KB-3026

C2B1-R0 — No-Mutation Proof (READ_ONLY_BOUNDARY = HELD; zero production mutation)

6 min read Revision 1
current-statec2b1-r0no-mutation-proofread-onlyzero-mutationforbidden-action-checklistcontainer-baselinesecret-handling-disciplinesha256-prefix2026-07-21

C2B1-R0 — No-Mutation Proof

Claim: R0 performed zero production mutation. The only writes are the report files in this directory (local working copy, outside production). Verdict boundary read-only = HELD.

1. What was NOT done (forbidden-action checklist — all NEGATIVE)

  • ❌ No Directus user / policy / permission / role / access / token created, updated, or deleted.
  • ❌ No directus_create / directus_update / directus_delete MCP calls (not even loaded/used).
  • ❌ No environment/config/source edit on the VPS (docker/.env, agent-data.env, reconcile/directus-admin.env, environment.sh, compose, cron — all read-only).
  • ❌ No container restart / recreate / stop / start. (Baseline below proves it.)
  • ❌ No credential rotation; no static token changed; no password changed.
  • ❌ No password tried (lockout counter untouched — see §4).
  • ❌ No git stage/commit/reset/clean/stash/checkout/restore/revert (honoring the concurrent-mission notice).
  • ❌ No VPS file write; MCP write_file (allowlisted to /opt/incomex/docs/mcp-writes) was not used.
  • ❌ No secret value printed (see §4).

2. What WAS done (read-only introspection only)

  • SSH (root@vmi3080463): find, ls, grep, sed, awk, stat, du, tail, head — all read.
  • Docker (read): docker ps -a, docker inspect, docker image inspect, docker manifest inspect (remote registry query; returned denied, so no data fetched and nothing changed).
  • docker exec <container> <read-cmd>: printenv, grep, sha256sum, sh -c loops — these run a process inside an already-running container; they do not restart or recreate it and do not change its image ID or RestartCount (proven in §3). No file inside any container was written.
  • PostgreSQL: docker exec postgres psql -c "SELECT ..."SELECT statements only (directus_users, directus_policies, directus_access, directus_roles). No INSERT/UPDATE/DELETE/DDL was issued at any point. (The MCP query_pg tool, had it been used, is AST-validated read-only; here SSH psql was used with SELECT-only statements, verifiable in the session command log.)
  • Local: Read (my own memory files), find/ls/mkdir, and Write (this report set only).

3. Container-state baseline (proves no restart/recreate)

Captured 2026-07-21T06:1x:xxZ, after all measurement docker exec calls. Container IDs and RestartCounts are the pre-existing live values; docker exec cannot alter them:

incomex-agent-api-executor  id=1d841832a6fe  restarts=0   started=2026-06-04T08:46:26Z  running
incomex-agent-data          id=09188c72f327  restarts=0   started=2026-07-17T09:45:44Z  running
incomex-claude-kb           id=b1b40494fe7d  restarts=2   started=2026-07-16T03:25:22Z  running
incomex-claude-mcp          id=c7039e296421  restarts=2   started=2026-07-12T00:45:39Z  running
incomex-directus            id=2245d86d2f6a  restarts=0   started=2026-05-08T09:13:06Z  running
incomex-nginx               id=e50172b59a25  restarts=0   started=2026-06-30T00:44:14Z  running
incomex-nuxt                id=42079c55bf9c  restarts=80  started=2026-07-20T16:20:59Z  running
incomex-qdrant              id=2b5c328f0b4d  restarts=0   started=2026-03-18T07:03:47Z  running
pg-restore-test-20260520…   id=0cbc668c76f9  restarts=0   started=2026-05-20T03:10:55Z  running
postgres                    id=22540b78de8f  restarts=0   started=2026-04-17T05:35:18Z  running
uptime-kuma                 id=81d9f483b123  restarts=0   started=2026-04-08T09:18:38Z  running

incomex-nuxt restarts=80 / started=2026-07-20T16:20:59Z is a pre-existing self-restart pattern (unless-stopped policy; clean exit=0, OOM=false) — NOT caused by R0. All other counters are steady.

4. Secret-handling discipline

  • Token/password equality was established by comparing sha256 prefixes only: shell printf "%s" "$v" | sha256sum vs PG encode(sha256(convert_to(token,'UTF8')),'hex').
  • docker/.env credential values were hashed inside a subshell (( set -a; . .env; set +a; …)) so no value entered any command output. Only len= and sha12= prefixes were emitted.
  • Config files were shown with values masked (sed 's/(TOKEN|PASSWORD|SECRET|KEY)=.../\1=<RED>/').
  • No admin login was attempted (email+password never POSTed) → the 25-consecutive-fail lockout counter on admin@example.com was not touched.

5. The only writes performed (the deliverable)

/Users/nmhuyen/Documents/Manual Deploy/web-test/knowledge/current-state/reports/
  c2b1-r0-bootstrap-admin-containment-decision-2026-07-21/
    00-executive-verdict.md  01-consumer-register.csv  02-capability-map.csv
    03-recreate-readiness-matrix.csv  04-fast-containment-design.md
    05-direct-decomposition-design.md  06-time-risk-comparison.md
    07-owner-decision-packet.md  08-no-mutation-proof.md  manifest.sha256

These are a local working-copy report (mission §10 deliverable), isolated in a new directory, not part of any production service, and not committed to git. Integrity is fixed by manifest.sha256.

READ_ONLY_BOUNDARY = HELD. No provision, repoint, restart, or rotation occurred.

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