init: custom proxmox MCP server with SSE impementation

.env.example

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+# Proxmox MCP Server - Environment Variables
+# Copy this file to .env and fill in your values
+
+# --- Proxmox API Configuration ---
+# Base URL of your Proxmox VE instance (without https://)
+PROXMOX_URL=pve.local.example.io:8006
+
+# Proxmox API User (e.g., "root@pam", "user@pve", "proxmox-mcp@pam")
+PROXMOX_USER=proxmox-mcp@pam
+
+# --- Token Authentication (Recommended) ---
+# IMPORTANT: Token ID is JUST the token name, NOT the full identifier!
+# If your full token is "proxmox-mcp@pam!mytoken", use only "mytoken"
+PROXMOX_TOKEN_ID=token
+
+# Token Secret Value (the long UUID-like string)
+PROXMOX_PASSWORD=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+
+# --- OR Password Authentication ---
+# If not using tokens, set PROXMOX_PASSWORD to the user's password
+# and leave PROXMOX_TOKEN_ID empty
+
+# --- SSL Verification ---
+# Set to 'true' in production, 'false' for self-signed certs in homelabs
+PROXMOX_VERIFY_SSL=false
+
+# --- MCP Transport Security ---
+# Comma-separated list of allowed Host header values (for reverse proxy access)
+# Supports wildcard ports with :* suffix (e.g., localhost:*)
+MCP_ALLOWED_HOSTS=hostname,localhost:*,127.0.0.1:*