claude-mods/skills/loop-ops/scripts/loop-init.sh

#!/usr/bin/env bash
# Scaffold an outer-loop state spine (loop.config.yaml + STATE.md + run-log.md).
#
# Usage:   loop-init.sh --name NAME [OPTIONS]
# Input:   argv flags only (no stdin).
# Output:  stdout = the created loop.config.yaml path (data). Under --dry-run, the
#          path then the rendered config. Data only.
# Stderr:  the creation panel, reminders, warnings, errors.
# Exit:    0 created (or dry-run rendered), 2 usage, 3 template/dir not found,
#          5 precondition (target dir already populated, no --force)
#
# Creates <dir>/<name>/ from the bundled templates, substituting name/pattern/tier/
# cadence/permission_mode. Never clobbers a populated loop dir. Atomic writes.
# Next step: fill the config, then `loop-audit.sh <dir>/<name>/loop.config.yaml`.
#
# Examples:
#   loop-init.sh --name pr-babysitter --pattern pr-babysitter --tier L1
#   loop-init.sh --name dep-sweeper --pattern dependency-sweeper --tier L2 --cadence 1d
#   loop-init.sh --name nightly --cadence "0 3 * * *" --dry-run
set -uo pipefail

readonly EX_OK=0 EX_USAGE=2 EX_NOTFOUND=3 EX_PRECOND=5

# Terminal design system (skills/_lib/term.sh). stdout = the created path (data);
# the creation panel frames on stderr, so detect color on fd 2. Degrade to plain
# stderr lines if the shared lib is unreachable.
__lib="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../_lib" 2>/dev/null && pwd || true)"
if [ -n "${__lib:-}" ] && [ -f "$__lib/term.sh" ]; then . "$__lib/term.sh"; term_init 2
else
  term_panel_open() { :; }; term_panel_close() { :; }; term_panel_vert() { :; }
  term_status_row() { shift; printf '  - %s %s\n' "$1" "${2:-}"; }
  term_alert() { shift; printf '  ! %s\n' "$*"; }
  term_color() { shift; printf '%s' "$*"; }; TERM_DOT="|"
fi

HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ASSETS="$HERE/../assets"
CFG_TPL="$ASSETS/loop.config.template.yaml"
STATE_TPL="$ASSETS/STATE.template.md"

# ── defaults ────────────────────────────────────────────────────────────────
NAME=""
PATTERN="custom"
TIER="L1"
CADENCE="1h"
DIR=".loops"
DRY_RUN=0
FORCE=0

usage() {
  cat <<'EOF'
loop-init.sh — scaffold an outer-loop state spine.

Usage:
  loop-init.sh --name NAME [OPTIONS]

Options:
  --name NAME        loop identifier, kebab-case (required). Names the directory.
  --pattern KEY      catalog key (pr-babysitter, ci-sweeper, dependency-sweeper,
                     changelog-drafter, post-merge-cleanup, issue-triage,
                     daily-triage) or "custom" (default: custom).
  --tier L1|L2|L3    starting autonomy tier (default: L1).
  --cadence STR      10m | 1h | 6h | 1d, or a cron string (default: 1h).
  --dir DIR          parent directory for the loop (default: .loops).
  --dry-run          print the target path + rendered config; write nothing.
  --force            overwrite an already-populated <dir>/<name>/ directory.
  -h, --help         show this help and exit 0.

Exit codes:
  0 created (or dry-run)   2 usage   3 template/dir not found   5 dir populated

Examples:
  loop-init.sh --name pr-babysitter --pattern pr-babysitter --tier L1
  loop-init.sh --name dep-sweeper --pattern dependency-sweeper --tier L2 --cadence 1d
  loop-init.sh --name nightly --cadence "0 3 * * *" --dry-run
EOF
}

die_usage() { printf 'error: %s\n' "$1" >&2; echo >&2; usage >&2; exit "$EX_USAGE"; }

# ── parse args ──────────────────────────────────────────────────────────────
while [[ $# -gt 0 ]]; do
  case "$1" in
    --name)    [[ $# -ge 2 ]] || die_usage "--name needs a value"; NAME="$2"; shift 2 ;;
    --pattern) [[ $# -ge 2 ]] || die_usage "--pattern needs a value"; PATTERN="$2"; shift 2 ;;
    --tier)    [[ $# -ge 2 ]] || die_usage "--tier needs a value"; TIER="$2"; shift 2 ;;
    --cadence) [[ $# -ge 2 ]] || die_usage "--cadence needs a value"; CADENCE="$2"; shift 2 ;;
    --dir)     [[ $# -ge 2 ]] || die_usage "--dir needs a value"; DIR="$2"; shift 2 ;;
    --dry-run) DRY_RUN=1; shift ;;
    --force)   FORCE=1; shift ;;
    -h|--help) usage; exit "$EX_OK" ;;
    -*)        die_usage "unknown flag: $1" ;;
    *)         die_usage "unexpected positional argument: $1" ;;
  esac
done

# ── validate ────────────────────────────────────────────────────────────────
[[ -n "$NAME" ]] || die_usage "--name is required"
[[ "$NAME" =~ ^[a-z0-9]+(-[a-z0-9]+)*$ ]] || die_usage "--name must be kebab-case (got '$NAME')"
[[ "$PATTERN" =~ ^[a-z0-9]+(-[a-z0-9]+)*$ ]] || die_usage "--pattern must be kebab-case (got '$PATTERN')"
case "$TIER" in L1|L2|L3) ;; *) die_usage "--tier must be L1|L2|L3 (got '$TIER')" ;; esac
# cadence: Nm/Nh/Nd OR a cron-ish string (digits, spaces, * / , -)
[[ "$CADENCE" =~ ^[0-9]+[mhd]$ || "$CADENCE" =~ ^[-0-9*/,\ ]+$ ]] \
  || die_usage "--cadence must be like 10m/1h/1d or a cron string (got '$CADENCE')"

[[ -f "$CFG_TPL" ]]   || { printf 'error: config template not found at %s\n' "$CFG_TPL" >&2; exit "$EX_NOTFOUND"; }
[[ -f "$STATE_TPL" ]] || { printf 'error: STATE template not found at %s\n' "$STATE_TPL" >&2; exit "$EX_NOTFOUND"; }

# Default permission_mode from tier (the workhorse mapping; see references/risk-tiers.md).
case "$TIER" in
  L1|L2) PMODE="dontAsk" ;;
  L3)    PMODE="bypassPermissions" ;;
esac

TARGET_DIR="$DIR/$NAME"
CFG_OUT="$TARGET_DIR/loop.config.yaml"
STATE_OUT="$TARGET_DIR/STATE.md"
LOG_OUT="$TARGET_DIR/run-log.md"

# Refuse a populated target unless --force.
if [[ -d "$TARGET_DIR" ]] && [[ -n "$(ls -A "$TARGET_DIR" 2>/dev/null)" ]] && [[ "$FORCE" -ne 1 ]]; then
  printf 'error: loop directory already populated: %s (use --force to overwrite)\n' "$TARGET_DIR" >&2
  exit "$EX_PRECOND"
fi

NOW="$(date -u +%Y-%m-%dT%H:%M:%SZ)"

# ── render config from template ─────────────────────────────────────────────
# Line-anchored sed substitutions: identity placeholders globally, the three
# tunable scalar lines by their default value. Kill-switch path carries <loop-name>.
render_config() {
  sed -E \
    -e "s|<loop-name>|$NAME|g" \
    -e "s|<pattern-key>|$PATTERN|" \
    -e "s|^tier: L1|tier: $TIER|" \
    -e "s|^cadence: 1h|cadence: $CADENCE|" \
    -e "s|^permission_mode: dontAsk|permission_mode: $PMODE|" \
    "$CFG_TPL"
}

render_state() {
  sed -E \
    -e "s|<loop-name>|$NAME|g" \
    -e "s|<ISO-8601 Z>|$NOW|" \
    "$STATE_TPL"
}

render_log() {
  cat <<EOF
# $NAME — run log (append-only; one line per run)
# format: <ISO-Z>  run#N  action=<reported|proposed|none>  <key=val…>  outcome=<…>  tokens=<N>
EOF
}

# ── dry-run: print and stop ─────────────────────────────────────────────────
if [[ "$DRY_RUN" -eq 1 ]]; then
  printf '%s\n' "$CFG_OUT"
  {
    term_panel_open loop "loop ${TERM_DOT} init (dry-run)" "$NAME"
    term_panel_vert
    term_status_row skip "would create  $TARGET_DIR/" "tier $TIER ${TERM_DOT} $PATTERN ${TERM_DOT} $CADENCE"
    term_status_row skip "  loop.config.yaml" "permission_mode: $PMODE"
    term_status_row skip "  STATE.md / run-log.md" ""
    term_panel_vert
    term_panel_close "nothing written" ""
  } >&2
  render_config
  exit "$EX_OK"
fi

# ── atomic writes ───────────────────────────────────────────────────────────
mkdir -p "$TARGET_DIR" || { printf 'error: could not create %s\n' "$TARGET_DIR" >&2; exit 1; }

write_atomic() {  # write_atomic <dest> <content>
  local dest="$1" content="$2" tmp
  tmp="$dest.tmp.$$"
  printf '%s\n' "$content" > "$tmp" || { printf 'error: failed to write %s\n' "$tmp" >&2; exit 1; }
  mv -f "$tmp" "$dest" || { rm -f "$tmp"; printf 'error: failed to move into place: %s\n' "$dest" >&2; exit 1; }
}

write_atomic "$CFG_OUT"   "$(render_config)"
write_atomic "$STATE_OUT" "$(render_state)"
write_atomic "$LOG_OUT"   "$(render_log)"

printf '%s\n' "$CFG_OUT"

{
  term_panel_open loop "loop ${TERM_DOT} init" "$NAME"
  term_panel_vert
  term_status_row ok "created  $TARGET_DIR/" "tier $TIER ${TERM_DOT} $PATTERN ${TERM_DOT} $CADENCE"
  term_status_row ok "  loop.config.yaml" "permission_mode: $PMODE"
  term_status_row ok "  STATE.md / run-log.md" ""
  if [[ "$TIER" != "L1" ]]; then
    term_alert warning "tier $TIER needs a verify gate, guard, worktree, escalation + land_via — fill them before auditing"
  fi
  term_panel_vert
  term_panel_close "then: fill the config ${TERM_DOT} loop-audit.sh $CFG_OUT" ""
} >&2

exit "$EX_OK"