chore: remove unused imports and dead locals (ruff F401/F841 sweep)
Cleans F401 unused imports and F841 dead local assignments across
root *.py, agent/, hermes_cli/, tools/, gateway/, cron/, tui_gateway/
(tests/, plugins/, skills/ excluded).
Intentionally KEPT (false positives / test-patch surfaces):
- agent/transports/__init__.py package re-exports
- cli.py browser_connect re-exports (DEFAULT_BROWSER_CDP_URL area,
used by tests/cli/test_cli_browser_connect.py)
- hermes_cli/main.py _prompt_auth_credentials_choice /
_model_flow_bedrock_api_key (accessed via main_mod attr in tests)
- gateway/run.py aliased replay_cleanup + whatsapp_identity re-exports
and _PORT_BINDING_PLATFORM_VALUES (test-referenced)
- hermes_cli/web_server.py get_running_pid (tests monkeypatch it) and
_OAUTH_TOKEN_URL availability probe
- hermes_cli/config.py get_process_hermes_home re-export (noqa'd F811
chain) and yaml availability-probe import
- hermes_cli/nous_subscription.py managed_nous_tools_enabled
(tests patch hermes_cli.nous_subscription.managed_nous_tools_enabled)
- try/except ImportError availability probes (env_loader, tts_tool,
mcp_tool, web_server anthropic OAuth block)
- tools/web_tools.py noqa F401 re-exports
- hermes_cli/setup_whatsapp_cloud.py:263 'proceed' skipped: possible
missing-guard bug, flagged for separate review
- unused function parameters (signature changes out of scope)
Side-effect RHS calls preserved where only the binding was dead
(e.g. web_server proc = _spawn_hermes_action -> bare call).
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