feat: Initialize project with core dependencies, Vultr API client, customer database service, and migration documentation.

README.md

@@ -61,6 +61,25 @@ VULTR_API_KEY=your_vultr_api_key_here
 HOST=0.0.0.0
 PORT=8000
 LOG_LEVEL=info
+
+# Billing Database Configuration (optional, for billing tools)
+# Single server format:
+BILLING_DB_HOST=localhost
+BILLING_DB_USER=root
+BILLING_DB_PASS=password
+BILLING_DB_NAME=billing_db
+
+# Multiple servers format (BILLING_DB_1_, BILLING_DB_2_, etc.):
+# BILLING_DB_1_HOST=server1.example.com
+# BILLING_DB_1_USER=user1
+# BILLING_DB_1_PASS=pass1
+# BILLING_DB_1_NAME=db1
+# BILLING_DB_1_ALIAS="Primary Server"
+# BILLING_DB_2_HOST=server2.example.com
+# BILLING_DB_2_USER=user2
+# BILLING_DB_2_PASS=pass2
+# BILLING_DB_2_NAME=db2
+# BILLING_DB_2_ALIAS="Backup Server"
 ```
 
 ### Getting Vultr API Key
@@ -109,6 +128,14 @@ The server will start on `http://0.0.0.0:8000` by default.
 - `list_plans` - List available Vultr plans
 - `list_os` - List available Vultr operating systems
 
+#### Billing Database Management
+- `billing_check_connection` - Check billing database connection
+- `billing_list_servers` - List configured billing database servers and snapshot status
+- `billing_refresh_snapshot` - Update the local data snapshot from the live database
+- `billing_search_customers` - Search customers from the local snapshot
+- `billing_get_customer_details` - Get detailed customer information from the local snapshot
+- `billing_get_summary` - Get customer statistics summary from the local snapshot
+
 ### Example API Calls
 
 #### Using curl