Lightweight framework bindings

• Svelte 5 exposes readable entity and list stores over an application-owned core peer.
• Solid projects entities and lists through fine-grained accessors.
• Alpine installs an entity graph plugin without duplicating canonical data in component scopes.
• Web Components provide framework-neutral controllers and Lit elements.
• HTMX keeps the graph server-side and returns projection fragments while preserving typed identity and mutation flow.

Each binding observes the same core writes in packed singleton-consumer tests. Use framework idioms for reactivity, but keep networking in services/adapters and entity copies out of view components.