ci: opt into Node.js 24 for all GitHub Actions workflows

Set FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true at workflow level to
suppress Node.js 20 deprecation warnings. GitHub will enforce Node.js
24 as default from June 2, 2026.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: john-zhh

.github/workflows/ci.yml

@@ -5,6 +5,9 @@ on:
   push:
     branches: [main]
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 jobs:
   # Run tests in parallel
   unit-tests:

.github/workflows/e2e.yml

@@ -2,6 +2,9 @@ name: E2E Tests
 
 # Run E2E tests separately from main CI to avoid blocking PRs with flaky tests
 # These tests may be unstable due to timing, process management, or runner environment
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 on:
   # Manual trigger
   workflow_dispatch:

.github/workflows/pages.yml

@@ -6,6 +6,9 @@ on:
     paths: ['website/**']
   workflow_dispatch:
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 permissions:
   pages: write
   id-token: write

.github/workflows/release.yml

@@ -5,6 +5,9 @@ on:
     tags:
       - 'v*'
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 permissions:
   contents: write