list_pages gains an opt-in `tree` parameter on both surfaces (the
@docmost/mcp server tool and the AI-chat agent tool), which share the
same DocmostClient.listPages. Default behavior (recent-by-updatedAt flat
list) is unchanged.
- client.ts: listPages(spaceId?, limit=50, tree=false); when tree is
true it requires spaceId (throws a specific error otherwise), walks the
sidebar tree via the existing bounded/cycle-safe enumerateSpacePages,
and returns a nested tree; limit is ignored in tree mode.
- lib/tree.ts: new pure buildPageTree() — lean nodes { id, slugId, title,
children? }, children sorted by position (code-unit order), orphans
promoted to roots, cycle-safe.
- index.ts + ai-chat-tools.service.ts: expose `tree` in the tool schemas
and descriptions; docmost-client.loader.ts: mirror the new signature.
- tests: add packages/mcp/test/unit/tree.test.mjs (nesting, ordering,
lean shape, orphan promotion, cycle/self-reference safety).
- rebuild @docmost/mcp (build/ is tracked and loaded at runtime).
1e7a306f96