feat: replace n8n_create_data_table with n8n_manage_datatable (10 actions)

Replaces the single-purpose n8n_create_data_table tool with a comprehensive
n8n_manage_datatable tool covering all 10 n8n data table API endpoints:

Table operations: createTable, listTables, getTable, updateTable, deleteTable
Row operations: getRows, insertRows, updateRows, upsertRows, deleteRows

- Filter system with and/or logic and 8 condition operators
- Dry-run support for updateRows, upsertRows, deleteRows
- Pagination, sorting, and full-text search for row listing
- 9 new N8nApiClient methods for all data table endpoints
- Shared error handler and consolidated Zod schemas
- Comprehensive tool documentation with examples per action
- 36 handler tests + 18 API client tests

BREAKING: n8n_create_data_table removed. Use n8n_manage_datatable with
action="createTable" instead.

Based on work by @djakielski in PR #646.
Co-Authored-By: Dominik Jakielski <dominik.jakielski@urlaubsguru.de>

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/mcp/tools-n8n-manager.ts

@@ -608,35 +608,49 @@ export const n8nManagementTools: ToolDefinition[] = [
     },
   },
   {
-    name: 'n8n_create_data_table',
-    description: 'Create a new data table in n8n. Requires n8n enterprise or cloud with data tables feature.',
+    name: 'n8n_manage_datatable',
+    description: `Manage n8n data tables and rows. Actions: createTable, listTables, getTable, updateTable, deleteTable, getRows, insertRows, updateRows, upsertRows, deleteRows. Requires n8n enterprise/cloud with data tables feature.`,
     inputSchema: {
       type: 'object',
       properties: {
-        name: { type: 'string', description: 'Name for the data table' },
+        action: {
+          type: 'string',
+          enum: ['createTable', 'listTables', 'getTable', 'updateTable', 'deleteTable', 'getRows', 'insertRows', 'updateRows', 'upsertRows', 'deleteRows'],
+          description: 'Operation to perform',
+        },
+        tableId: { type: 'string', description: 'Data table ID (required for all actions except createTable and listTables)' },
+        name: { type: 'string', description: 'For createTable/updateTable: table name' },
         columns: {
           type: 'array',
-          description: 'Column definitions',
+          description: 'For createTable: column definitions',
           items: {
             type: 'object',
             properties: {
-              name: { type: 'string', description: 'Column name' },
-              type: {
-                type: 'string',
-                enum: ['string', 'number', 'boolean', 'date', 'json'],
-                description: 'Column data type',
-              },
+              name: { type: 'string' },
+              type: { type: 'string', enum: ['string', 'number', 'boolean', 'date', 'json'] },
             },
             required: ['name'],
           },
         },
+        data: { description: 'For insertRows: array of row objects. For updateRows/upsertRows: object with column values.' },
+        filter: {
+          type: 'object',
+          description: 'For getRows/updateRows/upsertRows/deleteRows: {type?: "and"|"or", filters: [{columnName, condition, value}]}',
+        },
+        limit: { type: 'number', description: 'For listTables/getRows: max results (1-100)' },
+        cursor: { type: 'string', description: 'For listTables/getRows: pagination cursor' },
+        sortBy: { type: 'string', description: 'For getRows: "columnName:asc" or "columnName:desc"' },
+        search: { type: 'string', description: 'For getRows: text search across string columns' },
+        returnType: { type: 'string', enum: ['count', 'id', 'all'], description: 'For insertRows: what to return (default: count)' },
+        returnData: { type: 'boolean', description: 'For updateRows/upsertRows/deleteRows: return affected rows (default: false)' },
+        dryRun: { type: 'boolean', description: 'For updateRows/upsertRows/deleteRows: preview without applying (default: false)' },
       },
-      required: ['name'],
+      required: ['action'],
     },
     annotations: {
-      title: 'Create Data Table',
+      title: 'Manage Data Tables',
       readOnlyHint: false,
-      destructiveHint: false,
+      destructiveHint: true,
       openWorldHint: true,
     },
   },