Default command delegation: `nib "..."` routes to `nib add`. Capture
bar parses grammar, creates entities. `nib ls` lists with date
grouping, tag filter, 48h default window. Display glyphs for all
entity types.
Extracts glyph prefix, @time anchors, #tags, and ^card suffixes from
raw input. Table-driven tests cover all grammar forms including edge
cases. 24 tests passing.
Foundation layer: entities table with card support, entity_tags join
table, WAL mode, busy_timeout, full CRUD operations including
promote/demote lifecycle and soft/hard delete. 33 tests passing.
lerko