SKILL.md
macos-menubar-tuist-app
Build and maintain macOS menubar apps with a Tuist-first workflow and stable launch scripts. Preserve strict architecture boundaries so networking, state, and UI remain testable and predictable.
Core Rules
- Keep the app menubar-only unless explicitly told otherwise. Use
LSUIElement = true by default.
- Keep transport and decoding logic outside views. Do not call networking from SwiftUI view bodies.
- Keep state transitions in a store layer (
@Observable or equivalent), not in row/view presentation code.
- Keep model decoding resilient to API drift: optional fields, safe fallbacks, and defensive parsing.
- Treat Tuist manifests as the source of truth. Do not rely on hand-edited generated Xcode artifacts.
- Prefer script-based launch for local iteration when
tuist run is unreliable for macOS target/device resolution.
- Prefer
tuist xcodebuild build over raw xcodebuild in local run scripts when building generated projects.
Expected File Shape
Use this placement by default:
Project.swift: app target, settings, resources, Info.plist keys
Sources/Model.swift: API/domain models and decoding
Sources/Client.swift: requests, response mapping, transport concerns
Sources/Store.swift: observable state, refresh policy, filtering, caching
Sources/MenuView*.swift: menu composition and top-level UI state
Sources/RowView*.swift: row rendering and lightweight interactions
run-menubar.sh: canonical local restart/build/launch path
stop-menubar.sh: explicit stop helper when needed
Workflow
- Confirm Tuist ownership
- Verify
Tuist.swift and Project.swift (or workspace manifests) exist.
- Read existing run scripts before changing launch behavior.
- Probe backend behavior before coding assumptions
- Use
curl to verify endpoint shape, auth requirements, and pagination behavior.
- If endpoint ignores
limit/page, implement full-list handling with local trimming in the store.
- Implement layers from bottom to top
- Define/adjust models first.
- Add or update client request/decoding logic.
- Update store refresh, filtering, and cache policy.
- Wire views last.
- Keep app wiring minimal
- Keep app entry focused on scene/menu wiring and dependency injection.
- Avoid embedding business logic in
App or menu scene declarations.
- Standardize launch ergonomics
- Ensure run script restarts an existing instance before relaunching.
- Ensure run script does not open Xcode as a side effect.
- Use
tuist generate --no-open when generation is required.
- When the run script builds the generated project, prefer
TUISTSKIPUPDATE_CHECK=1 tuist xcodebuild build ... instead of invoking raw xcodebuild directly.
Validation Matrix
Run validations after edits:
TUIST_SKIP_UPDATE_CHECK=1 tuist xcodebuild build -scheme <TargetName> -configuration Debug
If launch workflow changed:
./run-menubar.sh
If shell scripts changed:
bash -n run-menubar.sh
bash -n stop-menubar.sh
./run-menubar.sh
Failure Patterns and Fix Direction
tuist run cannot resolve the macOS destination:
Use run/stop scripts as canonical local run path.
- Menu UI is laggy or inconsistent after refresh:
Move derived state and filtering into the store; keep views render-only.
- API payload changes break decode:
Relax model decoding with optional fields and defaults, then surface missing data safely in UI.
- Feature asks for quick UI patch:
Trace root cause in model/client/store before changing row/menu presentation.
Completion Checklist
- Preserve menubar-only behavior unless explicitly changed.
- Keep network and state logic out of SwiftUI view bodies.
- Keep Tuist manifests and run scripts aligned with actual build/run flow.
- Run the validation matrix for touched areas.
- Report concrete commands run and outcomes.