Sharepoint-Toolbox/.planning/phases/09-storage-visualization/VERIFICATION.md

phase, verified, status, score, re_verification

phase	verified	status	score	re_verification
09-storage-visualization	2026-04-07T15:00:00Z	passed	4/4 success criteria verified	false

Phase 9: Storage Visualization Verification Report

Phase Goal: The Storage Metrics tab displays an interactive chart of space consumption by file type, togglable between pie/donut and bar chart views Verified: 2026-04-07 Status: PASSED Re-verification: No -- initial verification

Goal Achievement

Observable Truths (Success Criteria)

#	Truth	Status	Evidence
1	A WPF charting library (LiveCharts2) is integrated as a NuGet dependency and renders correctly in the self-contained EXE build	VERIFIED	LiveChartsCore.SkiaSharpView.WPF 2.0.0-rc5.4 in csproj line 43; IncludeNativeLibrariesForSelfExtract=true in csproj line 16; dotnet build succeeds with 0 errors
2	After a storage scan completes, a chart appears in the Storage Metrics tab showing space broken down by file type	VERIFIED	StorageService.CollectFileTypeMetricsAsync (lines 68-159) enumerates files via CamlQuery with FileLeafRef/File_x0020_Size, groups by extension; StorageViewModel.RunOperationAsync calls it (line 218) and sets FileTypeMetrics (line 224); StorageView.xaml binds lvc:PieChart Series="{Binding PieChartSeries}" (line 170) and lvc:CartesianChart Series="{Binding BarChartSeries}" (line 190)
3	A toggle control switches the chart between pie/donut and bar chart representations without re-running the scan	VERIFIED	IsDonutChart property (line 41) with OnIsDonutChartChanged (line 298) calls UpdateChartSeries; RadioButtons in StorageView.xaml (lines 67-71) bind to IsDonutChart; PieChart visibility bound via MultiDataTrigger on IsDonutChart=True (lines 160-161); CartesianChart visibility on IsDonutChart=False (lines 180-181); toggle only regenerates series from in-memory FileTypeMetrics, no re-scan
4	The chart updates automatically whenever a new storage scan finishes, without requiring manual refresh	VERIFIED	RunOperationAsync (line 169) calls CollectStorageAsync then CollectFileTypeMetricsAsync (line 218), sets FileTypeMetrics (line 224) whose private setter calls UpdateChartSeries() (line 51); every scan execution path updates chart data automatically

Score: 4/4 success criteria verified

Required Artifacts

Artifact	Expected	Status	Details
SharepointToolbox/SharepointToolbox.csproj	LiveChartsCore.SkiaSharpView.WPF PackageReference + IncludeNativeLibrariesForSelfExtract	VERIFIED	Line 43: PackageReference version 2.0.0-rc5.4; Line 16: IncludeNativeLibrariesForSelfExtract=true
SharepointToolbox/Core/Models/FileTypeMetric.cs	Record with Extension, TotalSizeBytes, FileCount, DisplayLabel	VERIFIED	21-line record with computed DisplayLabel property
SharepointToolbox/Services/IStorageService.cs	CollectFileTypeMetricsAsync method signature	VERIFIED	Returns Task<IReadOnlyList<FileTypeMetric>> with ClientContext, IProgress, CancellationToken parameters
SharepointToolbox/Services/StorageService.cs	CollectFileTypeMetricsAsync implementation with CSOM CamlQuery	VERIFIED	Lines 68-159: paged CamlQuery with FileLeafRef/File_x0020_Size, extension grouping, sorted result
SharepointToolbox/ViewModels/Tabs/StorageViewModel.cs	Chart properties, toggle, UpdateChartSeries, auto-update from RunOperationAsync	VERIFIED	393 lines: FileTypeMetrics, PieChartSeries, BarChartSeries, BarXAxes, BarYAxes, IsDonutChart, UpdateChartSeries with top-10+Other logic
SharepointToolbox/Views/Tabs/StorageView.xaml	PieChart, CartesianChart controls, RadioButton toggle, data bindings	VERIFIED	199 lines: lvc:PieChart and lvc:CartesianChart with MultiDataTrigger visibility, RadioButtons for toggle
SharepointToolbox.Tests/ViewModels/StorageViewModelChartTests.cs	Unit tests for chart series, toggle, aggregation	VERIFIED	7 tests covering series creation, bar structure, donut toggle, top-10+Other, tenant switch, empty data
SharepointToolbox/Localization/Strings.resx	Chart localization keys (stor.chart.*)	VERIFIED	5 keys: stor.chart.title, stor.chart.donut, stor.chart.bar, stor.chart.toggle, stor.chart.nodata
SharepointToolbox/Localization/Strings.fr.resx	French chart localization keys	VERIFIED	All 5 keys present with French translations

Key Link Verification

From	To	Via	Status	Details
StorageViewModel.RunOperationAsync	StorageService.CollectFileTypeMetricsAsync	_storageService.CollectFileTypeMetricsAsync(ctx, progress, ct)	WIRED	Line 218 of ViewModel calls service; result assigned to FileTypeMetrics at line 224
FileTypeMetrics setter	UpdateChartSeries	Private setter calls UpdateChartSeries()	WIRED	Line 51: setter triggers chart rebuild
IsDonutChart toggle	UpdateChartSeries	OnIsDonutChartChanged partial method	WIRED	Line 298-301: property change handler calls UpdateChartSeries
StorageView.xaml PieChart	PieChartSeries	Series="{Binding PieChartSeries}"	WIRED	Line 170 in XAML
StorageView.xaml CartesianChart	BarChartSeries	Series="{Binding BarChartSeries}"	WIRED	Line 190 in XAML
StorageView.xaml RadioButtons	IsDonutChart	IsChecked="{Binding IsDonutChart}"	WIRED	Lines 68-71 in XAML
IStorageService.CollectFileTypeMetricsAsync	FileTypeMetric	Return type IReadOnlyList<FileTypeMetric>	WIRED	Interface line 25 returns FileTypeMetric list

Requirements Coverage

Requirement	Source Plan	Description	Status	Evidence
VIZZ-01	09-01, 09-04	Storage Metrics tab includes a graph showing space by file type	SATISFIED	LiveCharts2 integrated; PieChart and CartesianChart in StorageView.xaml; CollectFileTypeMetricsAsync provides data grouped by extension
VIZZ-02	09-02, 09-03, 09-04	User can toggle between pie/donut chart and bar chart views	SATISFIED	IsDonutChart property with RadioButton toggle; MultiDataTrigger visibility switching between PieChart and CartesianChart
VIZZ-03	09-03, 09-04	Graph updates when storage scan completes	SATISFIED	RunOperationAsync calls CollectFileTypeMetricsAsync then sets FileTypeMetrics, whose setter triggers UpdateChartSeries automatically

No orphaned requirements found. All 3 VIZZ requirements are covered by plans and satisfied by implementation.

Build and Test Verification

Check	Status	Details
dotnet build SharepointToolbox.csproj	PASSED	0 errors, 6 NuGet compatibility warnings (SkiaSharp/OpenTK on net10.0 -- informational only)
dotnet test --filter StorageViewModelChart	PASSED	7 passed, 0 failed, 0 skipped

Anti-Patterns Found

File	Line	Pattern	Severity	Impact
(none)	-	-	-	No anti-patterns detected

No TODO/FIXME/HACK markers, no empty implementations, no stub returns, no console.log-only handlers found in any phase 9 artifacts.

Human Verification Required

1. Chart renders visually after a real storage scan

Test: Connect to a SharePoint tenant, run a storage scan, observe the chart area below the DataGrid. Expected: A donut chart appears showing file types (e.g., DOCX, PDF, XLSX) with legend on the right. Each slice is labeled and has a tooltip showing size and file count. Why human: Chart rendering depends on SkiaSharp GPU/software rendering pipeline; cannot verify visual output programmatically.

2. Toggle between donut and bar chart

Test: After a scan completes and chart is visible, click the "Bar Chart" radio button in the Chart View group. Expected: The donut chart disappears and a bar chart appears with file types on the X axis (rotated -45 degrees) and formatted byte sizes on the Y axis. Toggling back to "Donut Chart" restores the donut view. Why human: Visual transition and layout correctness require human eye.

3. Self-contained EXE publish includes SkiaSharp native libraries

Test: Run dotnet publish -c Release -r win-x64 --self-contained true /p:PublishSingleFile=true and verify the resulting EXE launches and renders charts. Expected: Single EXE runs without missing DLL errors; charts render in the published build. Why human: Native library extraction and SkiaSharp initialization behavior varies by machine and can only be confirmed at runtime.

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Verified: 2026-04-07 Verifier: Claude (gsd-verifier)