Remove the broken Stainless csharp target so spec PRs stop failing CI

[benwgold]

Summary

Removes the csharp target from .stainless/stainless.yml so the Build SDKs for pull request / preview check stops failing on every spec-changing PR.

Why every spec PR is red: Stainless's csharp build CI is broken upstream for ANY freshly generated code (content-independent, proven by bisect on #650, breakage window ~Jul 3). The preview check gates on a per-language head-vs-base regression, and with csharp in main's config the base build resolves to a cached pre-breakage csharp success — so every fresh head failure counts as a regression → red.

Why this fixes it: with csharp out of the config on main, base builds have no cached csharp success to regress from — matching outcomes on base and head → "not a regression" → green. Proven end-to-end by probe #659: the exact previously-failing change class (doc-comment-only codegen delta) ran against a csharp-free base and preview passed. Full mechanics: investigation writeup.

No shipping impact: the csharp target is unpublished (production_repo: null, publish.nuget: false). Re-add the block when Stainless fixes their csharp build CI upstream.

Sequencing (for #657 and other open spec PRs)

1. Merge this PR — its own preview will be red (its base is current main); merge through it (precedent: feat(openapi): add rail + settlement-timing fields to OutgoingTransaction #633, Add idType/identifier to IndividualCustomerCreateRequest (ENG-10686) #637).
2. Merge/rebase main into open spec PRs (e.g. docs(cards): PAN reveal via POST /cards/{id}/reveal; panEmbedUrl off the Card resource #657) — their next preview run goes green.

Verification

• make lint passes; the file matches the exact removal previously validated on the docs(cards): PAN reveal via POST /cards/{id}/reveal; panEmbedUrl off the Card resource #657 branch (commit 069ad9a) and by probe Probe: Stainless preview vs csharp-free base (throwaway) #659.

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🤖 thundering-graviton-3(#3) | Feedback

Original PR: #663

[akanter]

• Remove the broken Stainless csharp target so spec PRs stop failing CI #671 👈 (View in Graphite)
• main

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[github-actions]

✱ Stainless preview builds for grid

This PR will update the grid SDKs with the following commit messages.

cli

chore(internal): regenerate SDK with no functional changes

go

chore(internal): regenerate SDK with no functional changes

kotlin

chore(internal): regenerate SDK with no functional changes

openapi

chore(internal): remove C# code samples from OpenAPI spec

php

chore(internal): regenerate SDK with no functional changes

python

chore(internal): regenerate SDK with no functional changes

ruby

chore(internal): regenerate SDK with no functional changes

typescript

docs(internal): remove C# examples and documentation

⚠️ grid-openapi studio · code

Your SDK build had at least one "warning" diagnostic.
generate ⚠️

✅ grid-ruby studio · code

Your SDK build had at least one "note" diagnostic.
generate ✅ → build ⏭️ → lint ✅ → test ✅

⚠️ grid-go studio · code

Your SDK build had a failure in the lint CI job, which is a regression from the base state.
generate ✅ → build ⏭️ → lint ❗ → test ❗

go get github.com/stainless-sdks/grid-go@a249a8a48b6efbf3da506590397d7ad8ebf4d641

⚠️ grid-kotlin studio · code

Your SDK build had a failure in the test CI job, which is a regression from the base state.
generate ⚠️ → build ⏭️ → lint ⏭️ → test ❗

⚠️ grid-typescript studio · code

Your SDK build had a failure in the lint CI job, which is a regression from the base state.
generate ✅ → build ✅ → lint ❗ → test ✅

npm install https://pkg.stainless.com/s/grid-typescript/b3ce136a2a58f4ddbafe7ee45787684adfc87553/dist.tar.gz

⚠️ grid-python studio · code

Your SDK build had a failure in the test CI job, which is a regression from the base state.
generate ✅ → build ⏭️ → lint ⏭️ → test ❗

✅ grid-php studio · code

Your SDK build had at least one "note" diagnostic.
generate ✅ → lint ✅ → test ✅

⚠️ grid-cli studio · code

Your SDK build had a failure in the test CI job, which is a regression from the base state.
generate ⚠️ → build ⏭️ → lint ⏭️ → test ❗

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Last updated: 2026-07-08 17:25:45 UTC

[ls-bolt]

📌 Bolt Status

2026-07-08 16:57:41 UTC — ⚡ Agent thundering-graviton-6(#6) started

---

Feedback

[greptile-apps]

Greptile Summary

Removes the csharp target from .stainless/stainless.yml to unblock spec-changing PRs whose CI preview check was always failing due to a Stainless upstream csharp build breakage. The target was already unpublished (production_repo: null, publish.nuget: false), so there is no impact on shipping artifacts.

• The six-line csharp block is replaced with a single comment documenting why it was omitted, making the intent clear for whoever re-adds it when the upstream issue is resolved.
• All other targets (typescript, kotlin, python, ruby, go, php, cli) are untouched.

Confidence Score: 5/5

Safe to merge — removes an unpublished, never-shipped target with no downstream consumers.

The change is a single 6-line deletion of an unpublished C# SDK target plus a replacement comment. Nothing published is affected, the remaining targets are untouched, and the PR author has provided end-to-end validation via probe #659 confirming the CI fix works correctly.

No files require special attention.

Important Files Changed

Filename	Overview
.stainless/stainless.yml	Removes the unpublished csharp target block and replaces it with an explanatory comment; no other targets or settings are touched.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Spec-changing PR opens] --> B{Run Stainless preview CI}
    B --> C[Build SDKs: head branch]
    B --> D[Build SDKs: base branch main]
    subgraph Before this PR
        C1[head: csharp build FAILS upstream Stainless breakage]
        D1[base: csharp build SUCCESS cached pre-breakage result]
        R1[head failure vs base success = regression detected → RED]
        C1 --> R1
        D1 --> R1
    end
    subgraph After this PR
        C2[head: no csharp target skipped]
        D2[base: no csharp target skipped]
        R2[head skipped vs base skipped = no regression → GREEN]
        C2 --> R2
        D2 --> R2
    end
    B --> C1
    B --> D1
    B --> C2
    B --> D2

Loading

%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
flowchart TD
    A[Spec-changing PR opens] --> B{Run Stainless preview CI}
    B --> C[Build SDKs: head branch]
    B --> D[Build SDKs: base branch main]
    subgraph Before this PR
        C1[head: csharp build FAILS upstream Stainless breakage]
        D1[base: csharp build SUCCESS cached pre-breakage result]
        R1[head failure vs base success = regression detected → RED]
        C1 --> R1
        D1 --> R1
    end
    subgraph After this PR
        C2[head: no csharp target skipped]
        D2[base: no csharp target skipped]
        R2[head skipped vs base skipped = no regression → GREEN]
        C2 --> R2
        D2 --> R2
    end
    B --> C1
    B --> D1
    B --> C2
    B --> D2

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_{Reviews (1): Last reviewed commit: "Remove the broken Stainless csharp targe..." | Re-trigger Greptile}