Sounio-lang/sounio: v0.6.0 - Epistemic Type System I

Epistemic Type System - Foundation Core epistemic computing features for Sounio. Features Uncertainty promotion lattice KEC (Knowledge Engineering Classification) auto-selection Epistemic values with uncertainty tracking Lattice meet/join operations Philosophy Every value carries knowledge of its own uncertainty. Example ```sio let measurement = Knowledge::new( value: 42.0, uncertainty: 0.5, confidence: 0.95 ) ```