build(ts-native): expose the shared API client on the napi binding

[kozlek]

Adds CiApiClient to @mergifyio/ci-native, over crates/mergify-ci-api —
the quarantine and flaky-detection fetches plus the OTLP trace upload, so the
TS packages can stop reimplementing them. Mirrors the PyO3 CiApiClient the
pytest wheel already bundles.

Unlike detection's JSON-string surface, the returns are typed
#[napi(object)] structs: these are closed, known shapes, so the generated
.d.ts is the contract rather than a hand-written TS interface.
FlakyDetectionContext keeps snake_case field names via per-field js_name
because it is destined to be @mergifyio/ci-core's public type — a reporter
option and a Playwright state-file field — and the keys are the API's own wire
contract, shared with pytest-mergify.

The boundary carries plain data only, never live OpenTelemetry objects: span
ids are the lowercase hex strings the JS SDK already exposes, and timestamps
are bigint because nanoseconds since the epoch exceed what a JS number
holds exactly. Attribute values arrive as boolean | number | string; an
integral number becomes an OTLP intValue and a fractional one a
doubleValue, reproducing the split @opentelemetry/otlp-transformer made so
the wire bytes stay identical.

napi gains async (its tokio runtime drives the client, surfacing the calls as
Promises) and napi6 (which gates BigInt). Both sit far below the N-API 9
that Node >=22 ships.

No TS consumer yet — adoption lands in the commits above this one.

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	build(ts-native): expose the shared API client on the napi binding	#74	👈
2	refactor(ts): fetch quarantine and flaky context through the Rust client	#75
3	refactor(ts): upload traces through the Rust client	#76
4	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.

[mergify]

Merge Queue Status

• ✅ Entered queue — 2026-08-10 12:04 UTC · Rule: default · triggered by merge protections
• ✅ Checks passed · on draft merge queue: checking main (78d1394) and #74 together #81
• ✅ Merged — 2026-08-10 12:07 UTC · at 3cc101ac29a1441b78c37b8bd93211d1ae228acc · squash

This pull request spent 3 minutes 12 seconds in the queue, including 2 minutes 49 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)(?:\(.+\))?!?:
    • build(ts-native): expose the shared API client on the napi binding #74
• all of [🛡 Merge Protections rule 👀 Review Requirements]:
  • any of:
    • #approved-reviews-by>=2
      • build(ts-native): expose the shared API client on the napi binding #74
    • author = dependabot[bot]
      • build(ts-native): expose the shared API client on the napi binding #74
    • author = mergify-ci-bot
      • build(ts-native): expose the shared API client on the napi binding #74
    • author = renovate[bot]
      • build(ts-native): expose the shared API client on the napi binding #74
• all of [🛡 Merge Protections rule 📕 PR description]:
  • body ~= (?ms:.{48,})
    • build(ts-native): expose the shared API client on the napi binding #74
• all of [🛡 Merge Protections rule 🔎 Reviews]:
  • #changes-requested-reviews-by = 0
    • build(ts-native): expose the shared API client on the napi binding #74
  • #review-requested = 0
    • build(ts-native): expose the shared API client on the napi binding #74
  • #review-threads-unresolved = 0
    • build(ts-native): expose the shared API client on the napi binding #74
• all of [🛡 Merge Protections rule 🤖 Continuous Integration]:
  • all of:
    • check-success=ci-gate