Phase 1: Refactor all 16 element component interfaces to use MCP SDK types

Replace ad-hoc local type definitions in element components with real
MCP SDK types and Inspector wrapper types from core/mcp/types.ts:

Schema-typed primitives:
- LogLevelBadge: LogLevel → LoggingLevel (SDK)
- TransportBadge: "stdio"|"http" → ServerType (core), add sse/streamable-http
- TaskStatusBadge: local TaskStatus → SDK TaskStatus (working/input_required/...)
- ServerStatusIndicator: inline union → ConnectionStatus (core), "failed"→"error"

MCP wrapper consumers:
- AnnotationBadge: label+variant → facet+value with SDK Role type
- CapabilityItem: name:string → capability:keyof ServerCapabilities|ClientCapabilities
- LogEntry: flat props → entry:{receivedAt:Date, params:LoggingMessageNotification["params"]}
- MessageBubble: flat props → message:SamplingMessage|PromptMessage
- ProgressDisplay: flat props → params:ProgressNotification["params"]

Composite-input elements:
- ContentViewer: type+content+mimeType → block:ContentBlock (SDK discriminated union)
- InlineError: message+details → error:{message,data?}
- ConnectionToggle: checked+loading+onChange → status:ConnectionStatus+onConnect/onDisconnect

Also updates all group/screen/view consumers to keep the build green,
and renames CSS variable --inspector-status-failed → --inspector-status-error.

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

clients/web/src/components/groups/SamplingRequestPanel/SamplingRequestPanel.stories.tsx

@@ -23,20 +23,38 @@ type Story = StoryObj<typeof SamplingRequestPanel>;
 
 export const SimpleRequest: Story = {
   args: {
-    messages: [{ role: "user", content: "What is the capital of France?" }],
+    messages: [
+      {
+        role: "user",
+        content: {
+          type: "text",
+          text: "What is the capital of France?",
+        },
+      },
+    ],
   },
 };
 
 export const WithModelHints: Story = {
   args: {
-    messages: [{ role: "user", content: "Summarize this document for me." }],
+    messages: [
+      {
+        role: "user",
+        content: { type: "text", text: "Summarize this document for me." },
+      },
+    ],
     modelHints: ["claude-3-sonnet", "gpt-4"],
   },
 };
 
 export const WithPriorities: Story = {
   args: {
-    messages: [{ role: "user", content: "Translate this text to Spanish." }],
+    messages: [
+      {
+        role: "user",
+        content: { type: "text", text: "Translate this text to Spanish." },
+      },
+    ],
     modelHints: ["claude-3-sonnet"],
     costPriority: 0.3,
     speedPriority: 0.5,
@@ -47,8 +65,14 @@ export const WithPriorities: Story = {
 export const WithAllParams: Story = {
   args: {
     messages: [
-      { role: "user", content: "Write a haiku about programming." },
-      { role: "assistant", content: "Here is a haiku:" },
+      {
+        role: "user",
+        content: { type: "text", text: "Write a haiku about programming." },
+      },
+      {
+        role: "assistant",
+        content: { type: "text", text: "Here is a haiku:" },
+      },
     ],
     maxTokens: 1024,
     stopSequences: ["\n\n", "END"],
@@ -60,7 +84,13 @@ export const WithAllParams: Story = {
 export const WithTools: Story = {
   args: {
     messages: [
-      { role: "user", content: "Look up the weather in San Francisco." },
+      {
+        role: "user",
+        content: {
+          type: "text",
+          text: "Look up the weather in San Francisco.",
+        },
+      },
     ],
     tools: [
       {
@@ -92,7 +122,12 @@ export const WithTools: Story = {
 
 export const PrefilledResponse: Story = {
   args: {
-    messages: [{ role: "user", content: "What is 2 + 2?" }],
+    messages: [
+      {
+        role: "user",
+        content: { type: "text", text: "What is 2 + 2?" },
+      },
+    ],
     responseText: "The answer is 4.",
     modelUsed: "claude-3-haiku",
     stopReason: "end_turn",

clients/web/src/components/groups/SamplingRequestPanel/SamplingRequestPanel.tsx

@@ -11,14 +11,9 @@ import {
   Textarea,
   Title,
 } from "@mantine/core";
+import type { SamplingMessage } from "@modelcontextprotocol/sdk/types.js";
 import { MessageBubble } from "../../elements/MessageBubble/MessageBubble";
 
-export interface SamplingMessage {
-  role: string;
-  content: string;
-  imageContent?: { data: string; mimeType: string };
-}
-
 export interface SamplingTool {
   name: string;
   description?: string;
@@ -115,13 +110,7 @@ export function SamplingRequestPanel({
 
       <Title order={5}>Messages:</Title>
       {messages.map((message, index) => (
-        <MessageBubble
-          key={index}
-          index={index}
-          role={message.role as "user" | "assistant"}
-          content={message.content}
-          imageContent={message.imageContent}
-        />
+        <MessageBubble key={index} index={index} message={message} />
       ))}
 
       {modelHints && modelHints.length > 0 && (