progress-hygiene-rules

Progress file hard constraints. MUST maintain exactly one progress root per project per the location matrix, valid frontmatter with absolute dates on every progress doc, NN- numeric prefix only for time-ordered children in progress/ and research/ trees (never skill references), archive when files exceed ~200 lines preserving content verbatim, relative paths in all cross-file references. NEVER place progress under .claude/, maintain two progress files with mutual references, use relative dates, duplicate child content into parent, summarize archived content, or discard completed history. Activates on any progress file edit, migration, or new-session handoff. MUST read SKILL.md BEFORE editing, creating, moving, or archiving any progress or research tree file.