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.

web/style.css

@@ -356,6 +356,7 @@ main {
 .glyph-note { color: var(--muted); }
 .glyph-todo { color: var(--todo); }
 .glyph-event { color: var(--event); }
+.glyph-reminder { color: var(--remind); }
 .glyph-snippet { color: var(--accent); }
 .glyph-template { color: var(--lineage); }
 .glyph-checklist { color: var(--remind); }