feat(phase6): 자산 경로 구조 옵션(UI/미리보기/Export) + 폰트 preconnect 토글 + extras 자동 보강(robots/manifest) + 문서화

lib/exporter/extras.ts

@@ -17,7 +17,14 @@ function toBytes(s: string): Uint8Array {
 }
 
 function buildRobots(base?: string): string {
-  if (base && base.trim().length > 0) return base
+  if (base && base.trim().length > 0) {
+    const s = base.trim()
+    if (/^User-agent:/i.test(s)) return s
+    const lines = s.split(/\n+/).map((l) => l.trim()).filter((l) => l.length > 0)
+    if (lines.length === 0) return 'User-agent: *\n'
+    const disallowLines = lines.map((l) => (l.startsWith('Disallow:') ? l : `Disallow: ${l}`))
+    return `User-agent: *\n${disallowLines.join('\n')}`
+  }
   return 'User-agent: *\n'
 }
 
@@ -37,9 +44,18 @@ export function buildExtrasForPage(page: Page, overrides?: ExtrasOverrides): Rec
   const robotsText = buildRobots(overrides?.robotsText)
   out['robots.txt'] = toBytes(robotsText)
 
-  // site.webmanifest
+  // site.webmanifest (auto-enrich and safe-merge)
   const manifestBase = deriveManifest(page)
-  const manifestMerged = { ...manifestBase, ...(overrides?.manifest || {}) }
+  const ov = overrides?.manifest || {}
+  const name = ov.name && ov.name.trim().length > 0 ? ov.name : manifestBase.name
+  const short_name = ov.short_name && ov.short_name.trim().length > 0
+    ? ov.short_name
+    : (name.length > 12 ? name.slice(0, 12) : name)
+  const start_url = ov.start_url && ov.start_url.trim().length > 0 ? ov.start_url : manifestBase.start_url
+  const display = ov.display && ov.display.trim().length > 0 ? ov.display : manifestBase.display
+  const hexOk = ov.theme_color ? /^#([0-9a-fA-F]{3}){1,2}$/.test(ov.theme_color) : false
+  const theme_color = hexOk ? (ov.theme_color as string) : manifestBase.theme_color
+  const manifestMerged = { name, short_name, start_url, display, theme_color }
   const manifestJson = JSON.stringify(manifestMerged, null, 2)
   out['site.webmanifest'] = toBytes(manifestJson)