chore(tui): align TUI copy with the CLI help descriptions

src/components/AbTestPicker.tsx

@@ -65,7 +65,7 @@ export function AbTestPicker({
       getValue={(row) => row.abTestId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading A/B tests…"
+      loadingMessage="loading A/B tests…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No A/B tests found in this Region."
       emptyPageMessage="No A/B tests on this page."

src/components/BatchEvaluationPicker.tsx

@@ -79,7 +79,7 @@ export function BatchEvaluationPicker({
       getValue={(row) => row.batchEvaluationId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading batch evaluations…"
+      loadingMessage="loading batch evaluations…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No batch evaluations found in this Region."
       emptyPageMessage="No batch evaluations on this page."

src/components/BatchInsightsPicker.tsx

@@ -70,7 +70,7 @@ export function BatchInsightsPicker({
       getValue={(row) => row.batchEvaluationId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading batch insights…"
+      loadingMessage="loading batch insights…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No batch insights found in this Region."
       emptyPageMessage="No batch insights on this page."

src/components/ConfigBundlePicker.tsx

@@ -71,7 +71,7 @@ export function ConfigBundlePicker({
       getValue={(row) => row.bundleId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading configuration bundles…"
+      loadingMessage="loading configuration bundles…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No configuration bundles found in this Region."
       emptyPageMessage="No configuration bundles on this page."

src/components/ConfigBundleVersionPicker.tsx

@@ -77,7 +77,7 @@ export function ConfigBundleVersionPicker({
       getValue={(row) => row.versionId}
       onSelect={onSelect}
       onBack={onBack}
-      loadingMessage="Loading configuration bundle versions…"
+      loadingMessage="loading configuration bundle versions…"
       errorMessage={(error) =>
         `Error loading versions for configuration bundle ${bundleId}: ${error.message}`
       }

src/components/ConfirmAction.tsx

@@ -143,7 +143,7 @@ export function ConfirmAction({
   return (
     <Layout breadcrumb={breadcrumb} description={description} keyHints={hints}>
       {isPending ? (
-        <Spinner label="Loading…" />
+        <Spinner label="loading…" />
       ) : error ? (
         <ErrorBody message={error.message} onBack={cancel} />
       ) : (

src/components/DatasetPicker.tsx

@@ -82,7 +82,7 @@ export function DatasetPicker({
       getValue={(row) => row.datasetId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading datasets…"
+      loadingMessage="loading datasets…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No datasets found in this Region."
       emptyPageMessage="No datasets on this page."

src/components/EndpointWizard.tsx

@@ -197,7 +197,7 @@ function hintsFor(
     { key: "ctl+c", label: "quit" },
   ];
   if (stepKey === "version") {
-    return [{ key: "↑↓", label: "choose" }, { key: "enter", label: "continue" }, ...base];
+    return [{ key: "↑↓", label: "navigate" }, { key: "enter", label: "continue" }, ...base];
   }
   if (stepKey === "review") return [{ key: "enter", label: verb }, ...base];
   return [{ key: "enter", label: "continue" }, ...base];

src/components/EvaluatorPicker.tsx

@@ -83,7 +83,7 @@ export function EvaluatorPicker({
       getValue={(row) => row.evaluatorId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading evaluators…"
+      loadingMessage="loading evaluators…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No evaluators found in this Region."
       emptyPageMessage="No evaluators on this page."

src/components/GatewayConnectorPicker.tsx

@@ -68,11 +68,11 @@ export function GatewayConnectorPicker({
       getValue={(row) => row.targetId}
       onSelect={onSelect}
       onBack={() => navigate(-1)}
-      loadingMessage={`Loading Connectors for Gateway ${gatewayId}…`}
+      loadingMessage={`loading Connectors for Gateway ${gatewayId}…`}
       errorMessage={(error) =>
         `Error loading Connectors for Gateway ${gatewayId}: ${error.message}`
       }
-      emptyMessage="This Gateway has no Connectors."
+      emptyMessage="This Gateway has no connectors."
       emptyPageMessage="No Connectors on this page."
     />
   );

src/components/GatewayPicker.tsx

@@ -74,7 +74,7 @@ export function GatewayPicker({
       getValue={(row) => row.gatewayId}
       onSelect={onSelect}
       onBack={onEscape ?? (() => navigate("/" + breadcrumb.slice(0, -1).join("/")))}
-      loadingMessage="Loading Gateways…"
+      loadingMessage="loading Gateways…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No Gateways found in this Region."
       emptyPageMessage="No Gateways on this page."

src/components/GatewayRulePicker.tsx

@@ -18,7 +18,7 @@ export const gatewayRuleColumns = [
   { key: "description", header: "description", flex: true },
   {
     key: "ruleId",
-    header: "id suffix",
+    header: "ID suffix",
     width: 10,
     render: (value: unknown) => String(value ?? "").slice(-8),
   },
@@ -68,7 +68,7 @@ export function GatewayRulePicker({
       getValue={(row) => row.ruleId}
       onSelect={onSelect}
       onBack={() => navigate(-1)}
-      loadingMessage={`Loading Rules for Gateway ${gatewayId}…`}
+      loadingMessage={`loading Rules for Gateway ${gatewayId}…`}
       errorMessage={(error) => `Error loading Rules for Gateway ${gatewayId}: ${error.message}`}
       emptyMessage="This Gateway has no Rules."
       emptyPageMessage={`No Rules on this page for Gateway ${gatewayId}.`}

src/components/GatewayTargetPicker.tsx

@@ -71,7 +71,7 @@ export function GatewayTargetPicker({
       getValue={(row) => row.targetId}
       onSelect={onSelect}
       onBack={() => navigate(-1)}
-      loadingMessage={`Loading Targets for Gateway ${gatewayId}…`}
+      loadingMessage={`loading Targets for Gateway ${gatewayId}…`}
       errorMessage={(error) => `Error loading Targets for Gateway ${gatewayId}: ${error.message}`}
       emptyMessage="This Gateway has no Targets."
       emptyPageMessage={`No Targets on this page for Gateway ${gatewayId}.`}

src/components/HarnessEndpointPicker.tsx

@@ -89,9 +89,9 @@ export function HarnessEndpointPicker({
       getValue={(row) => row.endpointName}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading endpoints…"
+      loadingMessage="loading endpoints…"
       errorMessage={(error) => `Error: ${error.message}`}
-      emptyMessage="This harness has no endpoints yet."
+      emptyMessage="This harness has no endpoints."
       emptyPageMessage={`No endpoints on this page for harness ${harnessId}.`}
     />
   );

src/components/HarnessPicker.tsx

@@ -86,9 +86,9 @@ export function HarnessPicker({
       getValue={(row) => row.harnessId}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading harnesses…"
+      loadingMessage="loading harnesses…"
       errorMessage={(error) => `Error: ${error.message}`}
-      emptyMessage="No harnesses found."
+      emptyMessage="No harnesses found in this Region."
       emptyPageMessage="No harnesses on this page."
     />
   );

src/components/HarnessVersionPicker.tsx

@@ -83,7 +83,7 @@ export function HarnessVersionPicker({
       getValue={(row) => row.harnessVersion}
       onSelect={onSelect}
       onBack={goBack}
-      loadingMessage="Loading versions…"
+      loadingMessage="loading versions…"
       errorMessage={(error) => `Error: ${error.message}`}
       emptyMessage="No versions found."
       emptyPageMessage={`No versions on this page for harness ${harnessId}.`}

src/components/HarnessWizard.tsx

@@ -238,6 +238,8 @@ type WizardPhase =
 export interface HarnessWizardProps extends ScreenProps {
   mode: "create" | "update";
   breadcrumb: string[];
+  // description is the optional subtitle shown after the breadcrumb.
+  description?: string;
   // harnessId is the update target (update mode only).
   harnessId?: string;
   // initial seeds the form (update mode: the current configuration).
@@ -257,6 +259,7 @@ export function HarnessWizard({
   core,
   mode,
   breadcrumb,
+  description,
   harnessId,
   initial,
   onDone,
@@ -336,7 +339,7 @@ export function HarnessWizard({
   const keyHints = hintsFor(stepKey, phase, verb);
 
   return (
-    <Layout breadcrumb={breadcrumb} keyHints={keyHints}>
+    <Layout breadcrumb={breadcrumb} description={description} keyHints={keyHints}>
       <Box flexDirection="column">
         <Box paddingX={1}>
           <Stepper
@@ -408,10 +411,10 @@ function hintsFor(
       return [{ key: "enter", label: "continue" }, ...base];
     case "model":
     case "memory":
-      return [{ key: "↑↓", label: "choose" }, { key: "enter", label: "continue" }, ...base];
+      return [{ key: "↑↓", label: "navigate" }, { key: "enter", label: "continue" }, ...base];
     case "tools":
       return [
-        { key: "↑↓", label: "move" },
+        { key: "↑↓", label: "navigate" },
         { key: "space", label: "toggle" },
         { key: "enter", label: "continue" },
         ...base,
@@ -569,89 +572,89 @@ const MODEL_PROVIDERS: {
   {
     kind: "bedrock",
     label: "bedrock",
-    description: "an amazon bedrock model",
+    description: "an Amazon Bedrock model or inference profile",
     fields: [
       {
         key: "modelId",
-        name: "model id",
-        helpText: "a bedrock model or inference profile id",
+        name: "model ID",
+        helpText: "a Bedrock model or inference profile ID",
         placeholder: "us.anthropic.claude-sonnet-4-6",
         required: true,
-        requiredError: "enter a bedrock model or inference profile id",
+        requiredError: "enter a Bedrock model or inference profile ID",
       },
     ],
   },
   {
     kind: "gemini",
     label: "gemini",
-    description: "a google gemini model",
+    description: "a Google Gemini model using an API-key credential ARN",
     fields: [
       {
         key: "modelId",
-        name: "model id",
-        helpText: "the gemini model to use",
+        name: "model ID",
+        helpText: "the Gemini model to use",
         placeholder: "gemini-2.5-pro",
         required: true,
-        requiredError: "enter a gemini model id",
+        requiredError: "enter a Gemini model ID",
       },
       {
         key: "apiKeyArn",
-        name: "api key arn",
-        helpText: "the arn of your gemini api key in agentcore identity",
+        name: "API key ARN",
+        helpText: "an AgentCore Identity API-key credential provider ARN",
         placeholder: "arn:aws:bedrock-agentcore:…:token-vault/…",
         required: true,
-        requiredError: "enter the arn of your gemini api key",
+        requiredError: "enter an API-key credential provider ARN",
       },
     ],
   },
   {
     kind: "openai",
     label: "openai",
-    description: "an openai model",
+    description: "an OpenAI model using an API-key credential ARN",
     fields: [
       {
         key: "modelId",
-        name: "model id",
-        helpText: "the openai model to use",
+        name: "model ID",
+        helpText: "the OpenAI model to use",
         placeholder: "gpt-5",
         required: true,
-        requiredError: "enter an openai model id",
+        requiredError: "enter an OpenAI model ID",
       },
       {
         key: "apiKeyArn",
-        name: "api key arn",
-        helpText: "the arn of your openai api key in agentcore identity",
+        name: "API key ARN",
+        helpText: "an AgentCore Identity API-key credential provider ARN",
         placeholder: "arn:aws:bedrock-agentcore:…:token-vault/…",
         required: true,
-        requiredError: "enter the arn of your openai api key",
+        requiredError: "enter an API-key credential provider ARN",
       },
     ],
   },
   {
     kind: "litellm",
     label: "litellm",
-    description: "any third-party provider via litellm",
+    description: "a third-party provider through LiteLLM",
     fields: [
       {
         key: "modelId",
-        name: "model id",
-        helpText: "the litellm model identifier (provider/model)",
+        name: "model ID",
+        helpText: "the LiteLLM model identifier (provider/model)",
         placeholder: "anthropic/claude-3-sonnet",
         required: true,
-        requiredError: "enter a litellm model identifier",
+        requiredError: "enter a LiteLLM model identifier",
       },
       {
         key: "apiKeyArn",
-        name: "api key arn",
-        helpText: "optional · the arn of the provider api key in agentcore identity",
+        name: "API key ARN",
+        helpText: "optional · an AgentCore Identity API-key credential provider ARN",
         placeholder: "arn:aws:bedrock-agentcore:…:token-vault/…",
         required: false,
         requiredError: "",
       },
       {
         key: "apiBase",
-        name: "api base url",
-        helpText: "optional · the base url of the provider's api endpoint",
+        name: "API base URL",
+        helpText: "optional · the provider API endpoint",
         placeholder: "https://…",
         required: false,
         requiredError: "",
@@ -791,12 +794,12 @@ const MEMORY_OPTIONS: { kind: MemoryKind; label: string; description: string }[]
   {
     kind: "managed",
     label: "managed",
-    description: "agentcore creates and manages memory for you (recommended)",
+    description: "AgentCore creates and manages memory for you (recommended)",
   },
   {
     kind: "byo",
     label: "bring your own",
-    description: "use an existing agentcore memory resource",
+    description: "use an existing AgentCore Memory",
   },
   { kind: "disabled", label: "disabled", description: "no memory across sessions" },
 ];
@@ -850,7 +853,7 @@ function MemoryStep({
     }
     if (key.return) {
       if (value.arn.trim() === "") {
-        setError("enter the arn of your agentcore memory resource");
+        setError("enter the ARN of an existing AgentCore Memory");
         return;
       }
       onNext();
@@ -867,8 +870,8 @@ function MemoryStep({
       />
       {value.kind === "byo" && (
         <FormTextInput
-          name="memory arn"
-          helpText="the arn of an existing agentcore memory resource"
+          name="Memory ARN"
+          helpText="the ARN of an existing AgentCore Memory"
           placeholder="arn:aws:bedrock-agentcore:…:memory/…"
           errorText=""
           value={value.arn}
@@ -901,26 +904,26 @@ const TOOL_ROWS: {
     placeholder: string;
   };
 }[] = [
-  { key: "browser", label: "browser", description: "browse the web with agentcore browser" },
+  { key: "browser", label: "browser", description: "browse the web with AgentCore Browser" },
   {
     key: "gateway",
     label: "gateway",
-    description: "call tools through an agentcore gateway",
+    description: "call tools through an AgentCore Gateway",
     field: {
       valueKey: "gatewayArn",
-      name: "gateway arn",
-      helpText: "the arn of the agentcore gateway to call tools through",
+      name: "Gateway ARN",
+      helpText: "the ARN of the AgentCore Gateway to call tools through",
       placeholder: "arn:aws:bedrock-agentcore:…:gateway/…",
     },
   },
   {
     key: "mcp",
-    label: "mcp server",
-    description: "connect to a remote mcp server",
+    label: "MCP server",
+    description: "connect to a remote MCP server",
     field: {
       valueKey: "mcpUrl",
-      name: "server url",
-      helpText: "the url of the remote mcp server",
+      name: "server URL",
+      helpText: "the URL of the remote MCP server",
       placeholder: "https://…",
     },
   },