chore: bump version and changelog (v0.15.8.1)

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

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changelog
 
+## [0.15.8.1] - 2026-04-05 — Community PR Triage + Error Polish
+
+Closed 12 redundant community PRs, merged 2 ready PRs (#798, #776), and expanded the friendly OpenAI error to every design command. If your org isn't verified, you now get a clear message with the right URL instead of a raw JSON dump, no matter which design command you run.
+
+### Fixed
+
+- **Friendly OpenAI org error on all design commands.** Previously only `$D generate` showed a user-friendly message when your org wasn't verified. Now `$D evolve`, `$D iterate`, `$D variants`, and `$D check` all show the same clear message with the verification URL.
+
+### Added
+
+- **>128KB regression test for Codex session discovery.** Documents the current buffer limitation so future Codex versions with larger session_meta will surface cleanly instead of silently breaking.
+
+### For contributors
+
+- Closed 12 redundant community PRs (6 Gonzih security fixes shipped in v0.15.7.0, 6 stedfn duplicates). Kept #752 open (symlink gap in design serve). Thank you @Gonzih, @stedfn, @itstimwhite for the contributions.
+
 ## [0.15.8.0] - 2026-04-04 — Smarter Reviews
 
 Code reviews now learn from your decisions. Skip a finding once and it stays quiet until the code changes. Specialists auto-suggest test stubs alongside their findings. And silent specialists that never find anything get auto-gated so reviews stay fast.

VERSION

@@ -1 +1 @@
-0.15.8.0
+0.15.8.1