fetch_recipe (SRC+REF/PR path) now read-only fetches published version tags from the public upstream
into the mirror clone, so the upgrade stage finds a previous published version (mirror PR branches
carry no tags → upgrade would skip). Guardrail-safe: only fetches tags, never pushes to the recipe
repo; plain git so the bot token isn't sent to upstream. Adds the 6 D10 recipes to the bridge
POLL_REPOS so !testme on their PRs triggers runs.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>