Weekly backup main → backups/main #2

	name: Weekly backup main → backups/main

	# Mirrors the current tip of `main` onto `backups/main` so we always have
	# a one-PR-away restore point if main gets corrupted by a Sync-fork
	# misclick, a bad merge, or anything else surprising.
	#
	# Why `backups/main` and not `main-backup`:
	# the repo ruleset on `linways/lwchat` covers `main` AND `main-backup`
	# (likely via a `main*` pattern), enforcing "Changes must be made through
	# a pull request". The default GITHUB_TOKEN cannot bypass that rule, so
	# the first attempt at this job (run #1) failed with GH013. The
	# `backups/*` namespace is outside the rule, so the action token can
	# write there directly.
	#
	# Schedule: every Saturday 22:00 IST (= 16:30 UTC, day-of-week 6).
	# Cron is in UTC; IST = UTC+5:30, so 22:00 IST → 16:30 UTC.

	on:
	schedule:
	- cron: "30 16 * * 6"
	workflow_dispatch: # also allow manual runs from the Actions tab

	jobs:
	mirror:
	runs-on: ubuntu-latest
	permissions:
	contents: write # needed to push to backups/main
	steps:
	- name: Checkout main
	uses: actions/checkout@v4
	with:
	ref: main
	fetch-depth: 0 # full history so the push lands cleanly

	- name: Force-push main → backups/main
	run: \|
	set -euo pipefail
	echo "Mirroring $(git rev-parse HEAD) to refs/heads/backups/main"
	git push --force origin HEAD:refs/heads/backups/main

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