session 2026-07-05: close PENDING-48 (Studium V0 jurist gate cleared) + ledger

PENDING-48 closed against the jurist ruling: V0 §2/§5 method-gate cleared with conditions;
fidelity_equivalence@1 doctrine fork; diplomatic-gold flag resolved (modernized -> moot).
Session ledger for 2026-07-05. REVIEWED-N entry owed (steward/jurist).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Dsqe1x23NgWaRdiFWSotur

claude/memory/session-ledger-2026-07-05.md

@@ -0,0 +1,37 @@
+---
+name: session-ledger-2026-07-05
+description: "Practice-of-return ledger maintained by /symmetria — returns, open horizons, recalibrations, authorization moves, sub-agent dialogues, bypasses."
+metadata: 
+  node_type: memory
+  type: feedback
+  originSessionId: 262afd69-82e0-4a5f-b0df-fcb93a288a6b
+---
+
+# Session Ledger — 2026-07-05
+
+## Returns
+
+- 2026-07-05T11:53 — Wake. Thread validity gate run before synthesis: CONFIRMED (no overnight movement; repos + dotfiles clean). Verified built-state and git state against the substrate rather than inheriting the June record — carrying last session's twice-held trust-prior-pass-frame reflex.
+- 2026-07-05 — **Verify-before-asking:** the jurist's diplomatic-vs-modernized flag — resolved against the actual source files (glyph census: zero long-s/fold-ligatures/soft-hyphens across all gold) rather than assumed or relayed back as a question. Modernized → flag moot at present gold; caveat recorded for future diplomatic gold. Uses reach proactively (CLAUDE.md) instead of adding a round-trip.
+
+## Open horizons
+
+- **Engine (build day, Opus):** V0 + N0 — the two contracts, together (plan §7). V0 = verifier contract + pre-registered thresholds → routes to the jurist (the one named D-1 exception). N0 tree contract must exist before any hand touches the Loeb extractor rebuild (reciprocal obligation, §3.4). N1 can proceed while V0 sits with the jurist.
+- **Corpus:** Region 1.1 — the exclusion path, test-first, surfaced for jurist ratification (chamber corpus-work-map-2026-07-05).
+- **Held literal question:** normalizer@N "unaltered" — engineering (D-1) or doctrine ("the bound must name the edition")? Will the jurist gate V0 clean, or does "what counts as the same words" surface an unanticipated ruling?
+- REVIEWED entries owed for the PENDING-46/47 chamber arc.
+- Skill-harvest backlog awaits a steward authorization pass (last full review 2026-06-05): notably `/model-handoff` (proven end-to-end last session) and `studium-engine tool-evolution-log` (home for V4's pattern-finder retro-gate review).
+- MemPalace 3.3.6 → 3.5.0 available (layers wake-recency fix #1630; likely wing-filter #1665). Read: hold through build day, run scheduled upgrade at a break.
+
+## Confidence to recalibrate
+
+## Authorization moves
+
+- 2026-07-05 — **PENDING-48 filed** (`~/PENDING.md`): routes Studium V0 (verifier contract) to the jurist as a method-gate — the one named D-1 exception (rebuild-plan §8.5). Two decisions surfaced, leans given not decided: §2 the "unaltered" equivalence relation (the held literal question; lean (B) normalizer@1, flagged possibly-doctrine); §5 the pre-registered V2 thresholds (CP-upper-bound; small-n honesty). **Held at the boundary: no V1 code.**
+- 2026-07-05 — V0 drafted (`studium-engine/docs/spec/v0-verifier-contract.md`, DRAFT-awaiting-jurist) + N0 drafted (`docs/spec/n0-navigation-tree-contract.md`, D-1, inhabitable, no jurist gate). Both grounded in code read this session (normalizer@1, sidecar schema, coverage-ledger warrant), not the plan's prose. **Uncommitted — commit+push held for steward's word** (studium is D-1 direct-to-main; not explicitly asked to push).
+- Contamination watch honored: did not let V0 silently decide the doctrine question (surfaced with lean, marked jurist's); thresholds presented as pre-registered-pending-gate, not settled; resisted the pull to build V1 past the boundary.
+- 2026-07-05 — **Jurist gate CLEARED (both §2, §5), with conditions.** Ruling recorded at source, not just relayed: V0 DRAFT→v1.0 (Ruling section); the **`fidelity_equivalence@1` fork** landed in `cluster-a-data-model.md` §5.1 (doctrine split visible at source, per the ruling's explicit instruction); PENDING-48 closed (REVIEWED entry owed). Standing conditions carried: proportional-expansion rule (§5), display↔threshold coupling (§5), diplomatic-gold caveat (§2). V1 + N1 now unblocked. Still uncommitted — commit/push held for steward's word.
+
+## Sub-agent dialogues
+
+## Bypasses