Landing sites (`landing`)

Baseline: main 23.0+ · Verified: landing 26.1200.0, main 26.800.0

Block-based sites: Sites24, stores, knowledge bases, Vibe. Classic site templates, menus and includes: bitrix-cms-basics.

Task	Read
Site types, pages, blocks from PHP, custom blocks, URLs in content	`rules/pages-blocks.md`
Publish, preview links, soft delete, hooks (counters, meta), rights	`rules/publish-hooks.md`
Repo blocks via REST, PublicAction batch, Disk files, pictures	`rules/rest-security.md`