D762 — map_delete takes force to remove loose non-Markdown files, not a deleting lint repair

Decision. map_delete accepts force: true, which deletes the regular non-.md files directly under the map directory together with the map and returns them as removed_files. Concepts, subdirectories (expanded concepts, asset-only directories, sub-maps), non-scaffold .md files and symlinks still refuse, with or without force. The commit subject lists the removed files.

Why. A loose file such as x/schema.png is reachable by no tool: asset_* resolve only files owned by an expanded concept and artifact_delete only root artifacts, so the only way out was a manual delete on disk. The invariant of D88 (map_delete never removes concepts or directories) is kept: force widens it only to files no concept owns.

Alternatives rejected. - A lint with a deleting kb_repair fix: every repair so far rewrites or scaffolds, and doctor auto-repair assumes repairs never delete user files. - Letting force remove subdirectories: it would delete expanded concepts and assets silently, which D88 forbids.

Consequences. DeleteMap classifies a loose file by d.Type().IsRegular() directly under the map, so a symlink is never followed and never counted as loose. The error offers force only when every remaining entry is loose.