Drop devEngines block that broke the npm pack release gate

npm enforces devEngines.packageManager and refuses to run when the
declared manager is pnpm, which would have failed CI's release dry-run
and scripts/release.sh. The integrity-pinned pnpm 11 packageManager
entry stays.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: regenrek

CHANGELOG.md

@@ -14,7 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ### Changed
 
-- `packageManager` pinned to pnpm 11 (current stable, integrity-pinned) with a `devEngines.packageManager >= 11.0.0` requirement.
+- `packageManager` pinned to pnpm 11 (current stable, integrity-pinned). No `devEngines` block: npm enforces it and would refuse the `npm pack` release gate.
 
 ## [1.1.13] - 2026-06-10
 

package.json

@@ -22,12 +22,5 @@
   "engines": {
     "node": ">=18"
   },
-  "devEngines": {
-    "packageManager": {
-      "name": "pnpm",
-      "version": ">=11.0.0",
-      "onFail": "download"
-    }
-  },
   "packageManager": "pnpm@11.5.3+sha512.7ac1c919341c213a34dc0d02afb7143c5c26ac26ee8c4782deea821b8ac64d2134a081fd8941dae6e29bbb48f58dfc2b7fbceeccc07cb2f09d219d342a4969ed"
 }