ci: push bot-generated docs straight to main instead of opening PRs

[alexander-sei]

What

regenerate-llms.yml and sync-default-configs.yml now commit their generated output directly to main when something changes, instead of opening a fresh bot PR on every run.

• regenerate-llms → llms.txt / llms-full.txt
• sync-default-configs → node/node-operators.mdx

Each replaces the peter-evans/create-pull-request@v6 step with a guarded commit-and-push: it no-ops if nothing changed, commits as github-actions[bot], rebases on origin/main to absorb any concurrent push, then pushes to main. Permissions narrowed from contents: write + pull-requests: write down to just contents: write.

Why

These bot PRs (e.g. #10) were piling up requiring a manual merge and inflating the PR count. The content is fully machine-generated (plaintext llms.txt, marker-bounded TOML blocks), so a per-PR review gate added noise without much safety. Mintlify still redeploys on every push to main, and link-check still sweeps main daily via its cron, so nothing material is lost.

🤖 Generated with Claude Code

[cursor]

PR Summary

Medium Risk
Bypasses human review for automated commits to main; mitigated by no-op when unchanged, rebase-before-push, and fully generated outputs only.

Overview
Two scheduled doc automation workflows (regenerate-llms.yml, sync-default-configs.yml) no longer open bot PRs via peter-evans/create-pull-request@v6. When generated files differ, they commit as github-actions[bot], git pull --rebase --autostash origin main, then git push origin HEAD:main (no-op if the diff is empty). Workflow pull-requests: write permission was removed; only contents: write remains.

^{Reviewed by Cursor Bugbot for commit d6e6967. Bugbot is set up for automated code reviews on this repo. Configure here.}

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