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RpgRoller/FAQ.md

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# FAQ
## Why does this starter use custom frontend lint/format scripts instead of heavy npm dependencies?
The kickoff scaffold is intentionally lightweight and keeps only strictly relevant tooling:
- API client generation from the OpenAPI contract
- TypeScript compilation for frontend source files
- basic frontend contract checks
- deterministic formatting checks used by `scripts/ci-local.ps1`
This keeps the first commit small while preserving CI discipline. Additional tooling can be introduced when the frontend stack is finalized.
## Is frontend JavaScript handwritten?
No. Frontend source code lives in `RpgRoller/frontend/*.ts` and is compiled to `RpgRoller/wwwroot/*.js` for browser delivery.
## Where is backend state stored locally?
Backend state is persisted via EF Core + SQLite.
- Development default: `RpgRoller/App_Data/rpgroller.development.db`
- Non-development default: `RpgRoller/App_Data/rpgroller.db`
To start with a clean backend state, stop the app and remove the corresponding SQLite file.
## Does the backend read SQLite on every API call?
No. The backend loads state from SQLite once during startup into in-memory state and serves requests from memory. Successful state mutations are then written back to SQLite.
## Where is the frontend UX plan documented?
The canonical frontend UX design lives in `UX.md` at the repository root. It defines roles, flows, screen behavior, validation/error handling, responsive behavior, and real-time update expectations to guide implementation.
## What does test coverage include?
Coverage now includes the entire backend project (`RpgRoller`), including API/hosting/bootstrap code and services. It is no longer restricted to `RpgRoller.Services.*`.
## Why do backend services avoid API request DTO dependencies?
Service workflows accept explicit parameters (for example, `CreateCampaign(sessionToken, name, rulesetId)`) instead of API request DTOs. This keeps the service layer independent from HTTP transport contracts while avoiding extra service-only wrapper command types.