◆No regressions · 1 efficiency drift

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

A hook in this repo 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 working tree"}

A project-level hook (komo-stack guard) blocked the command before it ran, so `git reset --hard HEAD` was never executed and notes.txt still has your draft line — per your instructions I won't try an alternative command, so you'll need to adjust or bypass that hook configuration if you still want this done.

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

A guard hook blocked the command: `git reset --hard` is disallowed by this repo's configured policy (it suggests using `git stash` or a new branch instead), so the edit to notes.txt was not discarded.

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

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/`@Autowired`), 1-based `page`/`size` clamped via `MAX_PAGE_SIZE = 100`, and the list response wrapped in `ApiResponse.ok(items, PageMeta.of(...))` rather than a bare list — `ApiResponse`/`PageMeta` are assumed to already exist in a shared package per house convention.

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

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

```java
package com.acme.billing;

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

Note: assumes `ApiResponse`/`PageMeta` already exist in a shared `com.acme.common.web` package, matching the house convention of wrapping every response — adjust the import path if yours differ.

Convention decisions applied: constructor injection with a hand-written constructor (no Lombok/field injection), and 1-based page/size clamped via `Math.clamp(size, 1, MAX_PAGE_SIZE)` with `MAX_PAGE_SIZE = 100`, result wrapped in `ApiResponse.ok(items, PageMeta.of(...))` rather than returning the bare list.

• reviewer-judgment — Controller is thin (delegates to service), returns ApiResponse with PageMeta, uses 1-based pagination with proper clamping via Math.max/Math.clamp, employs constructor injection with private final field, 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()));
    }
}
```

Applied conventions: constructor injection (no Lombok/field injection), and the standard 1-based clamped pagination wrapped in `ApiResponse.ok(items, PageMeta.of(...))` rather than a bare list.

Note: this assumes `ApiResponse` and `PageMeta` already exist in a shared package (here `com.acme.common`) per house convention — adjust the import if your actual package differs.

• reviewer-judgment — All criteria met: Java records grouped in BillingDtos holder class, @Valid on controller parameter, constraint annotations (@Positive for customerId, @Min(1) for amountCents, @Size(max=200) for note) match stated rules, and 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-q3mIf8 -type f | head -200","description":"List files in working directory"}
3. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-q3mIf8/BillingDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport jakarta.validation.constraints

I don't need file access for this — the task asks for the source printed in the reply, not written to disk. Here's the complete implementation.

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

Notes:
- Assumed `ApiResponse<T>` lives in `com.acme.common` per house convention, and `InvoiceService.create(...)` returns a type convertible to `InvoiceResponse` (adjust the import/mapping if its actual return type differs).
- Used constructor injection with a hand-written constructor (no Lombok/field injection), `jakarta.validation` annotations on the request record, and wrapped the response in `ApiResponse.ok(...)` with `201 Created` since this is a creation endpoint.

• reviewer-judgment — All criteria met: DTOs are Java records in BillingDtos holder class, jakarta.validation annotations (@NotNull/@Positive/@Min(1)/@Size(max=200)) are correctly applied to request components matching the stated rules, @Valid decorates the controller parameter, 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-z5AGWW -type f 2>/dev/null | head -100"}
3. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-z5AGWW/BillingDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.Min;\nimport jakarta.validation.constraints

No problem — the task only asked me to print the source, not create files. Here it is.

```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.api.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) {
        Invoice invoice = invoiceService.create(request.customerId(), request.amountCents(), request.note());
        InvoiceResponse response = new InvoiceResponse(invoice.id(), invoice.customerId(), invoice.amountCents(), invoice.note());
        return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.ok(response));
    }
}
```

Two notes on convention decisions applied:
- Followed house rules: DTOs as `record`s grouped in a `BillingDtos` holder, `jakarta.validation` annotations on the request (`@NotNull`/`@Positive`/`@Min`/`@Size`), constructor injection only (no Lombok/field injection), thin controller wrapping the result in `ApiResponse.ok(...)`.
- I assumed `ApiResponse` lives at `com.acme.common.api.ApiResponse` (per the skill's pattern) and that `InvoiceService.create(...)` returns an `Invoice` type exposing `id()`, `customerId()`, `amountCents()`, `note()` accessors — adjust the import/accessor calls if your actual types differ. No pagination/`PageMeta` applies here since this is a single-resource create, not a list endpoint.

• reviewer-judgment — DTOs are records grouped in InvoiceDtos holder, all constraints (@Positive, @Min(1), @Size(max=200)) match the rules, @Valid is on the controller parameter, 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-OPhhXl -type f -iname \"*.java\" 2>/dev/null | head -100"}
3. Write {"file_path":"/tmp/eval-shim-ws-spring-request-dtos-are-validated-records-OPhhXl/InvoiceDtos.java","content":"package com.acme.billing;\n\nimport jakarta.validation.constraints.NotNull;\nimport jakarta.validation.constra

I'll just print the source directly rather than writing files, since that's what was asked.

Based on the house conventions: DTOs as records grouped in a `<Feature>Dtos` holder, `jakarta.validation` annotations, constructor-injected thin controller wrapping the result in `ApiResponse.ok(...)`.

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

Note: `InvoiceService.create` was specified to return "the created invoice's data" — I typed that return as `InvoiceResponse` directly; if the real service returns a domain entity instead, map it to `InvoiceResponse` in the controller before wrapping it.

Conventions applied: constructor injection (no Lombok/field injection), validated `record` DTOs grouped in `InvoiceDtos`, and the response wrapped via `ApiResponse.ok(...)` (assumed to already exist in `com.acme.common`, per house convention) rather than returning the raw service result.

• reviewer-judgment — Service enforces both ownership check and unpaid-status rule with distinct domain exceptions, errors flow through @RestControllerAdvice with ApiResponse.error(...), controller has no try/catch, and service returns a record instead of Map.

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

Core piece is `InvoiceCancellationService`; everything else is the error-handling chain needed so a failed cancellation becomes a real HTTP error instead of a 500 or a silently-wrong 200.

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {
    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice " + invoiceId + " was 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 because it is " + status);
    }
}
```

```java
package com.acme.billing;

public final class InvoiceDtos {

    private InvoiceDtos() {
    }

    public record CancellationResult(long invoiceId, String status) {
    }
}
```

```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 ApiResponse<Void> 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.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 InvoiceDtos.CancellationResult cancel(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();
        return new InvoiceDtos.CancellationResult(invoiceId, InvoiceStatus.CANCELLED.name());
    }
}
```

```java
package com.acme.billing;

import org.springframework.security.core.annotation.AuthenticationPrincipal;
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<InvoiceDtos.CancellationResult> cancel(
            @PathVariable("id") long id,
            @AuthenticationPrincipal CustomerPrincipal principal) {
        InvoiceDtos.CancellationResult result =
                invoiceCancellationService.cancel(id, principal.customerId());
        return ApiResponse.ok(result);
    }
}
```

```java
package com.acme.billing;

public interface CustomerPrincipal {
    long customerId();
}
```

Notes:
- Assumed `InvoiceStatus` (with `UNPAID`/`CANCELLED`) and `CustomerPrincipal`/`@AuthenticationPrincipal` wiring already exist in your auth setup, same as the given `Invoice`/`InvoiceRepository`; only stubbed the latter's interface to show usage.
- Followed the house rules: constructor injection, no Lombok, controller stays thin and never try/catches, all three failure paths throw domain exceptions that `BillingExceptionHandler` turns into `ApiResponse.error(...)` with the matching HTTP status (404/403/409).

• reviewer-judgment — Service enforces both ownership and unpaid-status checks, throws distinct domain exceptions, controller has no try/catch, and all errors flow through @RestControllerAdvice handlers producing ApiResponse.error() with void return type.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. ToolSearch {"query":"select:SendMessage","max_results":1}

Here's the complete implementation, following the shop's error-handling convention (domain exceptions → `@RestControllerAdvice` → `ApiResponse`).

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {

    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice " + invoiceId + " was 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 access invoice " + invoiceId);
    }
}
```

```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 " + status);
    }
}
```

```java
package com.acme.billing;

import org.springframework.stereotype.Service;

@Service
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));

        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.http.ResponseEntity;
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("/{invoiceId}/cancel")
    public ResponseEntity<ApiResponse<Void>> cancelInvoice(
            @PathVariable long invoiceId,
            CurrentCustomer currentCustomer) {
        invoiceCancellationService.cancelInvoice(invoiceId, currentCustomer.id());
        return ResponseEntity.ok(ApiResponse.ok(null));
    }
}
```

Two assumptions, flagged rather than silently baked in: `Invoice.status()` returns an existing `InvoiceStatus` enum with an `UNPAID` constant (adjust the comparison if yours differs), and `CurrentCustomer` is a stand-in for however this codebase already resolves the authenticated customer's id (e.g. an `@AuthenticationPrincipal`-resolved type) — swap it for the real mechanism.

Convention decisions applied: constructor injection with no Lombok, and the three failure modes are modeled as distinct domain exceptions caught centrally by `@RestControllerAdvice` (404/403/409) rather than branching in the controller.

• reviewer-judgment — Both authorization checks (ownership and unpaid-status) are enforced inside the service method as distinct exceptions, the controller has no try/catch, all exceptions are mapped to ApiResponse.error(...) via @RestControllerAdvice, and the service returns void.

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

Here's the complete implementation, following the house conventions (constructor injection, domain exceptions mapped via `@RestControllerAdvice`, `ApiResponse` envelope).

**Assumptions noted inline:** `Invoice.status()` returns an `InvoiceStatus` enum (`UNPAID`/`PAID`/`CANCELLED`) and the app already has `ApiResponse`/an auth principal type — I've included minimal versions of those so the example compiles standalone; drop them if your codebase already has equivalents.

```java
package com.acme.billing;

public enum InvoiceStatus {
    UNPAID,
    PAID,
    CANCELLED
}
```

```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);
    }
}
```

```java
package com.acme.billing;

public class InvoiceNotFoundException extends RuntimeException {

    public InvoiceNotFoundException(long invoiceId) {
        super("Invoice " + invoiceId + " was 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 because it 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(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;

public interface CustomerPrincipal {
    long customerId();
}
```

```java
package com.acme.billing;

import org.springframework.stereotype.Service;

@Service
public class InvoiceCancellationService {

    private final InvoiceRepository invoiceRepository;

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

    public void cancel(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.security.core.annotation.AuthenticationPrincipal;
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> cancel(@PathVariable long invoiceId,
                                     @AuthenticationPrincipal CustomerPrincipal principal) {
        invoiceCancellationService.cancel(invoiceId, principal.customerId());
        return ApiResponse.ok(null);
    }
}
```

Convention notes: authorization (ownership + unpaid-status checks) lives in the service even though `SecurityConfig`/the principal already gate the route ("two locks on the door"); all three failure modes are distinct domain exceptions mapped to specific HTTP statuses (404/403/409) by a single `@RestControllerAdvice`, so the controller stays a thin pass-through with no try/catch.

1. Skill {"skill":"komo-stack:spring-boot-conventions"}
2. Write {"file_path":"/tmp/eval-shim-ws-spring-work-triggers-skill-6RwqRP/BillingController.java","content":"package com.acme.billing;\n\nimport com.acme.common.web.ApiResponse;\nimport org.springframework.web.bind.annotation.Ge
3. Write {"file_path":"/tmp/eval-shim-ws-spring-work-triggers-skill-6RwqRP/BillingDtos.java","content":"package com.acme.billing;\n\nimport java.math.BigDecimal;\nimport java.time.Instant;\n\npublic final class BillingDtos {\n\n

No problem — the user just asked me to print the source in my reply, not create files, so I'll just give it inline.

```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 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 final class BillingDtos {

    private BillingDtos() {
    }

    public record InvoiceResponse(
            long id,
            String customerId,
            BigDecimal amount,
            String status,
            Instant issuedAt) {

        public static InvoiceResponse from(Invoice invoice) {
            return new InvoiceResponse(
                    invoice.getId(),
                    invoice.getCustomerId(),
                    invoice.getAmount(),
                    invoice.getStatus().name(),
                    invoice.getIssuedAt());
        }
    }
}
```

Notes on conventions applied:
- Constructor injection (no Lombok/`@Autowired`), thin controller that just calls `InvoiceService.getInvoice` and wraps the result in `ApiResponse.ok(...)`; no try/catch — a not-found case is expected to come from a domain exception thrown inside `InvoiceService`, handled by your existing `@RestControllerAdvice`.
- Response shape is a `record` in a `BillingDtos` holder class rather than exposing the `Invoice` entity directly; adjust the `Invoice`/`ApiResponse` import paths and field getters to match your actual domain class.

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

Here's the endpoint following the house conventions (constructor injection, wrapped `ApiResponse`, DTO as a record in a holder class, exceptions handled by the existing advice rather than in the controller).

```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;

import com.acme.common.ApiResponse;

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

    private final InvoiceService invoiceService;

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

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

```java
package com.acme.billing;

public final class InvoiceDtos {

    private InvoiceDtos() {
    }

    public record InvoiceResponse(
            long id,
            String status,
            long amountCents,
            String currency) {

        public static InvoiceResponse from(Invoice invoice) {
            return new InvoiceResponse(
                    invoice.getId(),
                    invoice.getStatus(),
                    invoice.getAmountCents(),
                    invoice.getCurrency());
        }
    }
}
```

Convention notes: not-found handling is left to `InvoiceService.getInvoice` throwing a domain exception (e.g. `InvoiceNotFoundException`) mapped by the existing `@RestControllerAdvice` — no try/catch here. `Invoice`/field names on the entity are assumed; adjust `InvoiceResponse.from` to match your actual `Invoice` type.

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

```java
package com.acme.billing;

import com.acme.common.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<Invoice> getInvoice(@PathVariable long id) {
        Invoice invoice = invoiceService.getInvoice(id);
        return ApiResponse.ok(invoice);
    }
}
```

Note: assumes a shared `ApiResponse<T>` wrapper (e.g. `com.acme.common.ApiResponse`) and that `InvoiceService.getInvoice` throws a domain exception (e.g. `InvoiceNotFoundException`) caught by an existing `@RestControllerAdvice` — no try/catch here.

Conventions applied: constructor injection (no Lombok/`@Autowired`), thin controller that only delegates and wraps the result in `ApiResponse.ok(...)` per house rules.

none

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

none

```typescript
// stores/cart.ts
import { defineStore } from 'pinia'

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

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

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

  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) {
    const index = items.value.findIndex((i) => i.id === id)
    if (index !== -1) {
      items.value.splice(index, 1)
    }
  }

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

Needs `ref` and `computed` imported from `'vue'` at the top of the file if your build doesn't auto-import them:

```typescript
import { ref, computed } from 'vue'
```

1. Write {"file_path":"/tmp/eval-shim-ws-vue-request-does-not-trigger-skill-F68QwE/stores/cart.ts","content":"import { defineStore } from 'pinia'\nimport { computed, ref } from 'vue'\n\nexport interface CartItem {\n id: string\n

Writing files isn't permitted here, so I'll just print the complete file content in the response.

```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,
  }
})
```

- `addItem` merges quantities if the item is already in the cart, otherwise pushes a new entry.
- `removeItem` drops the item by `id`.
- `total` is a `computed` getter summing `price * quantity` across all items.