feat: ship v1.1.0 writer toolkit with templates, import, export, and inspiration capture

Implement chapter templates, txt/md/docx import, submission export presets, and global inspiration shortcut. Split import handlers into a separate main bundle and fix EditorLayout setTarget loop that broke E2E.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/shared/chapter-template.ts

@@ -0,0 +1,49 @@
+export interface TemplateContext {
+  chapterNumber: number
+  chapterTitle: string
+  penName: string
+  date: string
+  volumeName: string
+  previousChapterTitle: string
+  outlineItem: string
+  characterList: string
+}
+
+const VARS = [
+  'chapterNumber',
+  'chapterTitle',
+  'penName',
+  'date',
+  'volumeName',
+  'previousChapterTitle',
+  'outlineItem',
+  'characterList'
+] as const
+
+export function replaceChapterTemplate(body: string, ctx: TemplateContext): string {
+  let out = body
+  for (const key of VARS) {
+    out = out.split(`{${key}}`).join(String(ctx[key]))
+  }
+  return out
+}
+
+export function plainTextToEditorHtml(text: string): string {
+  const trimmed = text.trim()
+  if (!trimmed) return '<p></p>'
+  return trimmed
+    .split(/\n{2,}/)
+    .map((p) => `<p>${escapeHtml(p).replace(/\n/g, '<br>')}</p>`)
+    .join('')
+}
+
+function escapeHtml(text: string): string {
+  return text
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+}
+
+export function bodyPlainToChapterHtml(bodyPlain: string): string {
+  return plainTextToEditorHtml(bodyPlain)
+}