chore: untrack auto-generated MSW worker and relax engines.node (#2714)

* chore: gitignore auto-generated mockServiceWorker.js

MSW postinstall auto-syncs public/mockServiceWorker.js via
package.json "msw.workerDirectory", so the update-msw.yml workflow
is redundant. Ignore the generated file and remove the workflow.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

* chore: add msw init to prepare script

pnpm hardlinks msw from its global store after the first build, so
msw's postinstall doesn't re-run on subsequent installs — new clones
hitting a warm store would not get public/mockServiceWorker.js.

Run `msw init public --save` in the prepare script so every
`pnpm install` regenerates the worker deterministically.

Normalize workerDirectory to "public" to keep `--save` idempotent
(passing "./public" triggers msw to append both forms).

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

* chore: use postinstall instead of prepare for msw init

postinstall runs on every install variant (including `pnpm add`),
while prepare can skip under `--production` or single-package adds.
postinstall also avoids a future conflict with tools that claim
prepare (e.g., Husky).

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

* fix

* fix

---------

Co-authored-by: Claude Opus 4.7 (1M context) <[email protected]>

Author: devmgn

.claude/rules/ci.md

@@ -7,7 +7,6 @@ paths:
 
 - `main` + feature branches, CI runs on non-main branches only
 - **lint.yml**: `pnpm check` — **test.yml**: `pnpm test:unit` — **build.yml**: `pnpm build` + upload `.next/`
-- **update-msw.yml**: Auto-update MSW worker (Renovate bot only)
 - Shared setup: ubuntu-24.04, 10min timeout, `pnpm/action-setup@v6`, Node.js from `mise.toml`, copies `.env.development` to `.env.local`
 - `upload-artifact` requires `include-hidden-files: true` for `.next/`
 - Action versions pinned by commit SHA

.github/workflows/update-msw.yml

@@ -236,3 +236,6 @@ scripts/actionlint
 
 # next-agents-md
 .next-docs/
+
+# MSW (auto-generated by postinstall via package.json "msw.workerDirectory")
+/public/mockServiceWorker.js

.gitignore

@@ -89,7 +89,7 @@
     "vitest": "4.1.4"
   },
   "engines": {
-    "node": "24.15.0"
+    "node": ">=24"
   },
   "packageManager": "[email protected]",
   "pnpm": {
@@ -105,6 +105,6 @@
     ]
   },
   "msw": {
-    "workerDirectory": "./public"
+    "workerDirectory": "public"
   }
 }