Barrett Ruth 0522cf3263 feat(init): multi-level undo, quickfix due, BufEnter reload ... Problem: undo was single-level with shallow references; no way to query due/overdue tasks via quickfix; two instances sharing tasks.json would diverge silently. Solution: replace _undo_state with _undo_states[] (cap 20, deep copies via store.snapshot()); add M.due() which populates the quickfix list with overdue/due-today tasks; add BufEnter autocmd that reloads from disk when the buffer is unmodified; expand show_help() with folds, :Pending due, relative date syntax, PendingOverdue, and empty-input date clearing.		2026-02-24 18:44:13 -05:00
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pending	feat(init): multi-level undo, quickfix due, BufEnter reload	2026-02-24 18:44:13 -05:00