fix: use bracket notation for env variable access in TypeScript

Fix TypeScript errors when accessing environment variables from index
signatures. Use bracket notation for CI and SOCKET_CLI_DEBUG to satisfy
TypeScript's index signature requirements.

Author: jdalton

src/utils/agent.mts

@@ -1,3 +1,4 @@
+import { logger } from '@socketsecurity/registry/lib/logger'
 import { getOwn } from '@socketsecurity/registry/lib/objects'
 import { spawn } from '@socketsecurity/registry/lib/spawn'
 import { Spinner } from '@socketsecurity/registry/lib/spinner'
@@ -41,19 +42,20 @@ export function runAgentInstall(
   // In CI mode, pnpm uses --frozen-lockfile by default, which prevents lockfile updates.
   // We need to explicitly disable it when updating the lockfile with overrides.
   const isCi = constants.ENV.CI
-  const installArgs = isPnpm && isCi
-    ? ['install', '--no-frozen-lockfile', ...args]
-    : ['install', ...args]
+  const installArgs =
+    isPnpm && isCi
+      ? ['install', '--no-frozen-lockfile', ...args]
+      : ['install', ...args]
 
   // Debug logging for Windows CI issues.
-  if (constants.WIN32 && (isCi || process.env.SOCKET_CLI_DEBUG)) {
-    console.error(`[DEBUG] Windows runAgentInstall:`)
-    console.error(`  agent: ${agent}`)
-    console.error(`  isPnpm: ${isPnpm}`)
-    console.error(`  isCi: ${isCi}`)
-    console.error(`  constants.ENV.CI: ${constants.ENV.CI}`)
-    console.error(`  process.env.CI: ${process.env.CI}`)
-    console.error(`  installArgs: ${JSON.stringify(installArgs)}`)
+  if (constants.WIN32 && (isCi || process.env['SOCKET_CLI_DEBUG'])) {
+    logger.error(`[DEBUG] Windows runAgentInstall:`)
+    logger.error(`  agent: ${agent}`)
+    logger.error(`  isPnpm: ${isPnpm}`)
+    logger.error(`  isCi: ${isCi}`)
+    logger.error(`  constants.ENV.CI: ${constants.ENV.CI}`)
+    logger.error(`  process.env.CI: ${process.env['CI']}`)
+    logger.error(`  installArgs: ${JSON.stringify(installArgs)}`)
   }
 
   return spawn(agentExecPath, installArgs, {