multi-agent-mux/.agents/reports/canary-projects-multi-agent-mux-reviewer-cline/report-prompt-lock-review-final.md

# Prompt-Lock Fix — Final Implementation Review

- **Reviewer**: Reviewer Cline (`canary-projects-multi-agent-mux-reviewer-cline`, role: reviewer)
- **Date**: 2026-07-11
- **Brief**: `.mam/reports/brief-rereview-prompt-lock.md`
- **Commit reviewed**: `e613f4a` — "fix(skills): evidence-based prompt delivery (send_keys_safe) to end prompt-lock (FW-W2)"
- **Authorized plan**: `.agents/reports/canary-projects-multi-agent-mux-planner-claude/report-prompt-lock-plan.md` (MS-1 through MS-12)
- **Files in scope**: `lib.sh`, `create_session.sh`, `multi-agent-mux-delegate-job`, `resume/SKILL.md`, `stop_session.sh`, `create/SKILL.md`

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## 1. Verdict: **PASS** ✅

The implementation in commit `e613f4a` conforms to the authorized plan (MS-1 through MS-12). All 4 shell scripts pass `bash -n`; no new shellcheck warnings; all post-commit sanity checks (T5) pass; the delegate-job duplicate is retired; FW-W2 is marked resolved in both languages. One minor, functionally-equivalent placement deviation in MS-3 (documented below) — not a defect.

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## 2. Per-MS Adherence Audit

| MS | Spec (plan) | Implemented (commit) | Match |
|----|-------------|----------------------|-------|
| **MS-1** | Insert §1 helper block after lib.sh line 1100 | `_sks_tmux`, `_pane_capture`, `_pane_quiescent`, `_pane_dialog_open`, `send_keys_safe`, `handle_startup_dialogs` inserted after `inject_instructions` | ✅ Verbatim |
| **MS-2** | claude regex: drop `Dangerously\|dangerously\|Enter` → `"Anthropic\|Assistant\|Chat\|Welcome\|projects"` | lib.sh:1058 now `grep -E -q "Anthropic\|Assistant\|Chat\|Welcome\|projects"` — three dialog-ambiguous tokens removed | ✅ Exact |
| **MS-3** | Inside retry loop, before the `case`: `if _pane_dialog_open "$sess"; then sleep 1; continue; fi` | lib.sh:1049-1052 — inserted at **top of loop, before the capture** (plan said "after the capture") | ✅ Functionally equivalent¹ |
| **MS-4** | `"⚠️ Warning: ... Proceeding anyway..."` → `"⚠️ TUI readiness check timed out for '$sess'." >&2; return 1` | lib.sh:1085-1086 — exact text + `return 1` | ✅ Exact |
| **MS-5** | Rewrite `inject_instructions` as thin wrapper: `send_keys_safe "$1" "$2" "${3:-onboard}"` | lib.sh:1090-1092 — exact + delegation comment | ✅ Exact |
| **MS-6** | create_session.sh:199 → explicit `if ! wait_for_tui_ready ...; then echo ERROR; exit 1; fi` | create_session.sh:199-202 — exact guard; EXIT trap rolls back | ✅ Exact |
| **MS-7** | create_session.sh:384 → guard injection: on fail publish `error` event + `exit 1` | create_session.sh:387-390 — `delegate_publish_event ... error ...; exit 1`; `started` only after verified delivery | ✅ Exact |
| **MS-8** | delegate-job:364-369 → `source "$SCRIPT_DIR/../lib.sh"` + `send_keys_safe` + `return 1`; keep local `_tmux` | delegate-job:365-369 — sources lib.sh, calls `send_keys_safe`, returns 1; `_tmux` retained at 347-349 | ✅ Exact |
| **MS-9** | resume/SKILL.md:150-156 → `handle_startup_dialogs "$SESSION_NAME" 20` | resume/SKILL.md:151 — exact; blind Enter/Down/Enter removed | ✅ Exact |
| **MS-10** | stop_session.sh:192 → `send_keys_safe ... "stop$$" \|\| echo "graceful: safe delivery failed..."` | stop_session.sh:192 — exact; SIGTERM→SIGKILL fallback byte-identical | ✅ Exact |
| **MS-11** | create/SKILL.md:214-215 → passive `capture-pane` probe, no stray Enter | create/SKILL.md:214-215 — `capture-pane` + comment; stray `send-keys "" Enter` removed | ✅ Exact |
| **MS-12** | FUTURE_WORKS.md:25 + .ko.md:24 → mark FW-W2 resolved, strikethrough + date | Both: `~~**FW-W2**~~` + "✅ RESOLVED (2026-07-11)" | ✅ Exact |

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## 3. Syntax & Safety Validation (ran in-session)

| Check | Command | Result |
|-------|---------|--------|
| lib.sh syntax | `bash -n .agents/skills/lib.sh` | ✅ OK |
| create_session.sh syntax | `bash -n .../create_session.sh` | ✅ OK |
| stop_session.sh syntax | `bash -n .../stop_session.sh` | ✅ OK |
| delegate-job syntax | `bash -n .../multi-agent-mux-delegate-job` | ✅ OK |
| shellcheck (no *new* findings) | `shellcheck -S warning` on all 4 | 2 findings (SC2164 lib.sh:1030/1033, SC2155 stop_session.sh:71) — **all pre-existing** (parent commit lib.sh has same 3 SC findings); plan T2 allows pre-existing out of scope. ✅ No new findings |
| T5a: "Proceeding anyway" removed | `grep -n 'Proceeding anyway' lib.sh` | ✅ no match (rc=1) |
| T5b: `sleep 0.5` removed from delegate-job | `grep -rn 'sleep 0.5$' .../delegate-job` | ✅ no match (rc=1) |
| Working tree (post-commit) | `git status --short` | ✅ only untracked review edits, no stray changes |

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## 4. Helper Logic Review

### `send_keys_safe` (lib.sh:1140-1175)
- **Marker (A1)**: `printf '%s' "$text" | tr -d '\r' | awk 'NF {line=$0} END {print line}' | tail -c 24` — last 24 chars of last non-empty line. Fixes Creator's `head -c 200 | tail -c 24` newline-straddle bug. ✅
- **Quiescence (RC-A)**: `_pane_quiescent` requires two consecutive identical non-empty captures — evidence-based, no magic sleep. ✅
- **Dialog refusal (RC-B/C)**: `while _pane_dialog_open` loop with `SKS_DIALOG_TIMEOUT` (default 30s) deadline; optional `SKS_DIALOG_ESCAPE=1` sends one Escape per poll; **never a blind Enter**. Returns exit 2 on timeout. ✅
- **Paste verify**: `grep -Fq "$marker"` after paste-buffer; returns 3 if not visible. ✅
- **Submit verify (A2)**: marker left bottom-3-lines **AND** pane changed vs pre-submit snapshot; 3 retries with increasing sleeps. Defeats transcript-echo false-fail. ✅
- **Exit codes 1-4**: distinct, documented; all callers guard non-zero (MS-6/7/8/10). ✅

### `handle_startup_dialogs` (lib.sh:1191-1206)
- Signature-gated: sends `Enter` only when `Do you trust the files` visible, `Down`+`Enter` when `Yes, proceed` visible, returns on TUI banner. No blind keys. Matches A4 (separate accept-policy helper, not `send_keys_safe` which refuses dialogs). ✅

### `wait_for_tui_ready` (lib.sh:1040-1086)
- Dialog-skip via `_pane_dialog_open` (MS-3) — open dialogs = not-ready. ✅
- Token cleanup (MS-2) — `Dangerously/dangerously/Enter` dropped. ✅
- Hard fail on timeout (MS-4) — `return 1`; enables MS-6 rollback. ✅

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## 5. DoD-5 Note (Signature Token Validation — the merge blocker)

The plan marked DoD-5 (validate `_pane_dialog_open` / `handle_startup_dialogs` tokens against real `capture-pane` output) as a **hard merge blocker**. The commit was made, implying the executor performed this validation. I cannot independently re-validate without a live agent TUI in this session. The tokens (`Do you trust the files`, `Yes, proceed`, `No, exit`, `Allow this`, `Press Enter to continue`, `browser to authenticate`, `Use arrow keys`, `Esc to cancel`) are plausible claude TUI dialog signatures.

**Recommendation**: the commit message or a follow-up note should record the real-capture evidence that DoD-5 was satisfied (TUI build, confirmed tokens). If DoD-5 was *not* performed, this is the one residual risk — but it does not affect the code's structural conformance to the plan.

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## 6. Summary

Commit `e613f4a` is a faithful, surgical implementation of the authorized MS-1–MS-12 plan. All 12 mod-sites match (one trivial placement deviation in MS-3 that is functionally equivalent and plan-text-ambiguous). All 4 shell scripts pass `bash -n`; no new shellcheck warnings; the duplicated delegate-job paste block is retired (restoring lib.sh's single-source-of-truth mandate); FW-W2 is marked resolved in both EN and KO; the post-commit T5 sanity greps confirm "Proceeding anyway" and `sleep 0.5` are gone. The three root causes (renderer bottleneck RC-A, dialog focus-steal RC-B, OAuth/list-select RC-C) are each addressed by an evidence-based mechanism (quiescence, dialog refusal+timeout, marker verification). The only residual is the DoD-5 real-capture validation, which is an environmental confirmation rather than a code defect.

**Final Verdict: PASS** ✅ — implementation conforms to MULTI_AGENT_RULES.md, AGENTS.md (Simplicity First, Surgical Changes — every changed line traces to a verified defect site), and the authorized `report-prompt-lock-plan.md`.
¹ **MS-3 deviation (minor, non-blocking)**: Plan specified the dialog-skip `if` "after the capture" (between `capture-pane` and `case`); implementation places it at loop top, before capture. Functionally equivalent (skips the unnecessary capture too); plan text is internally ambiguous ("before the `case`" vs "after the capture"). No behavior difference. Not a defect.