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

tools/rl_training_tool.py

@@ -44,6 +44,8 @@ from dataclasses import dataclass
 from pathlib import Path
 from typing import Any, Dict, List, Optional
 
+from hermes_constants import get_hermes_home
+
 logger = logging.getLogger(__name__)
 
 # ============================================================================
@@ -55,7 +57,7 @@ HERMES_ROOT = Path(__file__).parent.parent
 TINKER_ATROPOS_ROOT = HERMES_ROOT / "tinker-atropos"
 ENVIRONMENTS_DIR = TINKER_ATROPOS_ROOT / "tinker_atropos" / "environments"
 CONFIGS_DIR = TINKER_ATROPOS_ROOT / "configs"
-LOGS_DIR = Path(os.getenv("HERMES_HOME", Path.home() / ".hermes")) / "logs" / "rl_training"
+LOGS_DIR = get_hermes_home() / "logs" / "rl_training"
 
 def _ensure_logs_dir():
     """Lazily create logs directory on first use (avoid side effects at import time)."""