v0.3.0 — world reads, consumers process, tooltips

Real world reads through Horizon internals (world.block + facts registry), consumer machines (drill/crusher/millstone) process the block beneath them through Create's crushing chain (stone→cobblestone→gravel→sand, ores→raw blocks) while the network spins, and kinetic blocks now show Create's tooltip summaries. 38 injections; verified: apply + cargo check 0 errors.