What changed

• Added a list_loop_sources site AI tool that exposes loop source ids, data table ids, ordering/filter metadata, and valid {currentEntry.field} binding tokens.
• Added <instatic-loop> support to the HTML importer so AI-authored HTML creates a real base.loop node instead of a plain container.
• Updated the site agent prompt/write-tool descriptions and docs to guide agents away from invalid {{post.*}} bindings.
• Added coverage for the new loop source catalog and importer mapping.

Why

The site agent could previously guess loop bindings and source ids, but it had no read tool for the available dynamic data tokens. More importantly, the HTML import path had no loop marker, so attempts to create a loop through replaceNodeHtml imported as ordinary container markup.

Impact

Agents can now create post/data loops through the existing HTML-native write surface using <instatic-loop data-source-id="data.rows" data-table-id="...">, and loop children can use returned {currentEntry.*} tokens reliably.

Verification

• bun install
• bun run build
• bun test
• bun run lint