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Verify FlatRedBall (FRB1) still compiles after editing Gum source it shares. Triggers: changes under GumCommon/ or MonoGameGum/Forms/, projitems sync, the FRB compile constant, CS0246/CS0103 from FRB. Only when a FlatRedBall checkout sits beside the Gum repo.

Add Forms dialog's tool-content theme system (Templates/FormsThemes/*). Triggers: FormsFileService, FormsThemeImporter, AddFormsViewModel, ThemeRequirements, theme.txt, Bubblegum/Hazard theme content, ThemeRecolorHelper, porting a new Forms theme.

Gum dialog/popup systems. Triggers: DialogService, DialogWindow, DeleteOptionsWindow, dialog scrolling/layout, adding new dialog types, ShowMessage/ShowYesNoMessage, mocking IDialogService in unit tests.

Gum error detection/display. Triggers: Errors tab, '!' icons in tree view, ErrorChecker, ErrorViewModel, IErrorChecker, AllErrorsViewModel, MainErrorsPlugin, RequestErrorRefreshMessage, adding new error checks.

Gum FileWatch system. Triggers: external file change detection, IgnoreNextChangeUntil, FileWatchManager, FileWatchLogic, FileChangeReactionLogic, reloading assets/elements when files change on disk.

Gum bitmap font generation — tool converts font properties into .fnt/.png via bmfont.exe or KernSmith. Triggers: BmfcSave, HeadlessFontGenerationService, FontManager, FontFileGeneratorSelector, KernSmithFileGenerator, BmfcTemplate.bmfc, texture size…

Gum tool plugin system, including visualization plugins (EditorTabPlugin.Core/EditorTabPlugin_XNA, TextureCoordinatePlugin.Core). Triggers: plugin registration, PluginBase, PriorityPlugin, PluginManager, plugin events, finding which internal plugin owns a…

Gum Variables tab and DataUiGrid. Triggers: Variables tab, DataUiGrid control, MemberCategory, InstanceMember, category population, property grid refresh, expansion state persistence.

FlatRedBallService.Performance — opt-in rolling FPS/timing/collision stats; StartupProfiler for one-time boot/load timing. Triggers: PerformanceMonitor, GenerateReport, FPS, frame time, DeepCollisionCount, StartupProfiler, ProfileStartup, "why is my game…

Adding a KNI BlazorGL (Blazor WebAssembly / browser) head to a FlatRedBall2 desktop project. Use when the user mentions web deployment, browser/WASM/itch.io targets, KNI, or asks to add web support to an existing game, or hits a browser-only failure…

Content hot-reload in FlatRedBall2. Use when watching content files (JSON configs, PNGs, TMX maps, etc.) for changes during development and reloading them without killing the game. Covers Screen.WatchContentDirectory, source/output mapping, debouncing, and…

Gum Integration in FlatRedBall2. Use when working with UI, HUD, menus, buttons, labels, text display, StackPanel, Panel, layout, Gum Forms controls, Add, AddOverlay, screen-space vs world-space UI, blurry or low-res text, FontSize, text opacity/alpha, or any…

Working with Shapes in FlatRedBall2. Use when working with AARect, Circle, Polygon, TileShapes, shape creation, visibility, color, IsFilled, OutlineThickness, or visual properties of shapes. Also covers SolidSides for one-way platforms and tile grids. Trigger…

Minigame orchestrator for FlatRedBall2. Designs a small retro game (user-provided or random), delegates implementation to a fresh sub-agent, builds it, and reports friction. Use when the user says 'make a random game', 'use the orchestrator', or similar.

Sample Project Setup for FlatRedBall2. Use when creating a new sample project, setting up a .csproj or .slnx, or wiring the KNI content pipeline. Covers the checklist for new sample projects.

Audio in FlatRedBall2. Use when working with sound effects, background music, AudioManager, loading Song or SoundEffect, volume control, or collision sound triggers.

The .achx/.achj animation file formats and their save/runtime split. Triggers: .achx, .achj, AnimationChainListSave, AnimationChainSave, AnimationFrameSave, ToAnimationChainList, FromXElement, ParseJson.

Use when working on Glue's Gum code generation — adding/removing/version-gating generated properties on Gum standard runtime types (NineSlice, Text, Container, Sprite, etc.), or debugging "why is/isn't this Gum variable being generated."

FRB Gum Forms codegen and how Forms controls take cursor input. Triggers: XxxForms.Generated.cs, FormsClassCodeGenerator, UserControl, Cursor.WindowOver, clicks eaten by Gum UI.

Glue↔running-game live edit (drag/resize/tweak a live game, changes flow back to Glue). Triggers: GlueControl, GameConnectionManager, CommandReceiver, VariableAssignmentLogic, EmbeddedCodeManager, ActivityEditMode, edit mode.

Testing GlueControl's embedded runtime (CommandReceiver, GlueControlManager) against a real running game process. Triggers: LiveGameProcess, live edit runtime behavior, ScreenManager.Start vs MoveToScreen, testing Embedded/*.cs, Category=LiveGame.

What "Link Game to FRB Source" actually swaps in a game project's references, vs. the plain checker. Triggers: IsFrbSourceLinked, AddSourceManager, FrbSourcePlugin, GumCore.DesktopGlNet6.dll, stale prebuilt Gum/FRB binaries, Libraries\DesktopGl.

Answering Discord/GitHub user questions about FlatRedBall — search skills→docs→code, cite the docs URL, propose a doc/API fix with confidence, gate edits on approval. Triggers: pasted user question, "how do I", GitHub issue triage, "answer this person".

Glue's "New Object" add pipeline and the tree's inline-rename mechanism. Triggers: AddObjectViewModel, ShowAddNewObjectDialog, NewObjectTypeSelectionControlWpf, IsTypePredetermined, NodeViewModel.IsEditing, RenameNamedObjectSave.

Creates and updates skill files (.claude/skills/*/SKILL.md). Triggers: creating/updating a skill, documenting a subsystem for agent context.

KernSmith runtime font generation for Gum text. Triggers: BmFont, KernSmithFontCreator, StbTrueTypeRasterizer, DynamicFonts example, KernSmithPlugin.