docs(pwsh): scope the encoding claim, document the PATH probe and preamble limitation, and fix catalog requires lists

docs/config-catalog.md

@@ -996,8 +996,9 @@ export interface Config {
   graceMs?: number
   /**
    * Explicit pwsh executable. When omitted, well-known Windows install
-   * locations are probed first (PowerShell 7, then Windows PowerShell 5.1),
-   * falling back to a bare `pwsh` resolved through PATH.
+   * locations and PATH entries are probed in order (PowerShell 7 install,
+   * PATH entries such as the Microsoft Store install, then Windows
+   * PowerShell 5.1), falling back to a bare `pwsh` resolved through PATH.
    */
   pwshPath?: string
 }