fix(twitter): remove redundant inner 'import os' causing UnboundLocalError on configure

[Panniantong]

Problem

Fixes #183

agent-reach configure twitter-cookies "auth_token=...; ct0=..." prints:

✅ Twitter cookies configured!
[!] Could not sync to xreach session.json: cannot access local variable 'os' where it is not associated with a value

Root Cause

Inside _cmd_configure(), the twitter-cookies branch has a nested import os (line 954, inside a try block for the xreach test step):

else:
    import os          # ← the problem
    env = os.environ.copy()

Python's scoping rules treat any name binding (including import) as local to the entire function. So the module-level import os at line 15 was shadowed, making every os.xxx call before the inner import (line 927–941: os.path.join, os.makedirs, os.path.exists, os.chmod) raise:

UnboundLocalError: cannot access local variable 'os' where it is not associated with a value

Fix

Remove the redundant import os line — os is already imported at module level.

Verification

• python3 -c "import agent_reach.cli" → OK
• python3 -m pytest tests/ -x -q → 49 passed

[Panniantong]

Closing — this fix is no longer needed after PR #196 refactored the cookie parsing logic into a standalone helper function. The redundant import os was removed as part of that refactor. Thanks! 🙏