init version

2026-06-29 21:16:52 +08:00
commit 7a5a1d033f
101 changed files with 22202 additions and 0 deletions
@@ -0,0 +1,778 @@
+#!/bin/bash
+# Comet Phase Guard — validates exit conditions before phase transitions
+# Usage: comet-guard.sh <change-name> <current-phase> [--apply]
+# Phases: open, design, build, verify, archive
+# Exit 0 = all checks pass, exit 1 = blocked (reasons printed to stderr)
+# shellcheck disable=SC2329  # Functions called indirectly via check() dispatch
+
+set -euo pipefail
+
+COMET_BASH="${COMET_BASH:-${BASH:-bash}}"
+
+red() { echo -e "\033[31m$1\033[0m" >&2; }
+green() { echo -e "\033[32m$1\033[0m" >&2; }
+warn() { echo -e "\033[33m$1\033[0m" >&2; }
+
+# Input validation - prevent path traversal
+validate_change_name() {
+  local name="$1"
+  # Reject empty names
+  if [ -z "$name" ]; then
+    red "ERROR: Change name cannot be empty" >&2
+    exit 1
+  fi
+  # Only allow alphanumeric, hyphens, and underscores
+  if [[ ! "$name" =~ ^[a-zA-Z0-9_-]+$ ]]; then
+    red "ERROR: Invalid change name: '$name'" >&2
+    red "Valid characters: a-z, A-Z, 0-9, -, _" >&2
+    exit 1
+  fi
+  # Reject path traversal attempts
+  if [[ "$name" =~ \.\. ]]; then
+    red "ERROR: Change name cannot contain '..' (path traversal not allowed)" >&2
+    exit 1
+  fi
+}
+
+if [ "${COMET_GUARD_SOURCE_ONLY:-0}" = "1" ]; then
+  CHANGE="${CHANGE:-}"
+  PHASE="${PHASE:-}"
+  APPLY="${APPLY:-0}"
+  SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]:-$0}")" && pwd -P)"
+  CHANGE_DIR="${CHANGE_DIR:-}"
+else
+  validate_change_name "$1"
+
+  CHANGE="$1"
+  PHASE="$2"
+  APPLY=0
+  SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
+  if [[ "${3:-}" == "--apply" ]]; then
+    APPLY=1
+  fi
+  CHANGE_DIR="openspec/changes/$CHANGE"
+  if [ "$PHASE" = "archive" ] && [ ! -d "$CHANGE_DIR" ] && [ -d "openspec/changes/archive/$CHANGE" ]; then
+    CHANGE_DIR="openspec/changes/archive/$CHANGE"
+  fi
+fi
+
+BLOCK=0
+check() {
+  local desc="$1"
+  shift
+  local output
+  if output=$("$@" 2>&1); then
+    green "  [PASS] $desc"
+  else
+    red "  [FAIL] $desc"
+    if [ -n "$output" ]; then
+      while IFS= read -r line; do
+        red "    $line"
+      done <<< "$output"
+    fi
+    BLOCK=1
+  fi
+}
+
+# --- Helper functions ---
+
+tasks_all_done() {
+  local tasks="$CHANGE_DIR/tasks.md"
+  if [ ! -f "$tasks" ]; then
+    echo "tasks.md is missing at $tasks" >&2
+    echo "Next: restore or create tasks.md for this change before leaving build." >&2
+    return 1
+  fi
+  if ! grep -q '\- \[x\]' "$tasks"; then
+    echo "tasks.md has no completed tasks." >&2
+    echo "Next: complete implementation tasks and mark them with '- [x]'." >&2
+    return 1
+  fi
+  if grep -q '\- \[ \]' "$tasks"; then
+    echo "Unfinished tasks:" >&2
+    grep -n '\- \[ \]' "$tasks" >&2 || true
+    echo "Next: complete or explicitly remove unfinished tasks, then mark tasks.md with '- [x]'." >&2
+    return 1
+  fi
+  return 0
+}
+
+tasks_has_any() {
+  local tasks="$CHANGE_DIR/tasks.md"
+  [ -f "$tasks" ] && grep -q '\- \[' "$tasks"
+}
+
+plan_tasks_all_done() {
+  local plan
+  plan=$(yaml_field_value "plan" 2>/dev/null || true)
+
+  if [ -z "$plan" ] || [ "$plan" = "null" ]; then
+    return 0
+  fi
+  if [ ! -f "$plan" ]; then
+    echo "plan file is missing at $plan" >&2
+    echo "Next: restore the Superpowers plan file or update .comet.yaml plan before leaving build." >&2
+    return 1
+  fi
+  if grep -q '^[[:space:]]*- \[ \]' "$plan"; then
+    echo "Unfinished Superpowers plan tasks:" >&2
+    grep -n '^[[:space:]]*- \[ \]' "$plan" >&2 || true
+    echo "Next: check off corresponding completed plan tasks, then commit the plan update." >&2
+    return 1
+  fi
+  return 0
+}
+
+yaml_field_value() {
+  local field="$1"
+  local yaml="$CHANGE_DIR/.comet.yaml"
+  if [ -f "$yaml" ]; then
+    local value
+    value=$(grep "^${field}:" "$yaml" 2>/dev/null | sed "s/^${field}: *//" || true)
+    value=$(strip_inline_comment "$value")
+    strip_wrapping_quotes "$value"
+  fi
+}
+
+strip_inline_comment() {
+  local value="$1"
+  printf '%s\n' "$value" | awk -v squote="'" '
+    {
+      out = ""
+      quote = ""
+      for (i = 1; i <= length($0); i++) {
+        c = substr($0, i, 1)
+        if (quote == "") {
+          if (c == "\"" || c == squote) {
+            quote = c
+          } else if (c == "#" && (i == 1 || substr($0, i - 1, 1) ~ /[[:space:]]/)) {
+            sub(/[[:space:]]+$/, "", out)
+            print out
+            next
+          }
+        } else if (c == quote) {
+          quote = ""
+        }
+        out = out c
+      }
+      print out
+    }
+  '
+}
+
+strip_wrapping_quotes() {
+  local value="$1"
+  case "$value" in
+    \"*\")
+      printf '%s\n' "${value:1:${#value}-2}"
+      ;;
+    \'*\')
+      printf '%s\n' "${value:1:${#value}-2}"
+      ;;
+    *)
+      printf '%s\n' "$value"
+      ;;
+  esac
+}
+
+project_config_value() {
+  local field="$1"
+  local value
+
+  value=$(yaml_field_value "$field" 2>/dev/null || true)
+  if [ -n "$value" ] && [ "$value" != "null" ]; then
+    echo "$value"
+    return 0
+  fi
+
+  for config in ".comet.yaml" "comet.yaml" ".comet.yml" "comet.yml"; do
+    if [ -f "$config" ]; then
+      value=$(grep "^${field}:" "$config" 2>/dev/null | sed "s/^${field}: *//" || true)
+      value=$(strip_inline_comment "$value")
+      value=$(strip_wrapping_quotes "$value")
+      if [ -n "$value" ] && [ "$value" != "null" ]; then
+        echo "$value"
+        return 0
+      fi
+    fi
+  done
+}
+
+file_nonempty() {
+  [ -f "$1" ] && [ -s "$1" ]
+}
+
+is_windows_bash() {
+  case "$(uname -s 2>/dev/null || true)" in
+    MINGW*|MSYS*|CYGWIN*) return 0 ;;
+    *) return 1 ;;
+  esac
+}
+
+run_command_string() {
+  local command="$1"
+  if [ -z "$command" ]; then
+    red "ERROR: build/verify command is empty" >&2
+    return 1
+  fi
+  # Basic command injection guard: reject dangerous shell metacharacters
+  # Quotes are allowed to support paths with spaces (e.g. Windows)
+  if [[ "$command" =~ [\;\|\&\$\`] ]]; then
+    red "ERROR: build/verify command contains shell metacharacters: $command" >&2
+    red "Allowed: alphanumeric, spaces, hyphens, underscores, dots, colons, forward slashes, quotes" >&2
+    return 1
+  fi
+  echo "+ $command" >&2
+  "$COMET_BASH" -lc "$command"
+}
+
+hash_stream() {
+  if command -v sha256sum >/dev/null 2>&1; then
+    sha256sum | awk '{print $1}'
+  elif command -v shasum >/dev/null 2>&1; then
+    shasum -a 256 | awk '{print $1}'
+  else
+    echo "sha256sum or shasum is required" >&2
+    return 1
+  fi
+}
+
+hash_file() {
+  local file="$1"
+  if command -v sha256sum >/dev/null 2>&1; then
+    sha256sum "$file" | awk '{print $1}'
+  elif command -v shasum >/dev/null 2>&1; then
+    shasum -a 256 "$file" | awk '{print $1}'
+  else
+    echo "sha256sum or shasum is required" >&2
+    return 1
+  fi
+}
+
+handoff_source_files() {
+  printf '%s\n' "$CHANGE_DIR/proposal.md"
+  printf '%s\n' "$CHANGE_DIR/design.md"
+  printf '%s\n' "$CHANGE_DIR/tasks.md"
+  if [ -d "$CHANGE_DIR/specs" ]; then
+    find "$CHANGE_DIR/specs" -path '*/spec.md' -type f 2>/dev/null | sort
+  fi
+}
+
+compute_handoff_hash() {
+  local hash_input
+  hash_input=$(handoff_source_files | while IFS= read -r file; do
+    if [ -f "$file" ]; then
+      printf 'path:%s\n' "$file"
+      printf 'sha256:%s\n' "$(hash_file "$file")"
+    fi
+  done)
+  printf '%s' "$hash_input" | hash_stream
+}
+
+preflight() {
+
+  if [ ! -d "$CHANGE_DIR" ]; then
+    red "FATAL: change directory not found: $CHANGE_DIR"
+    exit 1
+  fi
+  if [ ! -f "$CHANGE_DIR/.comet.yaml" ]; then
+    red "FATAL: .comet.yaml not found in $CHANGE_DIR"
+    exit 1
+  fi
+
+  # Schema validation
+  local validate_script
+  validate_script="$SCRIPT_DIR/comet-yaml-validate.sh"
+  if [ -f "$validate_script" ]; then
+    if ! "$COMET_BASH" "$validate_script" "$CHANGE" 2>/dev/null; then
+      "$COMET_BASH" "$validate_script" "$CHANGE" || true
+      red "FATAL: .comet.yaml schema validation failed"
+      exit 1
+    fi
+  fi
+}
+
+build_passes() {
+  if [ "${COMET_SKIP_BUILD:-0}" = "1" ]; then
+    return 0
+  fi
+  local configured_build
+  configured_build=$(project_config_value "build_command" 2>/dev/null || true)
+  if [ -n "$configured_build" ]; then
+    run_command_string "$configured_build"
+    return $?
+  fi
+  if [ -f "package.json" ] && grep -q '"build"' "package.json"; then
+    npm run build
+    return $?
+  fi
+  if [ -f "pom.xml" ]; then
+    if [ -x "./mvnw" ]; then
+      ./mvnw compile -q
+    elif is_windows_bash && command -v mvn.cmd >/dev/null 2>&1; then
+      mvn.cmd compile -q
+    else
+      mvn compile -q
+    fi
+    return $?
+  fi
+  if [ -f "Cargo.toml" ]; then
+    cargo build
+    return $?
+  fi
+  return 1
+}
+
+verification_command_passes() {
+  if [ "${COMET_SKIP_BUILD:-0}" = "1" ]; then
+    return 0
+  fi
+  local configured_verify
+  configured_verify=$(project_config_value "verify_command" 2>/dev/null || true)
+  if [ -n "$configured_verify" ]; then
+    run_command_string "$configured_verify"
+    return $?
+  fi
+  build_passes
+}
+
+isolation_selected() {
+  local isolation
+  isolation=$(yaml_field_value "isolation" 2>/dev/null || true)
+  case "$isolation" in
+    branch|worktree) return 0 ;;
+    *)
+      echo "isolation must be branch or worktree, got '${isolation:-null}'" >&2
+      echo "Next: ask the user to choose branch or worktree, create the chosen isolation, then run:" >&2
+      echo "  \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE isolation <branch|worktree>" >&2
+      return 1
+      ;;
+  esac
+}
+
+build_mode_selected() {
+  local build_mode
+  build_mode=$(yaml_field_value "build_mode" 2>/dev/null || true)
+  case "$build_mode" in
+    subagent-driven-development|executing-plans|direct) return 0 ;;
+    *)
+      echo "build_mode must be selected before leaving build, got '${build_mode:-null}'" >&2
+      echo "Next: ask the user to choose an execution mode, then run:" >&2
+      echo "  \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE build_mode <subagent-driven-development|executing-plans>" >&2
+      return 1
+      ;;
+  esac
+}
+
+build_mode_allowed_for_workflow() {
+  local workflow build_mode direct_override
+  workflow=$(yaml_field_value "workflow" 2>/dev/null || true)
+  build_mode=$(yaml_field_value "build_mode" 2>/dev/null || true)
+  direct_override=$(yaml_field_value "direct_override" 2>/dev/null || true)
+
+  if [ "$build_mode" != "direct" ]; then
+    return 0
+  fi
+  case "$workflow" in
+    hotfix|tweak) return 0 ;;
+    *)
+      if [ "$direct_override" = "true" ]; then
+        return 0
+      fi
+      echo "build_mode=direct is only allowed for hotfix/tweak unless direct_override: true is recorded" >&2
+      echo "Next: choose executing-plans or subagent-driven-development, or stop and ask the user for an explicit direct override." >&2
+      return 1
+      ;;
+  esac
+}
+
+subagent_dispatch_confirmed() {
+  local build_mode subagent_dispatch
+  build_mode=$(yaml_field_value "build_mode" 2>/dev/null || true)
+  subagent_dispatch=$(yaml_field_value "subagent_dispatch" 2>/dev/null || true)
+
+  if [ "$build_mode" != "subagent-driven-development" ]; then
+    return 0
+  fi
+
+  if [ "$subagent_dispatch" = "confirmed" ]; then
+    return 0
+  fi
+
+  echo "subagent_dispatch must be confirmed before using build_mode=subagent-driven-development" >&2
+  echo "Next: confirm the current platform has a real background subagent/Task/multi-agent dispatcher, then run:" >&2
+  echo "  \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE subagent_dispatch confirmed" >&2
+  echo "Or ask the user to switch to executing-plans and run:" >&2
+  echo "  \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE build_mode executing-plans" >&2
+  return 1
+}
+
+tdd_mode_selected() {
+  local workflow tdd_mode
+  workflow=$(yaml_field_value "workflow" 2>/dev/null || true)
+  tdd_mode=$(yaml_field_value "tdd_mode" 2>/dev/null || true)
+
+  case "$workflow" in
+    hotfix|tweak) return 0 ;;
+  esac
+
+  case "$tdd_mode" in
+    tdd|direct) return 0 ;;
+    *)
+      echo "tdd_mode must be tdd or direct for full workflow, got '${tdd_mode:-null}'" >&2
+      echo "Next: ask the user to choose TDD enforcement level, then run:" >&2
+      echo "  \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE tdd_mode <tdd|direct>" >&2
+      return 1
+      ;;
+  esac
+}
+
+review_mode_selected() {
+  local workflow review_mode
+  workflow=$(yaml_field_value "workflow" 2>/dev/null || true)
+  review_mode=$(yaml_field_value "review_mode" 2>/dev/null || true)
+
+  case "$workflow" in
+    hotfix|tweak) return 0 ;;
+  esac
+
+  case "$review_mode" in
+    off|standard|thorough) return 0 ;;
+    *)
+      echo "review_mode must be off, standard, or thorough before leaving build, got '${review_mode:-null}'" >&2
+      echo "Next: ask the user to choose code review mode, then run:" >&2
+      echo "  \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE review_mode <off|standard|thorough>" >&2
+      return 1
+      ;;
+  esac
+}
+
+verify_result_is_pass() {
+  local result
+  result=$(yaml_field_value "verify_result" 2>/dev/null || true)
+  [ "$result" = "pass" ]
+}
+
+verification_report_exists() {
+  local report
+  report=$(yaml_field_value "verification_report" 2>/dev/null || true)
+  [ -n "$report" ] && [ "$report" != "null" ] && [ -f "$report" ]
+}
+
+branch_status_handled() {
+  local status
+  status=$(yaml_field_value "branch_status" 2>/dev/null || true)
+  [ "$status" = "handled" ]
+}
+
+design_handoff_context_valid() {
+  local context recorded_hash actual_hash markdown
+  context=$(yaml_field_value "handoff_context" 2>/dev/null || true)
+  recorded_hash=$(yaml_field_value "handoff_hash" 2>/dev/null || true)
+
+  if [ -z "$context" ] || [ "$context" = "null" ]; then
+    echo "handoff_context is missing from .comet.yaml" >&2
+    echo "Next: run \"\$COMET_BASH\" \"\$COMET_HANDOFF\" $CHANGE design --write before invoking Superpowers." >&2
+    return 1
+  fi
+  if [ ! -s "$context" ]; then
+    echo "handoff_context does not point to a non-empty file: $context" >&2
+    echo "Next: regenerate the design handoff with comet-handoff.sh." >&2
+    return 1
+  fi
+  if [[ ! "$recorded_hash" =~ ^[a-f0-9]{64}$ ]]; then
+    echo "handoff_hash is missing or invalid: ${recorded_hash:-null}" >&2
+    echo "Next: regenerate the design handoff with comet-handoff.sh." >&2
+    return 1
+  fi
+
+  actual_hash=$(compute_handoff_hash)
+  if [ "$actual_hash" != "$recorded_hash" ]; then
+    echo "OpenSpec artifacts changed after handoff was generated." >&2
+    echo "Expected handoff_hash: $recorded_hash" >&2
+    echo "Actual handoff_hash:   $actual_hash" >&2
+    echo "Next: rerun comet-handoff.sh so Superpowers receives the current OpenSpec context." >&2
+    return 1
+  fi
+
+  markdown="${context%.json}.md"
+  if [ ! -s "$markdown" ]; then
+    echo "design handoff markdown is missing or empty: $markdown" >&2
+    echo "Next: regenerate the design handoff with comet-handoff.sh." >&2
+    return 1
+  fi
+}
+
+design_handoff_markdown_traceable() {
+  local context markdown missing=0
+  context=$(yaml_field_value "handoff_context" 2>/dev/null || true)
+  if [ -z "$context" ] || [ "$context" = "null" ]; then
+    echo "handoff_context is missing from .comet.yaml" >&2
+    return 1
+  fi
+  markdown="${context%.json}.md"
+  if [ ! -s "$markdown" ]; then
+    echo "design handoff markdown is missing or empty: $markdown" >&2
+    return 1
+  fi
+  grep -q '^Generated-by: comet-handoff\.sh$' "$markdown" || {
+    echo "handoff markdown is missing Generated-by marker" >&2
+    missing=1
+  }
+  grep -Eq '^- Mode: (compact|full|beta)$' "$markdown" || {
+    echo "handoff markdown is missing Mode marker" >&2
+    missing=1
+  }
+  handoff_source_files | while IFS= read -r file; do
+    [ -f "$file" ] || continue
+    if ! grep -q "^- Source: $file$" "$markdown"; then
+      echo "handoff markdown is missing source reference: $file" >&2
+      exit 2
+    fi
+    if ! grep -q "^- SHA256: $(hash_file "$file")$" "$markdown"; then
+      echo "handoff markdown is missing current sha256 for: $file" >&2
+      exit 2
+    fi
+  done || missing=1
+
+  [ "$missing" -eq 0 ]
+}
+
+context_compression_mode() {
+  local mode
+  mode=$(yaml_field_value "context_compression" 2>/dev/null || true)
+  printf '%s\n' "${mode:-off}"
+}
+
+beta_spec_json_structurally_valid() {
+  local context missing=0
+  if [ "$(context_compression_mode)" != "beta" ]; then
+    return 0
+  fi
+
+  context=$(yaml_field_value "handoff_context" 2>/dev/null || true)
+  if [ -z "$context" ] || [ "$context" = "null" ]; then
+    echo "handoff_context is missing from .comet.yaml" >&2
+    return 1
+  fi
+  if [ ! -s "$context" ]; then
+    echo "spec-context.json is missing or empty: $context" >&2
+    return 1
+  fi
+
+  # Validate required JSON fields
+  grep -q '"change"' "$context" || { echo "spec-context.json missing 'change' field" >&2; return 1; }
+  grep -q '"phase"' "$context" || { echo "spec-context.json missing 'phase' field" >&2; return 1; }
+  grep -q '"mode": "beta"' "$context" || { echo "spec-context.json mode is not beta" >&2; return 1; }
+  grep -q '"files"' "$context" || { echo "spec-context.json missing 'files' field" >&2; return 1; }
+  grep -q '"context_hash"' "$context" || { echo "spec-context.json missing 'context_hash' field" >&2; return 1; }
+
+  # Verify all source files are referenced in the JSON
+  handoff_source_files | while IFS= read -r file; do
+    [ -f "$file" ] || continue
+    if ! grep -qF "$file" "$context"; then
+      echo "spec-context.json missing source file reference: $file" >&2
+      exit 2
+    fi
+  done || missing=1
+
+  [ "$missing" -eq 0 ]
+}
+
+design_doc_frontmatter_has() {
+  local design_doc="$1"
+  local field="$2"
+  local expected="$3"
+  awk '
+    {
+      line = $0
+      sub(/^\357\273\277/, "", line)
+    }
+    !in_fm && line == "---" { in_fm = 1; next }
+    in_fm && line == "---" { exit }
+    in_fm { print line }
+  ' "$design_doc" | grep -Eq "^${field}: ['\"]?${expected}['\"]?[[:space:]]*$"
+}
+
+design_doc_links_current_change() {
+  local design_doc
+  design_doc=$(yaml_field_value "design_doc" 2>/dev/null || true)
+  if [ -z "$design_doc" ] || [ "$design_doc" = "null" ] || [ ! -s "$design_doc" ]; then
+    echo "design_doc must point to an existing Superpowers Design Doc before leaving design." >&2
+    return 1
+  fi
+  design_doc_frontmatter_has "$design_doc" "comet_change" "$CHANGE"
+}
+
+design_doc_declares_technical_role() {
+  local design_doc
+  design_doc=$(yaml_field_value "design_doc" 2>/dev/null || true)
+  [ -n "$design_doc" ] && [ "$design_doc" != "null" ] && [ -s "$design_doc" ] &&
+    design_doc_frontmatter_has "$design_doc" "role" "technical-design"
+}
+
+design_doc_declares_canonical_spec() {
+  local design_doc
+  design_doc=$(yaml_field_value "design_doc" 2>/dev/null || true)
+  [ -n "$design_doc" ] && [ "$design_doc" != "null" ] && [ -s "$design_doc" ] &&
+    design_doc_frontmatter_has "$design_doc" "canonical_spec" "openspec"
+}
+
+archived_is_true() {
+  local val
+  val=$(yaml_field_value "archived" 2>/dev/null || true)
+  [ "$val" = "true" ]
+}
+
+# --- Phase-specific checks ---
+
+guard_open() {
+  echo "=== Guard: open → next ===" >&2
+
+  local workflow
+  workflow=$(yaml_field_value "workflow" 2>/dev/null || true)
+
+  check "proposal.md exists and non-empty" file_nonempty "$CHANGE_DIR/proposal.md"
+  if [ "$workflow" = "full" ]; then
+    check "design.md exists and non-empty" file_nonempty "$CHANGE_DIR/design.md"
+  fi
+  check "tasks.md exists and non-empty" file_nonempty "$CHANGE_DIR/tasks.md"
+  check "tasks.md has at least one task" tasks_has_any
+}
+
+guard_design() {
+  echo "=== Guard: design → build ===" >&2
+
+  local design_doc workflow
+  design_doc=$(yaml_field_value "design_doc" 2>/dev/null || true)
+  workflow=$(yaml_field_value "workflow" 2>/dev/null || true)
+
+  check "proposal.md exists" file_nonempty "$CHANGE_DIR/proposal.md"
+  check "design.md exists" file_nonempty "$CHANGE_DIR/design.md"
+  check "tasks.md exists" file_nonempty "$CHANGE_DIR/tasks.md"
+  check "design handoff context exists" design_handoff_context_valid
+  check "design handoff markdown is traceable" design_handoff_markdown_traceable
+  if [ "$(context_compression_mode)" = "beta" ]; then
+    check "beta spec-context.json is structurally valid" beta_spec_json_structurally_valid
+  fi
+
+  if [ "$workflow" = "full" ]; then
+    # Full workflow: design_doc is REQUIRED
+    check "design_doc is recorded for full workflow" design_doc_recorded
+  fi
+
+  if [ -n "$design_doc" ] && [ "$design_doc" != "null" ]; then
+    check "Design Doc ($design_doc) exists" file_nonempty "$design_doc"
+    check "Design Doc frontmatter links current change" design_doc_links_current_change
+    check "Design Doc declares technical design role" design_doc_declares_technical_role
+    check "Design Doc declares OpenSpec as canonical spec" design_doc_declares_canonical_spec
+  elif [ "$workflow" != "full" ]; then
+    warn "  [WARN] No design_doc recorded in .comet.yaml (optional for hotfix/tweak)"
+  fi
+}
+
+design_doc_recorded() {
+  local design_doc
+  design_doc=$(yaml_field_value "design_doc" 2>/dev/null || true)
+  if [ -n "$design_doc" ] && [ "$design_doc" != "null" ] && [ -f "$design_doc" ]; then
+    return 0
+  fi
+  echo "design_doc must point to an existing Superpowers Design Doc for full workflow before leaving design." >&2
+  echo "Next: create the Design Doc and run: \"\$COMET_BASH\" \"\$COMET_STATE\" set $CHANGE design_doc <path>" >&2
+  return 1
+}
+
+guard_build() {
+  echo "=== Guard: build → verify ===" >&2
+
+  check "isolation selected" isolation_selected
+  check "build_mode selected" build_mode_selected
+  check "build_mode allowed for workflow" build_mode_allowed_for_workflow
+  check "subagent dispatch confirmed" subagent_dispatch_confirmed
+  check "tdd_mode selected" tdd_mode_selected
+  check "review_mode selected" review_mode_selected
+  check "tasks.md all tasks checked" tasks_all_done
+  check "Superpowers plan all tasks checked" plan_tasks_all_done
+  check "proposal.md exists" file_nonempty "$CHANGE_DIR/proposal.md"
+  check "Build passes" build_passes
+}
+
+guard_verify() {
+  echo "=== Guard: verify → archive ===" >&2
+
+  check "tasks.md all tasks checked" tasks_all_done
+  check "Build passes" verification_command_passes
+  check "verification_report exists" verification_report_exists
+  check "branch_status=handled" branch_status_handled
+}
+
+guard_archive() {
+  echo "=== Guard: archive completeness ===" >&2
+
+  check "archived is true" archived_is_true
+  check "proposal.md exists" file_nonempty "$CHANGE_DIR/proposal.md"
+  check "design.md exists" file_nonempty "$CHANGE_DIR/design.md"
+  check "tasks.md all tasks checked" tasks_all_done
+}
+
+apply_state_update() {
+  local state_sh="$SCRIPT_DIR/comet-state.sh"
+  local p="$1"
+
+  if [ -f "$state_sh" ]; then
+    case "$p" in
+      open)   "$COMET_BASH" "$state_sh" transition "$CHANGE" open-complete ;;
+      design) "$COMET_BASH" "$state_sh" transition "$CHANGE" design-complete ;;
+      build)  "$COMET_BASH" "$state_sh" transition "$CHANGE" build-complete ;;
+      verify) "$COMET_BASH" "$state_sh" transition "$CHANGE" verify-pass ;;
+    esac
+  else
+    red "FATAL: comet-state.sh not found; cannot apply state transition"
+    exit 1
+  fi
+}
+
+# --- Main ---
+
+if [ "${COMET_GUARD_SOURCE_ONLY:-0}" = "1" ]; then
+  return 0 2>/dev/null
+  # shellcheck disable=SC2317  # unreachable if sourced; fallback for direct execution
+  red "ERROR: COMET_GUARD_SOURCE_ONLY=1 is only for sourcing, not direct execution" >&2
+  # shellcheck disable=SC2317
+  exit 1
+fi
+
+case "$PHASE" in
+  open)     preflight ; guard_open ;;
+  design)   preflight ; guard_design ;;
+  build)    preflight ; guard_build ;;
+  verify)   preflight ; guard_verify ;;
+  archive)  preflight ; guard_archive ;;
+  *)
+    red "Unknown phase: $PHASE"
+    echo "Valid phases: open, design, build, verify, archive" >&2
+    exit 1
+    ;;
+esac
+
+if [ "$BLOCK" -eq 1 ]; then
+  echo "" >&2
+  red "BLOCKED — fix failing checks before proceeding to next phase"
+  exit 1
+else
+  echo "" >&2
+  green "ALL CHECKS PASSED — ready for next phase"
+  if [ "$APPLY" -eq 1 ]; then
+    apply_state_update "$PHASE"
+    case "$PHASE" in
+      open)
+        new_phase=$(yaml_field_value "phase")
+        green "  [APPLY] .comet.yaml updated: phase=$new_phase"
+        ;;
+      design) green "  [APPLY] .comet.yaml updated: phase=build" ;;
+      build)  green "  [APPLY] .comet.yaml updated: phase=verify, verify_result=pending" ;;
+      verify) green "  [APPLY] .comet.yaml updated: phase=archive, verify_result=pass" ;;
+    esac
+  fi
+  exit 0
+fi