[codecane] Add SDK environment info display for testing

Added getEnvironmentInfo() method to CodebuffClient that exposes both raw NEXT_PUBLIC_* environment variables and computed SDK constants (WEBSITE_URL, BACKEND_URL, WEBSOCKET_URL, IS_DEV, IS_TEST, IS_PROD).

Updated CLI welcome message to display SDK environment alongside CLI environment variables. This helps verify that env vars are flowing correctly through the build pipeline: build process -> CLI binary -> SDK.

Changes marked with [TEST] comments for easy identification and removal.

Author: brandonkachen

cli/src/chat.tsx

@@ -59,6 +59,7 @@ import { clientEnvVars } from '@codebuff/common/env-schema'
 import { openFileAtPath } from './utils/open-file'
 import { formatValidationError } from './utils/validation-error-formatting'
 import { createValidationErrorBlocks } from './utils/create-validation-error-blocks'
+import { getCodebuffClient } from './utils/codebuff-client'
 
 import type { User } from './utils/auth'
 import type { ToolName } from '@codebuff/sdk'
@@ -289,10 +290,37 @@ export const App = ({
 
       blocks.push({
         type: 'text',
-        content: `\nEnvironment variables:\n${envVarsList}`,
+        content: `\nCLI Environment variables:\n${envVarsList}`,
         marginTop: 1,
       })
 
+      // [TEST] Display SDK environment variables
+      const client = getCodebuffClient()
+      if (client) {
+        const sdkEnv = client.getEnvironmentInfo()
+        const sdkEnvLines = [
+          'Raw SDK env vars:',
+          ...Object.entries(sdkEnv.rawEnv).map(
+            ([key, value]) => `  ${key}=${value}`,
+          ),
+          '',
+          'Computed SDK constants:',
+          ...Object.entries(sdkEnv.computed).map(([key, value]) => {
+            const displayValue =
+              typeof value === 'string' && value.length > 50
+                ? value.substring(0, 47) + '...'
+                : String(value)
+            return `  ${key}=${displayValue}`
+          }),
+        ].join('\n')
+
+        blocks.push({
+          type: 'text',
+          content: `\nSDK Environment:\n${sdkEnvLines}`,
+          marginTop: 1,
+        })
+      }
+
       // Calculate path from home directory to repository root
       // agentsDir is typically in the root, so use its parent as the repository root
       const homeDir = os.homedir()

sdk/src/client.ts

@@ -1,6 +1,7 @@
-import { BACKEND_URL, WEBSITE_URL } from './constants'
+import { BACKEND_URL, WEBSITE_URL, WEBSOCKET_URL, IS_DEV, IS_TEST, IS_PROD } from './constants'
 import { run } from './run'
 import { API_KEY_ENV_VAR } from '../../common/src/old-constants'
+import { env } from '@codebuff/common/env'
 
 import type { RunOptions, CodebuffClientOptions } from './run'
 import type { RunState } from './run-state'
@@ -81,4 +82,29 @@ export class CodebuffClient {
       return false
     }
   }
+
+  /**
+   * [TEST] Get environment information from the SDK
+   *
+   * @returns Object containing SDK environment variables and computed constants
+   */
+  public getEnvironmentInfo() {
+    return {
+      // Raw env vars
+      rawEnv: {
+        NEXT_PUBLIC_CB_ENVIRONMENT: env.NEXT_PUBLIC_CB_ENVIRONMENT,
+        NEXT_PUBLIC_CODEBUFF_APP_URL: env.NEXT_PUBLIC_CODEBUFF_APP_URL,
+        NEXT_PUBLIC_CODEBUFF_BACKEND_URL: env.NEXT_PUBLIC_CODEBUFF_BACKEND_URL,
+      },
+      // Computed constants
+      computed: {
+        WEBSITE_URL,
+        BACKEND_URL,
+        WEBSOCKET_URL,
+        IS_DEV,
+        IS_TEST,
+        IS_PROD,
+      },
+    }
+  }
 }