fix: DTO parameter hydration inconsistency

[fr3on]

Description

Standardized DTO parameter mapping to prevent crashes when partial data is provided in the JSON payload.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• PHPStan reports no errors

[github-actions]

🚀 Quill Performance Metrics

Environment: Ubuntu · PHP 8.3 · quill-core 0.0.2 · 2 workers Quill Core

Quill Binary Benchmark
  > Server     : Quill Core
  > Tool       : wrk
  > Duration   : 5s
  > Connections: 50
  > Workers    : 2
  > Starting Quill server...
  > Server is ready. Running benchmarks...
    Running 5s test @ http://127.0.0.1:8080/hello
      2 threads and 50 connections
      Thread Stats   Avg      Stdev     Max   +/- Stdev
        Latency   699.43us  630.57us   6.19ms   85.38%
        Req/Sec    40.51k     5.42k   59.48k    86.00%
      403383 requests in 5.01s, 62.32MB read
    Requests/sec:  80582.83
    Transfer/sec:     12.45MB

  > Benchmarks completed.