chore(memory-bank): record the first part of step 1 of Phase 2

Record the new tests, the two defects that they found, and the privilege
handling in Dispose since 5.0.0-rc6.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: AI Assistant <ai@example.com>

.memory-bank/activeContext.md

@@ -46,14 +46,22 @@ in favor of WindowsAccessControl (Decision 18).
   `AUTHZ_ACCESS_REPLY.Error`, and its buffers aren't initialized. #110
   lists seven test follow-ups.
 - #34: no reply from the tester by 06:44 UTC on 2026-10-08.
+- Phase 2, step 1, first part (2026-10-08, commits `82969ba` to
+  `ff74100`): 34 new tests for `Set-NTFSOwner`, `Test-Path2`, and
+  `Get-DiskSpace`, and two defects found and fixed test-first. Every
+  cmdlet that enables privileges left the Backup, Restore, Take Ownership,
+  and Security privileges enabled in the session when a later command or a
+  terminating error stopped the pipeline; `Test-Path2` stopped with
+  "Illegal characters in path" in Windows PowerShell for a path such as
+  `C:\a|b`. The suite (533 tests) passes elevated in both editions.
 
 ## Next step
 
 Phase 2, one step at a time, each with evidence before the next:
 
-1. Tests for the cmdlets without tests of their own: `Test-Path2`,
+1. Tests for the cmdlets without tests of their own: done for
-   `Get-DiskSpace`, `Set-NTFSOwner`, the link cmdlets,
+   `Set-NTFSOwner`, `Test-Path2`, and `Get-DiskSpace`; open for the link
-   `Get-NTFSOrphanedAudit`, and `Get-NTFSSimpleAccess`.
+   cmdlets, `Get-NTFSOrphanedAudit`, and `Get-NTFSSimpleAccess`.
 2. The other parameter sets and error paths, such as the
    `-SecurityDescriptor` sets of the inheritance cmdlets and of
    `Clear-NTFSAccess`.

.memory-bank/systemPatterns.md

@@ -35,7 +35,11 @@ NTFSSecurity.dll ── cmdlets ──> Security2.dll (FileSystemAccessRule2,
   ownership and restores the previous owner on every exit path.
 - `BaseCmdletWithPrivControl` enables Backup, Restore, TakeOwnership, and
   Security in `BeginProcessing` when `PrivateData.EnablePrivileges` is
-  `$true`, and disables the ones it enabled in `EndProcessing`.
+  `$true`, and disables the ones it enabled in `EndProcessing` and, since
+  5.0.0-rc6, in `Dispose`: PowerShell skips `EndProcessing` when a later
+  command, such as `Select-Object -First`, or a terminating error stops the
+  pipeline, but calls `Dispose`. `Enable-Privileges` keeps them
+  (`KeepEnabledPrivileges`).
 - `PrivateData` switches: `EnablePrivileges`, `GetInheritedFrom`,
   `GetFileSystemModeProperty`, `IdentifyHardLinks`, `ShowAccountSid`.
 - Cmdlets accept `-Path` (alias `FullName`) or `-SecurityDescriptor`; the