[jsshin2022]

What happened on 10/25

1. Show the team's live activity, open on the track map, and call levels Level 0 to 4 #71 and Load the GA script from the hub stream's Google tag #72 merged at 12:46, and the deploy pushed gh-pages.
2. A minute later, a bulk branch cleanup deleted gh-pages along with the merged branches.
3. GitHub Pages lost its source branch, turned itself off, and the whole site returned 404.
4. Re-running the deploy from the Actions tab (workflow_dispatch) then failed at the stats step: GitHub returned 403 for one of the stats calls, and the deploy stopped there.

The site is back: I re-ran the push deploy to recreate gh-pages and set Settings → Pages to gh-pages / root again.

This PR keeps the same thing from taking the site down again.

Changes

• GA, second half of the Load the GA script from the hub stream's Google tag #72 fix: ga.js now configures the Google tag (G-BEBVKYH8HL), which is the snippet GA's install guide gives for the hub stream.
  • After Load the GA script from the hub stream's Google tag #72 the script loaded, but with only G-C5V0X2SGD3 configured gtag kept waiting on that ID's missing script and still sent nothing.
  • I checked on the live hub: with the tag configured, a test event (ga_check3), the page view and session_start appear in the hub property's realtime report. Before that, the deployed page sent nothing.
• update_stats.py: a refused or failed GitHub call keeps last week's stats.json and exits normally, so the rest of the deploy still runs.
• Asset versions:
  • Each deploy appends ?v=<commit> to every assets/js/*.js and assets/css/*.css URL in the published HTML. This covers the home page, article, game, lab, 404 and Builder pages.
  • Pages serves files with a ten-minute cache. Without the version, a browser can run the previous deploy's scripts against the new HTML for up to ten minutes. That happened today right after the merge: the new page loaded the old hub.js and ga.js.
• CONTRIBUTING: a 배포 section says not to delete gh-pages.

Checked

• I ran the versioning step on a local copy of the site. Every script and style URL gets ?v=, including the /assets/... paths on Builder pages.
• The workflow YAML parses.

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