update

Update LETS

Sync the drift-able LETS artifacts (four core + two optional: the user-scope global rules and the active tracker-<name>.md adapter) with the current release. Bridges to lets update --json (Go binary): auto-syncs .lets/.env (header refresh when LETS_ENV_VERSION is stale), .claude/rules/lets-rules.md (re-copy when outdated/missing - but deferred when the plugin is behind, so rules never sync to a stale plugin), and reports ~/.claude/rules/lets-rules.md (the global rules - maintained by the session hook as a cache of the running plugin, only reported here, never written; the user-rules row appears only when that file exists). It then computes a single ordered next_action (the self-driving loop): the binary and plugin steps can be run in-session (approval-gated), and a fully-synced machine prints ✓ Everything on vX.Y.Z.

MANDATORY: Execute every Step's bash block literally as written. Do not substitute output from earlier ls/cat in this conversation - .env and other dotfiles are invisible to plain ls. The test -f checks below ARE the contract.

Difference from /lets:init: /lets:init is first-time setup (it also asks config questions and sets up the statusline + beads). /lets:update only syncs what a new release changes - it asks no project-configuration questions and never touches settings.json or beads; the binary install and the on-disk plugin refresh each run only after an approval prompt.

Step 1: Pre-checks

command -v lets >/dev/null 2>&1 || { echo "NO_LETS_BINARY"; exit 0; }
LETS_PROJECT_ROOT=$(git rev-parse --show-toplevel 2>/dev/null) || { echo "NOT_GIT_REPO"; exit 0; }
test -f "$LETS_PROJECT_ROOT/.lets/.env" && echo "ENV_EXISTS" || echo "ENV_ABSENT"

Branch on output:

• NO_LETS_BINARY → tell user: "lets binary not found on $PATH. Install it — ! curl -fsSL https://raw.githubusercontent.com/restarter/lets-workflow/main/scripts/install.sh | bash (the leading ! runs it in this session; or the same command without ! in a terminal). See the README → Quick Start." NO LETS box. STOP.
• NOT_GIT_REPO → tell user: "Not a git repository. /lets:update runs inside a LETS project." NO LETS box. STOP.
• ENV_ABSENT → not initialized. Tell user: "This project hasn't been set up - run /lets:init first." Then still run Step 2 (it reports .env: not-initialized plus the binary/plugin status, which is useful). In Step 4 show the LETS box pointing at /lets:init instead of /lets:start.
• ENV_EXISTS → normal path. Continue to Step 2.