refactor: 重命名内部日志等级环境变量为 KNOT_LOG_LEVEL 以避免冲突

dotfiles

@@ -103,7 +103,7 @@ def main [
             | path expand
     )
     # 日志等级
-    $env.LOG_LEVEL = (
+    $env.KNOT_LOG_LEVEL = (
         if ($verbose) { 0 }
         else { if ($less) { 12 } else { 10 } }
     )

knotfiles/log.nu

@@ -17,8 +17,8 @@ export def main [
     level: int,
     s: string
 ] {
-    let log_level = if ('LOG_LEVEL' in $env) {
-        $env.LOG_LEVEL
+    let log_level = if ('KNOT_LOG_LEVEL' in $env) {
+        $env.KNOT_LOG_LEVEL
     } else {
         10
     }