DOCFIX-209: correct SKILL.md session-CLOSE bookend + re-seed ledger machine-block ...

SKILL.md's always-loaded close-bookend line conflated two ratified mechanisms:
GA-R4 rule 2 (ledger rotation) and GA-R2/D1 (changelog = session body-of-record).
"the full session body goes to docs/archive/ in the same close commit" is wrong on
both counts -- the per-session body is the changelog (docs/changelog-<date>-<label>.md,
cited by a Body: line in the SESSION CLOSE block), and docs/archive/ holds rotated
ledgers (session-ledger-rotated-*.md) + per-stage consolidated records
(archive/changelogs/, archive/stage-records/), never per-session bodies. Corrected in
SKILL.md and the byte-identical line in the derived consolidated-20260727 snapshot.
operating-discipline.md (Session continuity) was already correct -- no edit.

Disposition operator-ruled 2026-08-05 "Proceed as DOCFIX-209": both same-day rulings,
read correctly, back the practice and contradict the skill line, so no ratified text
changes. Body: docs/changelog-20260805-skill-close-convention-docfix.md.

Also re-seeded session-ledger.md machine-derived block from ledger-scan (prior seed
2026-08-02, stale): 4 open decisions (D-142 added), 29 open SEC (SEC-033 added),
next-free D-143 / DOCFIX-210 / BUNDLEFIX-053. No status-bearing surface touched
(a skill routing line is not a status claim -- no GA-R1 L10 coupling). Stage 5 dc0
untouched. repo-lint 0 fail / 1 legacy warn; skill files ASCII-clean; ledger fences OK.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fg98z7QyzwYUs8fsWCn728