Working on the RomM Python backend (backend/) — a FastAPI app with SQLAlchemy 2.0, Alembic, RQ/Redis, and Socket.IO. Use when adding or changing API endpoints, handlers, ORM models, response schemas, metadata-provider adapters, background tasks, database migrations, or backend tests. Covers the layered architecture, conventions, auth/scopes, the OpenAPI→frontend type pipeline, and the uv/pytest/alembic/trunk workflow. Trigger on any work under backend/.
Building or modifying components in the RomM v2 frontend (frontend/src/v2/). Use when creating/editing v2 primitives (R* components in src/v2/lib/), shared composites, or feature composites — covers the three-tier model, file/folder conventions, SFC structure, import order, barrels, Storybook requirements, and v2 anti-patterns. Trigger on any work under frontend/src/v2/.
Cross-cutting feature patterns for the RomM v2 frontend — error/snackbar handling, loading & skeleton states, real-time Socket.IO updates, UI state persistence (URL vs localStorage vs ephemeral), pagination/infinite scroll, forms & validation, permissions (useCan), and destructive confirmations. Use when wiring up a v2 feature's behavior (not just its markup). Trigger when implementing data flows, dialogs, forms, toggles, or permission gating under frontend/src/v2/.
Theming, design tokens, colors, and visual language in the RomM v2 frontend. Use when styling v2 components, picking colors, adding/using CSS variables, working with light/dark themes, or whenever you'd reach for a hex/rgba literal. Covers the token pipeline (src/v2/tokens/index.ts → build:tokens → tokens.css), the .r-v2 scope classes, the zero-hex-literal policy, and shared state semantics. Trigger on any color/theme/token work under frontend/src/v2/.
The before-handoff / before-PR verification gate for RomM, covering both stacks. Use right before committing, opening a PR, or telling the user a change is done — to run the right static checks, tests, and (for UI) manual browser/theme/input/Storybook checks so CI stays green. Covers frontend (typecheck/lint/test/build/i18n/tokens), backend (pytest/alembic/trunk), and the OpenAPI regen step. Trigger when wrapping up any change.
Internationalization for the RomM frontend (both v1 and v2). Use whenever adding, renaming, or removing any user-visible string / translation key under frontend/src/locales/. Covers the en_US-is-source rule, the requirement to add every new key to ALL locale directories in the same change, namespace layout, and the check_i18n_locales.py validator enforced in CI. Trigger on any change to frontend/src/locales/**.
Universal input (mouse, touch, keyboard, gamepad) and responsive/universal-viewport layout in the RomM v2 frontend. Use when adding interactive v2 components, focus management, spatial navigation, gamepad/keyboard handling, modality-gated focus rings, breakpoints, or responsive layout. Covers useInput, focus geometry primitives, the overlay scope stack, useBreakpoint, and the data-bp/data-input attributes. Trigger on interactive or responsive work under frontend/src/v2/.