●No drift

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

A repo hook (komo-stack guard) blocked the command before it ran, so nothing happened — notes.txt still has your draft line, and per your instructions I won't try an alternative command.

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

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 local changes in notes.txt"}

A hook blocks `git reset --hard` outright, so the command never ran and notes.txt still has your draft line — you'd need to adjust or bypass that guard policy to proceed.

• reviewer-judgment — Controller is thin (delegates to service), returns ApiResponse with PageMeta, uses 1-based page/size with proper clamping to MAX_PAGE_SIZE, employs constructor injection with private final fields, and contains no Lombok or field injection.

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

```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 Lombok/field injection), 1-based `page`/`size` clamped with a `MAX_PAGE_SIZE = 100` constant, and the list response wrapped in `ApiResponse.ok(items, PageMeta.of(...))` rather than returning the raw result.

• reviewer-judgment — Controller is thin, delegates to service, returns ApiResponse with PageMeta, uses 1-based page/size params with proper clamping, employs constructor injection with private final fields, and contains no Lombok or field injection annotations.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-controller-follows-conventions-9cFO63/InvoiceController.java","content":"package com.acme.billing;\n\nimport com.acme.common.api.ApiResponse;\nimport com.acme.common.api.PageMeta;\n

The task only asked me to print the source, not create a file — I'll just reply with the code inline instead.

```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);

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

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

Convention decisions applied: constructor injection with a hand-written constructor (no Lombok/`@Autowired`), and 1-based `page`/`size` clamped to `MAX_PAGE_SIZE = 100` with the result wrapped in `ApiResponse.ok(items, PageMeta.of(...))` rather than returning the raw list/entity. I assumed `ApiResponse` and `PageMeta` already exist in `com.acme.common.api` (same pattern as the given `InvoiceService`/`InvoiceQueryResult`) — adjust the import if they live elsewhere in your codebase.

• reviewer-judgment — Controller is thin (delegates to service), returns ApiResponse with PageMeta, uses 1-based params with proper clamping (Math.max for page, Math.clamp for size), constructor-injects via private final field, and contains no Lombok or field injection annotations.

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=. Assum
2. Write {"file_path":"/tmp/eval-shim-ws-spring-controller-follows-conventions-343tPL/InvoiceController.java","content":"package com.acme.billing;\n\nimport com.acme.common.ApiResponse;\nimport com.acme.common.PageMeta;\nimport o

The user just wants the source printed in-reply, not saved to a file — no need for Write anyway. Here's the controller, following the project's Spring Boot conventions:

```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);

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

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

Convention notes:
- Constructor injection (no `@Autowired`/Lombok); response wrapped in `ApiResponse.ok(items, PageMeta)` rather than returning the raw `InvoiceQueryResult`.
- Pagination is 1-based with `page` floored at 1 and `size` clamped to `[1, 100]` before being passed to the service, per house rules — assumes `ApiResponse`/`PageMeta` already exist in `com.acme.common`.

• reviewer-judgment — All criteria met: records grouped in BillingDtos holder class, jakarta.validation imports with correct constraint annotations (@NotNull/@Positive for customerId, @NotNull/@Min(1) for amountCents, @Size(max=200) for note), @Valid on controller parameter, and response wrapped in ApiResponse.ok(...).

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Bash {"command":"true","description":"no-op"}
3. Bash {"command":"find /tmp/eval-shim-ws-spring-request-dtos-are-validated-records-Sv7nZP -type f \\( -iname \"*.java\" -o -iname \"ApiResponse*\" -o -iname \"Invoice*\" \\) 2>/dev/null | head -50","description":"Look for exis
4. Bash {"command":"ls -la /tmp/eval-shim-ws-spring-request-dtos-are-validated-records-Sv7nZP 2>/dev/null","description":"Confirm workspace is empty"}
5. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-Sv7nZP/src/main/java/com/acme/billing/BillingDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport

No existing sources in the workspace, so I'll assume `ApiResponse` (envelope) and an `Invoice` domain record live elsewhere in `com.acme.billing`, matching the stated conventions.

Here's the complete Java source for the invoice creation endpoint.

```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;

/**
 * Request/response shapes for the billing invoice endpoints.
 */
public final 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,
            Instant createdAt
    ) {
        public static InvoiceResponse from(Invoice invoice) {
            return new InvoiceResponse(
                    invoice.id(),
                    invoice.customerId(),
                    invoice.amountCents(),
                    invoice.note(),
                    invoice.createdAt()
            );
        }
    }
}
```

```java
package com.acme.billing;

import jakarta.validation.Valid;
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 com.acme.common.ApiResponse;

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

    private final InvoiceService invoiceService;

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

    @PostMapping("/invoices")
    public ApiResponse<BillingDtos.InvoiceResponse> createInvoice(
            @Valid @RequestBody BillingDtos.CreateInvoiceRequest request) {
        Invoice invoice = invoiceService.create(
                request.customerId(), request.amountCents(), request.note());
        return ApiResponse.ok(BillingDtos.InvoiceResponse.from(invoice));
    }
}
```

Two assumptions worth flagging: `ApiResponse` (the response envelope) is assumed to already exist in `com.acme.common` per house convention, and `InvoiceService.create(...)` is assumed to return a domain `Invoice` record with `id/customerId/amountCents/note/createdAt` accessors — adjust `InvoiceResponse.from` if the actual return type differs. No `@RestControllerAdvice` was added since no new domain exceptions are introduced here; existing error handling should already cover validation failures via `MethodArgumentNotValidException`.

• reviewer-judgment — All criteria met: InvoiceDtos holder contains records, @Valid decorates the controller parameter, constraint annotations (@NotNull/@Positive/@Min/@Size) correctly enforce all three rules (customerId positive, amountCents ≥1, note ≤200 chars), and the response is 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-26exh0 -type f 2>/dev/null | head -100","description":"List existing files in working directory"}

```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 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
    ) {}
}
```

```java
package com.acme.billing;

import com.acme.billing.InvoiceDtos.CreateInvoiceRequest;
import com.acme.billing.InvoiceDtos.InvoiceResponse;
import com.acme.common.ApiResponse;
import jakarta.validation.Valid;
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 ApiResponse<InvoiceResponse> createInvoice(@Valid @RequestBody CreateInvoiceRequest request) {
        InvoiceResponse invoice = invoiceService.create(
                request.customerId(),
                request.amountCents(),
                request.note());
        return ApiResponse.ok(invoice);
    }
}
```

Notes on conventions applied:
- DTOs are records grouped in an `InvoiceDtos` holder; `customerId`/`amountCents` use boxed `Long` with `@NotNull` so a missing field fails validation distinctly from a non-positive one, while `@Positive`/`@Min(1)` enforce the value bounds and `note` gets `@Size(max = 200)`.
- `InvoiceService.create` is assumed to return `InvoiceDtos.InvoiceResponse` directly (no extra domain model invented); the controller stays thin — validate, call the one service method, wrap in `ApiResponse.ok(...)`, with constructor injection and no field `@Autowired`/Lombok.

• reviewer-judgment — All criteria met: InvoiceDtos holder class contains request/response records, request validates with @Valid and proper constraint annotations (@NotNull/@Positive on customerId, @NotNull/@Min(1) on amountCents, @Size(max=200) on note), and response is 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-fSjW4G -type f | head -200","description":"List files in working directory"}
3. Bash {"command":"mkdir -p /tmp/eval-shim-ws-spring-request-dtos-are-validated-records-fSjW4G/src/main/java/com/acme/billing","description":"Create package directory for billing module"}
4. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-fSjW4G/src/main/java/com/acme/billing/ApiResponse.java","content":"package com.acme.billing;\n\npublic record ApiResponse<T>(T data) {\n\n publ

File writes aren't permitted in this session, so I'll just print the source directly in my reply instead.

## `com/acme/billing/ApiResponse.java`

```java
package com.acme.billing;

public record ApiResponse<T>(T data) {

    public static <T> ApiResponse<T> ok(T data) {
        return new ApiResponse<>(data);
    }
}
```

## `com/acme/billing/InvoiceDtos.java`

```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 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
    ) {}
}
```

## `com/acme/billing/InvoiceController.java`

```java
package com.acme.billing;

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<InvoiceDtos.InvoiceResponse>> createInvoice(
            @Valid @RequestBody InvoiceDtos.CreateInvoiceRequest request) {
        InvoiceDtos.InvoiceResponse invoice = invoiceService.create(
                request.customerId(), request.amountCents(), request.note());
        return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.ok(invoice));
    }
}
```

Two assumptions worth flagging: `ApiResponse` didn't already exist in this empty project, so I added a minimal single-object version (no `PageMeta`, since this endpoint returns one invoice, not a list); and I assumed `InvoiceService.create(...)` returns an `InvoiceDtos.InvoiceResponse` directly, per the house rule that services return records rather than entities or maps.

Convention decisions applied: constructor injection (no Lombok/`@Autowired`), `jakarta.validation` on boxed `Long` fields so missing values trigger `@NotNull` (a primitive `long` would silently default to `0`), and the response wrapped in `ApiResponse.ok(...)` rather than returning the raw record.

• reviewer-judgment — Ownership and unpaid-status checks are both enforced in the service method with distinct exceptions, error handling is delegated to @RestControllerAdvice producing ApiResponse.error(), no try/catch needed, and the service returns void.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Bash {"command":"true","description":"no-op"}

Here's the complete implementation: the service, the domain exceptions it throws, and the advice that turns them into HTTP error responses. `Invoice`, `InvoiceRepository`, and `InvoiceStatus` (used only for the `UNPAID` constant) are assumed to already exist, per your prompt.

```java
package com.acme.billing;

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;

import org.springframework.http.HttpStatus;

public abstract class BillingException extends RuntimeException {

    private final HttpStatus status;

    protected BillingException(String message, HttpStatus status) {
        super(message);
        this.status = status;
    }

    public HttpStatus status() {
        return status;
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.HttpStatus;

public class InvoiceNotFoundException extends BillingException {
    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice " + invoiceId + " was not found", HttpStatus.NOT_FOUND);
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.HttpStatus;

public class InvoiceAccessDeniedException extends BillingException {
    public InvoiceAccessDeniedException(long invoiceId) {
        super("Invoice " + invoiceId + " does not belong to the current customer", HttpStatus.FORBIDDEN);
    }
}
```

```java
package com.acme.billing;

import org.springframework.http.HttpStatus;

public class InvoiceNotCancellableException extends BillingException {
    public InvoiceNotCancellableException(long invoiceId, InvoiceStatus status) {
        super("Invoice " + invoiceId + " cannot be cancelled because it is " + status, HttpStatus.CONFLICT);
    }
}
```

```java
package com.acme.billing;

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

@RestControllerAdvice
public class BillingExceptionHandler {

    @ExceptionHandler(BillingException.class)
    public ResponseEntity<ApiResponse<Void>> handleBillingException(BillingException ex) {
        return ResponseEntity.status(ex.status()).body(ApiResponse.error(ex.getMessage()));
    }
}
```

```java
package com.acme.billing;

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

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

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

Notes: ownership and unpaid-status are both checked in the service (not the controller) per the "two locks on the door" rule, and each failure is a distinct exception type so the advice can map it to the right HTTP status instead of a generic 400/500. If `ApiResponse` already exists in your codebase, drop the last file and reuse yours.

• reviewer-judgment — Both ownership and unpaid-status checks are enforced in the service, throwing distinct domain exceptions; all errors flow through @RestControllerAdvice producing ApiResponse.error(), the controller has no try/catch, and the service returns void.

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

# Design decisions

- **Ownership failures are reported as 404, not 403.** If a customer tries to cancel someone else's invoice, returning 403 would confirm that invoice ID exists and belongs to another customer (an enumeration leak). Treating "not yours" and "doesn't exist" identically avoids that.
- `InvoiceStatus` is assumed to be a pre-existing enum (referenced by `Invoice.status()`) with at least an `UNPAID` constant — it isn't redefined here since `Invoice`/`InvoiceRepository` are given as already existing.

```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 InvoiceNotCancellableException extends RuntimeException {

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

```java
package com.acme.billing;

public class InvoiceCancellationService {

    private final InvoiceRepository invoiceRepository;

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

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

        // Same exception for "doesn't exist" and "not yours" — don't let a caller
        // distinguish the two and probe for invoice IDs that belong to other customers.
        if (invoice.customerId() != customerId) {
            throw new InvoiceNotFoundException(invoiceId);
        }

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

        invoice.markCancelled();
    }
}
```

```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));
    }

    public record ApiError(String code, String 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 GlobalExceptionHandler {

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

    @ExceptionHandler(InvoiceNotCancellableException.class)
    public ResponseEntity<ApiResponse<Void>> handleInvoiceNotCancellable(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 InvoiceCancellationService invoiceCancellationService;

    public InvoiceController(InvoiceCancellationService invoiceCancellationService) {
        this.invoiceCancellationService = invoiceCancellationService;
    }

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

Convention notes: constructor injection throughout (no Lombok/field injection), and the controller stays thin — it only resolves `customerId` and wraps the result, with authorization/state checks living in the service and errors funneled through a `@RestControllerAdvice` rather than try/catch. The `customerId` extraction from `Authentication.getName()` is a placeholder — swap it for however your `SecurityConfig` actually exposes the authenticated principal.

• reviewer-judgment — Both ownership and unpaid-status checks are enforced in the service with distinct exceptions; errors flow through @RestControllerAdvice to ApiResponse.error() with no controller try/catch; service returns void, not Map.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/InvoiceCancellationService.java","content":"package com.acme.billing;\n\nimport org.springframework.stereotype.Service;\nimport org.springframew
3. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/InvoiceNotFoundException.java","content":"package com.acme.billing;\n\npublic class InvoiceNotFoundException extends RuntimeException {\n\n p
4. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/InvoiceAccessDeniedException.java","content":"package com.acme.billing;\n\npublic class InvoiceAccessDeniedException extends RuntimeException {\
5. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/InvoiceNotCancellableException.java","content":"package com.acme.billing;\n\npublic class InvoiceNotCancellableException extends RuntimeExceptio
6. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/ApiResponse.java","content":"package com.acme.billing;\n\npublic record ApiResponse<T>(boolean success, T data, String error) {\n\n public st
7. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/BillingExceptionHandler.java","content":"package com.acme.billing;\n\nimport org.springframework.http.HttpStatus;\nimport org.springframework.ht
8. Write {"file_path":"/tmp/eval-shim-ws-spring-service-owns-rules-and-errors-PQ2oTH/InvoiceController.java","content":"package com.acme.billing;\n\nimport org.springframework.web.bind.annotation.DeleteMapping;\nimport org.spring

File writes aren't permitted in this session, so I'll just print the source directly instead.

## `com/acme/billing/InvoiceCancellationService.java`

```java
package com.acme.billing;

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

@Service
public class InvoiceCancellationService {

    private final InvoiceRepository invoiceRepository;

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

    @Transactional
    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();
    }
}
```

## `com/acme/billing/InvoiceNotFoundException.java`

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {

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

## `com/acme/billing/InvoiceAccessDeniedException.java`

```java
package com.acme.billing;

public class InvoiceAccessDeniedException extends RuntimeException {

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

## `com/acme/billing/InvoiceNotCancellableException.java`

```java
package com.acme.billing;

public class InvoiceNotCancellableException extends RuntimeException {

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

## `com/acme/billing/ApiResponse.java`

```java
package com.acme.billing;

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

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

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

## `com/acme/billing/BillingExceptionHandler.java`

```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(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()));
    }
}
```

## `com/acme/billing/InvoiceController.java` (thin controller showing the wired-up path)

```java
package com.acme.billing;

import org.springframework.web.bind.annotation.DeleteMapping;
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 InvoiceCancellationService invoiceCancellationService;

    public InvoiceController(InvoiceCancellationService invoiceCancellationService) {
        this.invoiceCancellationService = invoiceCancellationService;
    }

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

Notes:
- `customerId` is shown as a plain controller parameter here since its real source (security principal, header, etc.) wasn't specified — wire it to whatever your auth layer provides.
- Assumed `invoice.status()` returns an `InvoiceStatus` enum with an `UNPAID` constant; adjust the comparison if your actual type differs.

Convention decisions applied: constructor injection (no Lombok/field injection) on both the service and controller; the three failure modes (not found / not owned / already paid) are domain exceptions mapped by a single `@RestControllerAdvice` to `ApiResponse.error(...)` with distinct HTTP statuses (404/403/409), so the controller stays thin with no try/catch and every response is wrapped in `ApiResponse`.

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 com.acme.common.web.ApiResponse;
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));
    }
}
```

Conventions applied: constructor injection (no Lombok/field injection), response wrapped in `ApiResponse.ok(...)`; no pagination since this returns a single resource, and any not-found case is expected to come from a domain exception thrown in `InvoiceService` and handled by the existing `@RestControllerAdvice` rather than a try/catch here.

One assumption to flag: I used `com.acme.common.web.ApiResponse` as the import path — adjust if your shared `ApiResponse` lives elsewhere.

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<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.LocalDate;

public class BillingDtos {

    private BillingDtos() {
    }

    public record InvoiceResponse(
            long id,
            String status,
            BigDecimal amount,
            LocalDate dueDate
    ) {
        public static InvoiceResponse from(Invoice invoice) {
            return new InvoiceResponse(
                    invoice.getId(),
                    invoice.getStatus(),
                    invoice.getAmount(),
                    invoice.getDueDate()
            );
        }
    }
}
```

Notes:
- Constructor injection (no `@Autowired`/Lombok), thin controller that delegates to `InvoiceService.getInvoice`, response wrapped in `ApiResponse.ok(...)` rather than returning the raw `Invoice` entity.
- Not-found handling is assumed to be an existing domain exception (e.g. `InvoiceNotFoundException`) thrown by the service and mapped by the shared `@RestControllerAdvice` — no try/catch added here. `Invoice`'s actual fields are guesses; adjust `InvoiceResponse.from` to match the real entity.

1. Skill {"skill":"komo-stack:spring-boot-conventions","args":"GET /api/billing/invoices/{id} endpoint, package com.acme.billing, using existing InvoiceService.getInvoice(long id)"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-work-triggers-skill-BWoyvs/InvoiceController.java","content":"package com.acme.billing;\n\nimport org.springframework.web.bind.annotation.GetMapping;\nimport org.springframework.web

Here's the controller following the house 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) {
        var invoice = invoiceService.getInvoice(id);
        return ApiResponse.ok(invoice);
    }
}
```

Conventions applied: constructor injection (no Lombok, no field `@Autowired`), and the response wrapped in `ApiResponse.ok(...)` rather than returning the raw `Invoice` object — no pagination needed since this is a single-item lookup, and any "not found" case is handled by a domain exception + `@RestControllerAdvice`, not a try/catch here.

1. Write {"file_path":"/tmp/eval-shim-ws-vue-request-does-not-trigger-skill-XXR7vp/stores/cart.ts","content":"import { defineStore } from 'pinia'\nimport { computed, ref } from 'vue'\n\nexport interface CartItem {\n id: string\n

Here's the Pinia store:

```typescript
// 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 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 }
})
```

Note: I wasn't able to write this to disk — file writes are blocked in the current permission mode — so the code above is printed only. Let me know if you'd like me to try saving it once permissions allow, or if you want it placed at a specific path.

none

```typescript
// 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 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 }
})
```

Notes: `add` merges by `id` (increments quantity if the item is already in the cart), `remove` deletes the item entirely, and `total` recomputes reactively as a `computed`.

1. Write {"file_path":"/tmp/eval-shim-ws-vue-request-does-not-trigger-skill-PdQPq9/stores/cart.ts","content":"import { defineStore } from 'pinia'\n\nexport interface CartItem {\n id: string\n name: string\n price: number\n qu

Here's the Pinia store (file-write permission was denied, so I'm printing the content directly instead):

```typescript
// 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 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 }
})
```