Canvas-only eeschema sessions (read-only viewers, hide-UI editors) could not
reach the wx hierarchy pane, so a viewer of a hierarchical design was stuck
on the entry sheet. Adds the React stand-in (SheetPanel) + the bridge:
- eeschema_embind: kicadSheetsGetTree() (SCHEMATIC::Hierarchy(), page-number
ordered: instance KIID path / parent / Sheetname / file / page / depth) and
kicadSheetsEnter(path) (validated synchronously, applied on the coroutine
via SCH_ACTIONS::changeSheet — same route as the wx pane, history intact).
OnSchSheetChanged pushes window.kicadCollab.onSheetsState after EVERY
navigation, wx-driven included, so the panel is event-driven.
- kicad → 9ab93b838e: navigate actions allowlisted for read-only viewers.
- SheetPanel.tsx: LayerPanel shell conventions; rendered + menu row only when
the hierarchy has >1 sheet instance; viewers boot it collapsed.
- tests: fixtures/demo/hier (root → Power, IO → Sub) + web/sheet-panel.spec
(list/order/depth, navigate + collab rebind, menu toggle/close, flat
schematic has no panel, bridge-driven navigation updates the panel);
SheetPanel.test.ts for the wire parser.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CtN6ASBvMGNbjPqY5boycg
f3119e690f