Add live agent views and improve Codex monitoring

internal/store/postgres/query.go

@@ -18,6 +18,7 @@ type EventsFilter struct {
 	Limit     int
 	EventType string
 	Framework string
+	ClientID  string
 }
 
 func (d *DB) ListRecentEvents(ctx context.Context, f EventsFilter) ([]EventRow, error) {
@@ -42,6 +43,11 @@ func (d *DB) ListRecentEvents(ctx context.Context, f EventsFilter) ([]EventRow,
 		args = append(args, f.Framework)
 		argN++
 	}
+	if f.ClientID != "" {
+		query += fmt.Sprintf(" AND client_id = $%d", argN)
+		args = append(args, f.ClientID)
+		argN++
+	}
 
 	query += fmt.Sprintf(" ORDER BY ts DESC LIMIT $%d", argN)
 	args = append(args, f.Limit)
@@ -62,3 +68,36 @@ func (d *DB) ListRecentEvents(ctx context.Context, f EventsFilter) ([]EventRow,
 	}
 	return out, rows.Err()
 }
+
+func (d *DB) ListAgentLiveEvents(ctx context.Context, framework, clientID string, limit int) ([]EventRow, error) {
+	if limit <= 0 {
+		limit = 200
+	}
+	if limit > 1000 {
+		limit = 1000
+	}
+
+	rows, err := d.sql.QueryContext(ctx, `
+		SELECT event_id, ts, type, payload
+		FROM events
+		WHERE source_framework = $1
+		  AND client_id = $2
+		  AND type IN ('session.start', 'session.end', 'run.start', 'run.end', 'span.start', 'span.end', 'error')
+		ORDER BY ts DESC
+		LIMIT $3
+	`, framework, clientID, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []EventRow
+	for rows.Next() {
+		var r EventRow
+		if err := rows.Scan(&r.EventID, &r.TS, &r.Type, &r.Payload); err != nil {
+			return nil, err
+		}
+		out = append(out, r)
+	}
+	return out, rows.Err()
+}