Dune Analytics MCP Server

# Tasks: Add Query Management Tools ## 1. Create Query Tool - [x] 1.1 Implement create_query tool with @mcp.tool decorator - [x] 1.2 Add name, query_sql, description, is_private parameters - [x] 1.3 Default is_private to True for security - [x] 1.4 Return new query_id on success ## 2. Update Query Tool - [x] 2.1 Implement update_query tool - [x] 2.2 Add query_id (required), query_sql, name, description (optional) - [x] 2.3 Only update provided fields - [x] 2.4 Return success status ## 3. Archive Query Tool - [x] 3.1 Implement archive_query tool - [x] 3.2 Add query_id parameter - [x] 3.3 Return success status ## 4. Error Handling - [x] 4.1 Handle query not found (404) - [x] 4.2 Handle permission denied errors - [x] 4.3 Validate query_sql is non-empty on create ## 5. Validation - [x] 5.1 Test create_query with valid SQL - [x] 5.2 Test update_query on owned query - [x] 5.3 Test archive_query on owned query - [x] 5.4 Verify private default on create