Perf/copilot cleanup and optimizations (#2447)

* perf: remove deprecated copilot feature, add ARM timeouts, fix race conditions

- Remove entire QueryCopilot feature (~50 files deleted, ~30 files cleaned)
- Remove CopilotConfigured and SampleDataLoaded metric phases
- Fix DatabaseTreeRendered 76% stuck rate (remove one-shot guard in useMetricPhases)
- Add 8s default timeout to ARM requests (AbortController-based)
- Fix MSAL token forceRefresh (true -> false, use cache)
- Add concurrency limit of 5 to collection loading in Explorer
- Remove orphaned SampleDataClient.ts and queryCopilotSampleData.json
- Clean up dead sampleDataConnectionInfo field from UserContext

* Clean up copilot and optimize initialization

* Clean up copilot and optimize initialization

src/Explorer/Menus/CommandBar/CommandBarComponentAdapter.tsx

@@ -12,7 +12,7 @@ import { isFabric } from "Platform/Fabric/FabricUtil";
 import { userContext } from "UserContext";
 import * as React from "react";
 import create, { UseStore } from "zustand";
-import { ConnectionStatusType, PoolIdType } from "../../../Common/Constants";
+import { ConnectionStatusType } from "../../../Common/Constants";
 import { CommandButtonComponentProps } from "../../Controls/CommandButton/CommandButtonComponent";
 import Explorer from "../../Explorer";
 import { useSelectedNode } from "../../useSelectedNode";
@@ -136,9 +136,7 @@ export const CommandBar: React.FC<Props> = ({ container }: Props) => {
 
   // Add connection status if needed (using the hook values we got at the top level)
   if ((isPhoenixNotebooks || isPhoenixFeatures) && connectionInfo?.status !== ConnectionStatusType.Connect) {
-    uiFabricControlButtons.unshift(
-      CommandBarUtil.createConnectionStatus(container, PoolIdType.DefaultPoolId, "connectionStatus"),
-    );
+    uiFabricControlButtons.unshift(CommandBarUtil.createConnectionStatus(container, "connectionStatus"));
   }
 
   const rootStyle = {

src/Explorer/Menus/CommandBar/CommandBarComponentButtonFactory.tsx

@@ -29,7 +29,7 @@ import { BrowseQueriesPane } from "../../Panes/BrowseQueriesPane/BrowseQueriesPa
 import { LoadQueryPane } from "../../Panes/LoadQueryPane/LoadQueryPane";
 import { SettingsPane, useDataPlaneRbac } from "../../Panes/SettingsPane/SettingsPane";
 import { useDatabases } from "../../useDatabases";
-import { SelectedNodeState, useSelectedNode } from "../../useSelectedNode";
+import { SelectedNodeState } from "../../useSelectedNode";
 import { ThemeToggleButton } from "./ThemeToggleButton";
 
 let counter = 0;
@@ -103,9 +103,7 @@ export function createStaticCommandBarButtons(
         commandButtonLabel: label,
         ariaLabel: label,
         hasPopup: true,
-        disabled:
-          useSelectedNode.getState().isQueryCopilotCollectionSelected() ||
-          selectedNodeState.isDatabaseNodeOrNoneSelected(),
+        disabled: selectedNodeState.isDatabaseNodeOrNoneSelected(),
       };
 
       newStoredProcedureBtn.children = createScriptCommandButtons(selectedNodeState);
@@ -260,8 +258,7 @@ function createOpenSynapseLinkDialogButton(container: Explorer): CommandButtonCo
     onCommandClick: () => container.openEnableSynapseLinkDialog(),
     commandButtonLabel: label,
     hasPopup: false,
-    disabled:
-      useSelectedNode.getState().isQueryCopilotCollectionSelected() || useNotebook.getState().isSynapseLinkUpdating,
+    disabled: useNotebook.getState().isSynapseLinkUpdating,
     ariaLabel: label,
   };
 }
@@ -360,9 +357,7 @@ export function createScriptCommandButtons(selectedNodeState: SelectedNodeState)
       commandButtonLabel: label,
       ariaLabel: label,
       hasPopup: true,
-      disabled:
-        useSelectedNode.getState().isQueryCopilotCollectionSelected() ||
-        selectedNodeState.isDatabaseNodeOrNoneSelected(),
+      disabled: selectedNodeState.isDatabaseNodeOrNoneSelected(),
       styles: {
         root: {
           backgroundColor: "var(--colorNeutralBackground1)",
@@ -396,9 +391,7 @@ export function createScriptCommandButtons(selectedNodeState: SelectedNodeState)
       commandButtonLabel: label,
       ariaLabel: label,
       hasPopup: true,
-      disabled:
-        useSelectedNode.getState().isQueryCopilotCollectionSelected() ||
-        selectedNodeState.isDatabaseNodeOrNoneSelected(),
+      disabled: selectedNodeState.isDatabaseNodeOrNoneSelected(),
       styles: {
         root: {
           backgroundColor: "var(--colorNeutralBackground1)",
@@ -432,9 +425,7 @@ export function createScriptCommandButtons(selectedNodeState: SelectedNodeState)
       commandButtonLabel: label,
       ariaLabel: label,
       hasPopup: true,
-      disabled:
-        useSelectedNode.getState().isQueryCopilotCollectionSelected() ||
-        selectedNodeState.isDatabaseNodeOrNoneSelected(),
+      disabled: selectedNodeState.isDatabaseNodeOrNoneSelected(),
       styles: {
         root: {
           backgroundColor: "var(--colorNeutralBackground1)",
@@ -469,7 +460,7 @@ function createOpenQueryButton(container: Explorer): CommandButtonComponentProps
     commandButtonLabel: label,
     ariaLabel: label,
     hasPopup: true,
-    disabled: useSelectedNode.getState().isQueryCopilotCollectionSelected(),
+    disabled: false,
   };
 }
 
@@ -483,7 +474,7 @@ function createOpenQueryFromDiskButton(): CommandButtonComponentProps {
     commandButtonLabel: label,
     ariaLabel: label,
     hasPopup: true,
-    disabled: useSelectedNode.getState().isQueryCopilotCollectionSelected(),
+    disabled: false,
   };
 }
 

src/Explorer/Menus/CommandBar/CommandBarUtil.tsx

@@ -7,12 +7,11 @@ import {
   IDropdownStyles,
   TooltipHost,
 } from "@fluentui/react";
-import { useQueryCopilot } from "hooks/useQueryCopilot";
 import { KeyboardHandlerMap } from "KeyboardShortcuts";
 import * as React from "react";
 import _ from "underscore";
 import ChevronDownIcon from "../../../../images/Chevron_down.svg";
-import { PoolIdType } from "../../../Common/Constants";
+
 import { StyleConstants } from "../../../Common/StyleConstants";
 import { configContext, Platform } from "../../../ConfigContext";
 import { Action, ActionModifiers } from "../../../Shared/Telemetry/TelemetryConstants";
@@ -64,11 +63,7 @@ export const convertButton = (btns: CommandButtonComponentProps[], backgroundCol
         onClick: btn.onCommandClick
           ? (ev?: React.MouseEvent<HTMLElement, MouseEvent> | React.KeyboardEvent<HTMLElement>) => {
               btn.onCommandClick(ev);
-              let copilotEnabled = false;
-              if (useQueryCopilot.getState().copilotEnabled && useQueryCopilot.getState().copilotUserDBEnabled) {
-                copilotEnabled = useQueryCopilot.getState().copilotEnabledforExecution;
-              }
-              TelemetryProcessor.trace(Action.ClickCommandBarButton, ActionModifiers.Mark, { label, copilotEnabled });
+              TelemetryProcessor.trace(Action.ClickCommandBarButton, ActionModifiers.Mark, { label });
             }
           : undefined,
         key: `${btn.commandButtonLabel}${index}`,
@@ -270,10 +265,10 @@ export const createMemoryTracker = (key: string): ICommandBarItemProps => {
   };
 };
 
-export const createConnectionStatus = (container: Explorer, poolId: PoolIdType, key: string): ICommandBarItemProps => {
+export const createConnectionStatus = (container: Explorer, key: string): ICommandBarItemProps => {
   return {
     key,
-    onRender: () => <ConnectionStatus container={container} poolId={poolId} />,
+    onRender: () => <ConnectionStatus container={container} />,
   };
 };
 

src/Explorer/Menus/CommandBar/ConnectionStatusComponent.tsx

@@ -14,15 +14,14 @@ import { useId } from "@fluentui/react-hooks";
 import { ActionButton, DefaultButton } from "@fluentui/react/lib/Button";
 import * as React from "react";
 import "../../../../less/hostedexplorer.less";
-import { ConnectionStatusType, ContainerStatusType, Notebook, PoolIdType } from "../../../Common/Constants";
+import { ConnectionStatusType, ContainerStatusType, Notebook } from "../../../Common/Constants";
 import Explorer from "../../Explorer";
 import { useNotebook } from "../../Notebook/useNotebook";
 import "../CommandBar/ConnectionStatusComponent.less";
 interface Props {
   container: Explorer;
-  poolId: PoolIdType;
 }
-export const ConnectionStatus: React.FC<Props> = ({ container, poolId }: Props): JSX.Element => {
+export const ConnectionStatus: React.FC<Props> = ({ container }: Props): JSX.Element => {
   const connectionInfo = useNotebook((state) => state.connectionInfo);
   const [second, setSecond] = React.useState("00");
   const [minute, setMinute] = React.useState("00");
@@ -94,7 +93,7 @@ export const ConnectionStatus: React.FC<Props> = ({ container, poolId }: Props):
     (connectionInfo.status === ConnectionStatusType.Connect || connectionInfo.status === ConnectionStatusType.Reconnect)
   ) {
     return (
-      <ActionButton className="commandReactBtn" onClick={() => container.allocateContainer(poolId)}>
+      <ActionButton className="commandReactBtn" onClick={() => container.allocateContainer()}>
         <TooltipHost content={toolTipContent}>
           <Stack className="connectionStatusContainer" horizontal>
             <Icon iconName="ConnectVirtualMachine" className="connectIcon" />
@@ -134,9 +133,7 @@ export const ConnectionStatus: React.FC<Props> = ({ container, poolId }: Props):
           id={buttonId}
           className={connectionInfo.status === ConnectionStatusType.Failed ? "commandReactBtn" : "connectedReactBtn"}
           onClick={(e: React.MouseEvent<HTMLSpanElement>) =>
-            connectionInfo.status === ConnectionStatusType.Failed
-              ? container.allocateContainer(poolId)
-              : e.preventDefault()
+            connectionInfo.status === ConnectionStatusType.Failed ? container.allocateContainer() : e.preventDefault()
           }
         >
           <Stack className="connectionStatusContainer" horizontal>