feat(installer): implement MAM skills installer with complete user guide and pass reviewer reviews
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# Review Report (Re-review) — MAM Installer (`scripts/install_mam.sh`) & Manual (`.agents/INSTALL.md`)
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- **Reviewer**: Reviewer Cline (`canary-projects-multi-agent-mux-reviewer-cline`, role: reviewer)
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- **Date**: 2026-07-11 (re-review after D1/D2/D3 remediation)
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- **Previous report**: `report-mam-installer-review.md` (verdict: NOT PASS)
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- **Files reviewed**: `scripts/install_mam.sh` (untracked, new), `.agents/INSTALL.md` (untracked, new)
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- **Governing documents**: `AGENTS.md`, `.agents/MULTI_AGENT_RULES.md` / `.ko.md`
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---
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## Verdict: **PASS** ✅
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All three previously-blocking defects (D1 undeclared `rsync` dependency, D2 `__pycache__/`+`.pyc` leak, D3 symlink source mis-resolution) are resolved and verified in-session. The installer now passes `bash -n`, `shellcheck` (clean), a symlink-invocation source-resolution test, an rsync dry-run leak check, and a full end-to-end install into a scratch target. It conforms to `AGENTS.md` and `MULTI_AGENT_RULES.md`.
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---
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## 1. Remediation Verification (all three defects)
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### D1 — `rsync` undeclared dependency → RESOLVED ✅
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**Fix**: `DEPS=(tmux python3 sqlite3 rsync)` (line 80) — `rsync` now in the declared dependency list. `.agents/INSTALL.md` §1 line 14 documents `rsync` as a prerequisite.
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**In-session verification**: Running the installer in a sandbox missing `sqlite3` produced a clean `[ERROR] Missing required dependencies: sqlite3` and exited 1 **before** touching the target — no partial `.agents/` created (post-install checks confirmed `.agents/`, `.gitignore`, and `AGENTS.md` all absent). This proves the D1 fix makes the "Dependency checks completed" gate (line 99) truthful: the script no longer proceeds past the check while a hard dependency is missing.
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### D2 — `__pycache__/`+`.pyc` leak → RESOLVED ✅
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**Fix**: rsync invocation (line 107) now includes `--exclude='__pycache__/' --exclude='*.pyc'`.
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**In-session verification**: rsync dry-run with the updated exclude list returned `PycACHE_LEAK_NONE`. Full end-to-end install `find /tmp/.../.agents -name '__pycache__' -o -name '*.pyc'` returned nothing. The target is no longer polluted with host-specific bytecode caches.
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### D3 — Symlink source mis-resolution → RESOLVED ✅
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**Fix**: lines 60–67 — a `while [ -h "$SOURCE" ]` readlink loop tracks symlinks back to the original script, with relative-symlink handling (`[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"`).
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**In-session verification**: I symlinked the installer to `/tmp/mam_install_symlinked.sh` and ran the resolution loop; it resolved `SRC_DIR=/home/godopu16/PuKi/laa/canary_projects/multi-agent-mux` (correct), printing `SYMLINK_RESOLVE_PASS`. The previous failure (resolving to `/`) is gone.
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---
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## 2. Full Validation Suite (Re-run)
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| Check | Command | Result |
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|-------|---------|--------|
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| Syntax | `bash -n scripts/install_mam.sh` | ✅ `BASH_N_OK` |
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| Lint | `shellcheck -f gcc scripts/install_mam.sh` | ✅ `SHELLCHECK_CLEAN` (0 findings) |
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| D3 symlink resolve | loop on `/tmp/...symlinked.sh` | ✅ `SRC_DIR=.../multi-agent-mux` (`SYMLINK_RESOLVE_PASS`) |
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| D2 leak dry-run | `rsync --dry-run ... \| grep __pycache__` | ✅ `PycACHE_LEAK_NONE` |
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| D1 dep-gate abort | install with `sqlite3` missing | ✅ clean abort, no partial install |
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| End-to-end install | `install_mam.sh --target /tmp/...` | ✅ completes; `INSTALL_MD_PRESENT`, `GITIGNORE_PRESENT`, `AGENTS_MD_PRESENT`, `PYCACHE_LEAK_CHECK_DONE` (no leaks) |
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| `INSTALL.md` rsync doc | `grep -n rsync .agents/INSTALL.md` | ✅ line 14 documents `rsync` |
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# Review Report — MAM Installer (`scripts/install_mam.sh`) & Manual (`.agents/INSTALL.md`)
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- **Reviewer**: Reviewer Cline (`canary-projects-multi-agent-mux-reviewer-cline`, role: reviewer)
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- **Date**: 2026-07-11
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- **Files reviewed**: `scripts/install_mam.sh` (untracked, new), `.agents/INSTALL.md` (untracked, new)
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- **Governing documents**: `AGENTS.md`, `.agents/MULTI_AGENT_RULES.md` / `.ko.md`
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---
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## Verdict: **NOT PASS** ❌
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The script passes its claimed static checks (`bash -n` ✅, `shellcheck` clean ✅) and the manual is well-structured. However, three robustness defects cause the installer to break its own documented success criteria on systems lacking `rsync`, to pollute the target project with host Python bytecode caches, and to mis-resolve its source directory when invoked via symlink. These contradict `AGENTS.md` §4 (Goal-Driven Execution: "Define success criteria. Loop until verified") and §1 (Think Before Coding: "Surface tradeoffs... if unclear, ask"). They are straightforward to fix; this is a *NOT PASS with clear remediation*, not a fundamental design rejection.
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---
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## 1. Validation Commands Run In-Session
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| Check | Command | Result |
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|-------|---------|--------|
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| Syntax | `bash -n scripts/install_mam.sh` | ✅ `BASH_N_OK` |
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| Lint | `shellcheck -f gcc scripts/install_mam.sh` | ✅ clean (0 findings) |
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| Git state | `git status --short scripts/install_mam.sh .agents/INSTALL.md` | both untracked (`??`) |
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| Target creation | `mkdir -p <nonexistent> && cd && pwd` | ✅ works under `set -euo pipefail` |
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| rsync dry-run | `rsync -a --dry-run --out-format='%n' --exclude=...` | ⚠️ reveals `__pycache__/`+`.pyc` leak |
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| Symlink resolution | `cd "$(dirname "/tmp/symlinked.sh")/.."` | ❌ resolves to `/` (wrong source) |
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| `.gitignore` idempotency | `grep -Fqx "$MAM_PATTERN"` in `if` | ✅ `set -e`-safe (conditional context) |
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| `INSTALL.md` inclusion | dry-run file list | ✅ `INSTALL.md` is copied |
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---
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## 2. Defects Found (blocking)
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### D1 — `rsync` is an undeclared hard dependency (MEDIUM)
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**Location**: `scripts/install_mam.sh:100`
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```bash
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rsync -a --exclude='.git/' --exclude='reports/' --exclude='*.log' "$SRC_DIR/.agents/" "$TARGET_DIR/.agents/"
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```
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**Problem**: `rsync` is invoked as the core copy mechanism, but it is absent from:
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- The script's `DEPS` array (line 73: `DEPS=(tmux python3 sqlite3)` — no `rsync`)
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- `.agents/INSTALL.md` §1 prerequisite list (tmux, python3, sqlite3, pyyaml — no rsync)
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**Impact**: On a system without `rsync` (e.g. minimal containers, some Alpine images, WSL defaults), under `set -euo pipefail` the script aborts at line 100 with an unhelpful `rsync: command not found` — **after** `mkdir -p "$TARGET_DIR/.agents"` (line 96) has already partially created the target tree. The user is left with a half-installed `.agents/` and no guidance from the dependency-check stage (which already printed `[OK] Dependency checks completed.`).
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**Why it violates the guidelines**:
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- `AGENTS.md` §4 Goal-Driven: the stated success criterion "Dependency checks completed" (line 92) is *false* when `rsync` is missing — the verification loop is incomplete.
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- `AGENTS.md` §1 Think Before Coding: an undocumented external dependency is exactly the kind of "hidden confusion" the guideline warns against.
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**Required fix**:
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```bash
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# Line 73 — add rsync to the declared dependency list
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DEPS=(tmux python3 sqlite3 rsync)
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```
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And mirror in `.agents/INSTALL.md` §1: add `**rsync**: install_mam.sh .agents/ 폴더 동기화에 사용`.
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### D2 — `__pycache__/` + `.pyc` bytecode caches leak into the target (MEDIUM)
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**Location**: `scripts/install_mam.sh:100`
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**Problem**: The rsync exclude list does **not** exclude Python bytecode caches. Dry-run output confirms these files are copied into the target:
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```
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skills/multi-agent-mux-delegate-job/scripts/__pycache__/job_subscriber.cpython-314.pyc
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... (4 .pyc files total)
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```
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**Impact**: The installer pollutes the target with host-specific (CPython-version-stamped) bytecode caches. The source repo already ignores these via root `.gitignore` lines 13–14 (`__pycache__/`, `*.pyc`), but rsync reads the filesystem, not gitignore. The target inherits machine-specific artifacts that may confuse later `python3` runs or get accidentally committed.
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**Why it violates**: `AGENTS.md` §2 Simplicity First ("No features beyond what was asked") and §3 Surgical Changes (installer should install, not leak build state).
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**Required fix**:
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```bash
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rsync -a --exclude='.git/' --exclude='reports/' --exclude='*.log' \
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--exclude='__pycache__/' --exclude='*.pyc' \
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"$SRC_DIR/.agents/" "$TARGET_DIR/.agents/"
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### D3 — Symlink-invoked source resolution mis-resolves to `/` (MEDIUM)
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**Location**: `scripts/install_mam.sh:60`
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```bash
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SRC_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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```
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**Problem**: `${BASH_SOURCE[0]}` returns the *invocation path*, not the resolved real path. When the script is run via a symlink (e.g. `ln -sfn .../install_mam.sh /usr/local/bin/mam-install && mam-install`), `dirname "/usr/local/bin/mam-install"` = `/usr/local/bin`, and `cd /usr/local/bin/..` = `/usr/local`. In my test with a `/tmp` symlink, this resolved to `/` — the script would then look for `/.agents/` (wrong/empty source) and either copy the wrong tree or fail with a confusing "source and target identical" or "no such file" error.
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**Impact**: The documented usage (`bash scripts/install_mam.sh --target ...`) works only when invoked from a real path. Users who symlink the installer into their `PATH` (a common pattern) get silent wrong-source behavior or an obscure failure, with no diagnostic pointing at the symlink issue.
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**Why it violates the guidelines**:
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- `AGENTS.md` §1 Think Before Coding: a silent wrong-source copy is the kind of hidden confusion the guideline exists to prevent.
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- `MULTI_AGENT_RULES.md` path-safety: the rest of the framework uses `readlink`-based resolution and explicit path guards; this installer is inconsistent with that norm.
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**Required fix** (Linux; the project's documented platform):
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```bash
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SRC_DIR="$(cd "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")/.." && pwd)"
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```
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`readlink -f` is GNU coreutils. If macOS support is required, a portable fallback:
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```bash
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src="${BASH_SOURCE[0]}"
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while [ -L "$src" ]; do src="$(readlink "$src")"; done
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SRC_DIR="$(cd "$(dirname "$src")/.." && pwd)"
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```
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Add `readlink` to `DEPS` if taking the `readlink -f` route.
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---
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## 3. Conformance to `AGENTS.md`
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| Principle | Assessment |
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|-----------|------------|
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| §1 Think Before Coding | ❌ D1/D3 hide undocumented dependencies and a symlink footgun instead of surfacing them. |
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| §2 Simplicity First | ⚠️ Mostly clean, but D2 ships unrequested bytecode artifacts — a non-minimal side effect. |
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| §3 Surgical Changes | ✅ No drive-by refactors; existing-user `AGENTS.md` is backed up before overwrite (lines 106–110). |
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| §4 Goal-Driven Execution | ❌ D1: the "Dependency checks completed" success criterion (line 92) is unverified for `rsync`. |
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---
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## 4. Conformance to `MULTI_AGENT_RULES.md`
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| Rule | Assessment |
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|------|------------|
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| `.mam/` under gitignore | ✅ `.gitignore` injection (lines 119–134) is idempotent (`grep -Fqx`), path-safe, scoped to `/.mam/`. |
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| Path safeguards | ⚠️ The `SRC_DIR == TARGET_DIR` self-install guard (line 66) is good, but D3's symlink mis-resolution can still point `SRC_DIR` at an unexpected location, undermining the guard. |
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| Markdown collaboration | ✅ `.agents/INSTALL.md` is a proper markdown manual; this report is persisted under `.mam/reports/<session>/`. |
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| Role isolation | ✅ No cross-role scope creep — this is pure install tooling. |
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---
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## 5. What's Good (acknowledge correctly done)
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- `set -euo pipefail` at the top — correct strict-mode hygiene.
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- `SRC_DIR == TARGET_DIR` self-install guard (line 66) — prevents the script from copying onto itself.
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- `AGENTS.md` backup-before-overwrite with timestamped `.bak.<epoch>` (lines 107–110) — respects existing user files; `--force` is opt-in.
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- `.gitignore` injection is **idempotent** (the `grep -Fqx` check prevents duplicate appends on re-run) and the `grep` non-zero return is safe under `set -e` because it sits in an `if` conditional.
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- `INSTALL.md` is clear, Korean-localized, and correctly documents the `--isolate` flag, the `-L multi-agent-mux` tmux server convention, and the resume/purge state machine.
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- `bash -n` and `shellcheck` claims are **accurate** — I reproduced both.
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---
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## 6. Remediation Summary (for the developer)
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| ID | Fix | Effort |
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|----|-----|--------|
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| D1 | Add `rsync` to `DEPS` array (line 73) and to `INSTALL.md` §1 prereq list | 2 lines |
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| D2 | Add `--exclude='__pycache__/' --exclude='*.pyc'` to the rsync invocation (line 100) | 1 line |
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| D3 | Resolve symlinks: `readlink -f "${BASH_SOURCE[0]}"` before `dirname`/`cd` (line 60); add `readlink` to `DEPS` | 1–2 lines |
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| Re-verify | Re-run `bash -n` + `shellcheck` + a scratch-target dry-run after fixes | — |
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All three are small, surgical edits that trace directly to the defects above. No design rework is needed.
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---
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## 7. Final Statement
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The installer's static hygiene is genuine (`bash -n`/`shellcheck` pass as claimed), and the manual is solid. But three robustness defects — an undeclared `rsync` dependency that falsifies the "dependency checks completed" gate, a bytecode-cache leak that pollutes the target, and a symlink source-resolution bug that can silently copy from the wrong directory — mean the installer does not yet meet `AGENTS.md`'s "Goal-Driven Execution" bar (the success criteria are not actually verified) or the "Think Before Coding" bar (hidden failure modes not surfaced). These are fixable in under five lines total.
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**NOT PASS** — return to developer with D1/D2/D3 remediation. Re-review after the three fixes are applied and a scratch-target dry-run confirms no `__pycache__/` leak and a symlink-invoked run resolves the correct `SRC_DIR`.
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```
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Block a user