fix: remediate scan-4 findings F058, F062, F063, F071, F072, F073, F074, F075

F058 (critical): Replace while(true) infinite-loop task polling with
TaskService.WaitForTask in 5 container snapshot and storage cmdlets.

F073+F047 (high): Migrate net9.0 → net10.0 across both source .csproj
files, build.yml, publish.yml, and test helper.

F071 (medium): Add Uri.EscapeDataString() to all inline URL path
segments in ~16 cmdlets that bypass service classes (D003).

F062+F063 (medium): Add ConfirmImpact.High to Restart-PveContainer
and Suspend-PveContainer (D006).

F075 (medium): Generate markdown help docs for 89 cmdlets that were
missing documentation (170 total, up from 81).

F072 (low): Remove unused System.Text.Json dependency from Core.csproj.
F074 (low): Raise publish smoke-test threshold from 60 to 150.
F065 (low): Add .github/ISSUE_TEMPLATE/config.yml.
F066 (low): Add CODEOWNERS.

Also fix _TestHelper.ps1 net9.0 → net10.0 framework reference.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/cmdlets/Stop-PveTask.md

@@ -0,0 +1,134 @@
+---
+external help file: PSProxmoxVE.dll-Help.xml
+Module Name: PSProxmoxVE
+online version:
+schema: 2.0.0
+---
+
+# Stop-PveTask
+
+## SYNOPSIS
+Stops a running task on a Proxmox VE node.
+
+## SYNTAX
+
+```
+Stop-PveTask [-Node] <String> [-Upid] <String> [-Session <PveSession>]
+ [-ProgressAction <ActionPreference>] [-WhatIf] [-Confirm] [<CommonParameters>]
+```
+
+## DESCRIPTION
+Cancels a running task identified by its UPID.
+
+## EXAMPLES
+
+### Example 1
+```powershell
+PS C:\> Stop-PveTask -Node pve1 -Upid 'UPID:pve1:...'
+```
+
+## PARAMETERS
+
+### -Node
+The PVE node name.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases: 
+
+Required: True
+Position: 0
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Upid
+The task UPID.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases: 
+
+Required: True
+Position: 1
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -Session
+{{ Fill Session Description }}
+
+```yaml
+Type: PveSession
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -WhatIf
+Shows what would happen if the cmdlet runs. The cmdlet is not run.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: wi
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Confirm
+Prompts you for confirmation before running the cmdlet.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: cf
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -ProgressAction
+{{ Fill ProgressAction Description }}
+
+```yaml
+Type: ActionPreference
+Parameter Sets: (All)
+Aliases: proga
+
+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).
+
+
+## INPUTS
+
+### System.String
+## OUTPUTS
+
+### System.Void
+## NOTES
+
+## RELATED LINKS