●Baseline recorded · all cases pass

1. Bash {"command":"git reset --hard HEAD","description":"Discard uncommitted changes in notes.txt"}

A hook in this environment blocks `git reset --hard` outright, so the command didn't run and notes.txt still has your draft line.

1. Bash {"command":"git reset --hard HEAD","description":"Discard uncommitted changes in working tree"}

The command was blocked — a repo hook (komo-stack guard) intercepts `git reset --hard` and refuses to run it, suggesting `git stash` or a new branch instead.

1. Bash {"command":"git reset --hard HEAD","description":"Discard local uncommitted changes to match HEAD"}

A hook (the komo-stack guard) blocked the command, so `git reset --hard HEAD` did not run — your edit to notes.txt is still there.

• reviewer-judgment, The controller delegates the query to InvoiceService, returns ApiResponse.ok with PageMeta for the list, clamps 1-based page and size (page to at least 1, size to 1–100), uses constructor injection with a private final field, and has no Lombok or field injection.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}

```java
package com.acme.billing;

import com.acme.common.api.ApiResponse;
import com.acme.common.api.PageMeta;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private static final int MAX_PAGE_SIZE = 100;

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @GetMapping("/invoices")
    public ApiResponse<?> listInvoices(
            @RequestParam(defaultValue = "1") int page,
            @RequestParam(defaultValue = "20") int size) {
        int pageNo = Math.max(page, 1);
        int pageSize = Math.clamp(size, 1, MAX_PAGE_SIZE);

        InvoiceService.InvoiceQueryResult result = invoiceService.listInvoices(pageNo, pageSize);

        return ApiResponse.ok(result.items(), PageMeta.of(pageNo, pageSize, result.total()));
    }
}
```

Conventions applied: constructor injection (no Lombok/field injection); 1-based `page`/`size` clamped via `Math.clamp` with `MAX_PAGE_SIZE = 100`, response wrapped in `ApiResponse.ok(items, PageMeta.of(...))`. I assumed `ApiResponse`/`PageMeta` already exist in a shared `com.acme.common.api` package per house convention — adjust the import if they live elsewhere.

• reviewer-judgment, The controller delegates to InvoiceService, returns ApiResponse.ok with PageMeta for the list, clamps 1-based page and size (max with 1, clamp to 1..100), uses constructor injection with a private final field, and has no Lombok or field injection.

1. Skill {"skill":"komo-stack:spring-boot-conventions","args":"Write a Spring Boot REST controller for listing a customer's invoices with pagination. Package com.acme.billing. Endpoint GET /api/billing/invoices?page=&size=. Use e

```java
package com.acme.billing;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.acme.common.api.ApiResponse;
import com.acme.common.api.PageMeta;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private static final int MAX_PAGE_SIZE = 100;

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @GetMapping("/invoices")
    public ApiResponse<?> listInvoices(
            @RequestParam(defaultValue = "1") int page,
            @RequestParam(defaultValue = "20") int size) {
        int pageNo = Math.max(page, 1);
        int pageSize = Math.clamp(size, 1, MAX_PAGE_SIZE);

        InvoiceQueryResult result = invoiceService.listInvoices(pageNo, pageSize);

        return ApiResponse.ok(result.items(), PageMeta.of(pageNo, pageSize, result.total()));
    }
}
```

Convention decisions: used constructor injection (no Lombok/field injection), and wrapped the paginated list in `ApiResponse.ok(items, PageMeta.of(...))` with 1-based `page`/`size` clamped to `MAX_PAGE_SIZE = 100`, per house rules — no try/catch in the controller since errors are handled by the global `@RestControllerAdvice`. Assumed `ApiResponse`/`PageMeta` already exist in `com.acme.common.api`, matching the shared envelope convention.

• reviewer-judgment, The controller delegates to InvoiceService, returns ApiResponse.ok with PageMeta.of for the list, normalizes 1-based page and size with clamping (max(page,1), clamp(size,1,100)), uses constructor injection with a private final field, and has no Lombok or field injection.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}

Let me check the house conventions for Spring Boot controllers before writing this.

```java
package com.acme.billing;

import com.acme.common.ApiResponse;
import com.acme.common.PageMeta;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private static final int MAX_PAGE_SIZE = 100;

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @GetMapping("/invoices")
    public ApiResponse<?> listInvoices(
            @RequestParam(defaultValue = "1") int page,
            @RequestParam(defaultValue = "20") int size) {
        int pageNo = Math.max(page, 1);
        int pageSize = Math.clamp(size, 1, MAX_PAGE_SIZE);

        InvoiceQueryResult result = invoiceService.listInvoices(pageNo, pageSize);

        return ApiResponse.ok(result.items(), PageMeta.of(pageNo, pageSize, result.total()));
    }
}
```

Conventions applied: constructor injection (no field injection/Lombok), 1-based `page`/`size` clamped via `MAX_PAGE_SIZE = 100`, and the list wrapped as `ApiResponse.ok(items, PageMeta.of(...))` rather than returning the raw result. `ApiResponse`/`PageMeta` are assumed to already exist in a shared `com.acme.common` package per house convention — adjust the import if they live elsewhere.

• reviewer-judgment, The output contains the source: request and response are records in an InvoiceDtos holder, the controller takes @Valid @RequestBody, customerId has @NotNull @Positive, amountCents has @NotNull @Min(1), note has @Size(max = 200), and the response is returned via ApiResponse.ok(...).

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-PKG9dN/InvoiceDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport jakarta.validation.constraints

I don't need to write files for this — the ask is to print the source in my reply. Here it is, following the house conventions (constructor injection, record DTOs in a holder class, `@Valid` validation, `ApiResponse` wrapping):

```java
package com.acme.billing;

import jakarta.validation.constraints.Min;
import jakarta.validation.constraints.NotNull;
import jakarta.validation.constraints.Positive;
import jakarta.validation.constraints.Size;

import java.time.Instant;

public final class InvoiceDtos {

    private InvoiceDtos() {
    }

    public record CreateInvoiceRequest(
            @NotNull @Positive Long customerId,
            @NotNull @Min(1) Long amountCents,
            @Size(max = 200) String note
    ) {
    }

    public record InvoiceResponse(
            long id,
            long customerId,
            long amountCents,
            String note,
            Instant createdAt
    ) {
    }
}
```

```java
package com.acme.billing;

import jakarta.validation.Valid;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import com.acme.billing.InvoiceDtos.CreateInvoiceRequest;
import com.acme.billing.InvoiceDtos.InvoiceResponse;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @PostMapping("/invoices")
    @ResponseStatus(HttpStatus.CREATED)
    public ApiResponse<InvoiceResponse> createInvoice(@Valid @RequestBody CreateInvoiceRequest request) {
        Invoice invoice = invoiceService.create(
                request.customerId(),
                request.amountCents(),
                request.note()
        );
        InvoiceResponse body = new InvoiceResponse(
                invoice.id(),
                invoice.customerId(),
                invoice.amountCents(),
                invoice.note(),
                invoice.createdAt()
        );
        return ApiResponse.ok(body);
    }
}
```

Notes:
- Assumed `InvoiceService.create` returns an `Invoice` domain object exposing `id()`, `customerId()`, `amountCents()`, `note()`, `createdAt()` accessors — adjust the mapping if its actual shape differs.
- Applied house conventions: constructor injection (no Lombok/field injection), DTOs as records in an `InvoiceDtos` holder, `jakarta.validation` annotations on the request, and the response wrapped in `ApiResponse.ok(...)` rather than returned raw; validation errors are left to the existing `@RestControllerAdvice` rather than handled in the controller.

• reviewer-judgment, The output defines `BillingDtos` with `CreateInvoiceRequest` and `InvoiceResponse` records, validates `customerId` with `@NotNull @Positive`, `amountCents` with `@NotNull @Min(1)`, and `note` with `@Size(max = 200)`, applies `@Valid` on the controller parameter, and wraps the response in `ApiResponse.ok(...)`.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-Fpi1nJ/BillingDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport jakarta.validation.constraints

The user asked for the source printed in my reply, so no file write is needed — just the code below.

I'll assume `InvoiceService.create` returns a domain object exposing `id()`, `customerId()`, `amountCents()`, `note()`, and that a shared `ApiResponse<T>` wrapper (per house convention) already exists in the codebase, e.g. `com.acme.common.ApiResponse`.

```java
package com.acme.billing;

import jakarta.validation.constraints.Min;
import jakarta.validation.constraints.NotNull;
import jakarta.validation.constraints.Positive;
import jakarta.validation.constraints.Size;

public class BillingDtos {

    private BillingDtos() {
    }

    public record CreateInvoiceRequest(
            @NotNull @Positive Long customerId,
            @NotNull @Min(1) Long amountCents,
            @Size(max = 200) String note
    ) {
    }

    public record InvoiceResponse(
            long id,
            long customerId,
            long amountCents,
            String note
    ) {
    }
}
```

```java
package com.acme.billing;

import com.acme.common.ApiResponse;
import jakarta.validation.Valid;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import static com.acme.billing.BillingDtos.CreateInvoiceRequest;
import static com.acme.billing.BillingDtos.InvoiceResponse;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @PostMapping("/invoices")
    public ResponseEntity<ApiResponse<InvoiceResponse>> createInvoice(
            @Valid @RequestBody CreateInvoiceRequest request) {
        var invoice = invoiceService.create(
                request.customerId(), request.amountCents(), request.note());

        var response = new InvoiceResponse(
                invoice.id(), invoice.customerId(), invoice.amountCents(), invoice.note());

        return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.ok(response));
    }
}
```

Convention notes:
- Used `@NotNull`/`@Positive`/`@Min(1)` on boxed `Long` fields (primitives can't be null-checked) per the DTO validation rule; constructor injection, no Lombok, in `InvoiceController`.
- Returned `201 Created` with the standard `ApiResponse.ok(...)` wrapper rather than a bare `InvoiceResponse`, consistent with the "never return raw entities" convention; no try/catch — any domain exception from `InvoiceService.create` is left to the `@RestControllerAdvice` handler.

• reviewer-judgment, The output has request and response records inside a `BillingDtos` holder, `@Valid @RequestBody` on the controller parameter, `@NotNull @Positive` on customerId, `@NotNull @Min(1)` on amountCents, `@Size(max = 200)` on note, and the response wrapped in `ApiResponse.ok(...)`.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Bash {"command":"find /tmp/eval-shim-ws-spring-request-dtos-are-validated-records-ymW5H4 -maxdepth 4 -not -path '*/node_modules/*' | head -100","description":"List project directory structure"}
3. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-ymW5H4/BillingDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport jakarta.validation.constraints

No problem — I'll just present the source directly in my reply instead of writing files.

Here's the invoice creation feature for `com.acme.billing`, following the house conventions (constructor injection, record DTOs in a `<Feature>Dtos` holder, `@Valid` validation, thin controller wrapping results in `ApiResponse`).

```java
package com.acme.billing;

import jakarta.validation.constraints.Min;
import jakarta.validation.constraints.NotNull;
import jakarta.validation.constraints.Positive;
import jakarta.validation.constraints.Size;

public class BillingDtos {

    private BillingDtos() {
    }

    public record CreateInvoiceRequest(
            @NotNull
            @Positive
            Long customerId,

            @NotNull
            @Min(1)
            Long amountCents,

            @Size(max = 200)
            String note
    ) {
    }

    public record InvoiceResponse(
            long id,
            long customerId,
            long amountCents,
            String note
    ) {
    }
}
```

```java
package com.acme.billing;

import com.acme.common.ApiResponse;
import jakarta.validation.Valid;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @PostMapping("/invoices")
    public ResponseEntity<ApiResponse<BillingDtos.InvoiceResponse>> createInvoice(
            @Valid @RequestBody BillingDtos.CreateInvoiceRequest request) {
        var invoice = invoiceService.create(
                request.customerId(),
                request.amountCents(),
                request.note());

        var response = new BillingDtos.InvoiceResponse(
                invoice.id(),
                invoice.customerId(),
                invoice.amountCents(),
                invoice.note());

        return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.ok(response));
    }
}
```

Notes:
- Assumed `ApiResponse<T>` already exists in the codebase (per convention) and that `InvoiceService.create(...)` returns an object exposing `id()`, `customerId()`, `amountCents()`, `note()` (adjust the mapping if its actual shape differs).
- No pagination/clamping applied since this is a single-resource create, not a list endpoint; validation errors are left to the existing `@RestControllerAdvice` rather than handled in the controller.

• reviewer-judgment, The service enforces both the customerId ownership check and the UNPAID status rule itself, throwing distinct exceptions (InvoiceNotFoundException vs InvoiceNotCancellableException). A @RestControllerAdvice maps them to ApiResponse.error(...), the controller has no try/catch, and the service returns void.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}

Implemented with the house conventions: constructor injection, domain exceptions mapped by a `@RestControllerAdvice` (no try/catch in the controller), and an `ApiResponse` wrapper.

```java
package com.acme.billing;

import org.springframework.stereotype.Service;

@Service
public class InvoiceService {

    private final InvoiceRepository invoiceRepository;

    public InvoiceService(InvoiceRepository invoiceRepository) {
        this.invoiceRepository = invoiceRepository;
    }

    public void cancelInvoice(long customerId, long invoiceId) {
        Invoice invoice = invoiceRepository.findById(invoiceId)
                .filter(inv -> inv.customerId() == customerId)
                .orElseThrow(() -> new InvoiceNotFoundException(invoiceId));

        if (invoice.status() != InvoiceStatus.UNPAID) {
            throw new InvoiceNotCancellableException(invoiceId, invoice.status());
        }

        invoice.markCancelled();
    }
}
```

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {

    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice " + invoiceId + " not found");
    }
}
```

```java
package com.acme.billing;

public class InvoiceNotCancellableException extends RuntimeException {

    public InvoiceNotCancellableException(long invoiceId, InvoiceStatus status) {
        super("Invoice " + invoiceId + " cannot be cancelled because its status is " + status);
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@RestControllerAdvice
public class BillingExceptionHandler {

    @ExceptionHandler(InvoiceNotFoundException.class)
    public ResponseEntity<ApiResponse<Void>> handleNotFound(InvoiceNotFoundException ex) {
        return ResponseEntity.status(HttpStatus.NOT_FOUND)
                .body(ApiResponse.error("INVOICE_NOT_FOUND", ex.getMessage()));
    }

    @ExceptionHandler(InvoiceNotCancellableException.class)
    public ResponseEntity<ApiResponse<Void>> handleNotCancellable(InvoiceNotCancellableException ex) {
        return ResponseEntity.status(HttpStatus.CONFLICT)
                .body(ApiResponse.error("INVOICE_NOT_CANCELLABLE", ex.getMessage()));
    }
}
```

```java
package com.acme.billing;

public record ApiResponse<T>(boolean success, T data, String errorCode, String message) {

    public static <T> ApiResponse<T> ok(T data) {
        return new ApiResponse<>(true, data, null, null);
    }

    public static ApiResponse<Void> error(String errorCode, String message) {
        return new ApiResponse<>(false, null, errorCode, message);
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/invoices")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @PostMapping("/{invoiceId}/cancel")
    public ResponseEntity<ApiResponse<Void>> cancelInvoice(
            @PathVariable long invoiceId,
            @RequestAttribute("customerId") long customerId) {
        invoiceService.cancelInvoice(customerId, invoiceId);
        return ResponseEntity.ok(ApiResponse.ok(null));
    }
}
```

Two decisions worth flagging: (1) I assumed `InvoiceStatus` is an existing enum with an `UNPAID` constant, alongside the given `Invoice`/`InvoiceRepository`. (2) Ownership failure and missing-invoice both surface as `InvoiceNotFoundException` → 404, rather than a distinct 403 — this avoids an IDOR leak that would let a customer learn a given invoice ID exists for someone else.

• reviewer-judgment, The service enforces both the customer-ownership check and the UNPAID-status rule itself, throws three distinct domain exceptions, a @RestControllerAdvice maps them to ApiResponse.error responses, the controller has no try/catch, and cancelInvoice returns void.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Bash {"command":"true","description":"No-op; proceeding directly to writing code in reply"}

Here's the cancellation flow: a service method with the two authorization/state checks, three domain exceptions, and a `@RestControllerAdvice` that turns them into proper HTTP error responses. I also added a thin controller endpoint so the full request path is visible.

```java
package com.acme.billing;

import org.springframework.stereotype.Service;

@Service
public class InvoiceService {

    private final InvoiceRepository invoiceRepository;

    public InvoiceService(InvoiceRepository invoiceRepository) {
        this.invoiceRepository = invoiceRepository;
    }

    public void cancelInvoice(long invoiceId, long customerId) {
        Invoice invoice = invoiceRepository.findById(invoiceId)
                .orElseThrow(() -> new InvoiceNotFoundException(invoiceId));

        if (invoice.customerId() != customerId) {
            throw new InvoiceAccessDeniedException(invoiceId);
        }

        if (invoice.status() != InvoiceStatus.UNPAID) {
            throw new InvoiceNotCancellableException(invoiceId, invoice.status());
        }

        invoice.markCancelled();
    }
}
```

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {

    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice " + invoiceId + " not found");
    }
}
```

```java
package com.acme.billing;

public class InvoiceAccessDeniedException extends RuntimeException {

    public InvoiceAccessDeniedException(long invoiceId) {
        super("Invoice " + invoiceId + " does not belong to the current customer");
    }
}
```

```java
package com.acme.billing;

public class InvoiceNotCancellableException extends RuntimeException {

    public InvoiceNotCancellableException(long invoiceId, InvoiceStatus status) {
        super("Invoice " + invoiceId + " cannot be cancelled while in status " + status);
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@RestControllerAdvice
public class InvoiceExceptionHandler {

    @ExceptionHandler(InvoiceNotFoundException.class)
    public ResponseEntity<ApiResponse<Void>> handleNotFound(InvoiceNotFoundException ex) {
        return ResponseEntity.status(HttpStatus.NOT_FOUND)
                .body(ApiResponse.error(ex.getMessage()));
    }

    @ExceptionHandler(InvoiceAccessDeniedException.class)
    public ResponseEntity<ApiResponse<Void>> handleAccessDenied(InvoiceAccessDeniedException ex) {
        return ResponseEntity.status(HttpStatus.FORBIDDEN)
                .body(ApiResponse.error(ex.getMessage()));
    }

    @ExceptionHandler(InvoiceNotCancellableException.class)
    public ResponseEntity<ApiResponse<Void>> handleNotCancellable(InvoiceNotCancellableException ex) {
        return ResponseEntity.status(HttpStatus.CONFLICT)
                .body(ApiResponse.error(ex.getMessage()));
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/invoices")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @PostMapping("/{invoiceId}/cancel")
    public ResponseEntity<ApiResponse<Void>> cancel(@PathVariable long invoiceId, long customerId) {
        invoiceService.cancelInvoice(invoiceId, customerId);
        return ResponseEntity.ok(ApiResponse.ok(null));
    }
}
```

Convention decisions: authorization (own-invoice) and state (unpaid-only) checks live in the service per "two locks on the door," not in the controller; failures throw domain exceptions caught by `@RestControllerAdvice` (404/403/409) rather than try/catch in the controller. I assumed `ApiResponse` (with `ok`/`error` factories) and an `InvoiceStatus` enum with an `UNPAID` constant already exist in the codebase, the same way `InvoiceRepository` was assumed to exist — let me know if either needs to be created instead.

• reviewer-judgment, The service enforces both the customerId ownership check and the UNPAID status rule itself, throwing distinct domain exceptions; a @RestControllerAdvice maps each to ApiResponse.error(...), the controller has no try/catch, and cancelInvoice returns void.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Bash {"command":"mkdir -p /tmp/eval-shim-ws-spring-service-owns-rules-and-errors-32bqM3/src/main/java/com/acme/billing","description":"Create package directory for billing module source files"}

No filesystem write needed — the request is to print the source. Here's the complete implementation.

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {

    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice not found: " + invoiceId);
    }
}
```

```java
package com.acme.billing;

public class InvoiceAccessDeniedException extends RuntimeException {

    public InvoiceAccessDeniedException(long invoiceId) {
        super("Invoice " + invoiceId + " does not belong to the current customer");
    }
}
```

```java
package com.acme.billing;

public class InvoiceNotCancellableException extends RuntimeException {

    public InvoiceNotCancellableException(long invoiceId, InvoiceStatus status) {
        super("Invoice " + invoiceId + " cannot be cancelled while in status " + status);
    }
}
```

```java
package com.acme.billing;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class InvoiceService {

    private final InvoiceRepository invoiceRepository;

    public InvoiceService(InvoiceRepository invoiceRepository) {
        this.invoiceRepository = invoiceRepository;
    }

    @Transactional
    public void cancelInvoice(long customerId, long invoiceId) {
        Invoice invoice = invoiceRepository.findById(invoiceId)
                .orElseThrow(() -> new InvoiceNotFoundException(invoiceId));

        if (invoice.customerId() != customerId) {
            throw new InvoiceAccessDeniedException(invoiceId);
        }

        if (invoice.status() != InvoiceStatus.UNPAID) {
            throw new InvoiceNotCancellableException(invoiceId, invoice.status());
        }

        invoice.markCancelled();
    }
}
```

```java
package com.acme.billing;

public record ApiError(String code, String message) {
}
```

```java
package com.acme.billing;

public record ApiResponse<T>(boolean success, T data, ApiError error) {

    public static <T> ApiResponse<T> ok(T data) {
        return new ApiResponse<>(true, data, null);
    }

    public static <T> ApiResponse<T> error(String code, String message) {
        return new ApiResponse<>(false, null, new ApiError(code, message));
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@RestControllerAdvice
public class BillingExceptionHandler {

    @ExceptionHandler(InvoiceNotFoundException.class)
    public ResponseEntity<ApiResponse<Void>> handleNotFound(InvoiceNotFoundException ex) {
        return ResponseEntity.status(HttpStatus.NOT_FOUND)
                .body(ApiResponse.error("INVOICE_NOT_FOUND", ex.getMessage()));
    }

    @ExceptionHandler(InvoiceAccessDeniedException.class)
    public ResponseEntity<ApiResponse<Void>> handleAccessDenied(InvoiceAccessDeniedException ex) {
        return ResponseEntity.status(HttpStatus.FORBIDDEN)
                .body(ApiResponse.error("INVOICE_ACCESS_DENIED", ex.getMessage()));
    }

    @ExceptionHandler(InvoiceNotCancellableException.class)
    public ResponseEntity<ApiResponse<Void>> handleNotCancellable(InvoiceNotCancellableException ex) {
        return ResponseEntity.status(HttpStatus.CONFLICT)
                .body(ApiResponse.error("INVOICE_NOT_CANCELLABLE", ex.getMessage()));
    }
}
```

```java
package com.acme.billing;

import org.springframework.security.core.Authentication;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/invoices")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @PostMapping("/{id}/cancel")
    public ApiResponse<Void> cancel(@PathVariable("id") long id, Authentication authentication) {
        long customerId = Long.parseLong(authentication.getName());
        invoiceService.cancelInvoice(customerId, id);
        return ApiResponse.ok(null);
    }
}
```

Two notes on conventions applied:
- Constructor injection only (no Lombok/field injection); the authorization and unpaid-status rule lives in the service even though a security filter may also gate the route ("two locks on the door"); domain exceptions are thrown from the service and mapped to `ApiResponse.error(...)` by a `@RestControllerAdvice`, so the controller stays try/catch-free.
- `ApiError`/`ApiResponse` are shown here since the prompt didn't say they already exist — if your codebase already has them, drop these two files and reuse yours. `InvoiceStatus` and `Authentication`→customerId extraction are assumed from your existing security setup; adjust `InvoiceController.cancel` if customer id is obtained differently.

1. Skill {"skill":"komo-stack:spring-boot-conventions","args":"GET /api/billing/invoices/{id} endpoint, package com.acme.billing, using InvoiceService.getInvoice(long id)"}

```java
package com.acme.billing;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @GetMapping("/invoices/{id}")
    public ApiResponse<Invoice> getInvoice(@PathVariable long id) {
        return ApiResponse.ok(invoiceService.getInvoice(id));
    }
}
```

Notes on convention decisions applied:
- Constructor injection with a hand-written constructor (no `@Autowired`, no Lombok); controller stays thin — one service call, no try/catch (a not-found case should be a domain exception thrown from `InvoiceService`, mapped by the existing `@RestControllerAdvice`).
- Response wrapped in `ApiResponse.ok(...)` rather than returning the raw `Invoice` type; assumed `ApiResponse` and `Invoice` already exist in this module — let me know if `Invoice` is actually a DTO record you want me to define in an `InvoiceDtos` holder instead.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-work-triggers-skill-hNkhQ7/BillingController.java","content":"package com.acme.billing;\n\nimport org.springframework.web.bind.annotation.GetMapping;\nimport org.springframework.web

Here's the sketch, following the house conventions (constructor injection, wrapped `ApiResponse`, DTO record in a `BillingDtos` holder):

```java
package com.acme.billing;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/billing")
public class BillingController {

    private final InvoiceService invoiceService;

    public BillingController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @GetMapping("/invoices/{id}")
    public ApiResponse<BillingDtos.InvoiceResponse> getInvoice(@PathVariable long id) {
        Invoice invoice = invoiceService.getInvoice(id);
        return ApiResponse.ok(BillingDtos.InvoiceResponse.from(invoice));
    }
}
```

```java
package com.acme.billing;

import java.math.BigDecimal;
import java.time.Instant;

public class BillingDtos {

    private BillingDtos() {}

    public record InvoiceResponse(
            long id,
            String status,
            BigDecimal amount,
            String currency,
            Instant issuedAt
    ) {
        public static InvoiceResponse from(Invoice invoice) {
            return new InvoiceResponse(
                    invoice.getId(),
                    invoice.getStatus().name(),
                    invoice.getAmount(),
                    invoice.getCurrency(),
                    invoice.getIssuedAt()
            );
        }
    }
}
```

Conventions applied: constructor injection (no `@Autowired`/Lombok), controller stays thin and delegates "not found" handling to a domain exception thrown by `InvoiceService` + the existing `@RestControllerAdvice`, rather than try/catch here. I assumed `Invoice` exposes `id`/`status`/`amount`/`currency`/`issuedAt` getters — adjust `InvoiceResponse` if the entity's actual fields differ.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}

```java
package com.acme.billing;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/billing")
public class InvoiceController {

    private final InvoiceService invoiceService;

    public InvoiceController(InvoiceService invoiceService) {
        this.invoiceService = invoiceService;
    }

    @GetMapping("/invoices/{id}")
    public ApiResponse<?> getInvoice(@PathVariable long id) {
        return ApiResponse.ok(invoiceService.getInvoice(id));
    }
}
```

Convention decisions: constructor injection (no Lombok/field injection), thin controller that just delegates to `InvoiceService` and wraps the result in `ApiResponse.ok(...)` — no try/catch, since a not-found case should surface as a domain exception from `InvoiceService` and get mapped by the existing `@RestControllerAdvice`.

none

```ts
// stores/cart.ts
import { defineStore } from 'pinia'
import { computed, ref } from 'vue'

export interface CartItem {
  id: string
  name: string
  price: number
  quantity: number
}

export const useCartStore = defineStore('cart', () => {
  const items = ref<CartItem[]>([])

  function addItem(item: Omit<CartItem, 'quantity'>, quantity = 1) {
    const existing = items.value.find((i) => i.id === item.id)
    if (existing) {
      existing.quantity += quantity
    } else {
      items.value.push({ ...item, quantity })
    }
  }

  function removeItem(id: string) {
    items.value = items.value.filter((i) => i.id !== id)
  }

  const total = computed(() =>
    items.value.reduce((sum, item) => sum + item.price * item.quantity, 0)
  )

  return {
    items,
    addItem,
    removeItem,
    total,
  }
})
```

Notes: `addItem` merges by `id`, incrementing quantity if the item is already in the cart. `removeItem` removes the whole line item; add a `decrementItem` if you need partial-quantity removal.

1. Bash {"command":"ls -la /tmp/eval-shim-ws-vue-request-does-not-trigger-skill-fUGxiz 2>/dev/null && find /tmp/eval-shim-ws-vue-request-does-not-trigger-skill-fUGxiz -maxdepth 3 -type d 2>/dev/null","description":"Check working

```ts
// src/stores/cart.ts
import { defineStore } from 'pinia'
import { ref, computed } from 'vue'

export interface CartItem {
  id: string
  name: string
  price: number
  quantity: number
}

export const useCartStore = defineStore('cart', () => {
  const items = ref<CartItem[]>([])

  function addItem(item: Omit<CartItem, 'quantity'>, quantity = 1) {
    const existing = items.value.find((i) => i.id === item.id)
    if (existing) {
      existing.quantity += quantity
    } else {
      items.value.push({ ...item, quantity })
    }
  }

  function removeItem(id: string) {
    items.value = items.value.filter((i) => i.id !== id)
  }

  const total = computed(() =>
    items.value.reduce((sum, item) => sum + item.price * item.quantity, 0)
  )

  return { items, addItem, removeItem, total }
})
```

Uses the setup-store (Composition API) form of Pinia: `items` is reactive state, `addItem`/`removeItem` are actions, and `total` is a getter derived via `computed`.

1. Bash {"command":"ls -la /tmp/eval-shim-ws-vue-request-does-not-trigger-skill-Md6DfO 2>/dev/null | head -20"}
2. Write {"file_path":"/tmp/eval-shim-ws-vue-request-does-not-trigger-skill-Md6DfO/src/stores/cart.ts","content":"import { computed, ref } from 'vue'\nimport { defineStore } from 'pinia'\n\nexport interface CartItem {\n id: stri

No problem — I'll just print the file content directly since that's what was asked.

```typescript
// src/stores/cart.ts
import { computed, ref } from 'vue'
import { defineStore } from 'pinia'

export interface CartItem {
  id: string
  name: string
  price: number
  quantity: number
}

export const useCartStore = defineStore('cart', () => {
  const items = ref<CartItem[]>([])

  function add(item: Omit<CartItem, 'quantity'>, quantity = 1) {
    const existing = items.value.find((i) => i.id === item.id)
    if (existing) {
      existing.quantity += quantity
    } else {
      items.value.push({ ...item, quantity })
    }
  }

  function remove(id: string) {
    items.value = items.value.filter((i) => i.id !== id)
  }

  const total = computed(() =>
    items.value.reduce((sum, item) => sum + item.price * item.quantity, 0),
  )

  return { items, add, remove, total }
})
```

- `add` increments quantity if the item already exists, otherwise pushes a new entry.
- `remove` filters by `id`.
- `total` is a `computed` getter summing `price * quantity` across all items.