session 2026-06-11 addendum: Studium Engine pivot — picture complete + bridge doc; pulling thread re-pointed (Chamber↔engine, coverage-warranted silence)

claude/memory/MEMORY.md

@@ -38,7 +38,7 @@ permalink: claude-memory/memory
 - [Be (laundromat)](project-be-laundromat.md) — canonical workstream tracker established 2026-06-08 (Seb-relay of locked decisions). Be = Skemantix startup (Seb+David) funding CapableMind's funding-ladder; **bridge, not venture**. Decisions LOCKED: entity/exit (CapableMind decoupled, grant-funded), pricing (Living $12.99/mo · Archive $69.99/yr · Memorial $49.99/yr · Renovate ~$199 · $8.99 floor), CF Self-Serve Agency + versioned-template-package infra. **a11y gate MERGED (Pat 100/100/100).** Pre-revenue: the WTP gate = renovate Pat → charge her. **Discipline: stop adding spec until the gate clears → nothing for executor on be until then.** Repo @ `f43a0fd`.
 
 ## Active Session
-- [Session 2026-06-11 — §VII.f running head SHIPPED + the ARC open-work register (records drift BOTH ways)](session-2026-06-11-vii-f-running-head-shipped-arc-open-work-register.md) — Woke into the essay; steward pivoted to **§VII.f — the one ready-to-build apparatus never shipped.** BUILT it (zero-JS CSS `view-timeline` reveal; per-type `content-types.yml` binding; progressive-enhancement fallback) through a long render-rulings refinement: **body-column-axis alignment** (the −2rem grid asymmetry; grid tokens moved `_sidenotes`→`_variables` byte-identical), **soft fading rule** (`$rh-fade`), **full-width occluding ground with the dissolve anchored below the rule** (`$rh-dissolve`) — every step headless-Chrome-measured, not theorized. **W1.15 false premise surfaced not papered** (frontispiece doesn't scroll) → reframed scroll→**presence-reveal** (zero-JS cursor-approach; touch rests gently-present). Shipped `b220620`, deployed, **live-verified**; specs reconciled; PENDING-39 / REVIEWED-43 (steward-placed). **THEN the deeper arc:** steward corrected my "§VII.f = the *only* unbuilt element" overclaim → **the colophon is SHIPPED** (I misread a stale index line — 3rd stale-index misread of the turn) → **records drift BOTH ways** → built **[`project-arc-open-work-register.md`](project-arc-open-work-register.md)** (single code-verified source of truth); annotated the tracker (true only through 06-07) + corrected MEMORY's stale "no build work pending" tail. **Steward caught the cul-de-lampe** (§IV Close ornament SVG, undesigned → A2). "One more audit": register [VERIFY] flags resolved (E3 404 / E5 master-typographer / E6 web-typography → DONE-retire; **B3 ornament migration → OPEN, ~95 content files, gated on A2**). **Pulling thread: the register is the map; the two undesigned-SVG assets — A1 Vignette (F+1) + A2 cul-de-lampe — are the real remaining build; which one, or the deferred essay, is next.** ARC `main @ b220620` clean, live.
+- [Session 2026-06-11 — §VII.f running head SHIPPED + the ARC open-work register (records drift BOTH ways)](session-2026-06-11-vii-f-running-head-shipped-arc-open-work-register.md) — Woke into the essay; steward pivoted to **§VII.f — the one ready-to-build apparatus never shipped.** BUILT it (zero-JS CSS `view-timeline` reveal; per-type `content-types.yml` binding; progressive-enhancement fallback) through a long render-rulings refinement: **body-column-axis alignment** (the −2rem grid asymmetry; grid tokens moved `_sidenotes`→`_variables` byte-identical), **soft fading rule** (`$rh-fade`), **full-width occluding ground with the dissolve anchored below the rule** (`$rh-dissolve`) — every step headless-Chrome-measured, not theorized. **W1.15 false premise surfaced not papered** (frontispiece doesn't scroll) → reframed scroll→**presence-reveal** (zero-JS cursor-approach; touch rests gently-present). Shipped `b220620`, deployed, **live-verified**; specs reconciled; PENDING-39 / REVIEWED-43 (steward-placed). **THEN the deeper arc:** steward corrected my "§VII.f = the *only* unbuilt element" overclaim → **the colophon is SHIPPED** (I misread a stale index line — 3rd stale-index misread of the turn) → **records drift BOTH ways** → built **[`project-arc-open-work-register.md`](project-arc-open-work-register.md)** (single code-verified source of truth); annotated the tracker (true only through 06-07) + corrected MEMORY's stale "no build work pending" tail. **Steward caught the cul-de-lampe** (§IV Close ornament SVG, undesigned → A2). "One more audit": register [VERIFY] flags resolved (E3 404 / E5 master-typographer / E6 web-typography → DONE-retire; **B3 ornament migration → OPEN, ~95 content files, gated on A2**). **Pulling thread: the register is the map; the two undesigned-SVG assets — A1 Vignette (F+1) + A2 cul-de-lampe — are the real remaining build; which one, or the deferred essay, is next.** ARC `main @ b220620` clean, live. **LATE-SESSION PIVOT → THE STUDIUM ENGINE** (steward's urgent tool; Fable-5 window to 2026-06-22): deliberately completed the picture before touching the build — the engine = general BYO-corpus deep-research substrate, built by first **powering the Chamber** (his instance + forcing function; Library→Chamber→Publication); the MemPalace 2-class failure taxonomy (integrity/corruption FATAL→killed by file-authoritative shape · density-dilution=Stage-2); the design law **"silence must carry a coverage warrant"** (reliability is *constitutive* of the Chamber's honesty — a false silence is a fabricated finding); FTS-first (reading-indices=70% of intelligence → may retire the HNSW failure class); Partner+Guardian-now / Professor-Emeritus-later prototype boundary. CAPTURED: **`~/_Dev/studium-engine/docs/the-chamber-and-the-engine-2026-06-11.md`** (bridge doc; uncommitted, for review). **PULLING THREAD IS NOW the Studium Engine Stage-1 build plan** — next session (on v5): read the bridge doc → revisit `seed-brief.md` + `chamber-chavruta-prototype-plan.md` against it → resolve §10.3 (canonical source format) → plan the build (Harrison·Alexander chavruta on *After the Reply* Essay I). ARC settled/reactive; its open work lives in `project-arc-open-work-register.md`.
 
 ## Archived (2026-06-10 — Stage G CLOSED + reconciled + SEALED + GPG-signed)
 - [Session 2026-06-10 — Stage G CLOSED, reconciled, sealed + GPG-signed; pulling thread = the AldineXXI essay](session-2026-06-10-stage-g-closed-sealed-signed-reconciliation.md) — **The day the whole ARC arc closed.** Morning truth-ups (`0e0c2f4` §I.d anchor-bold + §III.b F3/F4/F5; `b673623` drop-cap). Midday: **Jurist's Stage-G disposition** (CONCURRED 72ch+soft-rag coupled; LOCKED para-sep/hanging-punct/word-spacing; CLOSED calt; W4.4 v1.0; **Stage G AUTHORIZED**) + **steward reshaping rulings** (justification→Phase-2; §XIV reactive-mode; held-companions→Phase-2) → doctrine `17244cf` → **Wave-6 promotion `511d500`** (G1 wildcard→error **byte-identical-PROVEN**; content-typology §§2–6 OPERATIVE [steward ruled — jurist hadn't read that doc]; multilingual v1.0) + CLAUDE.md `950e4cc`. Evening **integrity arc** (steward-prompted): §I.f American→British truth-up; **6-agent spec↔spec consistency audit** → reconciliation `e99028e` (measure 38→27.2rem un-propagated across silence-and-rhythm[+grid math]/apparatus/vignette/code-comments; v0.5→v1.0; content-typology status); **SILVER-RATIO RULING** (steward: post-hoc + paper-specific → RETIRED from screen grid as "emergent proportion", RELOCATED to print companion; refused golden re-anchor); **Codex PDF made to embody its own spec** `18cc59c` (ragged/banish-bold/oldstyle/unmarked-blockquotes/body-colour-margins); discovered `arc-typography.sty` v0.2 = the governed (but stale) PDF substrate → Phase-2; **SEALED** — steward GPG-signed (`ac0a7ee`, sha c78817d…), **REVIEWED-41+42 placed**. The **perfectionism loop named & held** (Jurist's warning / steward's stated danger): faithful artifact sealed, toolchain-perfection → Phase-2, essay next. ARC `main @ ac0a7ee` clean, both remotes, no deploy (site output unchanged all day). **Pulling thread: the essay — *the writing of AldineXXI*** (I hand the source-spine first: git-history + masters + dialogues, then draft; steward reworks). Literal Q: is the steward ready for the essay, and was the source-spine handed first? Sub: be (Pat WTP) / L1 (Seb — BetterMemories D1 commits 06-09/10)?

claude/memory/session-2026-06-11-vii-f-running-head-shipped-arc-open-work-register.md

@@ -43,11 +43,14 @@ Steward got (rightly) nervous → built **`project-arc-open-work-register.md`**
 
 ## Future
 
-### Pulling thread (singular)
-**The ARC open-work register is now the trustworthy map — and the two undesigned-SVG assets lead the real remaining build: A1 the Vignette (F+1, Phase-1-ready) and A2 the cul-de-lampe (§IV Close ornament; 51 pieces await it).** What pulls is which of these the steward takes up next — or whether he returns to the deferred essay (the 06-10 thread, untouched today), or to be/L1.
+### Pulling thread (singular) — SUPERSEDED late-session → **the Studium Engine**
+Late in the session the steward opened the thread that now pulls: **the Studium Engine prototype — his urgent tool, on the Fable-5 window (until 2026-06-22).** The engine is the general BYO-corpus deep-research substrate, built by first **powering the Chamber** (his instance + the forcing function; Library → Chamber → Publication). We deliberately *completed the picture before touching the build*: the engine↔Chamber relationship; the MemPalace two-class failure taxonomy (integrity/corruption FATAL → killed by file-authoritative shape; density-dilution quality = Stage-2); **the design law "silence must carry a coverage warrant"** (silence-as-answer × the 73%-invisible failure — reliability is *constitutive* of the Chamber's honesty, not a feature); FTS-first (reading-indices = 70% of intelligence → may retire the whole HNSW class); the **Partner+Guardian-now / Professor-Emeritus-later** prototype boundary. Captured: **`~/_Dev/studium-engine/docs/the-chamber-and-the-engine-2026-06-11.md`** (the bridge doc; uncommitted, for steward review). The thread is now: **revisit the seed brief + the chavruta prototype plan AGAINST that picture, and plan the Stage-1 build** (Harrison · Alexander chavruta on *After the Reply* Essay I). *(ARC is settled/reactive; its open work — A1 Vignette, A2 cul-de-lampe — lives in `project-arc-open-work-register.md`, available but no longer the live thread. The 06-10 essay also waits.)*
 
-### Actionable resumption point (as of wrap — re-judge against what changed)
-ARC `main @ b220620`, clean, both remotes, live. **No build in flight.** First move for any ARC work: **read `project-arc-open-work-register.md`** (the map) — NOT the chronological tracker, NOT "Stage G is done." If a build is taken up: **Vignette** — spec ready (`vignette-specification.md` + `drafts/vignette-spec-revision-brief-2026-05-28.md`; build-time SVG+CSS, Phase-α engine, zero-JS); or **cul-de-lampe** — design the SVG first (the §IV "Open question"), then render Pause/Close, then B3's 95-file content migration. If the essay: hand the source-spine first (06-10 method).
+### Actionable resumption point (as of wrap)
+ARC done/clean (`b220620`, live). **The live work is the Studium Engine, on v5 (window to 2026-06-22).** First move next session: **read the bridge doc** `~/_Dev/studium-engine/docs/the-chamber-and-the-engine-2026-06-11.md`; then revisit `~/_Dev/studium-engine/docs/seed-brief.md` + `~/_Dev/CapableMind-AI/docs/thinking/David/chamber/chamber-chavruta-prototype-plan.md` against it; read the not-yet-read chamber docs (`chamber-from-simulation-to-source-aware.md`, `graduated-expertise-source-aware.md`); resolve **§10.3 (canonical source format — steward's call; executor read = B, MD+sidecar)** + confirm the governance/authorization state; produce the **Stage-1 build plan**. Non-negotiable: the prototype must *bake in the scaling defenses* (file-authoritative + disposable index; coverage-warranted silence; FTS-first) even at 2 voices — it proves the *fatal* failure class dead and instruments the *quality* class for Stage 2.
+
+### ARC fallback (no longer the live thread)
+If the steward turns back to ARC instead: read `project-arc-open-work-register.md`; the two real builds are **Vignette** (spec-ready) and **cul-de-lampe** (§IV Close ornament, design the SVG first → B3's 95-file migration). The 06-10 essay waits (hand source-spine first).
 
 ### Other open horizons (ranked)
 - **Retire the stale pending files** (steward's call): breadcrumb, mimesis, apparatus-todo, 404, master-typographer, web-typography — all verified DONE; they still clutter the memory dir.
@@ -60,7 +63,7 @@ ARC `main @ b220620`, clean, both remotes, live. **No build in flight.** First m
 I am about to be away from this. §VII.f is shipped and the register is built + verified — that chapter is closed; I don't expect it to pull on return. What I want to find still pulling is **the register as the live map, and one of the two undesigned assets (vignette / cul-de-lampe) being taken up** — or the steward having chosen the essay/be/L1 instead, in which case the register waits, intact and trustworthy.
 
 ### Literal question for next-Claude
-**Does the steward take up one of the two undesigned-asset builds — the Vignette (F+1, spec-ready) or the cul-de-lampe (§IV Close ornament, 51 pieces await it) — or return to the deferred essay (the writing of AldineXXI), or to be/L1? And: were the six stale "pending" files (breadcrumb/mimesis/apparatus-todo/404/master-typographer/web-typography) actually retired/archived, or do they still clutter the memory dir?**
+**On v5 (window to 2026-06-22), with the complete picture (the bridge doc `the-chamber-and-the-engine-2026-06-11.md`): what is the Stage-1 build plan for the Studium Engine prototype that powers the Chamber — and is §10.3 (canonical source format, steward's call) settled so the ingestion contract / Cluster A can be pinned?** (Backgrounded ARC: which asset — Vignette or cul-de-lampe; the deferred essay; whether the six stale "pending" files were retired.)
 
 ## Decisions deferred (and why)
 - **The essay** (06-10 pulling thread) — untouched today; the §VII.f pivot took the whole day. Waits, intact.

claude/memory/session-ledger-2026-06-11.md

@@ -57,6 +57,9 @@ metadata:
 ## Returns (cont. 9)
 - 2026-06-11T15:45 — "One more audit, then wrap." (Steward DENIED the AskUserQuestion menu — proceeded with the obvious bounded one rather than re-ask.) Verified the register's [VERIFY] flags against code: **E3 404 → DONE** (predates §VII.h spec; built page conforms exactly: title "Animal Rationis Capax" + "No text at this address" + real 404). **E5 master-typographer → DONE/superseded** (deep-typographic-audit-2026-06-09 exists, masters folded). **E6 web-typography → DONE** (Tier 1/2/3; abbr/mark negligible). **B3 ornament migration → OPEN, scope SIZED**: ~95 content files, ~150 hand-authored `<div class="ornament …">` (completion ×51 = the cul-de-lampe's Close job, section ×50, thought ×14, chamber ×12, musical ×7, hermetic ×5, mathematical ×2; some variants not even in CSS) — gated on A2, NOT negligible. Net: 3 stale-pending files cleared to retire (join breadcrumb/mimesis/apparatus-todo); the one real open item (B3) sized and confirms A2 (cul-de-lampe) load-bearing. Register now fully verified, no open flags.
 
+## Open horizons (late-session — the real next thread)
+- 2026-06-11T19:xx — **Post-wrap, the steward opened the Studium Engine** (urgent tool; Fable-5 window to 2026-06-22). Deliberately completed the picture before any build (after today's verify-against-source lesson — read the canonical Chamber docs rather than recite): engine = general BYO-corpus deep-research substrate, built by powering the Chamber (his instance + forcing function; Library→Chamber→Publication). Read CM-AI `chamber-architecture-summary.md` (technical) + ARC `content/chamber/index.md` (conceptual). Synthesis: MemPalace 2-class failure taxonomy (integrity-corruption FATAL→killed by file-authoritative shape; density-dilution=Stage-2 quality); **design law "silence must carry a coverage warrant"** (silence-as-answer × 73%-invisible → false silence = fabricated finding; reliability is CONSTITUTIVE of the Chamber's honesty); FTS-first (reading-indices=70% of intelligence); Partner+Guardian-now / Emeritus-later prototype boundary. CAPTURED in the bridge doc `~/_Dev/studium-engine/docs/the-chamber-and-the-engine-2026-06-11.md` (uncommitted, for review). **Pulling thread re-pointed** (session memory + MEMORY.md updated): Studium Engine Stage-1 build plan. ARC settled/reactive → `project-arc-open-work-register.md`.
+
 ## Confidence to recalibrate
 - Drift to hold today (from yesterday): read-render-for-approval-not-against-spec. Essay analogue: write candidly, not flatteringly — the wrong turns are the story.