Connect Live: viewer projection runtime and host-configured camera modes #105

Goal

Render the creator's feed as a local read-only Minecraft experience without logging the viewer into the underlying server.

Modes

• Follow POV.
• Orbit within a host-defined radius and projected data.
• Explore Projection only inside cached projected chunks.
• Configurable broadcast delay.

Invariants

• No server player entity, login, player-count impact, gameplay packets, commands, interaction, inventory, or simulation authority.
• Missing or unloaded space renders as an explicit projection boundary and never causes network fetch.
• Version mismatch fails before world creation with a clear explanation.
• Corrupt or missing deltas trigger bounded resync from a keyframe.
• Viewer UI makes read-only status and creator rules obvious.

Evidence

Real-client tests cover joining midstream, mode changes, projection boundaries, dimension changes, delay, corruption recovery, and clean exit.

Parent epic: #104