diff --git a/design-shotgun/SKILL.md b/design-shotgun/SKILL.md
index 6c3b3f07..080754e6 100644
--- a/design-shotgun/SKILL.md
+++ b/design-shotgun/SKILL.md
@@ -594,6 +594,7 @@ After all agents complete:
 image list from whatever variant files actually exist, not a hardcoded A/B/C list:
 
 ```bash
+setopt +o nomatch 2>/dev/null || true  # zsh compat
 _IMAGES=$(ls "$_DESIGN_DIR"/variant-*.png 2>/dev/null | tr '\n' ',' | sed 's/,$//')
 ```
 
diff --git a/design-shotgun/SKILL.md.tmpl b/design-shotgun/SKILL.md.tmpl
index 3e3984e2..436c8bc6 100644
--- a/design-shotgun/SKILL.md.tmpl
+++ b/design-shotgun/SKILL.md.tmpl
@@ -246,6 +246,7 @@ After all agents complete:
 image list from whatever variant files actually exist, not a hardcoded A/B/C list:
 
 ```bash
+setopt +o nomatch 2>/dev/null || true  # zsh compat
 _IMAGES=$(ls "$_DESIGN_DIR"/variant-*.png 2>/dev/null | tr '\n' ',' | sed 's/,$//')
 ```
 
diff --git a/package.json b/package.json
index 7d68f04d..55f7a9fb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "0.13.0.0",
+  "version": "0.13.3.0",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",
diff --git a/test/gen-skill-docs.test.ts b/test/gen-skill-docs.test.ts
index 3091429f..3bbc1869 100644
--- a/test/gen-skill-docs.test.ts
+++ b/test/gen-skill-docs.test.ts
@@ -1276,16 +1276,27 @@ describe('Codex generation (--host codex)', () => {
   });
 
   // Dynamic discovery of expected Codex skills: all templates except /codex
+  // Also excludes skills where .agents/skills/{name} is a symlink back to the repo root
+  // (vendored dev mode — gen-skill-docs skips these to avoid overwriting Claude SKILL.md)
   const CODEX_SKILLS = (() => {
     const skills: Array<{ dir: string; codexName: string }> = [];
+    const isSymlinkLoop = (codexName: string): boolean => {
+      const agentSkillDir = path.join(ROOT, '.agents', 'skills', codexName);
+      try {
+        return fs.realpathSync(agentSkillDir) === fs.realpathSync(ROOT);
+      } catch { return false; }
+    };
     if (fs.existsSync(path.join(ROOT, 'SKILL.md.tmpl'))) {
-      skills.push({ dir: '.', codexName: 'gstack' });
+      if (!isSymlinkLoop('gstack')) {
+        skills.push({ dir: '.', codexName: 'gstack' });
+      }
     }
     for (const entry of fs.readdirSync(ROOT, { withFileTypes: true })) {
       if (!entry.isDirectory() || entry.name.startsWith('.') || entry.name === 'node_modules') continue;
       if (entry.name === 'codex') continue; // /codex is excluded from Codex output
       if (!fs.existsSync(path.join(ROOT, entry.name, 'SKILL.md.tmpl'))) continue;
       const codexName = entry.name.startsWith('gstack-') ? entry.name : `gstack-${entry.name}`;
+      if (isSymlinkLoop(codexName)) continue;
       skills.push({ dir: entry.name, codexName });
     }
     return skills;