fix: adapt frontend for legacy Chrome and runtime config

frontend-web/src/env.ts

@@ -1,28 +1,33 @@
-type EnvValue = string | undefined;
-
-function readEnv(
-  key:
-    | "VITE_BACKEND_BASE_URL"
-    | "VITE_LANGGRAPH_BASE_URL"
-    | "VITE_CANVAS_LANGGRAPH_BASE_URL"
-    | "VITE_NOTE_API_BASE_URL"
-    | "VITE_AIPI_BACKENP_URL"
-    | "VITE_AIPI_FRONTEND_URL"
-    | "VITE_STATIC_WEBSITE_ONLY"
-    | "VITE_GITHUB_OAUTH_TOKEN",
-): EnvValue {
-  const value = import.meta.env[key];
-  return typeof value === "string" && value.trim() ? value : undefined;
-}
-
-export const env = {
-  NEXT_PUBLIC_BACKEND_BASE_URL: readEnv("VITE_BACKEND_BASE_URL"),
-  NEXT_PUBLIC_LANGGRAPH_BASE_URL: readEnv("VITE_LANGGRAPH_BASE_URL"),
-  // Canvas page uses its own LangGraph base URL so it can be independently
-  // routed (e.g. a separate canvas-agent server). Falls back to the main URL.
-  NEXT_PUBLIC_CANVAS_LANGGRAPH_BASE_URL: readEnv("VITE_CANVAS_LANGGRAPH_BASE_URL"),
-  NEXT_PUBLIC_NOTE_API_BASE_URL: readEnv("VITE_NOTE_API_BASE_URL"),
-  NEXT_PUBLIC_NOTEBOOK_API_BASE_URL: readEnv("VITE_AIPI_BACKENP_URL"),
-  NEXT_PUBLIC_STATIC_WEBSITE_ONLY: readEnv("VITE_STATIC_WEBSITE_ONLY"),
-  GITHUB_OAUTH_TOKEN: readEnv("VITE_GITHUB_OAUTH_TOKEN"),
-};
+type EnvValue = string | undefined;
+
+declare global {
+  interface Window {
+    __CM_RUNTIME_CONFIG__?: Record<string, string | undefined>;
+  }
+}
+
+export function readRuntimeEnv(key: string): EnvValue {
+  const runtimeValue =
+    typeof window !== "undefined" ? window.__CM_RUNTIME_CONFIG__?.[key] : undefined;
+  if (typeof runtimeValue === "string" && runtimeValue.trim()) {
+    return runtimeValue.trim();
+  }
+  const value = import.meta.env[key];
+  return typeof value === "string" && value.trim() ? value : undefined;
+}
+
+export function readRuntimeFlag(key: string): boolean {
+  return readRuntimeEnv(key) === "true";
+}
+
+export const env = {
+  NEXT_PUBLIC_BACKEND_BASE_URL: readRuntimeEnv("VITE_BACKEND_BASE_URL"),
+  NEXT_PUBLIC_LANGGRAPH_BASE_URL: readRuntimeEnv("VITE_LANGGRAPH_BASE_URL"),
+  // Canvas page uses its own LangGraph base URL so it can be independently
+  // routed (e.g. a separate canvas-agent server). Falls back to the main URL.
+  NEXT_PUBLIC_CANVAS_LANGGRAPH_BASE_URL: readRuntimeEnv("VITE_CANVAS_LANGGRAPH_BASE_URL"),
+  NEXT_PUBLIC_NOTE_API_BASE_URL: readRuntimeEnv("VITE_NOTE_API_BASE_URL"),
+  NEXT_PUBLIC_NOTEBOOK_API_BASE_URL: readRuntimeEnv("VITE_AIPI_BACKENP_URL"),
+  NEXT_PUBLIC_STATIC_WEBSITE_ONLY: readRuntimeEnv("VITE_STATIC_WEBSITE_ONLY"),
+  GITHUB_OAUTH_TOKEN: readRuntimeEnv("VITE_GITHUB_OAUTH_TOKEN"),
+};