Merge feature/sw-ai-template (e27385e) into feature/sw-package (bf16578). No conflicts; no runtime source, Storybook source or public API change. Adds the integration record docs/sw/sw-ai-template-integration-2026-10-19.md and its evidence (Overview 53/53, overlays 19/19, AI consumer 27/27). The unverified wip/sw-header-composition-unverified branch is not included. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>