fix: replace hardcoded ~/.hermes with display_hermes_home() in agent-facing text (#10285)

Tool schema descriptions and tool return values contained hardcoded
~/.hermes paths that the model sees and uses. When HERMES_HOME is set
to a custom path (Docker containers, profiles), the agent would still
reference ~/.hermes — looking at the wrong directory.

Fixes 6 locations across 5 files:
- tools/tts_tool.py: output_path schema description
- tools/cronjob_tools.py: script path schema description
- tools/skill_manager_tool.py: skill_manage schema description
- tools/skills_tool.py: two tool return messages
- agent/skill_commands.py: skill config injection text

All now use display_hermes_home() which resolves to the actual
HERMES_HOME path (e.g. /opt/data for Docker, ~/.hermes/profiles/X
for profiles, ~/.hermes for default).

Reported by: Sandeep Narahari (PrithviDevs)

tools/tts_tool.py

@@ -40,6 +40,8 @@ from pathlib import Path
 from typing import Callable, Dict, Any, Optional
 from urllib.parse import urljoin
 
+from hermes_constants import display_hermes_home
+
 logger = logging.getLogger(__name__)
 from tools.managed_tool_gateway import resolve_managed_tool_gateway
 from tools.tool_backend_helpers import managed_nous_tools_enabled, resolve_openai_audio_api_key
@@ -1050,7 +1052,7 @@ TTS_SCHEMA = {
             },
             "output_path": {
                 "type": "string",
-                "description": "Optional custom file path to save the audio. Defaults to ~/.hermes/audio_cache/<timestamp>.mp3"
+                "description": f"Optional custom file path to save the audio. Defaults to {display_hermes_home()}/audio_cache/<timestamp>.mp3"
             }
         },
         "required": ["text"]