refactor(ts): fetch quarantine and flaky context through the Rust client

[kozlek]

@mergifyio/ci-core stops making these two calls itself. Pagination, the
Link header walk, cycle detection and status handling all move behind
CiApiClient, so they live once — in Rust, shared with pytest-mergify —
instead of being reimplemented per language. What stays on the TS side is the
fail-open mapping the plugins actually depend on: the client's tri-state
(value / dormant / rejection) collapses to an empty set or a null context, with
the reason logged.

The mode === "new" empty-baseline guard stays here too rather than moving
into the client. It is a policy about how a run behaves, not a wire concern:
with no baseline every test looks new and the whole suite would rerun. It
mirrors the Rust budget engine's should_run.

Plugins now build one client per run and pass it down, which doubles as the
test seam. MergifyReporterOptions.apiClient (vitest) and
RunGlobalSetupDeps.createClient (playwright) let the behavior suites drive
both features without a network or a .node binary — the Playwright
globalSetup tests move off stubbing global fetch, which the Rust client
bypasses entirely. The .node-less path also gets real coverage now: no client
means the features stay off rather than the run breaking.

Deleted with the duplicated code: the TS pagination and HTTP-status tests,
which the Rust client's own suite covers.

One behavior change worth noting: a 402 on the flaky-detection context now logs
the client's "Mergify API returned HTTP 402" instead of "Flaky detection not
available (no subscription)". The fail-open outcome is identical; only the
wording differs.

Trace upload still goes through the OTLP exporter — that swap is the next
commit.

Related to MRGFY-8439

Co-Authored-By: Claude Opus 5 (1M context) noreply@anthropic.com

[kozlek]

This pull request is part of a Mergify stack:

#	Pull Request	Link
1	refactor(ts): fetch quarantine and flaky context through the Rust client	#75	👈
2	refactor(ts): upload traces through the Rust client	#76
3	refactor(ts): assemble spans directly, dropping the OpenTelemetry SDK	#77

[mergify]

Merge Protections

🟢 All 6 merge protections satisfied — ready to merge.

Show 6 satisfied protections

🟢 🤖 Continuous Integration

• all of:
  • check-success=ci-gate

🟢 👀 Review Requirements

• any of:
  • #approved-reviews-by>=2
  • author = dependabot[bot]
  • author = mergify-ci-bot
  • author = renovate[bot]

🟢 Enforce conventional commit

Make sure that we follow https://www.conventionalcommits.org/en/v1.0.0/

• title ~= ^(fix|feat|internal|docs|style|refactor|perf|test|build|ci|chore|revert|ui)(?:\(.+\))?!?:

🟢 🔎 Reviews

• #changes-requested-reviews-by = 0
• #review-requested = 0
• #review-threads-unresolved = 0

🟢 📕 PR description

• body ~= (?ms:.{48,})

🟢 🚦 Auto-queue

When all merge protections are satisfied, this pull request will be queued automatically.

[kozlek]

Revision history

#	Type	Changes	Reason	Date
1	initial	ae29c34		2026-08-10 12:12 UTC
2	rebase	ae29c34 → fd11fc9 (rebase only)		2026-08-10 12:12 UTC

[kozlek]

@Mergifyio queue

[mergify]

Merge Queue Status

• ✅ Entered queue — 2026-08-11 15:27 UTC · Rule: default · triggered by @kozlek with the @mergifyio queue command
• ✅ Checks skipped · PR is already up-to-date
• ✅ Merged — 2026-08-11 15:28 UTC · at fd11fc99936f88c78a9ff1e4cf62c1370cef8532 · squash

This pull request spent 30 seconds in the queue, including 2 seconds running CI.

Required conditions to merge

• all of [🛡 Merge Protections rule Enforce conventional commit]:
  • title ~= ^(fix|feat|internal|docs|style|refactor|perf|test|build|ci|chore|revert|ui)(?:\(.+\))?!?:
    • refactor(ts): fetch quarantine and flaky context through the Rust client #75
• all of [🛡 Merge Protections rule 👀 Review Requirements]:
  • any of:
    • #approved-reviews-by>=2
      • refactor(ts): fetch quarantine and flaky context through the Rust client #75
    • author = dependabot[bot]
      • refactor(ts): fetch quarantine and flaky context through the Rust client #75
    • author = mergify-ci-bot
      • refactor(ts): fetch quarantine and flaky context through the Rust client #75
    • author = renovate[bot]
      • refactor(ts): fetch quarantine and flaky context through the Rust client #75
• all of [🛡 Merge Protections rule 📕 PR description]:
  • body ~= (?ms:.{48,})
    • refactor(ts): fetch quarantine and flaky context through the Rust client #75
• all of [🛡 Merge Protections rule 🔎 Reviews]:
  • #changes-requested-reviews-by = 0
    • refactor(ts): fetch quarantine and flaky context through the Rust client #75
  • #review-requested = 0
    • refactor(ts): fetch quarantine and flaky context through the Rust client #75
  • #review-threads-unresolved = 0
    • refactor(ts): fetch quarantine and flaky context through the Rust client #75
• all of [🛡 Merge Protections rule 🤖 Continuous Integration]:
  • all of:
    • check-success=ci-gate