fix(mma-exec): add --dangerously-skip-permissions for headless file writes

Tier 3 workers need to read/write files in headless mode. Without this
flag, all file tool calls are blocked waiting for interactive permission.

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

scripts/claude_mma_exec.py

@@ -191,7 +191,7 @@ def execute_agent(role: str, prompt: str, docs: list[str]) -> str:
  ps_command = (
   "if (Test-Path 'C:\\projects\\misc\\setup_claude.ps1') "
   "{ . 'C:\\projects\\misc\\setup_claude.ps1' }; "
-  f"claude --model {model} --print"
+  f"claude --model {model} --print --dangerously-skip-permissions"
  )
  cmd = ['powershell.exe', '-NoProfile', '-Command', ps_command]
  try: