repo-template + apply common ruleset to all ExtraToast repos

[jorisjonkers-dev-agents]

Objective: every repo is bootstrapped from ExtraToast/repo-template and carries the common ruleset requiring Pipeline Complete.

Work:

• Merge repo-template bootstrap (chore: bootstrap repo template with org conventions repo-template#1)
• scripts/apply-ruleset.sh against each ExtraToast repo (needs admin)
• Confirm Pipeline Complete is the required check everywhere

Part of #605.