feat(growth): ship search registration, long-tail SEO and in-app sharing

Register both Paca domains on Naver Search Advisor, Google Search Console and
Bing Webmaster Tools so the site can be indexed by every major engine, add
DASH and AES-128 how-to pages to capture protocol-specific searches, and let a
finished download share a UTM-tagged landing link from the completion shelf.
Package-manager manifests (winget, Chocolatey, Scoop) now carry verified
v1.2.0 hashes and product codes instead of placeholders. All 2,757 tests pass.

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4.1-flash

site/robots.txt

@@ -4,7 +4,15 @@
 User-agent: *
 Allow: /
 
-# OpenAI SearchGPT & ChatGPT Crawler
+# OpenAI SearchGPT (실시간 검색 인덱서)
+User-agent: OAI-SearchBot
+Allow: /
+
+# OpenAI ChatGPT 실시간 사용자 요청 크롤러
+User-agent: ChatGPT-User
+Allow: /
+
+# OpenAI 학습 크롤러
 User-agent: GPTBot
 Allow: /
 
@@ -21,6 +29,10 @@ Allow: /
 User-agent: Google-Extended
 Allow: /
 
+# Apple Intelligence / Applebot 확장
+User-agent: Applebot-Extended
+Allow: /
+
 # Microsoft Bing & Copilot
 User-agent: Bingbot
 Allow: /
@@ -32,5 +44,6 @@ Allow: /
 # AI 모델 및 LLM 인덱싱 표준 명세 (Answer.AI / Anthropic llms.txt 표준)
 # LLMs-Text: https://mediabrowser.chanpaca.net/llms.txt
 # LLMs-Full-Text: https://mediabrowser.chanpaca.net/llms-full.txt
+# RSS Feed (Naver Search Advisor): https://mediabrowser.chanpaca.net/feed.xml
 
 Sitemap: https://mediabrowser.chanpaca.net/sitemap.xml