chore: import upstream snapshot with attribution

web/src/apis/graph_api.js

@@ -0,0 +1,51 @@
+import { apiGet } from './base'
+
+export const graphApi = {
+  getGraphs: async () => {
+    return await apiGet('/api/graph/list', {}, true)
+  },
+
+  getSubgraph: async (params) => {
+    const {
+      kb_id,
+      node_label = '*',
+      max_depth = 2,
+      max_nodes = 100,
+      exclude_chunk = false
+    } = params
+
+    if (!kb_id) {
+      throw new Error('kb_id is required')
+    }
+
+    const queryParams = new URLSearchParams({
+      kb_id,
+      node_label,
+      max_depth: max_depth.toString(),
+      max_nodes: max_nodes.toString(),
+      exclude_chunk: exclude_chunk.toString()
+    })
+
+    return await apiGet(`/api/graph/subgraph?${queryParams.toString()}`, {}, true)
+  },
+
+  getStats: async (kb_id) => {
+    if (!kb_id) {
+      throw new Error('kb_id is required')
+    }
+
+    const queryParams = new URLSearchParams({ kb_id })
+    return await apiGet(`/api/graph/stats?${queryParams.toString()}`, {}, true)
+  },
+
+  getLabels: async (kb_id) => {
+    if (!kb_id) {
+      throw new Error('kb_id is required')
+    }
+
+    const queryParams = new URLSearchParams({ kb_id })
+    return await apiGet(`/api/graph/labels?${queryParams.toString()}`, {}, true)
+  }
+}
+
+export const unifiedApi = graphApi