The broken `tea login list | awk '{print $NF}'` pattern extracted
the table border character instead of a token, causing pr-metadata.sh
to return empty fields (baseRefName, etc.) and breaking pr-merge.sh.
Centralizes get_remote_host and get_gitea_token in detect-platform.sh
with a 3-tier resolution: Mosaic credential loader (host→service
mapping) → GITEA_TOKEN env var → ~/.git-credentials file.
Removes duplicate local copies from 5 scripts that already source
detect-platform.sh.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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