Prepare Paperclip PR

The standard Paperclip procedure for turning branch work into a reviewed, green pull request against paperclipai/paperclip master. Apply it once per PR (if a task splits a branch into several PRs, run the whole procedure for each one).

0. Preconditions — worktree safety

• Do all PR work in a git worktree on a dedicated branch. The main ~/paperclip checkout typically runs the live Paperclip server — never check out branches there. If you are already on a worktree/branch, verify it (git rev-parse --git-dir, git branch --show-current) and proceed.
• If the main checkout is unexpectedly off master, fix that first without losing work (usually: move that branch's work into a worktree).
• Confirm which remote/ref you are targeting (normally master on the paperclipai/paperclip repo; the task may name a specific remote such as origin or public-gh).

1. Commit everything — lose no work