feat(P25-1/P25-5/P26-1/P26-3/P24-1/P29-4): 落地内部OA够用版后端与试运行能力

关联 Issue: P25-1, P25-2, P25-3, P25-4, P25-5, P26-1, P26-3, P24-1, P24-2, P29-1, P29-2, P29-3, P29-4

server/scripts/lib/load-env-defaults.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+
+load_env_defaults() {
+  local env_file="${1:-.env}"
+
+  if [[ ! -f "$env_file" ]]; then
+    return 0
+  fi
+
+  while IFS= read -r line || [[ -n "$line" ]]; do
+    if [[ "$line" =~ ^[[:space:]]*$ ]] || [[ "$line" =~ ^[[:space:]]*# ]]; then
+      continue
+    fi
+
+    if [[ "$line" != *=* ]]; then
+      continue
+    fi
+
+    local key="${line%%=*}"
+    local value="${line#*=}"
+
+    key="${key#"${key%%[![:space:]]*}"}"
+    key="${key%"${key##*[![:space:]]}"}"
+    value="${value#"${value%%[![:space:]]*}"}"
+    value="${value%"${value##*[![:space:]]}"}"
+
+    if [[ ! "$key" =~ ^[A-Za-z_][A-Za-z0-9_]*$ ]]; then
+      continue
+    fi
+
+    if [[ -n "${!key+x}" ]]; then
+      continue
+    fi
+
+    if [[ "$value" =~ ^\"(.*)\"$ ]]; then
+      value="${BASH_REMATCH[1]}"
+    elif [[ "$value" =~ ^\'(.*)\'$ ]]; then
+      value="${BASH_REMATCH[1]}"
+    fi
+
+    export "$key=$value"
+  done < "$env_file"
+}