feat: add HTTP server mode for remote deployment with token auth

.env.example

@@ -29,22 +29,17 @@ MCP_SERVER_HOST=localhost
 # MCP_AUTH_TOKEN=optional-for-local-development
 
 # =========================
-# HTTP MODE CONFIGURATION
+# SIMPLE HTTP MODE
 # =========================
-# Used when running: npm run start:http or npm run dev:http
+# Used for private single-user deployments
 
-# HTTP Server Configuration
-MCP_PORT=3000
-MCP_HOST=0.0.0.0
-MCP_DOMAIN=localhost
+# Server mode: stdio (local) or http (remote)
+MCP_MODE=stdio
 
-# Authentication (REQUIRED for production HTTP mode)
-# Generate a secure token: openssl rand -hex 32
-# MCP_AUTH_TOKEN=your-secure-auth-token-here
+# HTTP Server Configuration (only used when MCP_MODE=http)
+PORT=3000
+HOST=0.0.0.0
 
-# CORS - Enable for browser-based access
-MCP_CORS=false
-
-# TLS Configuration (optional for HTTPS)
-# MCP_TLS_CERT=/path/to/cert.pem
-# MCP_TLS_KEY=/path/to/key.pem
+# Authentication token for HTTP mode (REQUIRED)
+# Generate with: openssl rand -base64 32
+AUTH_TOKEN=your-secure-token-here