### Description Update the project documentation so that it accurately reflects the latest architecture and backend changes. Relevant documentation includes: - docs/Architecture.md - docs/Testing.md - docs/Setup.md - README.md ### Rationale Several documents still describe the previous backend structure and do not fully reflect the current GraphQL schema, resolver organization, rating system, and database behavior. ### Acceptance criteria - [x] Update references to the backend schema and resolver locations. - [x] Document the current rating mutation and rating-related fields. - [x] Ensure the architecture description matches the current frontend/backend data flow. - [x] Remove or update outdated statements and unfinished placeholders. - [x] Review related documentation for consistent wording. - [x] Check all updated Markdown files for spelling and formatting errors.