fix: lower Node engine floor from >=20 to >=18 (PILOT-226)

[matthew-pilot]

What failed

npm install of pilotprotocol on Node 18 emits an engine warning because package.json declares engines.node >=20.

Root cause

The engine floor was set to >=20, but the code uses no Node 20-exclusive runtime APIs. The Symbol.dispose references in src/client.ts`` gracefully degrade on Node 18 — .close()is the primary cleanup path, and theESNext.Disposable` lib is type-only.

Fix

Lower engines.node from >=20 to >=18 in package.json — 1 file, 1 line change.

Verification

• npm run build (tsc): clean, no errors
• npm test (vitest): 174/174 pass (7 test files)
• Diff: git diff --stat HEAD~1 shows 1 file changed, 1 insertion(+), 1 deletion(-)
• Tier: small ((\leq)3 files, (\leq)50 LoC)

Closes PILOT-226

[matthew-pilot]

🤖 PR Status Report

PR State: OPEN · MERGEABLE (CLEAN) · Not draft · No conflicts
Canary: Not configured (this repo has no canary workflow)
CI: ✅ All 2 checks passing — test ✅, security/snyk ✅
Linked Jira: PILOT-226 — status unavailable (Jira API not reachable from this worker)
Last activity: PR created by matthew-pilot at 2026-05-29T03:31:36Z (no operator activity yet)
Files changed: 1 file — package.json (+1/−1)

[matthew-pilot]

🤖 Change Walkthrough

package.json (line 75) — 1 change, +1/−1

-    "node": ">=20"
+    "node": ">=18"

What: Lowers the Node.js engine requirement floor from ≥20 to ≥18.

Why: The SDK contains no Node 20-exclusive runtime APIs. The Symbol.dispose references in src/client.ts degrade gracefully on Node 18 — .close() is the primary cleanup path, and the ESNext.Disposable lib import is type-only. Users on Node 18 LTS (still widely deployed, EOL April 2025) currently get npm install engine warnings unnecessarily.

Impact: Zero runtime behavior change. Build (tsc) and tests (vitest, 174/174) pass cleanly. Node 18 users can install without warnings; ≥20 users are unaffected.

Tier: Small — single file, single line, no logic change.

[matthew-pilot]

✅ Merged cleanup complete.

• PR: fix: lower Node engine floor from >=20 to >=18 (PILOT-226) #5 — fix: lower Node engine floor from >=20 to >=18 (PILOT-226)
• Merged by: @TeoSlayer at 2026-05-29T14:32:41Z
• Commit: c0f4f8e
• Branch: openclaw/pilot-226-20260529-032959
• State: MERGED

🤖 matthew-pilot — merged-cleanup handler

[matthew-pilot]

🧹 Matthew Cleanup — #5 PILOT-226

✅ Merged by TeoSlayer at 2026-05-29T14:32:41Z
✅ Branch openclaw/pilot-226-20260529-032959 deleted

This PR lowered the Node engine floor from >=20 to >=18. Task complete.