fix: remove dead ExportEpubPayload + wire profile buttons to MCP pre-focus

Adversarial-review fixes (fix-then-ship):
- Delete unused ExportEpubPayload interface (dead duplicate of
  ExportPayload) and its now-unused import in bridge.ts.
- Add data-format={notion-html,slack-html,email-html} to the three
  export-profile buttons so the dialog's MCP auto-focus effect can
  target them.
- Extend uiStore exportFormat union to ExportFormatHint (core formats +
  ExportProfileId) so profile pre-selection is type-representable.

Whole-repo green: tsc --noEmit clean, vite build ok, 2512/2512 tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: masonwyatt23

src/components/export/ExportDialog.tsx

@@ -350,6 +350,7 @@ export function ExportDialog() {
           <button
             type="button"
             className="export-format-btn"
+            data-format="notion-html"
             disabled={busy}
             onClick={() => run("Notion HTML", () => exportWithProfile("notion-html", title))}
           >
@@ -367,6 +368,7 @@ export function ExportDialog() {
           <button
             type="button"
             className="export-format-btn"
+            data-format="slack-html"
             disabled={busy}
             onClick={() => run("Slack (.txt)", () => exportWithProfile("slack-html", title))}
           >
@@ -384,6 +386,7 @@ export function ExportDialog() {
           <button
             type="button"
             className="export-format-btn"
+            data-format="email-html"
             disabled={busy}
             onClick={() => run("Email HTML", () => exportWithProfile("email-html", title))}
           >

src/mcp/bridge.ts

@@ -94,7 +94,6 @@ export type {
   BatchExportProfileResult,
   BatchReadFileResult,
   BatchEditOpResult,
-  ExportEpubPayload,
   StreamEditPayload,
   StreamEditApplyPayload,
   StreamEditCandidateResult,

src/mcp/handlers/types.ts

@@ -60,11 +60,6 @@ export interface ExportPayload {
   outputPath?: string | null;
 }
 
-export interface ExportEpubPayload {
-  format: "epub";
-  outputPath?: string | null;
-}
-
 export interface MarkdownArchivePayload {
   outputPath?: string | null;
   includeAssets?: boolean;

src/store/uiStore.ts

@@ -1,11 +1,19 @@
 import { create } from "zustand";
 import type { DocType } from "../lib/docClassifier";
+import type { ExportProfileId } from "../lib/exportTemplates";
+
+/**
+ * Format hint the export dialog can pre-focus on. Covers the four core
+ * formats plus every export-profile id, so an MCP request (or command) that
+ * targets a profile button (e.g. "notion-html") pre-selects it too.
+ */
+export type ExportFormatHint = "pdf" | "docx" | "html" | "epub" | ExportProfileId;
 
 interface UiState {
   exportOpen: boolean;
   /** Format hint set by an MCP export request so the dialog pre-selects it. */
-  exportFormat: "pdf" | "docx" | "html" | "epub" | null;
-  openExport: (format?: "pdf" | "docx" | "html" | "epub" | null) => void;
+  exportFormat: ExportFormatHint | null;
+  openExport: (format?: ExportFormatHint | null) => void;
   closeExport: () => void;
   settingsOpen: boolean;
   openSettings: () => void;
@@ -61,7 +69,7 @@ interface UiState {
 export const useUiStore = create<UiState>((set) => ({
   exportOpen: false,
   exportFormat: null,
-  openExport: (format?: "pdf" | "docx" | "html" | "epub" | null) =>
+  openExport: (format?: ExportFormatHint | null) =>
     set({ exportOpen: true, exportFormat: format ?? null }),
   closeExport: () => set({ exportOpen: false, exportFormat: null }),
   settingsOpen: false,