v0.2.1 — sandbox gate fixes

Sandbox fixes that surfaced while running run-tests.sh against the scroll addition from v0.2.0. See CHANGELOG.md for details.

• Pass --sdk-version to codegen in run-tests.sh — CLI requires it in composite mode.
• Chronicle sandbox config key: [storage] → [store].
• Start-engine timeout: 5s → 15s.
• Seed the scroll-sandbox Cipher keyring before starting scroll-server.
• Scroll tests defensively support raw-map or typed entry access.

v0.2.0 — Scroll engine support

Scroll is now a first-class engine in the unified SDK.

Added

• Both codegen workflows (ci.yml generate-check + generate.yml) clone shroudb-scroll alongside every other engine repo, so the Moat composite spec can resolve the new [[engines]].name = "scroll" entry at generation time.
• Sandbox gains test-sandbox/test-scroll-config.toml (remote Cipher via {{CIPHER_PORT}} template substitution) and four integration tests — Python, TypeScript, Go, Ruby — exercising hello → append → read → create_group → read_group → ack → log_info → group_info → delete_group → delete_log.
• run-tests.sh: scroll added to the ENGINES list; start_engine gains a {{CIPHER_PORT}} substitution arm so scroll-server reaches the sandbox's already-running Cipher.

Fixed

• CLAUDE.md spec-input list was stale (missing stash + scroll) — now lists every engine Moat composes.