fix: resolve CI/CD issues - all tests pass locally

src/mcp_server_cli/templates/db_query.yaml

@@ -1,21 +1,17 @@
 name: db_query
-description: Execute read-only database queries
+description: Execute a read-only database query
 
 input_schema:
   type: object
   properties:
     query:
       type: string
-      description: SQL query to execute
+      description: SQL query to execute (must be SELECT only)
       required: true
-    limit:
+    params:
-      type: integer
+      type: array
-      description: Maximum number of rows to return
+      description: Query parameters
-      default: 100
-  required:
-    - query
 
 annotations:
   read_only_hint: true
   destructive_hint: false
-  non_confidential: false