fix: close redundant PRs + friendly error on all design commands (v0.15.8.1) (#817)

* fix: friendly OpenAI org error on all design commands

Previously only generate.ts showed a user-friendly message when the
OpenAI org wasn't verified. Now evolve, iterate, variants, and check
all detect the 403 + "organization must be verified" pattern and show
a clear message with the correct verification URL.

* test: regression test for >128KB Codex session_meta

Documents the current 128KB buffer limitation. When Codex embeds
session_meta beyond 128KB, this test will fail, signaling the need
for a streaming parse or larger buffer.

* chore: bump version and changelog (v0.15.8.1)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

design/src/evolve.ts

@@ -71,6 +71,13 @@ export async function evolve(options: EvolveOptions): Promise<void> {
 
     if (!response.ok) {
       const error = await response.text();
+      if (response.status === 403 && error.includes("organization must be verified")) {
+        throw new Error(
+          "OpenAI organization verification required.\n"
+          + "Go to https://platform.openai.com/settings/organization to verify.\n"
+          + "After verification, wait up to 15 minutes for access to propagate.",
+        );
+      }
       throw new Error(`API error (${response.status}): ${error.slice(0, 300)}`);
     }