Mnemonica: uninstall

Remove exactly what Mnemonica added to a project — never more. This mirrors setup's non-destructive install in reverse: the CLAUDE.md block is safe to remove without asking (removing what this plugin itself added is the same risk category as adding it), but knowledge/ holds real, accumulated documentation that took real reconciliation work to build, so deleting it follows the same "ask before deleting" rule as any other module deletion in knowledge-conventions.md — do not treat uninstall as a blanket exemption from that rule.

If the user's invocation includes extra wording (for example, "uninstall but keep the knowledge folder"), treat it as answering Step 2 in advance rather than asking again — but do not let it skip Step 1's confirmation-free block removal into something riskier than described here, and do not let it turn into deleting anything else in the project.

Step 1: Remove the CLAUDE.md block

Run ${CLAUDE_PLUGIN_ROOT}/scripts/remove-mnemonica-block.sh <project-root>.

• Exit 2 (NO_CLAUDE_MD) or 3 (NO_BLOCK): there is nothing installed to remove here. Tell the user and stop — do not proceed to Step 2 or touch knowledge/ in this case, since there is no evidence Mnemonica actually manages this project's knowledge/ folder (it may predate Mnemonica, or belong to something else entirely).
• Exit 0 (BLOCK_REMOVED or FILE_REMOVED): the block is gone; if it was the only content in .claude/CLAUDE.md, the file itself was removed too. Every other line in the file, if any remained, is untouched — verify this by rereading the file rather than assuming the script did the right thing.

Step 2: Ask about knowledge/

Ask the user, explicitly, whether to also delete the knowledge/ folder and its contents. Do not delete it without an answer, and do not default to deleting it. Mention how many module files are in there so the decision is informed (losing N module files' worth of documentation is a bigger ask than losing one). If the user declines or doesn't say, leave knowledge/ exactly as it is — an orphaned knowledge/ folder with no CLAUDE.md pointer to it is harmless clutter, not a broken state, and is trivial to remove by hand later.

Step 3: Leave everything else alone

Never touch README.md — it was never Mnemonica's to manage in the first place. Never touch any part of .claude/CLAUDE.md outside what Step 1 already removed.

Step 4: Report

State plainly what was removed (the block, the file if it was removed entirely, knowledge/ if the user confirmed) and what was left in place, so there's no ambiguity about the project's state afterward.