Fix execution brain tool permissions in non-interactive mode

Add --allowedTools flag to Claude Code CLI subprocess so tools are
pre-approved and don't prompt for permission in pipe mode.

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

cheddahbot/llm.py

@@ -145,6 +145,7 @@ class LLMAdapter:
             claude_bin, "-p",
             "--output-format", "json",
             "--tools", tools,
+            "--allowedTools", tools,
         ]
         if model:
             cmd.extend(["--model", model])