Umbrella ADR for the substantive-variation axis that composes
orthogonally against register (ADR-0068..0072). Drafted only;
status Proposed. No code, no pack, no test landed.
Architecture summary
- Anchor lens is the substantive axis: register varies surface text
while keeping grounding_source / trace_hash byte-identical;
anchor lens deliberately moves both because the proposition
itself changes when the substrate changes.
- Pivot is shared `semantic_domains` atoms (already on disk across
grc / he / en cognition packs), not transliteration tables — the
seam stays language-neutral so future substrates compose without
touching anchor-lens code.
- English compound phrasing only at the surface ("knowing-as-
experience", "knowing-as-system"); Greek / Hebrew glyphs live in
audit / provenance fields only. L1.3 invariant
`anchor_lens_no_glyph_leak` is a hard gate.
Four-phase rollout (mirrors R1–R5 cadence)
L1.1 content phase — distinction-bearing lemma additions
(ἐπιστήμη / σύνεσις / ἀγάπη-φιλία-ἔρως-στοργή / αἰών-χρόνος-
καιρός; חסד / שלום / צδק) + alignment.jsonl on the cognition-
tier packs. No code. Prerequisite for every later phase.
L1.2 AnchorLens pack class + loader + `default_unanchored_v1`
sentinel. Null-lift CI invariant pinned.
L1.3 First non-trivial lenses (`grc_logos_v1`, `he_logos_v1`)
wired into chat/pack_grounding.py composers. Proposition-
lift invariant + glyph-leak gate pinned.
L1.4 Telemetry (TurnEvent + ChatResponse gain anchor_lens_id),
`core chat --anchor-lens` flag, `core demo anchor-lens-tour`
asserting trace_hashes_distinct_across_lenses (opposite of
register-tour's claim — both must hold).
Three honest gaps blocking L1.2+
- Distinction-bearing lemmas absent from cognition packs.
- No reviewed teaching corpus for non-English (cognition_chains,
relations_chains, cross_pack_chains all en-only).
- No realizer infrastructure for cross-lingual surface composition.
L1.1 (pure content) closes all three for the cognition tier.
Orthogonality claim — load-bearing
register-tour : per prompt, fix lens, vary register → trace_hash CONSTANT
anchor-lens-tour : per prompt, fix register, vary lens → trace_hash DISTINCT
Both must continue to hold; failure of either breaks the seam.
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