GA-R4 close for the .skill repackage + ipv4 resize advisory session.

- Bounded close summary appended to docs/session-ledger.md: 15 lines, at the
  hard cap (rule 1). Records that this entry becomes visible only when
  skill-repackage-20260727 merges, and that the un-opened GitBucket PR is the
  one blocking item the session leaves.
- Rotation (rule 3 / F1): writing the summary took the live ledger to 310
  against the 300-line cap. The oldest live entry -- the 2026-07-26 POST-CLOSE
  ADDENDUM recording D-137's adoption -- moved VERBATIM (diff-verified, 25
  lines) to docs/archive/session-ledger-rotated-20260728.md, leaving a 6-line
  ROTATED note. Ledger now 293. Fence validation OK (1 fence, 0 errors).
- Changelog Item 4 preserves the ipv4 TestCluster resize research, which was
  otherwise transcript-only: the error string traces to magnum-ui's
  getClusterNodes wrapping GET /api/container_infra/clusters/<id>/resize, whose
  three exits all yield one toast -- so the dialog fails on a READ before any
  resize is attempted, and it is not a resize permission denial. LP#2054444 is
  Invalid with a different string. Recorded as SESSION NARRATIVE only; per D-110
  the finding itself belongs to the openstack-caracal-ipv4 repo and its own
  D-0NN series, and the ipv4-directed handoff prompt is deliberately NOT
  committed here.
- Changelog Item 5 logs an authoring trap: guard-destructive.py inspects the
  Bash command string, so a commit whose MESSAGE text contains the banned
  force-push literal is blocked. Correct fail-closed behaviour, not to be
  loosened; use git commit -F <file>. Proposed for script-authoring at the next
  stage close, not executed here (no stage closed this session).
- GA-R7 memory review: 2 entries, both current and repo-deferring; no new memory
  (this session's observations are repo-carried). One intent-shaped clause in
  multi-workstation-remote-control FLAGGED for the operator, not edited -- it is
  their user memory.

No cloud mutation. No stage opened or closed. CURRENT-STATE untouched: nothing
status-bearing changed and no gate row was written into the ledger (L10 clear on
the dirty-tree scan). repo-lint 0 fail 0 warn; gauntlet ALL GREEN (81).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HidKuj6uj2irwELJQCrZQb