Persist IM runtime config locally

backend/app/gateway/routers/channel_connections.py

@@ -10,6 +10,11 @@ from typing import Any
 from fastapi import APIRouter, HTTPException, Request, Response
 from pydantic import BaseModel, Field
 
+from app.channels.runtime_config_store import (
+    ChannelRuntimeConfigStore,
+    apply_runtime_connection_config,
+    merge_runtime_channel_configs,
+)
 from deerflow.config.channel_connections_config import ChannelConnectionsConfig
 from deerflow.persistence.channel_connections import ChannelConnectionRepository
 from deerflow.persistence.engine import get_session_factory
@@ -132,11 +137,22 @@ def _get_app_config():
     return get_app_config()
 
 
+def _get_runtime_config_store(request: Request) -> ChannelRuntimeConfigStore:
+    store = getattr(request.app.state, "channel_runtime_config_store", None)
+    if isinstance(store, ChannelRuntimeConfigStore):
+        return store
+    store = ChannelRuntimeConfigStore()
+    request.app.state.channel_runtime_config_store = store
+    return store
+
+
 def _get_channel_connections_config(request: Request) -> ChannelConnectionsConfig:
     config = getattr(request.app.state, "channel_connections_config", None)
-    if isinstance(config, ChannelConnectionsConfig):
-        return config
-    return _get_app_config().channel_connections
+    if not isinstance(config, ChannelConnectionsConfig):
+        config = _get_app_config().channel_connections
+    config = apply_runtime_connection_config(config, store=_get_runtime_config_store(request))
+    request.app.state.channel_connections_config = config
+    return config
 
 
 def _get_channels_config(request: Request) -> dict[str, Any]:
@@ -147,7 +163,14 @@ def _get_channels_config(request: Request) -> dict[str, Any]:
     app_config = _get_app_config()
     extra = app_config.model_extra or {}
     channels_config = extra.get("channels")
-    return dict(channels_config) if isinstance(channels_config, dict) else {}
+    result = dict(channels_config) if isinstance(channels_config, dict) else {}
+    merge_runtime_channel_configs(
+        result,
+        _get_channel_connections_config(request),
+        store=_get_runtime_config_store(request),
+    )
+    request.app.state.channels_config = result
+    return result
 
 
 def _get_repository(request: Request, config: ChannelConnectionsConfig) -> ChannelConnectionRepository:
@@ -436,6 +459,7 @@ async def configure_channel_provider_runtime(
         runtime_config[key] = values[key]
 
     if provider == "telegram":
+        runtime_config["bot_username"] = values["bot_username"]
         provider_config.bot_username = values["bot_username"]
         request.app.state.channel_connections_config = config
 
@@ -447,4 +471,6 @@ async def configure_channel_provider_runtime(
         display_name = _PROVIDER_META[provider]["display_name"]
         raise HTTPException(status_code=400, detail=f"Failed to start {display_name} channel. Check the values and try again.")
 
+    _get_runtime_config_store(request).set_provider_config(provider, runtime_config)
+
     return _provider_response(config, channels_config, provider, _PROVIDER_META[provider])