docs(reports): archive P2-1 verification and backlog audit review report (Job 143de35c)
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# Cross-Code Review Report — Job 143de35c
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- **Job ID**: 143de35c
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- **Reviewer**: cline
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- **Scope**: Verify P2-1 (B-6: Eliminate temporary script copy and trap leak in `delegate_job_safe`, commit `b490713`) is 100% completed and validated; audit `IMPROVEMENTS.md` backlog for remaining prioritized improvement opportunities (P2-2: C-3a + C-4, P2-3: C-6, P3-1: A-4 M2~M7).
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- **Changes under review**: `(no changes since base commit)` — base commit is `b490713` (the P2-1 fix). Only delta since base is an archived review-report doc (`report-120ffb08.md`, +118 lines, non-code).
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- **Date**: 2026-08-15
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---
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## 1. P2-1 (B-6 / B-12) Verification — ✅ 100% Complete & Validated
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### 1.1 Source Code (`run_loop.sh`)
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`delegate_job_safe()` at `.agents/skills/multi-agent-mux-loop/scripts/run_loop.sh:102-112` implements the fix exactly as documented:
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- **No temporary copy**: The wrapper is executed in-place via `bash "$orig_script" "$@"` (line 105). The previous `.tmp` copy-into-`.agents/skills/...` tree logic is fully removed.
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- **No `trap`**: No `trap _mam_release_guard EXIT INT TERM HUP` exists inside `delegate_job_safe`. The explanatory comment (lines 90-101) documents *why* both the copy and the trap were removed (B-6 tree pollution + B-12 subshell trap-leak firing on `$(...)` command-substitution subshell exit, dropping the loop lock after the first delegated job).
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- **Diagnostics**: A local `rc=0` captures the wrapper's exit code; on non-zero, `log_error` emits the previously-unreachable failure diagnosis (lines 106-110). Callers' own "Failed to register …" branches remain reachable for non-`set -e` paths.
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- **Residual `.tmp` sweep**: Startup sweep of `.../multi-agent-mux-delegate-job.*.tmp` is retained for backwards cleanup of any pre-fix leftovers (confirmed in commit `b490713` diff, `run_loop.sh` +26 lines).
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### 1.2 Commit Hygiene (`b490713`)
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`git show b490713 --stat` — surgical, 4 files only:
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| File | Δ |
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|---|---|
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| `run_loop.sh` | +26/-… |
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| `IMPROVEMENTS.md` | +24 |
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| `LOG.md` | +12 |
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| `tests/test_o3_scoped_guard.py` | +167 |
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No unrelated files touched. Every changed line traces to B-6/B-12. ✅
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### 1.3 Tests
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- `tests/test_o3_scoped_guard.py` + `tests/test_a4_adapter_contract.py` → **30 passed** (includes the 4 new Z-9 behavior-based tests: `test_z9_loop_lock_survives_delegation`, `test_z9_probe_detects_the_defect`, `test_z9_no_tmp_copy_left_in_skill_tree`, `test_z9_exit_code_and_diagnostics_propagation`).
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- `tests/test_b7_diff_untracked.py` → **20 passed** (same `run_loop.sh` slot, confirms no regression).
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- All relevant tests green; the Z-9 suite directly asserts both the "no tmp copy" (B-6) and "loop lock survives delegation" (B-12/D1) behaviors.
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### 1.4 Syntax
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- `bash -n run_loop.sh` → OK
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- `bash -n lib.sh` → OK
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- `bash -n stop_session.sh` → OK
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### 1.5 Documentation (`IMPROVEMENTS.md`)
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- `B-6` section (line 71): marked **✅ 완료 (Stage 1)** — describes in-place execution + residual `.tmp` sweep + failure diagnostics.
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- `B-12` section (line 79): marked **✅ 완료 (P0)** — describes trap removal + Z-9 test replacement.
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- `P2-1` consolidated section (line 125): marked **✅ 완료** — merges B-6 + B-12 with full rationale.
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- Priority table 6.2 row `P2-1 | B-6` aligns with the completed state.
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### 1.6 P2-1 Verdict
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**P2-1 is 100% completed and validated.** Code, tests, syntax, and documentation are consistent and self-corroborating. The fix is minimal, surgical, and behaviorally proven by the Z-9 regression suite.
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---
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## 2. IMPROVEMENTS.md Backlog Audit — Remaining Prioritized Opportunities
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Per the brief, the remaining backlog was audited against the live codebase. The header states **10 unresolved items** (Architecture 2, Edge-cases 5, Orchestration 0, Legacy 3); §6.2 enumerates 12 roadmap rows (some are sub-items / decisions). Current status:
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| Priority | Item | Status (live code audit) | Evidence |
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|---|---|---|---|
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| **P2-2** | **C-3a** (4 empty isolation stubs) + **C-4** (dead symbols) | 🔴 **Not started** — all targets confirmed present | See §2.1, §2.2 |
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| **P2-3** | **C-6** (`stop_session.sh` stale help text) | 🔴 **Not started** — defect confirmed live | See §2.3 |
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| **P3-1** | **A-4 M2~M7** (adapter main migration) | 🟡 **Partially done** — only M0~M1 complete | See §2.4 |
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| **P3-2** | **B-10** (`agent_identities` write path + PyYAML dep) | 🔴 Not started | §6.2 row; depends on A-4 M2 |
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| **P3-3** | **C-3b** (`isolation.root` consumer disposition) | 🔴 Not started | §6.2 row; depends on A-4 M2 |
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| **P4-1** | **B-9** (`LOGS_DIR` import-time cwd) | 🔴 Not started (low impact; 2 mitigations exist) | §6.2 row |
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| **P5-1** | **A-2** (public broker + HMAC) | 🔴 Deferred by user instruction (P5) | §6.2 note |
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| **종결 권고** | **B-5** (`df --output` GNU flag) | ⚪ Recommend close (fallback `df -P` works) | Line 75 |
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| **—** | **B-11** (mount-point ERE interpolation) | 🟡 Split-off recommendation from B-5 residual | Line 75 |
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| **—** | **B-13** (in-flight tooling mutation, Stage 2) | 🟡 Separated Stage 2 task | Line ~85 |
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### 2.1 P2-2 / C-3a — 4 Empty Isolation Stubs (NOT done)
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All 4 stubs remain in `lib.sh` with empty bodies, zero production callers:
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- `provision_isolation()` — `lib.sh:1369`
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- `isolation_lever()` — `lib.sh:1374`
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- `isolation_env_prefix()` — `lib.sh:1381`
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- `isolation_cmd_args()` — `lib.sh:1385`
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Per §6.5, the 5 vacuous tests pinning these stubs (`test_tier1_unit.py` ×3, `test_tier2_component.py` ×1 + 1) are co-removal targets. **C-3b must NOT be touched** (intentionally revived in `b4a1d094`/`44062a63`). ✅ Audit consistent with live code.
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### 2.2 P2-2 / C-4 — Dead Symbols (NOT done, list corrected to 3)
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Live confirmation of the corrected 3-symbol target list:
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- `_REAL_HERDR_PATH` — `lib.sh:126` (assignment + `export` only, no read) ✅ present
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- `TERMINAL_STATUSES` — `multi-agent-mux-delegate-job/scripts/registry.py:38` (definition only, no reference) ✅ present
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- `ISOLATE` — `multi-agent-mux-create/scripts/create_session.sh:57` (assignment only) ✅ present
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**Excluded (per §6.5 correction, correctly left alone):** `_HERDR_SHIM_DIR_PATTERN` is *in use* (`lib.sh:57` → `lib.sh:79`); `local_herdr` already removed. Audit confirms the corrected list matches live code. ⚠️ Risk note: a naive "delete all 7" execution would break shim-path detection — §6.5 correction must be honored.
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### 2.3 P2-3 / C-6 — `stop_session.sh` Stale Help (NOT done, defect live)
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`.agents/skills/multi-agent-mux-stop/scripts/stop_session.sh`:
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- Header comment (line 5): advertises `[--mode soft|hard]`
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- `usage()` (line 41): does **not** list `--mode`
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- Option parser (line 65): `--mode|--capture-id|--graceful)` → falls through to `exit 2` ("unknown arg")
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So the documented `--mode soft|hard` is rejected at runtime. ~3-line fix. ✅ Audit consistent — defect is live and reproducible.
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### 2.4 P3-1 / A-4 — Adapter Layer (PARTIALLY done: M0~M1 only)
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- **M0~M1 ✅ done**: `tests/test_a4_adapter_contract.py` → **3/3 PASS** (PYTHONPATH bootstrap, deploy/CI registration, `own_key` migration; fanout 34→29 per prototype).
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- **M2~M7 🔴 not started**: `artifact_path`/`verify_artifact`, `spawn_spec`/`resume_spec`/`auth_ok`, `discover()`, `stop_session.sh` purge path, `ready_tokens` migration, claude `projects` removal. This is the large (大) remaining structural work; gating decision for B-10 / C-3b disposition happens here.
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### 2.5 Backlog Audit Verdict
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The backlog is **accurate and up-to-date** as of 2026-08-15. All "not started" items were confirmed present in live code; the §6.5 corrections (C-3 split, C-4 list reduction to 3, A-2 cause rewording, B-5/B-11 split) are reflected. No stale/false "completed" claims found. The next executable, dependency-free items are **P2-2 (C-3a + C-4)** and **P2-3 (C-6)** — both small, both reduce regression time / risk.
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---
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## 3. Lint / Behavioral / Loss Review
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Since `(no changes since base commit)`, the review is a re-verification of `b490713` plus a non-code backlog audit:
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- **Lint**: `bash -n` passes on all 3 touched/relevant shell scripts (`run_loop.sh`, `lib.sh`, `stop_session.sh`); no `py_compile` needed (no `.py` changed in b490713 except the test file). ✅
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- **Behavioral**: Z-9 tests (30 passed) + B-7 tests (20 passed) prove no tmp copy, no trap leak, loop-lock survival, and exit-code/diagnostic propagation. ✅
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- **Loss (regression/orphan check)**: `git diff b490713..HEAD --stat` shows only `report-120ffb08.md` (+118) — no code drift, no orphaned symbols introduced, no accidental removals. The b490713 commit removed the copy+trap and added diagnostics + tests; nothing was orphaned by it (the `_mam_release_guard` trap is still installed at loop scope, not inside `delegate_job_safe`). ✅
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No `[ESCALATE: PLANNER]` warranted: P2-1 is a complete bug fix, and the remaining backlog items are already planned and prioritized in `IMPROVEMENTS.md` §6.2 — no re-planning/design-change needed.
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---
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## 4. Summary
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| Check | Result |
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| P2-1 (B-6) tmp-copy elimination | ✅ Complete — in-place `bash "$orig_script"` |
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| P2-1 (B-12) subshell trap-leak fix | ✅ Complete — no `trap` in `delegate_job_safe` |
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| P2-1 tests (Z-9) | ✅ 30 passed |
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| P2-1 syntax (`bash -n`) | ✅ OK |
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| P2-1 commit hygiene | ✅ Surgical (4 files) |
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| Backlog P2-2 (C-3a + C-4) | 🔴 Not started — targets confirmed live (corrected to 3+4) |
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| Backlog P2-3 (C-6) | 🔴 Not started — stale `--mode` help confirmed live |
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| Backlog P3-1 (A-4 M2~M7) | 🟡 M0~M1 done (3/3); M2~M7 pending |
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| Backlog accuracy | ✅ Matches live code; §6.5 corrections honored |
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| Lint / Behavior / Loss | ✅ Clean |
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P2-1 is fully implemented, tested, and documented. The remaining backlog is accurately tracked and correctly prioritized; the next low-cost, dependency-free items are P2-2 and P2-3.
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[VERDICT: PASS]
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