ci: raise CLAUDE.md audit turn limit to 25 and pin Opus 4.8

The CLAUDE.md audit job often hit its 15-turn cap before finishing the
review, ending without a verdict. Raise the limit to 25 and pin the model
to claude-opus-4-8 instead of inheriting the action default.

Author: d-cs

.github/workflows/claude-md-audit.yml

@@ -43,7 +43,8 @@ jobs:
           allowed_bots: "devin-ai-integration[bot]"
 
           claude_args: |
-            --max-turns 15
+            --max-turns 25
+            --model claude-opus-4-8
             --allowedTools "Read,Glob,Grep,Bash(git diff:*)"
 
           prompt: |