fix(parser): align Go and JS parsers with capture grammar spec

Kind prefixes now follow the canonical grammar: `-` for todo,
`@time` for event, `!time` for reminder. Removed `*`/`◇`/`▸`
as capture aliases (display-layer only). Added `\` escape prefix,
`?` query mode, `!pin` flag extraction, `##word` hash escape,
and tag lowercasing. Both parsers produce identical results.

cmd/add.go

@@ -37,6 +37,7 @@ func runAdd(_ *cobra.Command, args []string) error {
 		Description: parsed.Description,
 		Glyph:       db.Glyph(parsed.Glyph),
 		Tags:        parsed.Tags,
+		Pinned:      parsed.Pin,
 	}
 	if parsed.TimeAnchor != nil {
 		e.TimeAnchor = parsed.TimeAnchor