feat: prisma schema, groups API, deploy workflow

app/server/api/canvas/index.post.ts

@@ -0,0 +1,36 @@
+import { requireAuth } from '~/server/utils/auth'
+import { canvases, userGroups } from '~/server/utils/db'
+import type { CanvasData } from '~/server/utils/db'
+
+export default defineEventHandler(async (event) => {
+  const user = requireAuth(event)
+  const body = await readBody(event)
+  const { name = 'New Canvas', nodes = [], edges = [], isPublic = false, groupId } = body
+
+  // Check group permissions if groupId is provided
+  if (groupId) {
+    const membership = Array.from(userGroups.values()).find(
+      m => m.userId === user.id && m.groupId === groupId
+    )
+    if (!membership) {
+      throw createError({ statusCode: 403, message: 'Not a member of this group' })
+    }
+  }
+
+  const id = `canvas-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
+  const canvas: CanvasData = {
+    id,
+    name,
+    nodes,
+    edges,
+    createdAt: new Date().toISOString(),
+    updatedAt: new Date().toISOString(),
+    ownerId: user.id,
+    groupId,
+    isPublic
+  }
+
+  canvases.set(id, canvas)
+
+  return { canvas }
+})