feat: replace OpenAI Reddit search with ScrapeCreators API

- New scripts/lib/reddit.py: multi-query expansion, global search,
  subreddit discovery, targeted subreddit search, comment enrichment
- 68 results in 17s vs ~15 results in 60-90s (OpenAI)
- Cost: ~$0.02/search vs $0.03-0.10 (15-50x cheaper)
- Real engagement data (score, comments, dates) from API
- No more 429 rate limits on comment enrichment
- Falls back to OpenAI if SCRAPECREATORS_API_KEY missing
- Registered as last30daysbeta for parallel local testing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

SKILL.md

@@ -1,10 +1,10 @@
 ---
-name: last30days
-version: "2.8"
-description: "Research a topic from the last 30 days. Also triggered by 'last30'. Sources: Reddit, X, YouTube, TikTok, Instagram, Hacker News, Polymarket, web. Become an expert and write copy-paste-ready prompts."
-argument-hint: 'last30 AI video tools, last30 best project management tools'
+name: last30daysbeta
+version: "2.9-beta"
+description: "BETA: Research a topic from the last 30 days with ScrapeCreators Reddit. Sources: Reddit, X, YouTube, TikTok, Instagram, Hacker News, Polymarket, web. Become an expert and write copy-paste-ready prompts."
+argument-hint: 'last30daysbeta AI video tools, last30daysbeta best project management tools'
 allowed-tools: Bash, Read, Write, AskUserQuestion, WebSearch
-homepage: https://github.com/mvanhorn/last30days-skill
+homepage: https://github.com/mvanhorn/last30days-skill-private
 user-invocable: true
 metadata:
   clawdbot: