feat: prisma schema, groups API, deploy workflow

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

@@ -0,0 +1,34 @@
+import { requireAuth } from '~/server/utils/auth'
+import { canvases, userGroups } from '~/server/utils/db'
+
+export default defineEventHandler(async (event) => {
+  const user = requireAuth(event)
+
+  // Get all canvases the user can access
+  const userGroupIds = Array.from(userGroups.values())
+    .filter(membership => membership.userId === user.id)
+    .map(membership => membership.groupId)
+
+  const accessibleCanvases = Array.from(canvases.values()).filter(canvas => {
+    // User can see their own canvases
+    if (canvas.ownerId === user.id) return true
+    // User can see public canvases
+    if (canvas.isPublic) return true
+    // User can see group canvases they're a member of
+    if (canvas.groupId && userGroupIds.includes(canvas.groupId)) return true
+    return false
+  })
+
+  const canvasList = accessibleCanvases.map(canvas => ({
+    id: canvas.id,
+    name: canvas.name,
+    ownerId: canvas.ownerId,
+    createdAt: canvas.createdAt,
+    updatedAt: canvas.updatedAt,
+    isPublic: canvas.isPublic,
+    groupId: canvas.groupId,
+    nodeCount: canvas.nodes.length
+  }))
+
+  return { canvases: canvasList }
+})