[FIX] Stamp 16 superseded trackers; harvest the rule one of them carried

The record is updated where information ARRIVES and never where a reader LOOKS.
Three instances found the same day, each with the correct information already
written down elsewhere:

  REVIEWED-81 (AUTHORIZED 07-28)      -> PENDING-81 still reads open
  the ARC open-work register, which   -> those 6 trackers still read live
    says in its own description that
    it supersedes them, with a
    per-file verified verdict
  register entry A2: "the content     -> register entry B3, one page below:
    half (B3) is now unblocked +         "[OPEN - gated on A2]"
    started" (06-17)

The third is the sharpest: both halves sit in the SAME document, so no tooling
gap explains it. ~/CLAUDE.md already rules this under Memory Discipline
("mark the superseded record as superseded"); the rule is being applied to facts
and not to trackers, PENDING items or register entries, which are also facts
about state.

Executed under steward authorization, arrears only:
- 16 trackers stamped `superseded_by:` + `superseded_on:` AND a visible in-body
  banner. The banner is the point — metadata alone repeats the defect, since the
  finding is about what a reader sees. 9 obsoleted by the 2026-07-07 MemPalace
  wind-down; 7 already carrying the register's own verified `DONE-retire`.
- B3's label corrected, with the two-month error left visible rather than
  silently amended.
- Nothing moved, renamed or deleted: 381 pointers resolve, 0 dead, 0 mis-authored.

HARVESTED BEFORE STAMPING, and this is why the harvest came first:
`project-mempalace-library-incremental-remine-strategy` carried a steward-verbatim
rule that is instrument-independent — never run a single multi-day index; order by
criticality; gate each tranche on READBACK, not on write-success (933,576 drawers
once stored successfully and could not be read back at all). It lived only inside
a MemPalace tracker, so retiring the instrument would have retired the rule with
it. ~/CLAUDE.md names that exact hazard: "state the obligation first and the
instrument second, or the next retired tool takes a rule down with it." Now
`feedback-bulk-indexing-runs-incrementally-with-readback.md`, and it applies to
studium-engine corpus work.

Held back deliberately: 2 correctly-parked files with named dependencies, 2 named
nowhere (returned to the steward), and 39 trackers unread — recorded as a gap,
not as a finding.

Measurement note: every earlier estimate of tracker staleness was wrong, because
both mtime and git-last-commit were reset across 283 files by the 2026-06-06
normalization sweep. The honest figure excludes it: median 90 days.

Filed as PENDING-142 ADDENDUM 2 per steward direction (fold, do not file anew).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013Y6t6qx7cpaCu5xGdD36u4

claude/memory/MEMORY.md

@@ -6,7 +6,7 @@ metadata:
   type: note
   permalink: claude-memory/memory
   originSessionId: 22915403-bc5d-4796-9c7d-196b7c30d2f9
-  modified: 2026-08-09T19:50:40.617Z
+  modified: 2026-08-17T13:20:44.481Z
 permalink: claude-memory/memory
 ---
 
@@ -40,6 +40,7 @@ permalink: claude-memory/memory
 - [Tool review after each use](feedback-tool-review-after-each-use.md) — review every tool we built after each run, success OR failure. **PASS-BUT-FALSELY is the priority signal.** Log: `chamber-library/_curation/tool-evolution-log.md`.
 - [Every canon doc's source lives in Chamber Sources](feedback-resolve-source-through-chamber-sources.md) — a canonical's source = whatever `resolve_archived_source` returns, **never** the master library or a path in frontmatter. Read the banked record before calling a mismatch a defect.
 - [Engine sources graduate to the permanent chamber](feedback-engine-sources-become-permanent-chamber-collection.md) — work added for the engine ALSO becomes permanent collection unless stated otherwise; take it all the way (clean→verify→graduate→catalogue→sidecar). Never leave staged.
+- [Bulk indexing runs in tranches, gated on READBACK](feedback-bulk-indexing-runs-incrementally-with-readback.md) — never one multi-day mine; order by criticality; **prove each tranche by reading back, not by write-success** (933k drawers once stored fine and were unreadable). Steward rule 2026-05-04, learned on MemPalace, **applies now to engine corpus work**.
 - [Studium Engine charter](reference-studium-engine-architectural-charter.md) — the engine's constitutional doc. Read before building. · [Sixtus-V collaboration](feedback-studium-engine-sixtus-v-collaboration.md) — build freely, surface only vision-forks; **constraint-candidates** = 3rd governed instrument. Studium-engine only.
 - [CapableHands standing authorization](reference-capablehands-standing-authorization.md) — M4 mini `david@10.0.1.136` durably authorized for remote OCR/inference; don't re-ask (steward 2026-07-01).
 - [Typography palace — query via CLI](reference-typography-palace-cli.md) — ~20 type masters at `~/.mempalace/palace-chamber-typography`; `mempalace --palace <that> search "…"`. For ARC typography; don't re-ask where it lives.