+**Session 040 (current) — pick up here.** Research + decision session: deep-dive review of three agent-orchestration repos (oh-my-claudecode, ruflo, ralph — cloned to `~/Documents/code/`) to inform the ZO v2 rearchitecture. 9-agent workflow (7 source-reading lenses + ZO baseline + adversarial synthesis, ~1.06M tokens) catalogued **63 features**, distilled to **12 ranked adoptions** + 6 rearchitecture themes + 11 anti-patterns; all findings persisted to `memory/zo-platform/research/2026-08-12-repo-reviews/` (per-repo markdown + `raw-findings.json`). **Sam decided: adopt all 12.** Work organized into **five layer-based workstreams** (A enforcement plane, B control plane, C execution substrate, D self-learning/platform oracle, E operator experience) — NOT source-repo categories, because features from different repos interlock into single mechanisms. Shipped this session: `plans/zo-v2-rearchitecture.md` (full plan: 6 gated phases, 20-check oracle, anti-scope; + `.gitignore` exception), `docs/reference/v2-rearchitecture.mdx` (all 12 features w/ provenance + repo links; added to mint.json Reference nav), `docs/roadmap.mdx` v2 section (4 pillars + repo credits), website §11 "What's next" (new section w/ 3 repo credit cards; quick start renumbered §12; drawer nav updated). **Verification caveat: no Node.js on this machine** — Astro build NOT run; website change verified via HTML-parser balance check + static-server DOM inspection (section text, all 4 links, drawer entry, renumbering all confirmed rendered). CI/deploy build must confirm. **Same session, part 2 — v2 Phase 1 (WS-A enforcement plane) SHIPPED** on branch `claude/v2-phase1-enforcement` (stacked on the plan branch, PR #106): (A1) `src/zo/contracts.py` — contracts.json emitted at decompose into memory_root (gate_mode precedent), `contract_produced` upgraded from prose placeholders to concrete paths (ownership ∩ required_artifacts, ownership-dir fallback), SubagentStop hook validates deliverables (missing/undersized/pattern/empty-dir) and blocks with a violation list; (A2) drift-guard Stop hook — completion-claim regex over the last assistant transcript message + added TODO/FIXME/NotImplementedError lines in `git diff HEAD` → block (env kill-switch `ZO_DRIFT_GUARD=0`); (A3) PreCompact (STATE flush + checkpoint decision), SessionEnd (summary backfill), PostToolUseFailure (`logs/comms/failures-{date}.jsonl` feed) — specs/memory.md recovery section updated to match (replaces the never-built periodic postToolUse checkpoint design); (A4) sealed-paths PreToolUse guard — memory-root control files (gate_mode/gate_nonce/gate_decision/contracts.json/sealed_paths) + user `sealed_paths` prefixes denied, off-limits write-scope enforced per contracts.json when agent identity present in hook input (plan check 6 AMENDED: no disallowedTools frontmatter exists for subagents and verifiers need scoped writes — path-scoped enforcement instead, fail-open without identity); (A5) nonce gates — minted at GATED (`secrets.token_hex(8)` → `gate_nonce` file), surfaced in `prepare_gate_review`, `apply_human_decision` raises PermissionError without it (single-use, cleared on terminal decisions), new `zo gates approve/reject --nonce` CLI writes DECISION_LOG + comms + `gate_decision` file consumed on next decompose, `/approve`+`/reject` slash commands rewritten to route through the CLI (forgeable hand-edit path CLOSED). All via one shim (`.claude/hooks/zo-hookkit.sh` → `python3 -m zo.hookkit`, venv-preferring, fail-open) + 6 new settings.json wirings. **First-ever hook-script tests** (subprocess + stdin JSON pattern). **854 → 904 passed / 7 skipped, ruff `src/` clean, validate-docs green.** 4 pre-existing integration tests updated to pass the nonce (designed behaviour change). Plan oracle checks 1-5 + 7 have passing seeded-failure tests; check 6 as amended. **Part 3 — live pre-PR verification (Sam-directed):** added always-on hook-trace observability (`logs/hook-trace-{date}.jsonl`, `ZO_HOOK_TRACE=0` off-switch) and verified in the live session itself: sealed-paths DENIED a real Write to gate_mode; drift-guard fired correctly-silent on a real Stop; subagent-stop fired with `agent_type`+`agent_id` in the live payload — **agent-identity open question RESOLVED** (per-agent enforcement keys correctly). Drift-guard now prefers the live payload's `last_assistant_message` (transcript parse = fallback). Caveats logged: PostToolUseFailure doesn't fire on nonzero-exit Bash (infrastructure errors only); PreCompact/SessionEnd not yet observed live; full `zo build` demo needs a machine with the claude CLI (this Mac has none — PR-046). **908 passed / 7 skipped, ruff clean.** **Part 4 — Phases merged + Phase 2 (WS-B control plane) SHIPPED:** #106 + #107 merged to main (stack conflict resolved by merging main into the branch, branch side kept — main had nothing unique). Then WS-B on `claude/v2-phase2-control-plane`: `src/zo/ledger.py` (plan-ledger.json: per-subtask entries w/ synthesized criteria, merge-preserving regeneration, atomic writes, phase_status map); oracle-owned flips wired at the two verified-completion sites (automated gate + nonce-verified human PROCEED), resets on ITERATE/loop-CONTINUE, attempts on mark_subtask_complete, ledger sealed via `_SEALED_DEFAULTS`; `## Stories` plan section + sizing lint in validate_plan (fires only when stories declared — legacy plans untouched); `zo status` renders the control-plane table from the ledger (STATE.md = fallback/projection). Phase-1 hardenings from recon: `contracts.set_active_phase` now atomic; `zo build` exports ZO_MEMORY_ROOT/ZO_DELIVERY_ROOT/ZO_CONTRACTS_PATH so per-project sealing works in delivery sessions. Deferred to Phase 3 (documented): evaluate_loop_state ledger input, session-restore cutover (PR-036 precedence). **929 passed / 7 skipped, ruff clean, validate-docs green. Oracle checks 8-10 seeded tests pass.** **Next:** Phase 2 PR review/merge → Phase 3 (WS-C: watchdog, then fresh-context loop — demo validation needs the Linux box w/ claude CLI, PR-046).
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