fix(smartshell): avoid triple shell nesting, improve WSL path filtering, and use chunked log buffer to reduce memory usage

ts/classes.shellenv.ts

@@ -28,6 +28,17 @@ export class ShellEnv {
     }
   }
 
+  /**
+   * Detect if running under Windows Subsystem for Linux
+   */
+  private static _isWSL(): boolean {
+    return !!(
+      process.env.WSL_DISTRO_NAME ||
+      process.env.WSLENV ||
+      (process.platform === 'linux' && process.env.PATH?.includes('/mnt/c/'))
+    );
+  }
+
   /**
    * imports path into the shell from env if available and returns it with
    */
@@ -39,18 +50,16 @@ export class ShellEnv {
       commandPaths = commandPaths.concat(process.env.SMARTSHELL_PATH.split(':'));
     }
 
-    // lets filter for unwanted paths
-    // Windows WSL
-    commandPaths = commandPaths.filter((commandPathArg) => {
-      const filterResult =
-        !commandPathArg.startsWith('/mnt/c/') &&
-        !commandPathArg.startsWith('Files/1E') &&
-        !commandPathArg.includes(' ');
-      if (!filterResult) {
-        // console.log(`${commandPathArg} will be filtered!`);
-      }
-      return filterResult;
-    });
+    // Only filter out WSL-specific paths when actually running under WSL
+    if (ShellEnv._isWSL()) {
+      commandPaths = commandPaths.filter((commandPathArg) => {
+        return (
+          !commandPathArg.startsWith('/mnt/c/') &&
+          !commandPathArg.startsWith('Files/1E') &&
+          !commandPathArg.includes(' ')
+        );
+      });
+    }
 
     commandResult = `PATH=${commandPaths.join(':')} && ${commandStringArg}`;
     return commandResult;
@@ -89,14 +98,12 @@ export class ShellEnv {
     }
     pathString += ` && `;
 
-    switch (this.executor) {
-      case 'bash':
-        commandResult = `bash -c '${pathString}${sourceString}${commandArg}'`;
-        break;
-      case 'sh':
-        commandResult = `${pathString}${sourceString}${commandArg}`;
-        break;
-    }
+    // For both bash and sh executors, build the command string directly.
+    // The shell nesting is handled by spawn() using the appropriate shell binary.
+    // Previously bash executor wrapped in `bash -c '...'` which caused triple
+    // shell nesting (Node spawn sh -> bash -c -> command). Now spawn() uses
+    // shell: '/bin/bash' directly, so we don't need the extra wrapping.
+    commandResult = `${pathString}${sourceString}${commandArg}`;
     commandResult = this._setPath(commandResult);
     return commandResult;
   }