Recreates the Excludability × Subtractability matrix in mycostack
aesthetics with the third Anti-rival column (network goods, symbiotic
goods). Commentary frames symbiotic goods as the MycoStack's territory —
anti-rival and non-excludable, where every participant strengthens the
whole. Placed between Legacy and Compost sections.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
c844d86527