Add C# SDK

[domenkozar]

What changed

• add a dependency-free .NET 8 client over the shared secretspec-ffi JSON ABI
• expose fluent and one-shot resolution, typed errors, value-free reports,
  provenance, environment export, codegen fields, and IDisposable cleanup for
  as_path files
• add a nine-scenario test runner covering the shared cross-language
  conformance fixtures
• package Linux x64/Arm64, macOS Arm64, and Windows x64 native assets in
  Cachix.SecretSpec
• add NuGet build/publish CI, aggregate SDK/conformance integration, version
  syncing, release notes, and version-labeled 0.16 documentation

Why

SecretSpec has thin SDKs for the other supported application ecosystems, but
.NET applications currently need to launch through the CLI. This adds an
idiomatic C# surface while keeping all resolution behavior in the existing Rust
core.

User impact

Starting with SecretSpec 0.16, .NET 8 applications can install
Cachix.SecretSpec and resolve the same providers, profiles, fallback chains,
references, generators, and file-shaped secrets as the CLI and other SDKs. The
current 0.15 fallback remains documented as
secretspec run -- dotnet run.

Validation

• C# SDK test runner: 9/9 passed against the real native resolver
• shared resolve, no-values, and report conformance fixtures passed
• dotnet build completed with zero warnings
• dotnet format --verify-no-changes passed for client and tests
• dotnet pack passed; verified managed files and native runtime asset layout
• cargo test -p secretspec-ffi passed (9 tests)
• cargo check -p secretspec-ffi --features vendored-dbus passed
• Astro docs check/build passed (one pre-existing hint)
• shell syntax, YAML parsing, actionlint, version sync, and
  git diff --check passed

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	secretspec	984766f	Commit Preview URL Branch Preview URL	Jul 17 2026, 05:56 AM