asdf

Squash the current repository state back into one baseline commit while
preserving the README reframing and repository contents.

Constraint: User explicitly requested a single squashed commit with subject "asdf"
Confidence: high
Scope-risk: broad
Reversibility: clean
Directive: This commit intentionally rewrites published history; coordinate before future force-pushes
Tested: git status clean; local history rewritten to one commit; force-pushed main to origin and instructkr
Not-tested: Fresh clone verification after push

src/utils/authPortable.ts

@@ -0,0 +1,19 @@
+import { execa } from 'execa'
+import { getMacOsKeychainStorageServiceName } from 'src/utils/secureStorage/macOsKeychainHelpers.js'
+
+export async function maybeRemoveApiKeyFromMacOSKeychainThrows(): Promise<void> {
+  if (process.platform === 'darwin') {
+    const storageServiceName = getMacOsKeychainStorageServiceName()
+    const result = await execa(
+      `security delete-generic-password -a $USER -s "${storageServiceName}"`,
+      { shell: true, reject: false },
+    )
+    if (result.exitCode !== 0) {
+      throw new Error('Failed to delete keychain entry')
+    }
+  }
+}
+
+export function normalizeApiKeyForConfig(apiKey: string): string {
+  return apiKey.slice(-20)
+}