Integrate Canvas V2 subgraphs, editable edges and AI runs

src/lib/canvas-loader.ts

@@ -1,9 +1,10 @@
+import { CANVAS_ACCEPT } from "./canvas-v2.ts";
 import { decodeSnapshot, type CanvasSnapshot, type CanvasRequest } from "./canvas-sync.ts";
 import { matchesRef, type Board } from "./workspace.ts";
 
 export async function loadBoardCanvas(request: CanvasRequest, workspaceRef: string, boardRef: string, signal?: AbortSignal) {
   const path = `workspaces/${encodeURIComponent(workspaceRef)}/materials/${encodeURIComponent(boardRef)}`;
-  const [board, snapshot] = await Promise.all([request<Board>(path, { signal }), request<CanvasSnapshot>(path + "/canvas", { signal })]);
+  const [board, snapshot] = await Promise.all([request<Board>(path, { signal }), request<CanvasSnapshot>(path + "/canvas", { signal, headers: { Accept: CANVAS_ACCEPT } })]);
   if (board.kind !== "board" || !matchesRef(board, boardRef) || typeof board.workspace_id !== "string" || !board.workspace_id) throw new Error("invalid_reference");
   return { board, snapshot: decodeSnapshot(snapshot) };
 }