preset-setuplisted

# /specseal:preset-setup — reviewed CLAUDE.md merge Merge the preset's CLAUDE.md block into the user's global `~/.claude/CLAUDE.md` (or the target the user names). Unlike `install.sh`, which only inserts the marker block mechanically, this command deduplicates — and every deletion goes through the user first. ## Procedure 0. **Ask the scope first** (unless the user already said): global (`~/.claude/CLAUDE.md` — every project on this machine) or this project (`./CLAUDE.md` — committed, so teammates receive it via git). Recommend project scope for team repos, global for personal machines. Warn if the preset block already exists in the *other* scope — both files load, so the block should live in exactly one. 1. **Back up.** Copy the target file to `CLAUDE.md.bak` before touching anything. If the target does not exist, just write the preset block and stop. 2. **Read both.** The preset block is the content between `<!-- specseal:start -->` and `<!-- specseal:end -->` in this plugin's CLAUDE.md. Read the user's file in full. 3. **Classify each overlap** between the user's existing content (outside any preset markers) and the preset block: | Finding | Proposal | |---|---| | Exact duplicate — same rule, same meaning | Propose removing the user's copy (the block now owns it) | | Partial overlap — user's rule is more specific | Propose **keeping the user's rule** and note it overrides the block's general form | | Conflict — different val