Fix QlPort and QlGrpcPort environment variables ignored in host network mode and pm2 reload (#2825)

* Initial plan

* Fix host mode port configuration by using QlPort environment variable

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Fix GRPC_PORT conflict in host network mode

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Ensure BACK_PORT and GRPC_PORT survive pm2 reload with --update-env

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Move env.sh sourcing after fix_config to preserve more environment variables

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Refactor: Extract export_ql_envs function and move env.sh sourcing earlier

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

* Extract load_ql_envs function and reorder initialization in docker-entrypoint.sh and update.sh

Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: whyour <22700758+whyour@users.noreply.github.com>

docker/docker-entrypoint.sh

@@ -2,7 +2,13 @@
 
 dir_shell=/ql/shell
 . $dir_shell/share.sh
-. $dir_shell/env.sh
+
+export_ql_envs() {
+  # Export BACK_PORT from QlPort for backend server to use
+  export BACK_PORT="${ql_port}"
+  # Export GRPC_PORT from QlGrpcPort for gRPC server to use
+  export GRPC_PORT="${ql_grpc_port}"
+}
 
 log_with_style() {
   local level="$1"
@@ -13,6 +19,9 @@ log_with_style() {
 }
 
 log_with_style "INFO" "🚀 1. 检测配置文件..."
+load_ql_envs
+export_ql_envs
+. $dir_shell/env.sh
 import_config "$@"
 fix_config