Aleksei Sviridkin 58d61d5652 fix(ci): build api-gate detector from base tip when merge base predates it (#3193)
## What this PR does

The `API Review Gate` required check builds the `cmd/api-gate` detector
from the PR's merge-base checkout so a PR cannot neuter the detector by
editing its own code. When a PR's merge base predates the commit that
introduced the gate (`fa871249c`), `cmd/api-gate` is absent from both
the merge base and the equally old head, so the head fallback also fails
to build and the check errors out before evaluating any API content.
This red-blocks every open PR whose merge base is older than the gate,
and neither a re-run nor an approving review clears it.

This adds the base branch tip (`origin/<base>`) as an intermediate build
source: prefer the merge-base checkout, fall back to the base tip when
the merge base lacks the tool, and bootstrap from the head only while
the tool exists nowhere on the base branch yet. The base tip is a
protected, non-PR-authored branch, so it preserves the "analyze the head
as data, not code" property. The API surface is still diffed against the
merge base; only where the detector binary is compiled changes. This
unblocks the pre-gate backlog without forcing every affected PR to
rebase.

The selection is kept inline in the workflow rather than in a helper
script: a helper would be read from the untrusted PR head, which both
reintroduces the failure for heads that predate the helper and lets a PR
steer the selection away from the trusted build.

Closes #3192

### Screenshots

N/A — CI-only change, no user-facing UI.

### Release note

```release-note
fix(ci): API Review Gate now builds its detector from the base branch tip when the PR merge base predates the gate, so pre-gate PRs stop failing the check without needing a rebase.
```
2026-07-03 18:50:02 +03:00
2025-10-08 09:43:34 +05:00
2025-04-01 18:48:14 +02:00
2024-02-08 12:04:32 +01:00

Cozystack Cozystack

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Cozystack

Cozystack is a free platform and framework for building clouds.

Cozystack is a CNCF Sandbox Level Project that was originally built and sponsored by Ænix.

With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.

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