Merge origin/milestone4/chart-component (UI overhaul + chart tests)

Integrates remote work: Phase 1-3 UI overhaul (Bootstrap 5,
ComponentCatalog, sidebar), chart data binding samples, and
Playwright integration tests for new sample pages.

Conflict: NavMenu.razor  took remote's ComponentCatalog-driven
dynamic nav (UI overhaul) over local's static TreeNode list.

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

Author: csharpfritz

.ai-team/agents/colossus/history.md

@@ -125,3 +125,20 @@ Fixed all 7 failing integration tests. 111/111 passing after fixes.
   - DataBinder sample uses `OnAfterRender(firstRender)` to call `DataBind()` on 4 Repeater instances — data only appears after first render, but NetworkIdle wait handles this.
   - ViewState sample button text "Click Me (ViewState)" distinguishes it from the "Click Me (Property)" button in section 3. Used `GetByRole(AriaRole.Button, new() { Name = "Click Me (ViewState)" })` for precise targeting.
   - Both pages include `<pre><code>` blocks with sample code — assertions use `page.ContentAsync()` for text presence rather than strict locators to avoid matching code samples vs rendered content where appropriate.
+### 2026-02-12: Enhanced Chart visual appearance tests
+
+- Added 5 stronger Chart tests in `InteractiveComponentTests.cs` to verify chart appearance:
+  - `Chart_RendersCanvas_WithDimensions` — verifies canvas has non-zero width/height via BoundingBox
+  - `Chart_AllTypes_HaveExpectedContainerDimensions` — Theory test verifying all 8 chart types have container dimensions matching ChartWidth/ChartHeight parameters (600x400 for most, 500x400 for Pie/Doughnut)
+  - `Chart_ChartJsLibrary_IsInitialized` — verifies Chart.js global is loaded and has at least one chart instance via `Chart.instances`
+  - `Chart_Line_MultipleSeries_RenderMultipleDatasets` — verifies Line chart's 2 series (NY/LA temps) produce 2 datasets via `Chart.instances[0].data.datasets.length`
+  - `Chart_AllTypes_CanvasHasRenderingContext` — Theory test verifying all 8 chart types have a 2D rendering context
+- Total Chart tests: 38 (8 smoke + 11 basic canvas + 19 enhanced visual)
+- Build: 0 errors, 0 warnings
+- Test patterns:
+  - Use `LocatorWaitForOptions { State = WaitForSelectorState.Visible }` instead of `Expect()` (class doesn't inherit from `PageTest`)
+  - Use `page.EvaluateAsync<T>` to query Chart.js internals (`Chart.instances`, dataset counts, etc.)
+  - Use `BoundingBoxAsync()` to verify element dimensions
+  - Allow ±10px tolerance on dimension checks for border/padding differences
+
+

.ai-team/agents/cyclops/history.md

@@ -67,6 +67,7 @@
 - **List controls missing common ListControl properties.** BulletedList, CheckBoxList, and DropDownList all lack DataTextFormatString, AppendDataBoundItems, CausesValidation, and ValidationGroup. These are inherited from ListControl in Web Forms.
 - **Calendar style sub-properties use CSS strings.** All 9 style sub-properties (DayStyle, TitleStyle, etc.) are implemented as CSS class strings instead of `TableItemStyle` objects. Functional but not API-compatible.
 - **HiddenField correctly uses BaseWebFormsComponent.** Matches Web Forms where HiddenField inherits Control (not WebControl), so no style properties needed.
+- **ChartSeries data binding fix:** `ToConfig()` now checks for `Items` + `YValueMembers` and extracts `DataPoint` objects via reflection. Uses `XValueMember` for X axis values and comma-separated `YValueMembers` for Y values. Falls back to manual `Points` collection when `Items` is null or `YValueMembers` is empty. Handles type conversion via `TryConvertToDouble()` for common numeric types.
 
 
  Team update (2026-02-23): AccessKey/ToolTip must be added to BaseStyledComponent  decided by Beast, Cyclops

.ai-team/agents/forge/history.md

@@ -154,3 +154,43 @@ Completed full API surface audit of 12 controls (9 Data + 3 Navigation) comparin
 - Library is effectively feature-complete for practical Web Forms migration
 
 📌 Team update (2026-02-11): Sprint 3 gate review — DetailsView APPROVED, PasswordRecovery APPROVED. 50/53 complete (94%). — decided by Forge
+### Chart Component Analysis (2026-02-13)
+
+Thorough review of `milestone4/chart-component` branch. Implementation is **substantially complete** for Phase 1 scope:
+
+**What's done:**
+- `Chart.razor/.cs`: BaseStyledComponent inheritance, ChartWidth/ChartHeight/Palette/CssClass, canvas rendering, JS interop lifecycle (create/update/destroy)
+- `ChartSeries.razor/.cs`: 13 properties, cascading parent registration
+- `ChartArea.razor/.cs`: AxisX/AxisY (Axis POCO class)
+- `ChartTitle.razor/.cs` & `ChartLegend.razor/.cs`: Text, Docking
+- `ChartConfigBuilder.cs`: Pure static config builder (testable without canvas), 8 chart types mapped
+- `ChartJsInterop.cs`: ES module loader for chart-interop.js
+- Enums: `SeriesChartType` (35 values matching Web Forms), `ChartPalette` (12 palettes), `Docking` (4 positions), `ChartDashStyle`
+- Supporting classes: `DataPoint` (XValue, YValues[], Label, Color, ToolTip), `Axis` (Title, Min, Max, Interval, IsLogarithmic)
+- wwwroot: `chart.min.js` (Chart.js bundled), `chart-interop.js` (ES module wrapper)
+- 140 unit tests passing — enums, DataPoint, Axis, ChartConfigBuilder output
+- Docs: Comprehensive `Chart.md` with migration guide, code examples, feature tables
+- Samples: 8 Blazor pages (Index/Column, Bar, Line, Area, Pie, Doughnut, Scatter, StackedColumn)
+- BeforeWebForms: PieChart.aspx, LineChart.aspx reference samples
+
+**Gaps identified:**
+1. **Data binding not implemented** — `XValueMember`, `YValueMembers`, `Items` parameters exist but `ToConfig()` ignores them. Docs show data-bound examples that will silently fail.
+2. **27 chart types unsupported** — throw `NotSupportedException`. Clearly documented.
+3. **No integration tests** — Colossus hasn't added Chart sample routes to smoke tests yet.
+4. **No per-point coloring** — `DataPoint.Color` not wired to Chart.js output.
+5. **No tooltips** — `DataPoint.ToolTip` and `ChartSeries.ToolTip` not wired.
+6. **`IsValueShownAsLabel`** — not implemented.
+7. **MarkerStyle** — parameter exists but not mapped.
+
+**Architecture assessment:**
+- Clean separation: Components → Config objects → ChartConfigBuilder → JSON → JS interop
+- Config builder is purely testable without browser context (140 tests)
+- ES module pattern for JS loading is correct
+- SSR/prerender handled gracefully (JSException caught)
+- Dispose pattern handles circuit disconnection
+
+**Risk assessment:**
+- Approach is sound — Chart.js is a solid choice
+- First JS interop in project is well-executed
+- Data binding gap is ship-blocking — docs promise it works
+- Remaining gaps are Phase 2/3 features, not blockers

.ai-team/agents/jubilee/history.md

@@ -67,3 +67,14 @@
 - **Navigation fixes applied:** NavMenu.razor Login Components reordered (Login before LoginName), DataBinder and ViewState added to Utility Features (alphabetical: DataBinder, ID Rendering, PageService, ViewState). ComponentList.razor fixed: HyperLink moved before Image in Editor Controls, ImageMap removed from Editor Controls and added to Navigation Controls (per team decision), Utility Features column added. mkdocs.yml: ImageMap removed from Editor Controls nav (already in Navigation Controls).
 - **Widget model reused:** DataBinder sample reuses `SharedSampleObjects.Models.Widget` with inline data (Laptop Stand, USB-C Hub, Mechanical Keyboard) for a product catalog demo.
 - **Build verified:** `dotnet build` passes with 0 compilation errors (Debug config). Release config has a known transient Nerdbank.GitVersioning file-copy issue unrelated to this work.
+### Chart Feature-Rich Sample Pages (2026-02-12)
+
+- **4 new sample pages added:** DataBinding, MultiSeries, Styling, ChartAreas — each demonstrating advanced Chart features.
+- **DataBinding.razor:** Shows Web Forms-style data binding with `Items`, `XValueMember`, and `YValueMembers` parameters. Uses business object records (`SalesData`, `TrafficData`) instead of manual `DataPoint` creation. Includes Web Forms vs Blazor comparison code snippets.
+- **MultiSeries.razor:** Demonstrates multiple series on one chart for comparisons — revenue channels (Online vs In-Store), regional sales (3 regions), and server performance metrics (CPU vs Memory). Shows the pattern of adding multiple `<ChartSeries>` children to one `<Chart>`.
+- **Styling.razor:** Showcases all 11 `ChartPalette` options with visual comparisons (BrightPastel, Berry, Chocolate, EarthTones, Excel, Fire, Grayscale, Light, Pastel, SeaGreen, SemiTransparent). Demonstrates custom colors via `WebColor` static fields (e.g., `WebColor.DodgerBlue`).
+- **ChartAreas.razor:** Explains the `Axis` configuration options (Title, Minimum, Maximum, Interval, IsLogarithmic). Shows logarithmic scale for exponential data and constrained Y-axis for focused ranges.
+- **Nav ordering pattern:** New samples added alphabetically within Chart node: Area, Bar, ChartAreas, Column, DataBinding, Doughnut, Line, MultiSeries, Pie, Scatter, StackedColumn, Styling.
+- **WebColor usage:** Use static fields like `WebColor.DodgerBlue` not `WebColor.FromName("...")` which doesn't exist.
+
+

.ai-team/agents/rogue/history.md

@@ -46,3 +46,8 @@
  Team update (2026-02-23): DetailsView/PasswordRecovery branch (sprint3) must be merged forward  decided by Forge
  Team update (2026-02-23): Validation Display property gap confirmed migration-blocking  decided by Rogue
  Team update (2026-02-23): ValidationSummary comma-split bug confirmed  immediate fix needed  decided by Rogue
+📌 ChartSeries Data Binding Tests: Added 12 new bUnit tests for ChartSeries data binding in `ChartTests.cs`. Tests verify: extracting X/Y values from Items using XValueMember/YValueMembers, numeric X values, decimal Y values, manual Points fallback when Items is null, empty Items producing empty chart, missing XValueMember (null XValue), missing YValueMembers (empty YValues), integer-to-double conversion, Items overriding manual Points, invalid property names handled gracefully. Created `ChartSeriesDataBindingHelper` test helper class that implements expected data binding logic — this documents the expected behavior that `ChartSeries.ToConfig()` must implement (Cyclops's fix). Total Chart tests: 152 (140 original + 12 data binding). — Rogue
+
+📌 Test pattern: Since `ChartSeries.ToConfig()` is `internal`, data binding tests use a helper class `ChartSeriesDataBindingHelper` that implements the expected extraction logic. This helper documents the contract: if Items is not null, extract DataPoints using reflection; if Items is null, fall back to manual Points; handle invalid property names by returning null/empty values. Cyclops should use this same logic in `ToConfig()`. — Rogue
+
+