1.0.27+4371

What's Changed

• feat(plaza): walkable district with frontier plaza, billboards, beacons and flights (M1–M3) + handover by @matthiasn in #4122
• fix(plaza): flights turn smoothly — direction blends, arrival holds the road, diagonal joins by @matthiasn in #4128
• refactor(plaza): simplify the plaza — shared frame helpers, scene builders, one capture scheduler by @matthiasn in #4131
• fix(projects): harden membership and agent lifecycle integrity by @matthiasn in #4129
• feat(projects): refine the workspace and unify agent controls by @matthiasn in #4130
• chore(release): 1.0.27 by @matthiasn in #4132

Full Changelog: 1.0.26+4370...1.0.27+4371