refactor: consolidate get_hermes_home() and parse_reasoning_effort() (#3062)

Centralizes two widely-duplicated patterns into hermes_constants.py:

1. get_hermes_home() — Path resolution for ~/.hermes (HERMES_HOME env var)
   - Was copy-pasted inline across 30+ files as:
     Path(os.getenv("HERMES_HOME", Path.home() / ".hermes"))
   - Now defined once in hermes_constants.py (zero-dependency module)
   - hermes_cli/config.py re-exports it for backward compatibility
   - Removed local wrapper functions in honcho_integration/client.py,
     tools/website_policy.py, tools/tirith_security.py, hermes_cli/uninstall.py

2. parse_reasoning_effort() — Reasoning effort string validation
   - Was copy-pasted in cli.py, gateway/run.py, cron/scheduler.py
   - Same validation logic: check against (xhigh, high, medium, low, minimal, none)
   - Now defined once in hermes_constants.py, called from all 3 locations
   - Warning log for unknown values kept at call sites (context-specific)

31 files changed, net +31 lines (125 insertions, 94 deletions)
Full test suite: 6179 passed, 0 failed

agent/anthropic_adapter.py

@@ -14,6 +14,8 @@ import json
 import logging
 import os
 from pathlib import Path
+
+from hermes_constants import get_hermes_home
 from types import SimpleNamespace
 from typing import Any, Dict, List, Optional, Tuple
 
@@ -450,7 +452,7 @@ _OAUTH_CLIENT_ID = "9d1c250a-e61b-44d9-88ed-5944d1962f5e"
 _OAUTH_TOKEN_URL = "https://console.anthropic.com/v1/oauth/token"
 _OAUTH_REDIRECT_URI = "https://console.anthropic.com/oauth/code/callback"
 _OAUTH_SCOPES = "org:create_api_key user:profile user:inference"
-_HERMES_OAUTH_FILE = Path(os.getenv("HERMES_HOME", str(Path.home() / ".hermes"))) / ".anthropic_oauth.json"
+_HERMES_OAUTH_FILE = get_hermes_home() / ".anthropic_oauth.json"
 
 
 def _generate_pkce() -> tuple:

agent/prompt_builder.py

@@ -8,6 +8,8 @@ import logging
 import os
 import re
 from pathlib import Path
+
+from hermes_constants import get_hermes_home
 from typing import Optional
 
 logger = logging.getLogger(__name__)
@@ -320,7 +322,7 @@ def build_skills_system_prompt(
     match skills by meaning, not just name.
     Filters out skills incompatible with the current OS platform.
     """
-    hermes_home = Path(os.getenv("HERMES_HOME", Path.home() / ".hermes"))
+    hermes_home = get_hermes_home()
     skills_dir = hermes_home / "skills"
 
     if not skills_dir.exists():
@@ -449,7 +451,7 @@ def load_soul_md() -> Optional[str]:
     except Exception as e:
         logger.debug("Could not ensure HERMES_HOME before loading SOUL.md: %s", e)
 
-    soul_path = Path(os.getenv("HERMES_HOME", Path.home() / ".hermes")) / "SOUL.md"
+    soul_path = get_hermes_home() / "SOUL.md"
     if not soul_path.exists():
         return None
     try: