cookbook-add-recipe

# Cookbook Recipe From IPlottable If no plottable is named, ask before editing. Paths: plottables in `src/ScottPlot5/ScottPlot5/Plottables`; recipes in `src/ScottPlot5/ScottPlot5 Cookbook/Recipes/PlotTypes`. Fast path: 1. Read the target plottable public API. 2. Search existing PlotTypes recipes and read adjacent style. 3. Add a nested `RecipeBase` to an existing category, or create a matching `ICategory` file in `Recipes/PlotTypes`. 4. Keep code minimal, deterministic, and documentation-friendly. 5. Run focused cookbook tests. ```sh rg "class .*:.*IPlottable|class TARGET" src/ScottPlot5/ScottPlot5 rg "TARGET|CategoryName =>" "src/ScottPlot5/ScottPlot5 Cookbook/Recipes/PlotTypes" ``` New category basics: namespace `ScottPlotCookbook.Recipes.PlotTypes`, implement `ICategory`, `Chapter => Chapter.PlotTypes`, one quickstart recipe unless the requested behavior needs something else. Prefer `myPlot.Add.*()` APIs and deterministic `Generate` data. Avoid unnecessary titles, labels, legends, limits, styling, comments, refactors, or cleanup. Validation: ```sh dotnet test "src/ScottPlot5/ScottPlot5 Cookbook/ScottPlot Cookbook.csproj" --filter "FullyQualifiedName~RecipeTests" ``` If the new recipe must render during validation, run the cookbook project without the filter. Report the command and result.