feat: Volume & virtiofs management

[Copilot]

Adds a Volumes page and full IPC stack for managing named volumes and bind-mounts in the active WSL Containers session, including virtiofs driver detection and in-use tracking.

Core (Porthole.Core)

• VolumeSummary model — name, driver, mount point, host path, size label, in-use flag
• IVolumeService — List/Create/Delete/PruneVolumesAsync
• ImageCatalogPipeModels — volume operation codes 40–43 (ListVolumes, CreateVolume, DeleteVolume, PruneVolumes); VolumeName added to request; Volumes added to response
• NamedPipeVolumeService — client implementation following existing pipe patterns
• VolumesViewModel — refresh, create, delete, prune relay commands; IsLoading, StatusMessage, VolumeCountLabel

Tray (Porthole.Tray)

• WslcBackendService — four new async methods backed by wslc volume subcommands; in-use detection walks Mounts[] from wslc inspect output per running container
• NamedPipeImageCatalogServer — dispatch cases for all four volume operations

App (Porthole.App)

• VolumesPage — toolbar (create / prune / refresh), status bar, columnar volume list (name + mount point, driver, size, in-use badge) with per-row delete + confirmation dialog
• DI registration and nav item wired up

Tests

Eight new xUnit facts covering refresh, create, empty-name guard, delete, prune, DriverDisplay default, and InUseLabel values.

[celloza]

Follow-up update pushed to this branch.

Included in this pass:

• merged named volumes and bind mounts into the Volumes page inventory
• surfaced mount telemetry for bind mounts and virtiofs/9P guidance
• blocked deletion of in-use named volumes and kept bind mounts non-destructive
• added Run Wizard host-folder picking and mount transport hints
• added copy mount string from the Volumes page for reuse in the Run Wizard or other tools
• updated README and added docs/volume-management.md
• added/updated tests for the new volume and mount behavior

Validation run:

• dotnet test tests/Porthole.Core.Tests/Porthole.Core.Tests.csproj -c Debug
• dotnet build Porthole.slnx -c Debug

Latest commit: bfb1380 feat: complete volume management workflow

[Copilot]

Pull request overview

Adds end-to-end volume + bind-mount visibility and management to Porthole (Core contracts + IPC + tray backend + WinUI page), and augments the Run Wizard with mount-transport guidance and a host-folder picker.

Changes:

• Introduces VolumeSummary, IVolumeService, and named-pipe operation codes/DTO updates for volume operations (40–43).
• Implements tray-side volume listing/create/delete/prune via wslc volume plus mount inspection for in-use/virtiofs telemetry.
• Adds a WinUI Volumes page and Run Wizard UX enhancements, with new xUnit coverage and documentation.

Reviewed changes

Copilot reviewed 18 out of 19 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tests/Porthole.Core.Tests/ViewModelTests.cs	Adds xUnit coverage for VolumesViewModel, VolumeSummary, and new Run Wizard telemetry formatting.
src/Porthole.Tray/Services/WslcBackendService.cs	Implements volume operations and mount inspection for bind mounts + in-use tracking.
src/Porthole.Tray/Services/NamedPipeImageCatalogServer.cs	Adds IPC dispatch cases for volume operations.
src/Porthole.Core/ViewModels/VolumesViewModel.cs	New MVVM viewmodel for volumes page (refresh/create/delete/prune + status/labels).
src/Porthole.Core/ViewModels/RunWizardViewModel.cs	Adds mount transport telemetry, review-summary annotation, and host mount prefill helper.
src/Porthole.Core/Services/NamedPipe/NamedPipeVolumeService.cs	Implements IVolumeService client over the existing image-catalog named pipe.
src/Porthole.Core/Services/NamedPipe/ImageCatalogPipeModels.cs	Adds volume operation codes and request/response fields (VolumeName, Volumes).
src/Porthole.Core/Services/IVolumeService.cs	Defines volume service contract for list/create/delete/prune.
src/Porthole.Core/Models/VolumeSummary.cs	Adds shared model for named volumes + bind mounts and UI-facing computed properties.
src/Porthole.App/Pages/VolumesPage.xaml.cs	Adds page initialization, delete confirmation dialog, and copy-to-clipboard action.
src/Porthole.App/Pages/VolumesPage.xaml	Adds WinUI volumes UI: toolbar, status bar, and volume list with per-row actions.
src/Porthole.App/Pages/RunWizardPage.xaml.cs	Adds host-folder picker integration to prefill bind mounts.
src/Porthole.App/Pages/RunWizardPage.xaml	Adds picker button and live mount-telemetry hint text to the wizard UI.
src/Porthole.App/MainWindow.xaml.cs	Wires navigation to the new Volumes page.
src/Porthole.App/MainWindow.xaml	Adds navigation item for Volumes.
src/Porthole.App/App.xaml.cs	Registers IVolumeService + VolumesViewModel in DI.
README.md	Updates feature list and adds Volume Management documentation section.
docs/volume-management.md	Adds detailed behavior/limitations doc for volumes, bind mounts, and wizard guidance.