feat: add title and description fields to capture grammar

Implement | prefix for titles and // separator for descriptions
across the full stack: parser, schema, API, CLI, and web frontend.

- Parser: line-aware extraction for |title, |title // desc,
  // leading desc, body // inline desc. URL-safe (skips :// lines).
  Modifiers (#tag, @time, ^card) extracted from all segments.
- Schema: ALTER TABLE migration adds title, description columns
- DB: Entity/EntityUpdate structs, all CRUD queries updated
- API: title/description on create/update/response, body validation
  relaxed (title-only entries valid)
- CLI: shows title as scan label when present
- Web: parseInput mirrors Go parser, list shows title, detail pane
  renders title + description with double-click inline editing
- Tests: 10 new cases (grammar, entity, API) — 71 total, all pass

cmd/add.go

@@ -32,9 +32,11 @@ func runAdd(_ *cobra.Command, args []string) error {
 	defer store.Close()
 
 	e := &db.Entity{
-		Body:  parsed.Body,
-		Glyph: db.Glyph(parsed.Glyph),
-		Tags:  parsed.Tags,
+		Body:        parsed.Body,
+		Title:       parsed.Title,
+		Description: parsed.Description,
+		Glyph:       db.Glyph(parsed.Glyph),
+		Tags:        parsed.Tags,
 	}
 	if parsed.TimeAnchor != nil {
 		e.TimeAnchor = parsed.TimeAnchor
@@ -53,12 +55,16 @@ func runAdd(_ *cobra.Command, args []string) error {
 
 	var parts []string
 	parts = append(parts, glyph)
-	parts = append(parts, " "+e.Body)
+	if e.Title != nil {
+		parts = append(parts, "  "+*e.Title)
+	} else {
+		parts = append(parts, "  "+e.Body)
+	}
 	if e.TimeAnchor != nil {
-		parts = append(parts, " @"+*e.TimeAnchor)
+		parts = append(parts, "  @"+*e.TimeAnchor)
 	}
 	for _, tag := range e.Tags {
-		parts = append(parts, " #"+tag)
+		parts = append(parts, "  #"+tag)
 	}
 	parts = append(parts, "  ["+shortID+"]")
 	if e.CardType != nil {