feat(editor): integrate AI inline completions into main editor UI

Wire orphaned InlineCompletion component and InlineCompletionStatusIndicator
into the active application:

- Import and render <InlineCompletion> in CodeEditor.tsx alongside other
  editor widgets (after LightBulbWidget)
- Add InlineCompletionStatusIndicator to EnhancedStatusBar right section
- Export InlineCompletion from components/editor/index.ts
- Export InlineCompletionStatusIndicator, InlineCompletionToolbar, and
  InlineCompletionSettingsPanel from components/ai/index.ts

All existing tests pass (14/14 inline completion tests).
TypeScript typecheck and Vite build succeed with no errors.

Author: echobt

src/components/ai/index.ts

@@ -2,6 +2,7 @@
 export { ChatEditingMode, ChatEditingModeCompact, useChatEditingMode } from "./ChatEditingMode";
 export { ContextServerPanel, ContextServerSelector } from "./ContextServerPanel";
 export { CopilotStatusIndicator, CopilotSignInModal, CopilotSettingsPanel, useCopilotCompletions } from "./CopilotStatus";
+export { InlineCompletionStatusIndicator, InlineCompletionToolbar, InlineCompletionSettingsPanel } from "./InlineCompletionStatus";
 export { useEditPredictions, EditPredictionOverlay, PredictionStatusIndicator } from "./EditPredictions";
 export { InlineAssistant, InlineAssistantManager, useInlineAssistant } from "./InlineAssistant";
 export { LLMSelector, ModelChip } from "./LLMSelector";

src/components/cortex/EnhancedStatusBar.tsx

@@ -10,6 +10,7 @@ import { CortexBreadcrumb, type BreadcrumbSegment } from "./CortexBreadcrumb";
 import { useStatusBar, type StatusBarItemConfig } from "@/context/StatusBarContext";
 import { useDiagnostics } from "@/context/DiagnosticsContext";
 import { useWorkspaceTrust, useTrustStatus } from "@/context/WorkspaceTrustContext";
+import { InlineCompletionStatusIndicator } from "@/components/ai/InlineCompletionStatus";
 
 export interface EnhancedStatusBarProps {
   breadcrumbs?: BreadcrumbSegment[];
@@ -178,6 +179,8 @@ export const EnhancedStatusBar: Component<EnhancedStatusBarProps> = (props) => {
           )}
         </For>
 
+        <InlineCompletionStatusIndicator />
+
         <CortexTooltip content={`Line ${cursorPos().line}, Column ${cursorPos().column}`} position="top">
           <div style={itemStyle} onClick={handleCursorClick}>
             <span>Ln {cursorPos().line}, Col {cursorPos().column}</span>

src/components/editor/CodeEditor.tsx

@@ -42,6 +42,7 @@ import { loadStylesheet } from "@/utils/lazyStyles";
 loadStylesheet("editor");
 loadStylesheet("editor-features");
 import { LightBulbWidget } from "./LightBulbWidget";
+import { InlineCompletion } from "./InlineCompletion";
 import {
   updateCodeLensSettings,
   updateDebugHoverState,
@@ -832,6 +833,7 @@ export function CodeEditor(props: CodeEditorProps) {
         <ExceptionWidget lineHeight={20} editorTopOffset={0} onContinue={() => debug.continue_()} onConfigureBreakpoint={(exceptionId) => { editorLogger.debug("Configure breakpoint for exception:", exceptionId); }} />
       </Show>
       <LightBulbWidget editor={instance.editor()} monaco={instance.monaco()} uri={currentUri()} />
+      <InlineCompletion editor={instance.editor()} monaco={instance.monaco()} />
     </div>
   );
 }

src/components/editor/index.ts

@@ -160,3 +160,7 @@ export { EditorArea } from "./EditorArea";
 export type { EditorAreaProps } from "./EditorArea";
 export { WelcomeTab } from "./WelcomeTab";
 export type { WelcomeTabProps } from "./WelcomeTab";
+
+// Inline Completion (AI ghost text)
+export { InlineCompletion } from "./InlineCompletion";
+export type { InlineCompletionProps } from "./InlineCompletion";