refactor: remove redundant local imports already available at module level

Sweep ~74 redundant local imports across 21 files where the same module
was already imported at the top level. Also includes type fixes and lint
cleanups on the same branch.

hermes_cli/config.py

@@ -2249,7 +2249,6 @@ def print_config_warnings(config: Optional[Dict[str, Any]] = None) -> None:
     if not issues:
         return
 
-    import sys
     lines = ["\033[33m⚠ Config issues detected in config.yaml:\033[0m"]
     for ci in issues:
         marker = "\033[31m✗\033[0m" if ci.severity == "error" else "\033[33m⚠\033[0m"
@@ -2264,7 +2263,6 @@ def warn_deprecated_cwd_env_vars(config: Optional[Dict[str, Any]] = None) -> Non
     These env vars are deprecated — the canonical setting is terminal.cwd
     in config.yaml.  Prints a migration hint to stderr.
     """
-    import os, sys
     messaging_cwd = os.environ.get("MESSAGING_CWD")
     terminal_cwd_env = os.environ.get("TERMINAL_CWD")
 
@@ -3273,7 +3271,6 @@ def _check_non_ascii_credential(key: str, value: str) -> str:
             bad_chars.append(f"  position {i}: {ch!r} (U+{ord(ch):04X})")
     sanitized = value.encode("ascii", errors="ignore").decode("ascii")
 
-    import sys
     print(
         f"\n  Warning: {key} contains non-ASCII characters that will break API requests.\n"
         f"  This usually happens when copy-pasting from a PDF, rich-text editor,\n"

hermes_cli/gateway.py

@@ -994,8 +994,6 @@ def get_systemd_linger_status() -> tuple[bool | None, str]:
     if not is_linux():
         return None, "not supported on this platform"
 
-    import shutil
-
     if not shutil.which("loginctl"):
         return None, "loginctl not found"
 
@@ -1347,7 +1345,6 @@ def _ensure_linger_enabled() -> None:
         return
 
     import getpass
-    import shutil
 
     username = getpass.getuser()
     linger_file = Path(f"/var/lib/systemd/linger/{username}")
@@ -1656,7 +1653,6 @@ def get_launchd_label() -> str:
 
 
 def _launchd_domain() -> str:
-    import os
     return f"gui/{os.getuid()}"
 
 

hermes_cli/main.py

@@ -618,7 +618,6 @@ def _exec_in_container(container_info: dict, cli_args: list):
         container_info: dict with backend, container_name, exec_user, hermes_bin
         cli_args: the original CLI arguments (everything after 'hermes')
     """
-    import shutil
 
     backend = container_info["backend"]
     container_name = container_info["container_name"]
@@ -1181,8 +1180,6 @@ def cmd_gateway(args):
 def cmd_whatsapp(args):
     """Set up WhatsApp: choose mode, configure, install bridge, pair via QR."""
     _require_tty("whatsapp")
-    import subprocess
-    from pathlib import Path
     from hermes_cli.config import get_env_value, save_env_value
 
     print()
@@ -1425,8 +1422,6 @@ def select_provider_and_model(args=None):
 
     # Read effective provider the same way the CLI does at startup:
     # config.yaml model.provider > env var > auto-detect
-    import os
-
     config_provider = None
     model_cfg = config.get("model")
     if isinstance(model_cfg, dict):
@@ -2132,7 +2127,6 @@ def _model_flow_nous(config, current_model="", args=None):
         save_env_value,
     )
     from hermes_cli.nous_subscription import prompt_enable_tool_gateway
-    import argparse
 
     state = get_provider_auth_state("nous")
     if not state or not state.get("access_token"):
@@ -2300,7 +2294,6 @@ def _model_flow_openai_codex(config, current_model=""):
         DEFAULT_CODEX_BASE_URL,
     )
     from hermes_cli.codex_models import get_codex_model_ids
-    import argparse
 
     status = get_codex_auth_status()
     if not status.get("logged_in"):
@@ -4287,9 +4280,7 @@ def _clear_bytecode_cache(root: Path) -> int:
         ]
         if os.path.basename(dirpath) == "__pycache__":
             try:
-                import shutil as _shutil
-
-                _shutil.rmtree(dirpath)
+                shutil.rmtree(dirpath)
                 removed += 1
             except OSError:
                 pass
@@ -4361,7 +4352,6 @@ def _build_web_ui(web_dir: Path, *, fatal: bool = False) -> bool:
     """
     if not (web_dir / "package.json").exists():
         return True
-    import shutil
 
     npm = shutil.which("npm")
     if not npm:
@@ -4398,7 +4388,6 @@ def _update_via_zip(args):
     Used on Windows when git file I/O is broken (antivirus, NTFS filter
     drivers causing 'Invalid argument' errors on file creation).
     """
-    import shutil
     import tempfile
     import zipfile
     from urllib.request import urlretrieve
@@ -4475,7 +4464,6 @@ def _update_via_zip(args):
     # breaks on this machine, keep base deps and reinstall the remaining extras
     # individually so update does not silently strip working capabilities.
     print("→ Updating Python dependencies...")
-    import subprocess
 
     uv_bin = shutil.which("uv")
     if uv_bin:
@@ -8078,7 +8066,6 @@ Examples:
                     return
                 line = _json.dumps(data, ensure_ascii=False) + "\n"
                 if args.output == "-":
-                    import sys
 
                     sys.stdout.write(line)
                 else:
@@ -8088,7 +8075,6 @@ Examples:
             else:
                 sessions = db.export_all(source=args.source)
                 if args.output == "-":
-                    import sys
 
                     for s in sessions:
                         sys.stdout.write(_json.dumps(s, ensure_ascii=False) + "\n")

hermes_cli/models.py

@@ -515,8 +515,6 @@ def check_nous_free_tier() -> bool:
     Returns False (assume paid) on any error — never blocks paying users.
     """
     global _free_tier_cache
-    import time
-
     now = time.monotonic()
     if _free_tier_cache is not None:
         cached_result, cached_at = _free_tier_cache
@@ -1259,7 +1257,6 @@ def detect_provider_for_model(
             from hermes_cli.auth import PROVIDER_REGISTRY
             pconfig = PROVIDER_REGISTRY.get(direct_match)
             if pconfig:
-                import os
                 for env_var in pconfig.api_key_env_vars:
                     if os.getenv(env_var, "").strip():
                         has_creds = True

hermes_cli/setup.py

@@ -849,7 +849,6 @@ def setup_model_provider(config: dict, *, quick: bool = False):
 
 def _check_espeak_ng() -> bool:
     """Check if espeak-ng is installed."""
-    import shutil
     return shutil.which("espeak-ng") is not None or shutil.which("espeak") is not None
 
 
@@ -1084,8 +1083,6 @@ def setup_tts(config: dict):
 def setup_terminal_backend(config: dict):
     """Configure the terminal execution backend."""
     import platform as _platform
-    import shutil
-
     print_header("Terminal Backend")
     print_info("Choose where Hermes runs shell commands and code.")
     print_info("This affects tool execution, file access, and isolation.")

hermes_cli/web_server.py

@@ -2324,12 +2324,10 @@ def start_server(
         )
 
     if open_browser:
-        import threading
         import webbrowser
 
         def _open():
-            import time as _t
-            _t.sleep(1.0)
+            time.sleep(1.0)
             webbrowser.open(f"http://{host}:{port}")
 
         threading.Thread(target=_open, daemon=True).start()