Critical Filter emerges here as a sovereign analytic organ that converts the Socioplastic Mesh from a proliferating discourse into an auditable epistemic machine. Where the earlier organs stabilise substrate, breath, metabolism, custody, and armour, this new layer installs a metacognitive membrane: it does not add more content, it tests the conditions under which content remains citable, transmissible, and resistant to drift. The prose frames porosity not as theoretical looseness but as controlled permeability—an ethics of selective absorption capable of importing open-science precedents (RO-Crate, JSON-LD) while refusing the anaesthetic vocabulary of institutional urbanism. In art-critical terms, the “Critical Filter” functions like a curatorial conservation lab for a living exhibition: it regulates contamination, performs provenance checks, and insists on density as the price of entry. This is not managerial bureaucracy; it is an infrastructural aesthetics, a refusal to let the Mesh be interpreted into harmlessness. By treating each organ as a data object with genetic code—authorship, versioning, identifiers—the organ formalises legitimacy as an internal property rather than an external grant. The city, consequently, is no longer an interpretive horizon but an operational field whose claims must survive recursive re-entry. The organ’s value is methodological: it makes critique measurable without flattening it, and it renders “sovereignty” legible as a protocol rather than a pose.