memory: bundle accumulated 04-17/26 + lock ARC about-page architecture

Safety checkpoint before deep-audit Phase 0 of the ARC repo. Steward-authorized
commit-everything for rollback safety.

ARC architectural locks (2026-04-26 evening):
- Path 1 enfilade structure (separate Colophon and Lex items)
- 8-door enfilade locked: Colophon · Lex · Framework · Vignette · Attention ·
  Chamber · Tools · Now (+ Bio quiet link)
- Adsum and threshold-hic as two distinct texts on the reflowed About page
  (steward verbatim: "They are certainly not the same text")

ARC consolidation pass (canonical tracker project-arc-rework.md, +~700 lines):
fold 04-23 evening (Norris read), 04-24 (lex-method authored, posture cluster,
§XII Sidenotes, ARC CLAUDE.md cleanup), 04-25 (marks cluster, colophon-at-scale,
full Vico/Harrison lex-chain), 04-26 (chamber-library walk, cluster scaffolds,
canonical-tracker discipline surfaced).

Sibling-file integration: four 2026-04-26 frame files folded into the canonical
tracker (Integrations A/B/C/D) with INTEGRATED redirect notices retained as
audit trail.

New durable feedback memories:
- feedback-canonical-workstream-tracker-discipline (umbrella drift surfaced
  2026-04-26 by steward; proposes /wake-up + /wrap-up amendments)
- feedback-catalogues-stale-walk-trees (steward feedback on chamber-library
  catalogue currency)

Implementation plan drafted for the coming week: Phase 0 deep audit → Phase 5
cleanup, with steward additions on second pass (deep audit; Chamber v1 as own
browsable archive; clean rebuild of cluster sources rather than moving test
artifacts as canon).

Also bundled (untracked accumulation since 04-17):
- ~24 session memory + ledger files for 04-17 through 04-26 work
- ~10 feedback memories (BMF + ARC + working-method)
- 5 project memories (lex-as-method, strunk-white queue, plus today's four)
- 4 user memories (duality-rules, formation-practice, foundation-work, humic-layer)

Steward-side modifications also in this commit: ~/CLAUDE.md, bin/bmf-start.sh,
open-tasks.md, project-focus-april-may.md, session-2026-04-17 — all
pre-existing, not from today's session.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

claude/memory/session-ledger-2026-04-20.md

@@ -0,0 +1,39 @@
+---
+name: Session Ledger 2026-04-20
+description: Practice-of-return ledger maintained by /symmetria — returns, open horizons, recalibrations, authorization moves, sub-agent dialogues, bypasses.
+type: feedback
+originSessionId: a73f10a9-062b-4360-bfd2-2ae37afd00d1
+---
+# Session Ledger — 2026-04-20
+
+## Returns
+
+- **2026-04-20 — Flagged "worldfulness" as a possible coinage in the steward's Kai 9+9 piece.** Steward clarified: Vico → Harrison reference; *mondo* / the made-world humans inhabit through institution, language, custom. Same Harrison who anchors I16's five-source convergence. New drift pattern: *flagging precision-language as imprecision when I lack the reference frame.* Should have carried the Harrison frame into the read before flagging.
+
+- **2026-04-20 — Applied forming definition before hearing the steward's articulation.** First-pass read of the Kai piece classed it as "Meditation that opens through Observation." When steward then articulated the working Meditation definition (*"Meditations always have an object, and we pose attention upon the object to root ourselves in the present moment in order to observe"*), I had to correct: the infant-with-defect IS the meditation's object, not an Observation-entry-into-Meditation. Drift pattern: *assuming a forming spec definition is settled when the actual articulation is still pending.* The spec is in draft; load-bearing definitions arrive in conversation, not in code. Hold definitions provisionally until the steward articulates them.
+
+- **2026-04-20 — Overstated cluster-glyph-only cost by missing the title-paired type label.** Framed Meditation+Reverie shared ⊙ as "visually identical in archive listings" — true at the glyph level but missed that the type label is always paired with the title in the apparatus, so readers DO see "Meditation" or "Reverie" at piece-level. The cluster decision is cleaner than I said. Steward correction: *"and the type is always listed with title of the work in any case."* This is the **third return today in the same family**: speaking from imagined state instead of verified state. (Yesterday's stale-tool-output, this morning's forming-definition-as-settled, now type-label-presence-as-absent.) The cross-pattern: *imported-assumption presented as established-fact*. Worth holding awake — three instances in one day.
+
+- **2026-04-20 — Added body-text datelines without checking what the apparatus template already renders.** When the steward said *"April 20 in the apparatus — the hic convention demands this"*, I interpreted "apparatus" as "the dateline area at the bottom of the body" and added body-text datelines to both posts. But `templates/post.html:46-48` already renders an apparatus dateline from frontmatter `location:` + `date:`. I duplicated, the steward caught it after publication. **Fifth instance today** of the imagined-state-vs-verified-state pattern (worldfulness, forming-definition, type-label, dateline-template, body-vs-apparatus). The discipline gap: when extending or honoring a system, READ THE TEMPLATE before adding to it. Templates carry implicit contracts — "what the apparatus renders" is in the template, not in my mental model.
+
+## Open horizons
+
+- Pulling thread: Content Typology Specification (`~/_Dev/animal-davidglidden-eu/docs/AldineXXI-Codex/content-typology-specification.md`, untracked). First unlocked decision: Meditation glyph.
+- Constraint on glyph proposal: distinguish from ● and ○; quiet-geometric compass family; "sustained inhabiting" quality. Steward's aesthetic instinct drives the choice — not mine.
+- Drift patterns to hold awake (carried from yesterday): stale-tool-output-reported-as-current; running-claims-without-grounding-verification; author-vs-reviewer-validation-confusion.
+- Stale SessionStart hook fired March 5 content at session start — investigate the hook source if the steward wants the noise gone.
+- **Today's substantive ARC work captured in `project-arc-rework.md` 2026-04-20 section:** Meditation defined verbatim, Reverie proposed as new type, corpus typing audit (10 pieces read, 5 mis-typed), Kai 9+9 piece status, walking-with-Kai as reverie condition.
+- Reverie glyph also TBD if type lands — distinct from still-geometric family; perhaps motion or dissolution.
+- Threshold Breath needs re-reading against today's tighter Meditation definition before treating as Meditation exemplar.
+
+## Confidence to recalibrate
+
+## Authorization moves
+
+- **2026-04-20 14:54 — PUBLICATION authorized + executed.** Steward authorized commit + push + build for two new posts. Commit `7de7db9` on main. Pushed to origin (Skemantix Gitea) and github-backup. `make build` succeeded (Stack/GHC available locally). Auto-deploy chain fired: GitHub Pages mirror commit `92da8d5`, Cloudflare Pages deployment `46b2fcd8.animal-rationis-mirror.pages.dev` (4 files uploaded, 356 cached). The Kai 9+9 meditation (*On Éveil / Sommeil*) and the Avignon poem (*Time is not a river*) are live. Static nginx target script missing — non-fatal warning only.
+
+- **2026-04-20 — APPARATUS DATELINE FIX authorized + executed.** Steward flagged body-vs-apparatus dateline duplication after first publication. Three changes made: site.hs:692 format `"%B %Y"` → `"%-d %B %Y"` (European long-form, full day); both posts add `location:` frontmatter; both posts have body datelines removed. Commit `489226d` on main, pushed to both remotes. `make rebuild` ran (clean Stack rebuild + executable recompile + auto-deploy). Rebuild completed with exit 0 — verifying deploy output now.
+
+## Sub-agent dialogues
+
+## Bypasses