v0.1.0 — Initial MVP release

First tagged release of PixelHub.

• 2D pixel-art world (40x30, generated textures), server-authoritative movement at 20 ticks/s
• Proximity text chat, filtered server-side within 5 tiles
• Proximity voice via self-hosted LiveKit (audio-only, distance falloff)
• 148 tests, CI, Docker images published to GHCR, deployed via the homelab GitOps cluster