2.4.12

Improved

• Group :sessions and the resume picker by harness, with model · topic · age
  rows under each header and keyboard navigation that skips header rows.
• Replay the full restored chat transcript into ConversationLog on
  :sessions switch / :resume, including best-effort PiPy external JSONL.
• Show harness · provider/model · session short label in the status bar after
  resume.
• Add :sessions rename <id-or-name> <title> and support :resume latest
  (or a single listed session) for low-friction switching.

Fixed

• Dual-write BYOK HarnessSpec and PiPy sessions into SessionManager so
  :sessions lists them after disconnect, with human labels such as
  PiPy · gpt-4.1 · refactor auth · 2h ago.
• Make :sessions switch / :resume restore harness, provider/model, working
  directory, and the same harness or PiPy transcript. Missing API keys or
  harnesses fail with a clear message instead of a blank session.
• Make :pipy resume <n|path> reopen a prior PiPy session into the live chat
  and register it for :sessions.