Added missing doc strings for Tanstack queries

javascript/ql/lib/semmle/javascript/frameworks/ClientRequests.qll

@@ -862,6 +862,10 @@ module ClientRequest {
     }
   }
 
+  /**
+   * Threat model source representing HTTP response data.
+   * Marks nodes originating from a client request's response data as tainted.
+   */
   private class ClientRequestThreatModel extends ThreatModelSource::Range {
     ClientRequestThreatModel() { this = any(ClientRequest r).getAResponseDataNode() }
 
@@ -870,6 +874,10 @@ module ClientRequest {
     override string getSourceType() { result = "HTTP response data" }
   }
 
+  /**
+   * An additional taint step that captures taint propagation from the receiver of fetch response methods
+   * (such as "json", "text", "blob", and "arrayBuffer") to the call result.
+   */
   class FetchResponseStep extends TaintTracking::AdditionalTaintStep {
     override predicate step(DataFlow::Node node1, DataFlow::Node node2) {
       exists(DataFlow::MethodCallNode call |

javascript/ql/lib/semmle/javascript/frameworks/Fetch.qll

@@ -1,5 +1,13 @@
+/**
+ * Provides an additional flow step that propagates data from the receiver of fetch response methods.
+ */
+
 private import javascript
 
+/**
+ * An additional flow step that propagates data from the receiver of fetch response methods
+ * (like "json", "text", "blob", and "arrayBuffer") to the call result.
+ */
 class Fetch extends DataFlow::AdditionalFlowStep {
   override predicate step(DataFlow::Node node1, DataFlow::Node node2) {
     exists(DataFlow::MethodCallNode call |

javascript/ql/lib/semmle/javascript/frameworks/Tanstack.qll

@@ -1,5 +1,13 @@
+/**
+ * Provides classes and predicates modeling the Tanstack/react-query library.
+ */
+
 private import javascript
 
+/**
+ * An additional flow step that propagates data from the return value of the query function,
+ * defined in a useQuery call from the '@tanstack/react-query' module, to the 'data' property.
+ */
 class TanstackStep extends DataFlow::AdditionalFlowStep {
   override predicate step(DataFlow::Node node1, DataFlow::Node node2) {
     exists(DataFlow::CallNode useQuery |
@@ -17,6 +25,9 @@ class TanstackStep extends DataFlow::AdditionalFlowStep {
   }
 }
 
+/**
+ * Retrieves a call node representing a useQuery invocation from the '@tanstack/react-query' module.
+ */
 DataFlow::CallNode useQueryCall() {
   result = DataFlow::moduleImport("@tanstack/react-query").getAPropertyRead("useQuery").getACall()
 }