Backend Java — Spring Boot controllers/services, JUnit controller tests, MakeMe. Read this first for any backend work. Use when working on the Java Spring backend.
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See how to installReview the instructions the agent will receive before you install.
Java/Spring in backend/src/main/java/com/odde/donut/. Tests under backend/src/test/. Schema changes: db-migration skill.
Matching backend-code (production Java) and backend-testing (tests) skills attach via paths when those files are in context — do not fetch them up front.
CURSOR_DEV=true nix develop -c pnpm backend:test_only
When a database migration is involved:
CURSOR_DEV=true nix develop -c pnpm backend:verify
Always run all backend unit tests, not a selected file or test case.
@JsonIgnore / @JsonView. Introduce a response DTO only when the wire shape differs.docs/database-erd.md with the database-erd skill (pnpm export:database-erd).NoteRepository.findAllByNotebookIdOrderByIdAsc is the complete stored content, trash included (export, Git snapshots, learning-session title recognition); findAvailableNotesByNotebookIdOrderByIdAsc and the Note.JPA_AVAILABLE / NATIVE_AVAILABLE predicates select participating notes (search, recall, health rules); findOccupiedFolderIdsByNotebookId counts stored content for folder occupancy. On a loaded Note, isTrashed() follows current folder ancestry and isTrashedInDatabase() is the persisted membership as loaded. Root _trash membership is owned by Folder.isTrashed and the trashed_folder view; do not recreate the rule in callers.Small-test style (unit-testing skill): prefer controller (HTTP-stable-boundary) tests; cover services/repos via realistic makeMe preconditions and the real DB (@Transactional). Test a service/algorithm directly only when it is an intentional domain-stable contract.
Mock only external services — OpenAIClient via OpenAiStructuredResponseMock. Ownership: notebookOwnedBy(user) so trackers inherit the owner. Group with @Nested.
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Backend Java production code, Spring Boot controllers/services/repositories, controller return values, imports, schema ERD pointer. Use when editing backend production Java.
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Backend Java tests, controller-level stable-boundary tests, JUnit, @Nested, MakeMe builders, @Transactional, parameterized tests. Use when writing or changing backend JUnit tests.
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related to donut CLI. Use when working on donut-cli.
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Set up and run the Donut dev environment on Cursor Cloud VM (no Nix). Use when working on Cloud VM, running tests on Cloud VM, or encountering command errors related to missing nix. Triggers on: cloud VM, cloud agent, no nix available, /workspace path.
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Regenerate docs/database-erd.md from MySQL information_schema (Mermaid ERD: foreign keys and key columns). Use after Flyway schema changes, new migrations, or when the diagram is stale. Triggers on: database ERD, database-erd.md, export_database_erd, schema diagram, ER diagram after migration.
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Database migration, Flyway, SQL migrations, schema changes, database versioning, migration files, squashing historical migrations. Use when adding or changing Flyway migrations or schema.
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