # Initialize with full box config (highest priority)
+    HEALTH = "box_health"
+    STATUS = "box_status"
+    EXEC = "box_exec"
+    CREATE_SESSION = "box_create_session"
+    GET_SESSION = "box_get_session"
+    GET_SESSIONS = "box_get_sessions"
+    DELETE_SESSION = "box_delete_session"
+    START_MANAGED_PROCESS = "box_start_managed_process"
+    GET_MANAGED_PROCESS = "box_get_managed_process"
+    STOP_MANAGED_PROCESS = "box_stop_managed_process"
+    GET_BACKEND_INFO = "box_get_backend_info"
+    LIST_SKILLS = "box_list_skills"
+    GET_SKILL = "box_get_skill"
+    CREATE_SKILL = "box_create_skill"
+    UPDATE_SKILL = "box_update_skill"
+    DELETE_SKILL = "box_delete_skill"
+    SCAN_SKILL_DIRECTORY = "box_scan_skill_directory"
+    LIST_SKILL_FILES = "box_list_skill_files"
+    READ_SKILL_FILE = "box_read_skill_file"
+    WRITE_SKILL_FILE = "box_write_skill_file"
+    PREVIEW_SKILL_ZIP = "box_preview_skill_zip"
+    INSTALL_SKILL_ZIP = "box_install_skill_zip"
+    SHUTDOWN = "box_shutdown"