v2.28.5

[2.28.5] — 2026-07-31

Fixed

• Renamed the PR-authoring GitHub App reference to its current slug. The App
  was renamed devflow-autopilot → prflow-implementer (PRFlow (Implementer);
  the app id is unchanged at 3102164) and the old slug now 404s, so every
  workflow comment, setup instruction, and architecture note naming it pointed at
  an identity a reader could not look up. The DEVFLOW_APP_ID variable and
  secret names are deliberately unchanged — they are configuration identifiers,
  not App identity — as are the workspace-path grants in .devflow/config.json
  (repo-name, re-anchored onto the live $GITHUB_WORKSPACE) and the dated
  CHANGELOG.md records.