Replace raw http.Client calls with go-forge typed API:
- prep.go: getIssueBody via forge.Issues.Get, pullWikiContent
via forge.Wiki.ListPages/GetPage
- pr.go: forgeCreatePR via forge.Pulls.Create, commentOnIssue
via forge.Issues.CreateComment, listRepoPRs via forge.Pulls.ListAll
- scan.go: listOrgRepos via forge.Repos.ListOrgRepos
Eliminates manual JSON marshalling, auth headers, pagination loops,
and anonymous struct declarations. One Forge client, one auth,
type-safe responses.
Co-Authored-By: Virgil <virgil@lethean.io>