refactor: make the offline Pester suite able to fail (#153) (#205)

Skip-IfMissing skipped a test whenever the cmdlet under test was absent
from the build, including the test asserting it exists. Every cmdlet
compiles into one assembly, so there is no partial-build case for it to
serve; all it did was hide a missing cmdlet. Delete the 37 copies and
every call site, and drop the residual conditional skips in the same
family (CmdExists probes, an attribute-presence skip in SdnCmdlets, a
lifecycle helper skipping on a cmdlet-name collision fixed long ago).

894 It blocks only reflected [Cmdlet] and [Parameter] attributes back at
the compiler: existence, CommandType -eq 'Cmdlet', Parameters.ContainsKey,
IsMandatory reflection, and per-file CmdletsToExport asserts for whichever
names an author remembered. Nothing reflected over the built assembly, so
a new cmdlet missing from the manifest shipped invisible. One data-driven
file replaces them: it diffs CmdletsToExport against the assembly's cmdlet
types in both directions and asserts the conventions reflection can see.

Behavioural tests are untouched: no-session errors, binding rejections,
ShouldProcess and -WhatIf, ConfirmImpact, ValidateSet and ValidateRange
values, parameter types, positions and pipeline binding.

The generated help covered 169 of 194 cmdlets. Regenerated with the repo's
own generate-help.ps1: 25 new markdown stubs, 13 existing docs picking up
parameters added in earlier waves, and a rebuilt MAML.

Co-authored-by: goodolclint-claude[bot] <323206664+goodolclint-claude[bot]@users.noreply.github.com>

docs/cmdlets/New-PveVm.md

@@ -15,9 +15,10 @@ schema: 2.0.0
 ```
 New-PveVm [-Node] <String> [-VmId <Int32>] [-Name <String>] [-Memory <Int32>] [-Cores <Int32>]
  [-Sockets <Int32>] [-CpuType <String>] [-Bios <String>] [-Machine <String>] [-DiskSize <String>]
- [-DiskStorage <String>] [-DiskFormat <String>] [-Network <String>] [-Bridge <String>] [-OsType <String>]
- [-Start] [-Wait] [-Session <PveSession>] [-ProgressAction <ActionPreference>] [-WhatIf] [-Confirm]
- [<CommonParameters>]
+ [-DiskStorage <String>] [-DiskFormat <String>] [-DiskBus <String>] [-ScsiHardware <String>] [-DiskIoThread]
+ [-DiskAio <String>] [-DiskSsd] [-DiskDiscard] [-DiskCache <String>] [-Network <String>] [-Bridge <String>]
+ [-OsType <String>] [-Start] [-Wait] [-Session <PveSession>] [-ProgressAction <ActionPreference>] [-WhatIf]
+ [-Confirm] [<CommonParameters>]
 ```
 
 ## DESCRIPTION
@@ -357,6 +358,111 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -DiskAio
+Async IO mode: native, threads, io_uring.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DiskBus
+Primary disk bus: virtio (default), scsi, sata, ide.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DiskCache
+Disk cache mode: none, writethrough, writeback, directsync, unsafe.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DiskDiscard
+Enable discard/TRIM passthrough (discard=on).
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DiskIoThread
+Enable a dedicated IO thread (iothread=1).
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -DiskSsd
+Mark the primary disk as SSD (ssd=1).
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -ScsiHardware
+SCSI controller model (e.g. virtio-scsi-single).
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### CommonParameters
 This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).