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

internal/db/entities.go

@@ -49,6 +49,8 @@ type Entity struct {
 	CreatedAt   time.Time
 	ModifiedAt  time.Time
 	Body        string
+	Title       *string
+	Description *string
 	Glyph       Glyph
 	TimeAnchor  *string
 	CompletedAt *time.Time
@@ -85,14 +87,16 @@ func DefaultListParams() ListParams {
 }
 
 type EntityUpdate struct {
-	Body       *string
-	Glyph      *Glyph
-	TimeAnchor *string
-	ClearTime  bool
-	Pinned     *bool
-	CardType   *CardType
-	CardData   *string
-	Tags       *[]string
+	Body        *string
+	Title       *string
+	Description *string
+	Glyph       *Glyph
+	TimeAnchor  *string
+	ClearTime   bool
+	Pinned      *bool
+	CardType    *CardType
+	CardData    *string
+	Tags        *[]string
 }
 
 func (s *Store) Create(e *Entity) error {
@@ -111,13 +115,16 @@ func (s *Store) Create(e *Entity) error {
 	defer tx.Rollback()
 
 	_, err = tx.Exec(`
-		INSERT INTO entities (id, created_at, modified_at, body, glyph, time_anchor,
-			completed_at, pinned, deleted_at, card_type, card_data, use_count, last_used_at)
-		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+		INSERT INTO entities (id, created_at, modified_at, body, title, description,
+			glyph, time_anchor, completed_at, pinned, deleted_at,
+			card_type, card_data, use_count, last_used_at)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
 		e.ID,
 		e.CreatedAt.Format(time.RFC3339),
 		e.ModifiedAt.Format(time.RFC3339),
 		e.Body,
+		e.Title,
+		e.Description,
 		string(e.Glyph),
 		e.TimeAnchor,
 		formatTimePtr(e.CompletedAt),
@@ -144,14 +151,17 @@ func (s *Store) Get(id string) (*Entity, error) {
 	var createdAt, modifiedAt string
 	var completedAt, deletedAt, lastUsedAt sql.NullString
 	var timeAnchor, cardType, cardData sql.NullString
+	var title, description sql.NullString
 	var pinned int
 
 	err := s.db.QueryRow(`
-		SELECT id, created_at, modified_at, body, glyph, time_anchor,
-			completed_at, pinned, deleted_at, card_type, card_data, use_count, last_used_at
+		SELECT id, created_at, modified_at, body, title, description,
+			glyph, time_anchor, completed_at, pinned, deleted_at,
+			card_type, card_data, use_count, last_used_at
 		FROM entities WHERE id = ?`, id).Scan(
-		&e.ID, &createdAt, &modifiedAt, &e.Body, &e.Glyph, &timeAnchor,
-		&completedAt, &pinned, &deletedAt, &cardType, &cardData, &e.UseCount, &lastUsedAt,
+		&e.ID, &createdAt, &modifiedAt, &e.Body, &title, &description,
+		&e.Glyph, &timeAnchor, &completedAt, &pinned, &deletedAt,
+		&cardType, &cardData, &e.UseCount, &lastUsedAt,
 	)
 	if err == sql.ErrNoRows {
 		return nil, ErrNotFound
@@ -162,6 +172,8 @@ func (s *Store) Get(id string) (*Entity, error) {
 
 	e.CreatedAt, _ = time.Parse(time.RFC3339, createdAt)
 	e.ModifiedAt, _ = time.Parse(time.RFC3339, modifiedAt)
+	e.Title = nullToPtr(title)
+	e.Description = nullToPtr(description)
 	e.TimeAnchor = nullToPtr(timeAnchor)
 	e.CompletedAt = parseTimePtr(completedAt)
 	e.Pinned = pinned != 0
@@ -234,9 +246,9 @@ func (s *Store) List(params ListParams) ([]*Entity, error) {
 	}
 
 	query := fmt.Sprintf(`
-		SELECT e.id, e.created_at, e.modified_at, e.body, e.glyph, e.time_anchor,
-			e.completed_at, e.pinned, e.deleted_at, e.card_type, e.card_data,
-			e.use_count, e.last_used_at
+		SELECT e.id, e.created_at, e.modified_at, e.body, e.title, e.description,
+			e.glyph, e.time_anchor, e.completed_at, e.pinned, e.deleted_at,
+			e.card_type, e.card_data, e.use_count, e.last_used_at
 		FROM entities e
 		%s
 		ORDER BY %s %s
@@ -256,18 +268,21 @@ func (s *Store) List(params ListParams) ([]*Entity, error) {
 		var createdAt, modifiedAt string
 		var completedAt, deletedAt, lastUsedAt sql.NullString
 		var timeAnchor, cardType, cardData sql.NullString
+		var title, description sql.NullString
 		var pinned int
 
 		if err := rows.Scan(
-			&e.ID, &createdAt, &modifiedAt, &e.Body, &e.Glyph, &timeAnchor,
-			&completedAt, &pinned, &deletedAt, &cardType, &cardData,
-			&e.UseCount, &lastUsedAt,
+			&e.ID, &createdAt, &modifiedAt, &e.Body, &title, &description,
+			&e.Glyph, &timeAnchor, &completedAt, &pinned, &deletedAt,
+			&cardType, &cardData, &e.UseCount, &lastUsedAt,
 		); err != nil {
 			return nil, err
 		}
 
 		e.CreatedAt, _ = time.Parse(time.RFC3339, createdAt)
 		e.ModifiedAt, _ = time.Parse(time.RFC3339, modifiedAt)
+		e.Title = nullToPtr(title)
+		e.Description = nullToPtr(description)
 		e.TimeAnchor = nullToPtr(timeAnchor)
 		e.CompletedAt = parseTimePtr(completedAt)
 		e.Pinned = pinned != 0
@@ -308,6 +323,14 @@ func (s *Store) Update(id string, u *EntityUpdate) error {
 		sets = append(sets, "body = ?")
 		args = append(args, *u.Body)
 	}
+	if u.Title != nil {
+		sets = append(sets, "title = ?")
+		args = append(args, *u.Title)
+	}
+	if u.Description != nil {
+		sets = append(sets, "description = ?")
+		args = append(args, *u.Description)
+	}
 	if u.Glyph != nil {
 		sets = append(sets, "glyph = ?")
 		args = append(args, string(*u.Glyph))