feat: Add webhook push functionality for bot message events (#1768)

* Initial plan

* Backend: Add webhook persistence model, service, API endpoints and message push functionality

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Frontend: Rename API Keys to API Integration, add webhook management UI with tabs

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Fix frontend linting issues and formatting

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* chore: perf ui in api integration dialog

* perf: webhook data pack structure

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>
Co-authored-by: Junyan Qin <rockchinq@gmail.com>

pkg/core/app.py

@@ -6,6 +6,7 @@ import traceback
 import os
 
 from ..platform import botmgr as im_mgr
+from ..platform.webhook_pusher import WebhookPusher
 from ..provider.session import sessionmgr as llm_session_mgr
 from ..provider.modelmgr import modelmgr as llm_model_mgr
 from ..provider.tools import toolmgr as llm_tool_mgr
@@ -24,6 +25,7 @@ from ..api.http.service import bot as bot_service
 from ..api.http.service import knowledge as knowledge_service
 from ..api.http.service import mcp as mcp_service
 from ..api.http.service import apikey as apikey_service
+from ..api.http.service import webhook as webhook_service
 from ..discover import engine as discover_engine
 from ..storage import mgr as storagemgr
 from ..utils import logcache
@@ -45,6 +47,8 @@ class Application:
 
     platform_mgr: im_mgr.PlatformManager = None
 
+    webhook_pusher: WebhookPusher = None
+
     cmd_mgr: cmdmgr.CommandManager = None
 
     sess_mgr: llm_session_mgr.SessionManager = None
@@ -125,6 +129,8 @@ class Application:
 
     apikey_service: apikey_service.ApiKeyService = None
 
+    webhook_service: webhook_service.WebhookService = None
+
     def __init__(self):
         pass