* test(forge): live-GitLab contract suite — verified against gitlab.com
Mirror of the Gitea live suite for GitLabProvider (forge Phase 3):
env-gated (ROBOCO_GITLAB_E2E_URL/_TOKEN + ROBOCO_E2E_SMOKE=1),
self-seeding — creates a throwaway private project under the token's
namespace, pushes real commits, and drives the provider end to end: MR
open → duplicate 409→422 reshape → native source/target filter →
GitHub-shape adaptation (iid→number, head/base, merged) → per-file diff
reassembly → note review → commit-status→check_runs reshape → squash
merge with a mergeability-settle retry (GitLab computes merge status
asynchronously) → branch delete → release (shaped html_url) → the
oauth2 Basic-auth git-CLI claim. Project deleted afterwards.
Green against gitlab.com on first full run — no adapter fixes needed
(the settle-retry is the one live-behavior accommodation). Requires a
token with Project: Create (classic `api` scope, or fine-grained with
project create + API read/write).
* fix(tests): split None-guarded assert so its message can't dereference None
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Co-authored-by: Renn F <rennf93@users.noreply.github.com>
