7b4c1cd091
We use Gitea, not an abstract forge. Reword the pre-existing research and PRD docs: the generic "Forge-API gate"/"forge tokens" become "Git-host-API gate"/"Git-host tokens" (the gate still spans Gitea / GitHub / GitLab), "Git/forge history" -> "Git/Gitea history", and the KNOWN_FORGE_HOSTS / forge: manifest-field examples -> KNOWN_GIT_HOSTS / git_host:. Meaning preserved; only the word "forge" is dropped. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>