The Principia Machina/TPS/5.2 The platform

Instruction artifact: TPS 0.1.0, page 5.2 The platform. Part of TPS 0.1.0 and the TPM hub. Human-only edit (TPS 5.13). Version 0.1.0, proposed; declaration pending. Governing section: this page, TPS 5.2. The text below is this page's unit of the TPS 0.1.0 artifact, verbatim; the whole artifact and its file digest are on The Principia Machina/TPS 0.1.0.

TPS 5.2  THE PLATFORM
purpose: native MediaWiki as used: display, history, protection, the
         Action API; rights configuration owed; append-only by save hook
         plus audit
governs: 5.2 | version: 0.1.0 (proposed) | class: instruction artifact
audience: operator

5.2.1  PLATFORM is native MediaWiki: page display, history, protection,
       upload, the Action API (see 1.1). [I-045]
5.2.2  A page is identified by title plus content hash. MediaWiki
       computes a SHA-1 per revision, exposed by the API and in dumps,
       which the manifest may carry; the chain's own link hash is
       SHA-256 (see 5.11, 2.5.4). [I-118] [B-07]
5.2.3  Append-only has no native MediaWiki protection level; it is a TPX
       save-hook check plus audit, and ratchet debt until the hook
       exists (see 4.2, row 28). [B-36]
5.2.4  The platform enforces the PL and GR cells of 5.13 and the EC
       check of 4.2 row 5; every other check is TPX's or an audit's.
       [I-087] [B-18]
       OWED: rights configuration: the agent group, the human-only
       group, the declaring authority's account; page protection per
       class; upload configuration for the file classes the wiki
       accepts; kind: absence; C-17.