Remove unused MCP resources and update documentation

- Remove array_status, system_info, notifications_overview, and parity_status resources
- Keep only logs_stream resource (unraid://logs/stream) which is working properly
- Update README.md with current resource documentation and modern docker compose syntax
- Fix import path issues that were causing subscription errors
- Update environment configuration examples
- Clean up subscription manager to only include working log streaming

🤖 Generated with [Claude Code](https://claude.ai/code)

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

unraid_mcp/config/settings.py

@@ -0,0 +1,104 @@
+"""Configuration management for Unraid MCP Server.
+
+This module handles loading environment variables from multiple .env locations
+and provides all configuration constants used throughout the application.
+"""
+
+import os
+from pathlib import Path
+from typing import Union
+from dotenv import load_dotenv
+
+# Get the script directory (config module location)
+SCRIPT_DIR = Path(__file__).parent  # /home/user/code/unraid-mcp/unraid_mcp/config/
+UNRAID_MCP_DIR = SCRIPT_DIR.parent  # /home/user/code/unraid-mcp/unraid_mcp/
+PROJECT_ROOT = UNRAID_MCP_DIR.parent  # /home/user/code/unraid-mcp/
+
+# Load environment variables from .env file
+# In container: First try /app/.env.local (mounted), then project root .env
+dotenv_paths = [
+    Path('/app/.env.local'),  # Container mount point
+    PROJECT_ROOT / '.env.local',  # Project root .env.local
+    PROJECT_ROOT / '.env',  # Project root .env
+    UNRAID_MCP_DIR / '.env'  # Local .env in unraid_mcp/
+]
+
+for dotenv_path in dotenv_paths:
+    if dotenv_path.exists():
+        load_dotenv(dotenv_path=dotenv_path)
+        break
+
+# Core API Configuration
+UNRAID_API_URL = os.getenv("UNRAID_API_URL")
+UNRAID_API_KEY = os.getenv("UNRAID_API_KEY")
+
+# Server Configuration
+UNRAID_MCP_PORT = int(os.getenv("UNRAID_MCP_PORT", "6970"))
+UNRAID_MCP_HOST = os.getenv("UNRAID_MCP_HOST", "0.0.0.0")
+UNRAID_MCP_TRANSPORT = os.getenv("UNRAID_MCP_TRANSPORT", "streamable-http").lower()
+
+# SSL Configuration
+raw_verify_ssl = os.getenv("UNRAID_VERIFY_SSL", "true").lower()
+if raw_verify_ssl in ["false", "0", "no"]:
+    UNRAID_VERIFY_SSL: Union[bool, str] = False
+elif raw_verify_ssl in ["true", "1", "yes"]:
+    UNRAID_VERIFY_SSL = True
+else:  # Path to CA bundle
+    UNRAID_VERIFY_SSL = raw_verify_ssl
+
+# Logging Configuration
+LOG_LEVEL_STR = os.getenv('UNRAID_MCP_LOG_LEVEL', 'INFO').upper()
+LOG_FILE_NAME = os.getenv("UNRAID_MCP_LOG_FILE", "unraid-mcp.log")
+LOGS_DIR = PROJECT_ROOT / "logs"
+LOG_FILE_PATH = LOGS_DIR / LOG_FILE_NAME
+
+# Ensure logs directory exists
+LOGS_DIR.mkdir(parents=True, exist_ok=True)
+
+# HTTP Client Configuration
+TIMEOUT_CONFIG = {
+    'default': 30,
+    'disk_operations': 90,  # Longer timeout for SMART data queries
+}
+
+
+def validate_required_config() -> bool:
+    """Validate that required configuration is present.
+    
+    Returns:
+        bool: True if all required config is present, False otherwise.
+    """
+    required_vars = [
+        ("UNRAID_API_URL", UNRAID_API_URL),
+        ("UNRAID_API_KEY", UNRAID_API_KEY)
+    ]
+    
+    missing = []
+    for name, value in required_vars:
+        if not value:
+            missing.append(name)
+    
+    return len(missing) == 0, missing
+
+
+def get_config_summary() -> dict:
+    """Get a summary of current configuration (safe for logging).
+    
+    Returns:
+        dict: Configuration summary with sensitive data redacted.
+    """
+    is_valid, missing = validate_required_config()
+    
+    return {
+        'api_url_configured': bool(UNRAID_API_URL),
+        'api_url_preview': UNRAID_API_URL[:20] + '...' if UNRAID_API_URL else None,
+        'api_key_configured': bool(UNRAID_API_KEY),
+        'server_host': UNRAID_MCP_HOST,
+        'server_port': UNRAID_MCP_PORT,
+        'transport': UNRAID_MCP_TRANSPORT,
+        'ssl_verify': UNRAID_VERIFY_SSL,
+        'log_level': LOG_LEVEL_STR,
+        'log_file': str(LOG_FILE_PATH),
+        'config_valid': is_valid,
+        'missing_config': missing if not is_valid else None
+    }