msd-core/gsd-core/workflows/code-review.md

Review source files changed during a phase for bugs, security issues, and code quality problems. Computes file scope (--files override > SUMMARY.md > git diff fallback), checks config gate, spawns gsd-code-reviewer agent, commits REVIEW.md, and presents results to user. When --fix is passed, delegates to code-review-fix.md after review to auto-apply findings via gsd-code-fixer.

<required_reading> Read all files referenced by the invoking prompt's execution_context before starting. </required_reading>

<available_agent_types>

• gsd-code-reviewer: Reviews source files for bugs and quality issues
• gsd-code-fixer: Applies fixes to code review findings (used via dispatch_fix → code-review-fix.md when --fix is passed) </available_agent_types>

Parse arguments and load project state:

_GSD_SHIM_NAME="gsd-tools.cjs"; _GSD_RUNTIME_ROOT="${RUNTIME_DIR:-$(git rev-parse --show-toplevel 2>/dev/null || pwd)}"; GSD_TOOLS="${_GSD_RUNTIME_ROOT}/gsd-core/bin/${_GSD_SHIM_NAME}"; if [ -f "$GSD_TOOLS" ]; then gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${_GSD_RUNTIME_ROOT}/.claude/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${_GSD_RUNTIME_ROOT}/.claude/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${_GSD_RUNTIME_ROOT}/.codex/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${_GSD_RUNTIME_ROOT}/.codex/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif command -v gsd-tools >/dev/null 2>&1; then GSD_TOOLS="$(command -v gsd-tools)"; gsd_run() { "$GSD_TOOLS" "$@"; }; elif [ -f "${CLAUDE_CONFIG_DIR:-$HOME/.claude}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${CLAUDE_CONFIG_DIR:-$HOME/.claude}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${HERMES_HOME:-$HOME/.hermes}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${HERMES_HOME:-$HOME/.hermes}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${CURSOR_CONFIG_DIR:-$HOME/.cursor}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${CURSOR_CONFIG_DIR:-$HOME/.cursor}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${CODEX_HOME:-$HOME/.codex}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${CODEX_HOME:-$HOME/.codex}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${GEMINI_CONFIG_DIR:-$HOME/.gemini}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${GEMINI_CONFIG_DIR:-$HOME/.gemini}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${COPILOT_CONFIG_DIR:-$HOME/.copilot}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${COPILOT_CONFIG_DIR:-$HOME/.copilot}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${WINDSURF_CONFIG_DIR:-$HOME/.codeium/windsurf}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${WINDSURF_CONFIG_DIR:-$HOME/.codeium/windsurf}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${AUGMENT_CONFIG_DIR:-$HOME/.augment}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${AUGMENT_CONFIG_DIR:-$HOME/.augment}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${TRAE_CONFIG_DIR:-$HOME/.trae}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${TRAE_CONFIG_DIR:-$HOME/.trae}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${QWEN_CONFIG_DIR:-$HOME/.qwen}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${QWEN_CONFIG_DIR:-$HOME/.qwen}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${CODEBUDDY_CONFIG_DIR:-$HOME/.codebuddy}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${CODEBUDDY_CONFIG_DIR:-$HOME/.codebuddy}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${CLINE_CONFIG_DIR:-$HOME/.cline}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${CLINE_CONFIG_DIR:-$HOME/.cline}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${GROK_AGENTS_HOME:-$HOME/.agents}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${GROK_AGENTS_HOME:-$HOME/.agents}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${ANTIGRAVITY_CONFIG_DIR:-$HOME/.gemini/antigravity}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${ANTIGRAVITY_CONFIG_DIR:-$HOME/.gemini/antigravity}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${OPENCODE_CONFIG_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/opencode}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${OPENCODE_CONFIG_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/opencode}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; elif [ -f "${KILO_CONFIG_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/kilo}/gsd-core/bin/${_GSD_SHIM_NAME}" ]; then GSD_TOOLS="${KILO_CONFIG_DIR:-${XDG_CONFIG_HOME:-$HOME/.config}/kilo}/gsd-core/bin/${_GSD_SHIM_NAME}"; gsd_run() { node "$GSD_TOOLS" "$@"; }; else echo "ERROR: gsd-tools.cjs not found at $GSD_TOOLS and gsd-tools is not on PATH. Run: npx -y @opengsd/gsd-core@latest --claude --local" >&2; exit 1; fi; if [ -n "${CLAUDE_ENV_FILE:-}" ] && [ -n "${GSD_TOOLS:-}" ]; then printf "export PATH='%s':\"\$PATH\"\n" "${GSD_TOOLS%/*}" >> "$CLAUDE_ENV_FILE" 2>/dev/null || true; fi
PHASE_ARG="${1}"

# Parse all code-review flags into a structured IR via code-review-flags.cjs.
# This is the canonical flag-parsing surface — do not replicate inline bash parsing
# for --fix/--all/--auto here; the module handles all flag extraction and implication
# logic (e.g., --all and --auto imply --fix). Resolved BEFORE the init call below so
# the section-manifest gate forwards the RESOLVED (post-implication) fix decision, not
# just a literal --fix token check.
FLAGS_JSON=$(node -e "
  const { parseCodeReviewFlags } = require('./gsd-core/bin/lib/code-review-flags.cjs');
  const flags = parseCodeReviewFlags(process.argv.slice(1));
  process.stdout.write(JSON.stringify(flags));
" -- "$@" 2>/dev/null)

# Extract individual flag values from the IR
FIX_FLAG=$(echo "$FLAGS_JSON" | node -e "process.stdout.write(String(JSON.parse(require('fs').readFileSync('/dev/stdin','utf-8')).fix))")
FIX_ALL=$(echo "$FLAGS_JSON" | node -e "process.stdout.write(String(JSON.parse(require('fs').readFileSync('/dev/stdin','utf-8')).all))")
FIX_AUTO=$(echo "$FLAGS_JSON" | node -e "process.stdout.write(String(JSON.parse(require('fs').readFileSync('/dev/stdin','utf-8')).auto))")
DEPTH_OVERRIDE=$(echo "$FLAGS_JSON" | node -e "process.stdout.write(JSON.parse(require('fs').readFileSync('/dev/stdin','utf-8')).depth)")
FILES_OVERRIDE=$(echo "$FLAGS_JSON" | node -e "process.stdout.write(JSON.parse(require('fs').readFileSync('/dev/stdin','utf-8')).files)")

# Forward the resolved fix decision (--fix itself, or --all/--auto implying it) to
# init.code-review so section_manifest's flag:--fix gating (dispatch-fix section)
# matches code-review-flags.cjs's own implication logic rather than a raw token scan.
FIX_PARAM=""
if [ "$FIX_FLAG" = "true" ]; then FIX_PARAM="--fix"; fi

INIT=$(gsd_run query init.code-review "${PHASE_ARG}" $FIX_PARAM)
if [[ "$INIT" == @file:* ]]; then INIT=$(cat "${INIT#@file:}"); fi
AGENT_SKILLS_REVIEWER=$(gsd_run query agent-skills gsd-code-reviewer)
# #2072: resolve the routed model so model_overrides / models.verification are honored
# (the resolver maps gsd-code-reviewer → phaseType "verification"); thread it below.
REVIEWER_MODEL=$(gsd_run query resolve-model gsd-code-reviewer --raw)

Parse from init JSON: phase_found, phase_dir, phase_number, phase_name, padded_phase, commit_docs, fallow_enabled, fallow_scope, fallow_profile, fallow_mcp, fallow_max_crap.

Input sanitization (defense-in-depth):

# Validate PADDED_PHASE contains only digits and optional dot (e.g., "02", "03.1")
if ! [[ "$PADDED_PHASE" =~ ^[0-9]+(\.[0-9]+)?$ ]]; then
  echo "Error: Invalid phase number format: '${PADDED_PHASE}'. Expected digits (e.g., 02, 03.1)."
  # Exit workflow
fi

Phase validation (before config gate): If phase_found is false, report error and exit:

Error: Phase ${PHASE_ARG} not found. Run /gsd:progress to see available phases.

This runs BEFORE config gate check so user errors are surfaced immediately regardless of config state.

If FILES_OVERRIDE is set, split by comma into array:

if [ -n "$FILES_OVERRIDE" ]; then
  IFS=',' read -ra FILES_ARRAY <<< "$FILES_OVERRIDE"
fi

Check if code review is active via the capability registry:

EXECUTE_POST_HOOKS_JSON=$(gsd_run loop render-hooks execute:post --raw)

Resolve active step hooks from EXECUTE_POST_HOOKS_JSON where kind == "step" and ref.skill == "code-review".

If no active code-review step hook exists:

Code review skipped (code-review capability inactive)

Exit workflow.

Default is active through the Capability Registry schema — only skip when the registry resolves no active code-review step hook. This check runs AFTER phase validation so invalid phase errors are shown first.

Determine review depth with priority order:

1. DEPTH_OVERRIDE from --depth flag (highest priority)
2. Config value: gsd-tools.cjs query config-get workflow.code_review_depth 2>/dev/null
3. Default: "standard"

if [ -n "$DEPTH_OVERRIDE" ]; then
  REVIEW_DEPTH="$DEPTH_OVERRIDE"
else
  CONFIG_DEPTH=$(gsd_run query config-get workflow.code_review_depth 2>/dev/null || echo "")
  REVIEW_DEPTH="${CONFIG_DEPTH:-standard}"
fi

Validate depth value:

case "$REVIEW_DEPTH" in
  quick|standard|deep)
    # Valid
    ;;
  *)
    echo "Warning: Invalid depth '${REVIEW_DEPTH}'. Valid values: quick, standard, deep. Using 'standard'."
    REVIEW_DEPTH="standard"
    ;;
esac

Three-tier scoping with explicit precedence:

Tier 1 — --files override (highest precedence per D-08):

If FILES_OVERRIDE is set (from --files flag):

if [ -n "$FILES_OVERRIDE" ]; then
  REVIEW_FILES=()
  REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null)
  
  for file_path in "${FILES_ARRAY[@]}"; do
    # Security: validate path is within repository (prevent path traversal)
    ABS_PATH=$(realpath -m "${file_path}" 2>/dev/null || echo "${file_path}")
    if [[ "$ABS_PATH" != "$REPO_ROOT"* ]]; then
      echo "Error: File path outside repository, skipping: ${file_path}"
      continue
    fi
    
    # Validate path exists (relative to repo root)
    if [ -f "${REPO_ROOT}/${file_path}" ] || [ -f "${file_path}" ]; then
      REVIEW_FILES+=("$file_path")
    else
      echo "Warning: File not found, skipping: ${file_path}"
    fi
  done
  
  echo "File scope: ${#REVIEW_FILES[@]} files from --files override"
fi

Skip SUMMARY/git scoping entirely when --files is provided.

Tier 2 — SUMMARY.md extraction (primary per D-01):

If --files NOT provided:

if [ -z "$FILES_OVERRIDE" ]; then
  SUMMARIES=$(ls "${PHASE_DIR}"/*-SUMMARY.md 2>/dev/null)
  REVIEW_FILES=()
  
  if [ -n "$SUMMARIES" ]; then
    for summary in $SUMMARIES; do
      # Extract key_files.created and key_files.modified using node for reliable YAML parsing
      # This avoids fragile awk parsing that breaks on indentation differences
      EXTRACTED=$(node -e "
        const fs = require('fs');
        const content = fs.readFileSync('$summary', 'utf-8');
        const match = content.replace(/\r\n/g, '\n').match(/^---\n([\s\S]*?)\n---/);
        if (!match) { process.exit(0); }
        const yaml = match[1];
        const files = [];
        let inSection = null;
        for (const line of yaml.split('\n')) {
          if (/^\s+created:/.test(line)) { inSection = 'created'; continue; }
          if (/^\s+modified:/.test(line)) { inSection = 'modified'; continue; }
          if (/^\s*[\w-]+:/.test(line) && !/^\s*-/.test(line)) { inSection = null; continue; }
          if (inSection && /^\s+-\s+(.+)/.test(line)) {
            let raw = line.match(/^\s+-\s+(.+)/)[1].trim();
            raw = raw.replace(/^['"]|['"]$/g, '');
            raw = raw.replace(/\s+\([^)]*\)\s*$/, '');
            raw = raw.split(/\s+—\s/)[0].trim();
            // #2666: accept root-level paths (no `/`) and known extensionless build
            // files, not only nested paths with a trailing extension. The pre-fix
            // guard required BOTH a directory separator AND a trailing dot-extension,
            // which silently dropped every repository-root file (Dockerfile,
            // renovate.json, AGENTS.md, package.json, .gitlab-ci.yml, …) and every
            // extensionless build file anywhere in the tree (**/Dockerfile, **/Makefile).
            // Prose bullets are rejected by the known-filename / has-extension
            // distinction, with the post-processing existence check (`[ -f ]`) as a
            // backstop — a prose string is never a real file on disk.
            const KNOWN_EXTENSIONLESS_BUILD_FILES = new Set([
              'dockerfile', 'containerfile', 'makefile', 'justfile', 'procfile',
            ]);
            const hasExtension = /\.[A-Za-z0-9]+$/.test(raw);
            const basename = raw.split('/').pop().toLowerCase();
            if (hasExtension || KNOWN_EXTENSIONLESS_BUILD_FILES.has(basename)) {
              files.push(raw);
            }
          }
        }
        if (files.length) console.log(files.join('\n'));
      " 2>/dev/null)
      
      # Add extracted files to REVIEW_FILES array
      if [ -n "$EXTRACTED" ]; then
        while IFS= read -r file; do
          if [ -n "$file" ]; then
            REVIEW_FILES+=("$file")
          fi
        done <<< "$EXTRACTED"
      fi
    done
    
    if [ ${#REVIEW_FILES[@]} -eq 0 ]; then
      echo "Warning: SUMMARY artifacts found but contained no file paths. Falling back to git diff."
    fi
  fi
fi

Tier 3 — Git diff fallback (per D-02) and SUMMARY/diff cross-check (per #2666):

If no SUMMARY.md files found OR no files extracted from them, fall back to the git diff. Additionally, whenever a reliable diff base is available, cross-check the SUMMARY scope against the diff and warn about (then add) any changed files the SUMMARY extractor did not surface — so a partial SUMMARY result can no longer silently mask the rest of the phase.

# Compute diff base from phase commits — fail closed if no reliable base found.
# #2989: anchor the grep to the phase-mention convention ("Phase N" / "phase N")
# so a bare digit substring doesn't match version strings, dates, issue refs,
# or other phases' numbers. When no commit genuinely references the phase, this
# yields empty and the fail-closed warning below actually fires.
# #3191: the trailing boundary is the POSIX class ([^[:alnum:]_]|$), NOT \b —
# \b is not a POSIX ERE token, so under --extended-regexp it silently matches
# nothing on macOS regex(3), making this fallback dead on Apple platforms.
PHASE_COMMITS=$(git log --oneline --all --grep="[Pp]hase ${PADDED_PHASE}([^[:alnum:]_]|$)" --extended-regexp --format="%H" 2>/dev/null)
DIFF_BASE=""
if [ -n "$PHASE_COMMITS" ]; then
  DIFF_BASE=$(echo "$PHASE_COMMITS" | tail -1)^
  # Verify the parent commit exists (first commit in repo has no parent)
  if ! git rev-parse "${DIFF_BASE}" >/dev/null 2>&1; then
    DIFF_BASE=$(echo "$PHASE_COMMITS" | tail -1)
  fi
fi

if [ ${#REVIEW_FILES[@]} -eq 0 ]; then
  # Full git-diff fallback (per D-02): SUMMARY scoping yielded nothing.
  if [ -n "$DIFF_BASE" ]; then
    # Run git diff with specific exclusions (per D-03)
    DIFF_FILES=$(git diff --name-only "${DIFF_BASE}..HEAD" -- . \
      ':!.planning/' ':!ROADMAP.md' ':!STATE.md' \
      ':!*-SUMMARY.md' ':!*-VERIFICATION.md' ':!*-PLAN.md' \
      ':!package-lock.json' ':!yarn.lock' ':!Gemfile.lock' ':!poetry.lock' 2>/dev/null)

    while IFS= read -r file; do
      [ -n "$file" ] && REVIEW_FILES+=("$file")
    done <<< "$DIFF_FILES"

    echo "File scope: ${#REVIEW_FILES[@]} files from git diff (base: ${DIFF_BASE})"
  else
    # Fail closed — no reliable diff base found. Do not use arbitrary HEAD~N.
    echo "Warning: No phase commits found for '${PADDED_PHASE}'. Cannot determine reliable diff scope."
    echo "Use --files flag to specify files explicitly: /gsd:code-review ${PHASE_ARG} --files=file1,file2,..."
  fi
elif [ -n "$DIFF_BASE" ]; then
  # #2666 cross-check: SUMMARY yielded a non-empty (possibly partial) scope.
  # Warn about — and add — any changed files the SUMMARY extractor did not surface,
  # so a partial result can no longer silently ship an incomplete review scope.
  DIFF_FILES=$(git diff --name-only "${DIFF_BASE}..HEAD" -- . \
    ':!.planning/' ':!ROADMAP.md' ':!STATE.md' \
    ':!*-SUMMARY.md' ':!*-VERIFICATION.md' ':!*-PLAN.md' \
    ':!package-lock.json' ':!yarn.lock' ':!Gemfile.lock' ':!poetry.lock' 2>/dev/null)

  # Build a newline-delimited list of already-scoped files for exact membership
  # testing (portable — bash 3.2 on macOS has no associative arrays). grep -Fxq
  # matches the WHOLE line exactly, so a short basename (e.g. root `Dockerfile`)
  # does NOT substring-match a longer scoped path (e.g. `docker/Dockerfile`).
  IN_SCOPE=$(printf '%s\n' "${REVIEW_FILES[@]}")

  MISSING_FROM_SUMMARY=()
  while IFS= read -r file; do
    [ -z "$file" ] && continue
    # Exact whole-line match; grep nonzero-exit => not in scope.
    if printf '%s\n' "${REVIEW_FILES[@]}" | grep -Fxq -- "$file" 2>/dev/null; then
      : # already scoped
    else
      MISSING_FROM_SUMMARY+=("$file"); REVIEW_FILES+=("$file")
    fi
  done <<< "$DIFF_FILES"

  if [ ${#MISSING_FROM_SUMMARY[@]} -gt 0 ]; then
    echo "Warning: SUMMARY scope was missing ${#MISSING_FROM_SUMMARY[@]} changed file(s) the git diff surfaced; adding them to the review scope:"
    printf '  - %s\n' "${MISSING_FROM_SUMMARY[@]}"
  fi
fi

Post-processing (all tiers):

1. Expand tilde paths: SUMMARY.md key-files entries may record a ~/...-prefixed path (e.g. ~/.claude/gsd-core/workflows/verify-work.md). Bash only tilde-expands a literal ~ written in source text, never one arriving as the value of an already-expanded variable, so every later [ -f "$file" ] check must see a real, expanded path or it misclassifies the file as deleted.

EXPANDED_FILES=()
for file in "${REVIEW_FILES[@]}"; do
  case "$file" in
    "~/"*) file="${HOME}${file#\~}" ;;
  esac
  EXPANDED_FILES+=("$file")
done
REVIEW_FILES=("${EXPANDED_FILES[@]}")

2. Apply exclusions (per D-03): Remove paths matching planning artifacts

FILTERED_FILES=()
for file in "${REVIEW_FILES[@]}"; do
  # Skip planning directory and specific artifacts
  if [[ "$file" == .planning/* ]] || \
     [[ "$file" == ROADMAP.md ]] || \
     [[ "$file" == STATE.md ]] || \
     [[ "$file" == *-SUMMARY.md ]] || \
     [[ "$file" == *-VERIFICATION.md ]] || \
     [[ "$file" == *-PLAN.md ]]; then
    continue
  fi
  FILTERED_FILES+=("$file")
done
REVIEW_FILES=("${FILTERED_FILES[@]}")

3. Filter deleted files: Remove paths that don't exist on disk

EXISTING_FILES=()
DELETED_COUNT=0
for file in "${REVIEW_FILES[@]}"; do
  if [ -f "$file" ]; then
    EXISTING_FILES+=("$file")
  else
    DELETED_COUNT=$((DELETED_COUNT + 1))
  fi
done
REVIEW_FILES=("${EXISTING_FILES[@]}")

if [ $DELETED_COUNT -gt 0 ]; then
  echo "Filtered $DELETED_COUNT deleted files from review scope"
fi

4. Deduplicate: Remove duplicate paths (portable — bash 3.2+ compatible, handles spaces in paths)

DEDUPED=()
while IFS= read -r line; do
  [ -n "$line" ] && DEDUPED+=("$line")
done < <(printf '%s\n' "${REVIEW_FILES[@]}" | sort -u)
REVIEW_FILES=("${DEDUPED[@]}")

5. Sort: Alphabetical sort for reproducible agent input (already sorted by sort -u above)

Log final scope and warn if large:

if [ -n "$FILES_OVERRIDE" ]; then
  TIER="--files override"
elif [ -n "$SUMMARIES" ] && [ ${#REVIEW_FILES[@]} -gt 0 ]; then
  TIER="SUMMARY.md"
else
  TIER="git diff"
fi
echo "File scope: ${#REVIEW_FILES[@]} files from ${TIER}"

# Warn if file count is very large — may exceed agent context or produce superficial review
if [ ${#REVIEW_FILES[@]} -gt 50 ]; then
  echo "Warning: ${#REVIEW_FILES[@]} files is a large review scope."
  echo "Consider using --files to narrow scope, or --depth=quick for a faster pass."
  if [ "$REVIEW_DEPTH" = "deep" ]; then
    echo "Switching from deep to standard depth for large file count."
    REVIEW_DEPTH="standard"
  fi
fi

If REVIEW_FILES is empty: ``` No source files changed in phase ${PHASE_ARG}. Skipping review. ``` Exit workflow. Do NOT spawn agent or create REVIEW.md. Optional structural cross-module pass powered by fallow.

Parse fallow_enabled, fallow_scope, fallow_profile, fallow_mcp, fallow_max_crap from the init JSON as FALLOW_ENABLED, FALLOW_SCOPE, FALLOW_PROFILE, FALLOW_MCP, FALLOW_MAX_CRAP. These are resolved once by init.code-review at init time — consuming the pre-resolved values here (instead of a config-get call inside this step) avoids gating this section's own inclusion on a fact its own body would otherwise compute (see state:fallow-enabled in docs/reference/workflow-fragments.md).

Defaults are fail-closed and opt-in:

• enabled=false (skip entirely)
• scope=phase
• profile=standard (maps to --max-crap 30; minimal=50, standard=30, strict=15 — fallow has no native profile concept)
• mcp=false

If section_manifest is null or "structural-pre-pass" is in its included list: read and execute gsd-core/workflows/code-review/steps/structural-pre-pass.md. Otherwise skip — do not read the file.

When disabled, set:

FALLOW_JSON_PATH=""

Compute the review output path: ```bash REVIEW_PATH="${PHASE_DIR}/${PADDED_PHASE}-REVIEW.md" ```

Compute DIFF_BASE for agent context (in case agent needs it). #3191: this must be the SAME anchored, POSIX-portable derivation the Tier-3 scope step uses — the reviewer agent consumes diff_base exactly when files: is empty, i.e. the same fail-closed scenario Tier 3 protects, so a divergent unanchored recomputation here re-arms the mis-scoping one tier down:

PHASE_COMMITS=$(git log --oneline --all --grep="[Pp]hase ${PADDED_PHASE}([^[:alnum:]_]|$)" --extended-regexp --format="%H" 2>/dev/null)
if [ -n "$PHASE_COMMITS" ]; then
  DIFF_BASE=$(echo "$PHASE_COMMITS" | tail -1)^
  # Verify the parent commit exists (first commit in repo has no parent)
  if ! git rev-parse "${DIFF_BASE}" >/dev/null 2>&1; then
    DIFF_BASE=$(echo "$PHASE_COMMITS" | tail -1)
  fi
else
  DIFF_BASE=""
fi

Build required_reading block for agent:

FILES_TO_READ=""
for file in "${REVIEW_FILES[@]}"; do
  FILES_TO_READ+="- ${file}\n"
done

Build config block for agent:

CONFIG_FILES=""
for file in "${REVIEW_FILES[@]}"; do
  CONFIG_FILES+="  - ${file}\n"
done

Build structural findings block for agent:

STRUCTURAL_FINDINGS_BLOCK=""
MAX_FINDINGS_SIZE=50000
if [ -n "$FALLOW_JSON_PATH" ] && [ -f "$FALLOW_JSON_PATH" ]; then
  # Normalize fallow's raw report into the compact {summary, findings[]} contract
  # the reviewer consumes (real fallow schema -> normalized findings).
  FALLOW_NORMALIZED_PATH="${PHASE_DIR}/FALLOW-normalized.json"
  FALLOW_SRC="$FALLOW_JSON_PATH" FALLOW_OUT="$FALLOW_NORMALIZED_PATH" node -e "
    const fs = require('fs');
    const { normalizeFallowReportFile } = require('./gsd-core/bin/lib/fallow-runner.cjs');
    const n = normalizeFallowReportFile(process.env.FALLOW_SRC);
    fs.writeFileSync(process.env.FALLOW_OUT, JSON.stringify(n, null, 2));
  " 2>/dev/null && FALLOW_EMBED_PATH="$FALLOW_NORMALIZED_PATH" || FALLOW_EMBED_PATH="$FALLOW_JSON_PATH"
  FALLOW_JSON_SIZE=$(wc -c < "$FALLOW_EMBED_PATH" | tr -d '[:space:]')
  if [ "$FALLOW_JSON_SIZE" -le "$MAX_FINDINGS_SIZE" ]; then
    # Escape any literal closing tag before embedding; the closing tag literal is escaped to prevent prompt-structure breakage if a fallow finding's file path or message contains the sequence.
    SAFE_FALLOW_JSON=$(sed 's#</structural_findings>#<\/structural_findings>#g' "$FALLOW_EMBED_PATH")
    STRUCTURAL_FINDINGS_BLOCK=$(printf '<structural_findings>\n%s\n</structural_findings>\n' "$SAFE_FALLOW_JSON")
  else
    echo "Warning: skipping structural findings embed (${FALLOW_JSON_SIZE} bytes > ${MAX_FINDINGS_SIZE} bytes). Re-run with narrower scope/profile if needed."
  fi
fi

Spawn the gsd-code-reviewer agent:

Print: ◆ Spawning code reviewer... (runs in a subagent — no output until it returns, ~1–5 min; expected, not a freeze)

Runtime-aware dispatch (#2508 Phase 4). GSD workflows dispatch specialized subagents by role. Before dispatching on a built-in-only runtime (kimi-code — three built-ins only), resolve the role to a built-in via gsd_run query resolve-dispatch-type --requested <role> --raw. On named-dispatch runtimes (Claude/OpenCode/…) the role is returned unchanged; on kimi-code it maps to coder/explore/plan by role-suffix. The persona rides ${AGENT_SKILLS_<ROLE>} (Phase 3) regardless. See @gsd-core/references/runtime-aware-dispatch.md.

Model omission (#2517). Omit the model parameter entirely when the value it would carry (REVIEWER_MODEL) is "inherit" or empty. An empty value 404s on runtimes without native tier aliases — the default on non-Claude runtimes. Omitting it inherits the orchestrator's model. See @gsd-core/references/model-profile-resolution.md.

Agent(subagent_type="gsd-code-reviewer", model="{REVIEWER_MODEL}", prompt="
<required_reading>
${FILES_TO_READ}
</required_reading>

${STRUCTURAL_FINDINGS_BLOCK}

<config>
depth: ${REVIEW_DEPTH}
phase_dir: ${PHASE_DIR}
review_path: ${REVIEW_PATH}
${DIFF_BASE:+diff_base: ${DIFF_BASE}}
files:
${CONFIG_FILES}
</config>

Review the listed source files at ${REVIEW_DEPTH} depth. Write findings to ${REVIEW_PATH}.
Do NOT commit the output — the orchestrator handles that.
${AGENT_SKILLS_REVIEWER}")

ORCHESTRATOR RULE — CODEX RUNTIME: After calling Agent() above, stop working on this task immediately. Do not read more files, edit code, or run tests related to this task while the subagent is active. Wait for the subagent to return its result. This prevents duplicate work, conflicting edits, and wasted context. Only resume when the subagent result is available.

Agent failure handling:

If the Agent() call fails (agent error, timeout, or exception):

Error: Code review agent failed: ${error_message}

No REVIEW.md created. You can retry with /gsd:code-review ${PHASE_ARG} or check agent logs.

Do NOT proceed to commit_review step. Do NOT create a partial or empty REVIEW.md. Exit workflow.

After agent completes successfully, verify REVIEW.md was created and has valid structure:

if [ -f "${REVIEW_PATH}" ]; then
  # Validate REVIEW.md has valid YAML frontmatter with status field
  HAS_STATUS=$(REVIEW_PATH="${REVIEW_PATH}" node -e "
    const fs = require('fs');
    const content = fs.readFileSync(process.env.REVIEW_PATH, 'utf-8');
    const match = content.replace(/\r\n/g, '\n').match(/^---\n([\s\S]*?)\n---/);
    if (match && /status:/.test(match[1])) { console.log('valid'); } else { console.log('invalid'); }
  " 2>/dev/null)
  
  if [ "$HAS_STATUS" = "valid" ]; then
    echo "REVIEW.md created at ${REVIEW_PATH}"
    
    if [ "$COMMIT_DOCS" = "true" ]; then
      gsd_run query commit \
        "docs(${PADDED_PHASE}): add code review report" \
        --files "${REVIEW_PATH}"
    fi
  else
    echo "Warning: REVIEW.md exists but has invalid or missing frontmatter (no status field)."
    echo "Agent may have produced malformed output. Not committing. Review manually: ${REVIEW_PATH}"
  fi
else
  echo "Warning: Agent completed but REVIEW.md not found at ${REVIEW_PATH}. This may indicate an agent issue."
  echo "No REVIEW.md to commit. Please retry with /gsd:code-review ${PHASE_ARG}"
fi

If section_manifest is null or "dispatch-fix" is in its included list: read and execute gsd-core/workflows/code-review/steps/dispatch-fix.md. Otherwise skip — do not read the file; proceed to present_results.

Read the REVIEW.md YAML frontmatter to extract finding counts.

Extract frontmatter between --- delimiters first to avoid matching values in the review body:

# Extract only the YAML frontmatter block (between first two --- lines)
FRONTMATTER=$(REVIEW_PATH="${REVIEW_PATH}" node -e "
  const fs = require('fs');
  const content = fs.readFileSync(process.env.REVIEW_PATH, 'utf-8');
  const match = content.replace(/\r\n/g, '\n').match(/^---\n([\s\S]*?)\n---/);
  if (match) process.stdout.write(match[1]);
" 2>/dev/null)

# Parse fields from frontmatter only (not full file)
STATUS=$(echo "$FRONTMATTER" | grep "^status:" | cut -d: -f2 | xargs)
FILES_REVIEWED=$(echo "$FRONTMATTER" | grep "^files_reviewed:" | cut -d: -f2 | xargs)
CRITICAL=$(echo "$FRONTMATTER" | grep -E "^[[:space:]]*(critical|blocker):" | head -1 | cut -d: -f2 | xargs)
WARNING=$(echo "$FRONTMATTER" | grep "warning:" | head -1 | cut -d: -f2 | xargs)
INFO=$(echo "$FRONTMATTER" | grep "info:" | head -1 | cut -d: -f2 | xargs)
TOTAL=$(echo "$FRONTMATTER" | grep "total:" | head -1 | cut -d: -f2 | xargs)

Display inline summary to user:

═══════════════════════════════════════════════════════════════

  Code Review Complete: Phase ${PHASE_NUMBER} (${PHASE_NAME})

───────────────────────────────────────────────────────────────

  Depth:           ${REVIEW_DEPTH}
  Files Reviewed:  ${FILES_REVIEWED}
  
  Findings:
    Critical:  ${CRITICAL}
    Warning:   ${WARNING}
    Info:      ${INFO}
    ──────────
    Total:     ${TOTAL}

───────────────────────────────────────────────────────────────

If status is "clean":

✓ No issues found. All ${FILES_REVIEWED} files pass review at ${REVIEW_DEPTH} depth.

Full report: ${REVIEW_PATH}

If total findings > 0:

⚠ Issues found. Review the report for details.

Full report: ${REVIEW_PATH}

Next steps:
  /gsd:code-review ${PHASE_NUMBER} --fix  — Auto-fix issues
  cat ${REVIEW_PATH}                     — View full report

If critical > 0 or warning > 0, list top 3 issues inline:

echo "Top issues:"
grep -A 3 "^### CR-\|^### BL-\|^### WR-" "${REVIEW_PATH}" | head -n 12

Note on tests: Automated tests for this command and workflow are planned for Phase 4 (Pipeline Integration & Testing, requirement INFR-03). Phase 2 focuses on correct implementation; Phase 4 adds regression coverage across platforms.

═══════════════════════════════════════════════════════════════

<platform_notes> Windows: This workflow uses bash features (arrays, process substitution). On Windows, it requires Git Bash or WSL. Native PowerShell is not supported. The CI matrix (Ubuntu/macOS/Windows) runs under Git Bash on Windows runners, which provides bash compatibility.

macOS: macOS ships with bash 3.2 (GPL licensing). This workflow does NOT use mapfile (bash 4+ only) — all array construction uses portable while IFS= read -r loops compatible with bash 3.2. The --files path validation uses realpath -m which requires GNU coreutils (install via brew install coreutils). Without coreutils, the path guard falls back to fail-closed behavior (rejects paths it cannot verify), so security is maintained but valid relative paths may be rejected. If --files validation fails unexpectedly on macOS, install coreutils or use absolute paths. </platform_notes>

<success_criteria>

• Phase validated before config gate check
• Capability gate checked (execute:post code-review hook)
• --fix/--all/--auto flags parsed via code-review-flags.cjs typed IR (not ad-hoc bash)
• Depth resolved with validation (quick|standard|deep)
• File scope computed with 3 tiers: --files > SUMMARY.md > git diff
• Malformed/missing SUMMARY.md handled gracefully with fallback
• Deleted files filtered from scope
• Files deduplicated and sorted
• Empty scope results in skip (no agent spawn)
• Agent spawned with explicit file list, depth, review_path, diff_base
• Agent failure handled without partial commits
• REVIEW.md committed if created
• When --fix: dispatch_fix step delegates to code-review-fix.md with --all/--auto forwarded
• Results presented inline with next step suggestion (review-only path) </success_criteria>