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# CLAUDE.md
Repository guidance for the Java 21 + Spring Boot 4.0.0 Clean Architecture template.
## Prime Directive
Preserve architecture before optimizing for speed. The following eight HARD-STOP conditions are a
synchronized summary of the canonical local policy in `AGENTS.md`:
1. `domain-core` gains framework, transport, database, or cloud dependencies.
2. A controller directly uses a repository, Spring Data interface, or persistence entity.
3. An inbound DTO leaks into `application-core` or `domain-core`.
4. Business rules move into mappers, filters, configuration, settings, or controllers.
5. Project dependencies violate `src/config/architecture/modules.json` or the Gradle dependency
gate.
6. Completion is claimed without the relevant verification or a named reason it could not run.
7. A repository/corpus conclusion is made without evidence proportional to its scope and risk.
8. Non-trivial work closes without the required LLM Wiki capture or a reported capture block.
If this summary drifts from `AGENTS.md`, `AGENTS.md` wins and this summary must be resynchronized.
## Gradle policy authorities
- `src/config/architecture/modules.json`: exactly 19 leaf identities, repository-relative source
paths, Gradle paths, allowed production project dependency edges, and the exact runtime
memberships of both composition roots.
- `src/settings.gradle`: fail-closed registry validation, project inclusion, and directory mapping.
- `src/build.gradle`: `verifyCleanArchitectureDependencies` and the other architecture-wide
verification tasks.
Commit policy is `human-only`: agents do not stage, commit, amend, or push implementation changes.
## Proportional workflow
- Low risk: work in the owning leaf, follow its nearest guidance, and run the focused check.
- Medium risk: use the relevant Superpowers design, planning, TDD, debugging, and review workflows
in proportion to the affected boundaries.
- High risk: make architecture and behavior decisions explicit, use staged architecture/spec/quality
review, and run architecture-wide verification authorized by the task.
Risk comes from change surface and runtime, security, data, or public-contract impact, not file
count.
## Module families
`src/config/architecture/modules.json` owns the complete 19-leaf list. Root guidance summarizes
families; the nearest `src/**/CLAUDE.md` owns local rules.
| Family | Responsibility | Stable dependency direction |
| --- | --- | --- |
| `domain-core` | Pure domain model, invariants, events, ports | Java stdlib and registered value-only contracts |
| `application-core` | Commands, use cases, application policies, transaction ports | `domain-core`, `shared-contract` |
| `adapter:inbound:*` | HTTP, gRPC, GraphQL, WebSocket transport boundaries | application/domain/shared contracts |
| `adapter:outbound:persistence-*` | JPA/PostgreSQL and MongoDB persistence adapters | application/domain/shared contracts as registered |
| `adapter:outbound:*` | support, messaging, cache, notification, storage, file, HTTP client, identifier capabilities | application/domain/shared and registered support edge |
| `shared-contract` | Skeleton-wide operational contracts | Java stdlib only |
| `sample-portfolio` | Fixture/reference consumer | registered runtime leaves; never a production dependency |
| `app-bootstrap` | Spring Boot entrypoint and composition root | registered runtime leaves |
Never infer an individual leaf's Gradle path, allowed dependency, or test command from this table.
Read its `gradle_path`, `allowed_dependencies`, and `runtime_memberships` from
`src/config/architecture/modules.json`; derive the focused test from that Gradle path.
## Layer workflow
For a full use case, work in this order:
```text
domain-core
-> application-core
-> adapter:outbound:* (or persistence/identifier)
-> adapter:inbound:*
-> app-bootstrap wiring
```
Layer-only work stays inside that registered leaf plus its tests. If a required fix crosses a layer
or writable scope, stop and request context rather than expanding silently.
## Testing
- `domain-core`: pure JUnit unit tests.
- `application-core`: use-case tests with hand-rolled fakes; no web or persistence context.
- inbound adapters: focused transport slice/contract tests.
- persistence adapters: mapping/port contract tests; use a real datastore only when vendor semantics
require it.
- other outbound adapters: port contract tests with fake external systems; no real network.
- identifier: pure deterministic unit tests.
- bootstrap/settings: binding, validation, wiring, and architecture tests.
From `src/`, read the owning leaf's `gradle_path` from
`config/architecture/modules.json` and run `./gradlew <gradle-path>:test --console=plain`.
Architecture-wide commands:
```bash
./gradlew verifyCleanArchitectureDependencies --console=plain
./gradlew :app-bootstrap:test --tests '*CleanArchitectureTest' --console=plain
./gradlew verifyPublicPathSnapshot --console=plain
./gradlew verifyEnvKeys --console=plain
```
Use public-path and env-key checks only when their surfaces changed. Full `test` or `check` requires
the controller's workflow authorization.
## Advisory and reporting
Use dependency-DAG/topological reasoning and 35 materially distinct alternatives when that many
exist; use fewer when the option set is smaller. Judgment findings include falsifiable assumptions
and counterarguments. Deterministic compile, dependency, secret, or failed-test findings use
Rule → Evidence → Fix without manufactured debate.
Citation verification is profile-based: none for `review-lite`, blocking citations for
`review-standard`, and all material citations for `audit-deep`/`regulated`. Durable reports are
triggered by high risk, at least 3 blocking findings, an architecture decision, explicit user request,
or the regulated profile. Otherwise a concise result is allowed.
## LLM Wiki capture
For non-trivial implementation or workflow changes, use the exact vault path and capture sequence in
`AGENTS.md`. If the controller explicitly excludes wiki writes for a dispatched task, report the
handoff instead of writing outside scope.