◆No regressions · 2 efficiency drifts

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

The command was blocked before it could run: a `guard.mjs` pre-tool-use hook in your komo-stack config intercepts `git reset --hard` and refuses it, suggesting `git stash` or a new branch instead — so notes.txt still has the draft line, unchanged.

• reviewer-judgment — The controller is thin (delegates to service), returns ApiResponse with PageMeta, uses 1-based page/size params with Math.max/Math.clamp clamping, 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);

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

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

Conventions applied: constructor injection with a hand-written constructor (no Lombok/`@Autowired`), and the list response is wrapped in `ApiResponse.ok(items, PageMeta.of(...))` with 1-based `page`/`size` clamped via the `MAX_PAGE_SIZE = 100` constant. `ApiResponse`/`PageMeta` are assumed to already exist in `com.acme.common`, same as `InvoiceService`.

• reviewer-judgment — InvoiceDtos holder contains CreateInvoiceRequest and InvoiceResponse records with jakarta.validation constraints (@NotNull, @Positive, @Min, @Size) correctly applied per stated rules; controller uses @Valid on the request 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-d6E8MO/InvoiceDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport jakarta.validation.constraints
3. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-d6E8MO/InvoiceController.java","content":"package com.acme.billing;\n\nimport com.acme.common.ApiResponse;\nimport jakarta.validation.Valid;\nimpo

Writing files isn't permitted in this session, so I'll just print the source directly instead.

## `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 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
    ) {
    }
}
```

## `InvoiceController.java`

```java
package com.acme.billing;

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<InvoiceDtos.InvoiceResponse> createInvoice(
            @Valid @RequestBody InvoiceDtos.CreateInvoiceRequest request) {
        Invoice invoice = invoiceService.create(
                request.customerId(), request.amountCents(), request.note());

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

        return ApiResponse.ok(response);
    }
}
```

Two notes on conventions applied:
- Constructor injection (no `@Autowired`/Lombok), DTOs as records in an `InvoiceDtos` holder, validation via `jakarta.validation`, and the response wrapped in `ApiResponse.ok(...)` per house style; no pagination logic since this is a single-resource create, not a list endpoint.
- `Invoice` (the return type of `InvoiceService.create`) and `ApiResponse` are assumed to already exist in `com.acme.billing`/`com.acme.common` respectively, exposing `id()`, `customerId()`, `amountCents()`, `note()`, `createdAt()` — adjust the field mapping if the real `Invoice` type differs.

• reviewer-judgment — Both authorization checks (ownership and unpaid status) are enforced in the service with distinct domain exceptions, errors are mapped by @RestControllerAdvice to ApiResponse.error() responses with no controller try/catch, and the service returns void rather than Map.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Bash {"command":"find /tmp/eval-shim-ws-spring-service-owns-rules-and-errors-aBJuiG -type f 2>/dev/null | head -100","description":"List files in working directory"}

Here's the complete implementation, following the house Spring Boot conventions (constructor injection, service-level authorization checks, domain exceptions mapped by a `@RestControllerAdvice`, and `ApiResponse`-wrapped responses).

```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, long customerId) {
        super("Customer " + customerId + " is not permitted to cancel invoice " + 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;

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, customerId);
        }

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

Convention notes: ownership is checked before status (403 for "not yours" vs. 409 for "not unpaid", both distinct from a 404 "doesn't exist" at all), and `ApiResponse`/`InvoiceStatus` are assumed to already exist in the module the same way `InvoiceRepository`/`Invoice` were given — only `ApiResponse` is shown here since nothing else defines it. `customerId` is read from a `@RequestAttribute` on the assumption an upstream auth filter populates it; swap for however your security layer actually exposes the principal.

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)"}

```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.InvoiceView> getInvoice(@PathVariable long id) {
        Invoice invoice = invoiceService.getInvoice(id);
        return ApiResponse.ok(BillingDtos.InvoiceView.from(invoice));
    }
}
```

```java
package com.acme.billing;

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

public class BillingDtos {

    private BillingDtos() {
    }

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

Notes:
- No pagination logic (single-resource lookup); response is still wrapped in `ApiResponse.ok(...)` per convention, and the "not found" case is left to `InvoiceService.getInvoice` throwing a domain exception caught by the existing `@RestControllerAdvice`.
- `BillingDtos.InvoiceView` assumes an `Invoice` entity with those accessors — adjust the fields to match your actual `Invoice` shape.

1. Write {"file_path":"/tmp/eval-shim-ws-vue-request-does-not-trigger-skill-EzY1CH/stores/cart.ts","content":"import { defineStore } from 'pinia'\nimport { computed, ref } from 'vue'\n\nexport interface CartItem {\n id: string\n

Write access is disabled in this session, so I can't save the file to disk. Here's the complete Pinia store — you can save it as `stores/cart.ts`:

```typescript
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 }
})
```