[swift6] fix Vapor build, disable swift 5 tests on CI and enable more swift 6 tests on CI

[4brunu]

[swift6] fix Vapor build, disable swift 5 tests on CI and enable more swift 6 tests on CI

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@jgavris (2017/07) @ehyche (2017/08) @Edubits (2017/09) @jaz-ah (2017/09) @4brunu (2019/11) @dydus0x14 (2023/06)

---

Summary by cubic

Fixes the Swift 6 Vapor client build and enables it in CI. Disables Swift 5 tests and updates templates and samples to compile cleanly with Swift 6 and Vapor 4.99+.

• Bug Fixes

  • Vapor templates compile on Swift 6: apiWrapper is @sendable; ContentConfiguration is explicitly typed.
  • Added retroactive Content/ResponseEncodable and AsyncResponseEncodable conformances (e.g., Set).
  • Raw API methods now accept an apiConfiguration parameter (defaulted).
  • Package.swift uses .product(name: "Vapor", package: "vapor") and requires Vapor >= 4.99.
  • Sample Vapor models switch to structs and Sendable; generated equals/hash code removed.
  • CI: disable Swift 5 tests; enable Swift 6 PromiseKit and Vapor sample builds.

• Migration

  • Requires Swift 6 toolchain and Vapor >= 4.99.
  • Custom apiWrapper closures must be @sendable.
  • Raw API methods include an optional apiConfiguration argument; existing calls continue to work.
  • If you rely on class-based models, regenerate; samples now default to structs (useClasses: false).

^{Written for commit 44c9160. Summary will update on new commits.}

[cubic-dev-ai]

3 issues found across 62 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="modules/openapi-generator/src/main/resources/swift6/api.mustache">

<violation number="1" location="modules/openapi-generator/src/main/resources/swift6/api.mustache:358">
P2: Default headers ignore the passed `apiConfiguration`, so callers using a custom configuration still send shared headers. Use the provided configuration for the default headers to keep behavior consistent.</violation>

<violation number="2" location="modules/openapi-generator/src/main/resources/swift6/api.mustache:438">
P2: Default headers ignore the supplied `apiConfiguration`, so callers using a custom configuration still send shared headers. Make the default headers derive from the provided configuration.</violation>
</file>

<file name="modules/openapi-generator/src/main/resources/swift6/Package.swift.mustache">

<violation number="1" location="modules/openapi-generator/src/main/resources/swift6/Package.swift.mustache:45">
P2: Missing comma after the Vapor dependency will generate invalid Package.swift when additional dependencies are enabled. Add a trailing comma inside the useVapor block.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[4brunu]

CI Failure is not related to this PR.