bin/dream and bin/briefing defaulted to the bare `sonnet` alias, which in headless runs can resolve to the credit-gated 1M-context variant and fail with "Usage credits required for 1M context" — silently skipping a nightly memory consolidation. Default them to the explicit standard-context id claude-sonnet-4-6 (matching what bin/setup already writes for the gateway), forcing the 200k window. Docs + CHANGELOG updated. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>