Measuring Meaning in Retrieval Basins: A 90-Day Winding-Number Protocol from Lagrange Observatory! (EA-SEI-MM-02 v2.0, Framework 15 Paper 03)

Pre-registered protocol specification. Framework 15 Paper 03. Specifies a 90-day prospective measurement protocol for the closed-system trajectory deviation defined in the Semantic Deviation Principle, instantiated against the response distributions of contemporary AI retrieval surfaces. Methodological design (v2.0): Two instrument classes: Class R (retrieval-mediated) reported separately from Class P (parametric) Three-condition control: S vs. S* (blank ORCID) vs. S** (plausible synthetic identity) Frozen extractor model commitment (no UI scraping, API-only) Three-representation robustness cross-check Strengthened P4 (7/10 queries monotonic, mean across surfaces) Auto-epistemic separation of Query 4 ("Who is Lee Sharks?") from headline metric Laplace smoothing (α=1) over union support Hex: 15.OBS.LAGRANGE.MM.03 Operating on: The Writable Retrieval Basin (EA-RBT-01, DOI: 10.5281/zenodo.19763346) and the Semantic Deviation Principle (EA-SEI-MM-01 v0.2 Final, DOI: 10.5281/zenodo.20250736) as formulated by Lee Sharks Verification condition: ∮ = (m, n) | m + n ≥ 3