Add time/date access for Ikario and Tavily MCP specification

Major changes:
- Added current date/time to system prompt so Ikario always knows when it is
- Created comprehensive Tavily MCP integration spec (10 features)
- Updated .gitignore to exclude node_modules

Time Access Feature:
- Modified buildSystemPrompt in server/routes/messages.js
- Modified buildSystemPrompt in server/routes/claude.js
- Ikario now receives: date, time, ISO timestamp, timezone
- Added debug logging to verify system prompt

Tavily MCP Spec (app_spec_tavily_mcp.txt):
- Internet access via Tavily search API
- 10 detailed features with implementation steps
- Compatible with existing ikario-memory MCP
- Provides real-time web search and news search

🤖 Generated with Claude Code

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

autonomous_agent_demo.py

@@ -15,8 +15,15 @@ Example Usage:
 import argparse
 import asyncio
 import os
+import sys
 from pathlib import Path
 
+# Fix Windows encoding issues with emojis and Unicode characters
+if sys.platform == 'win32':
+    import io
+    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='replace')
+    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8', errors='replace')
+
 from dotenv import load_dotenv
 from agent import run_autonomous_agent