DC1 cache proxy INSTALLED + verified (check PASS 8/8) ...

dc-cache-proxy.sh install dc1 executed on the DC1 rack (gated): apt-cacher-ng
3.7.4 active on the utility .4:3142, proxy serves archive + UCA (200/200). DC1
apt path is now unblocked for the build. CURRENT-STATE + changelog updated.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw

D-135 amendment: DC1 interim apt caching proxy (dc-cache-proxy.sh) ...

Operator-ruled 2026-07-24 (GA-R5, utterance quoted in D-135): DC1 gets an
interim apt caching proxy (apt-cacher-ng) to unblock its build without waiting
on the full ~950 GiB debmirror; DC0 stays the full-mirror deployment under test;
DC1 proxy is replaced by a full mirror afterward. Both artifact-delivery models
thus get exercised this rehearsal (Roosevelt input, D-132/D-133).

- scripts/dc-cache-proxy.sh: site-keyed check/install; apt-cacher-ng proxy mode
  at the D-134 utility .4:3142; reuses the <site>-mirror-net layer (fails loud if
  absent); caches archive/security/UCA, consumed via juju apt-http-proxy.
- tests/dc-cache-proxy/run-tests.sh: 15 static cases, 15/15 PASS.
- D-135 AMENDED (design-decisions.md) + CURRENT-STATE Stage-4 DC0/DC1 split.
- DC1 debmirror PAUSED at ~330 GiB (kept dormant as fallback); measured that the
  vcloud uplink was NOT the shared bottleneck (pausing dc1 did not speed dc0).

Feasibility recon'd read-only first (apt-cacher-ng installable, upstreams 200 via
edge, port free). Live install on the DC1 rack is the separately-gated mutation.
repo-lint 0 fail; gauntlet ALL GREEN (78).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw

caveman: disable on live host + SEC-017 + fail-closed compress guardrails ...

Council-reviewed follow-through on the caveman plugin (operator accepted the
recommendations). Three gated deliverables:

1. DISABLED on the live host: enabledPlugins."caveman@caveman"=false at user
   (~/.claude, uncommitted) + committed repo scope; env CAVEMAN_DEFAULT_MODE=off
   retained; marketplace kept for deliberate re-enable. Stops the per-turn
   third-party hook execution (which ran regardless of mode=off) at next
   session start.
2. SEC-017 opened (docs/security-ledger.md): supply-chain re-verify obligation
   pinning SHA 0d95a81 + self-remeasured baseline hashes; register = OPS (no
   D-number per GA-R3; precedent D-129). Open SEC 12->13, reconciled at Stage 4
   close (not an L10 trigger; CURRENT-STATE untouched).
3. Guardrails: repo-lint L11 FAILs on any *.original.md (caveman-compress
   residue), opt-out marker + harness T42-T44 (45/45 PASS); .claude/settings.json
   deny on Bash(*python3 -m scripts*)+Bash(*caveman-compress*); CLAUDE.md
   "Tooling guardrails" prohibiting the compressor against any repo-tracked
   prose. Rejected the proposed plugin-hash-baseline-in-repo-lint (layering
   violation; drift belongs in the SEC-017 re-verify duty).

Harness-config + governance only; no cloud mutation. repo-lint 0 fail;
gauntlet ALL GREEN (77). Changelog: docs/changelog-20260724-caveman-disable.md.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUjEb7onHpdqFHUnio6iVw