Update skills: add website-creator, mql-developer, ecommerce-astro

Changes:
- Add FAL_KEY and GEMINI_API_KEY to .env.example
- Update picture-it to use ~/.config/opencode/.env (unified creds)
- Remove shodh-memory skill (no longer used)
- Remove alphaear-* skills (deprecated)
- Remove thai-frontend-dev skill (replaced by website-creator)
- Remove theme-factory skill
- Add mql-developer skill (MQL5 trading)
- Add ecommerce-astro skill (Astro e-commerce)
- Add website-creator skill (Next.js + Payload CMS)
- Update install script for new skills

skills/website-creator/seo-geo/SKILL.md

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+---
+name: seo-geo
+description: Optimize content for AI search systems (AI Overviews, ChatGPT, Perplexity). Use when improving GEO, AI citations, llms.txt readiness, crawler accessibility, and passage-level citability.
+---
+
+# GEO (Generative Engine Optimization)
+
+## When to Use
+
+- Improving visibility in AI Overviews, ChatGPT, Perplexity
+- Evaluating llms.txt readiness or AI crawler access
+- Questions about GEO, AI SEO, LLM visibility, AI citations
+
+## Key Statistics
+
+| Metric | Value |
+|--------|-------|
+| AI Overviews reach | 1.5 billion users/month |
+| AI-referred sessions growth | 527% (Jan-May 2025) |
+| ChatGPT weekly active users | 900 million |
+| Perplexity monthly queries | 500+ million |
+
+## Critical Insight: Brand Mentions > Backlinks
+
+Brand mentions correlate **3x more** with AI visibility than backlinks.
+
+| Signal | Correlation with AI Citations |
+|--------|------------------------------|
+| YouTube mentions | ~0.737 (strongest) |
+| Reddit mentions | High |
+| Wikipedia presence | High |
+| Domain Rating (backlinks) | ~0.266 (weak) |
+
+## GEO Criteria
+
+### 1. Citability Score (25%)
+- **Optimal passage: 134-167 words**
+- Self-contained answer blocks
+- Specific facts/statistics with sources
+- "X is..." or "X refers to..." patterns
+
+### 2. Structural Readability (20%)
+- Clean H1->H2->H3 hierarchy
+- Question-based headings
+- Short paragraphs (2-4 sentences)
+- Tables for comparative data
+- FAQ sections
+
+### 3. Multi-Modal Content (15%)
+- Text + relevant images
+- Video content
+- Infographics
+- Interactive elements (calculators, tools)
+
+### 4. Authority & Brand Signals (20%)
+- Author byline with credentials
+- Publication dates
+- Citations to primary sources
+- Wikipedia, Reddit, YouTube presence
+
+### 5. Technical Accessibility (20%)
+- **AI crawlers do NOT execute JavaScript** — SSR required
+- AI crawler access in robots.txt
+- llms.txt presence
+
+## AI Crawlers to Track
+
+| Crawler | Owner |
+|---------|-------|
+| GPTBot | OpenAI |
+| ClaudeBot | Anthropic |
+| PerplexityBot | Perplexity |
+| OAI-SearchBot | OpenAI |
+
+**Allow** GPTBot, ClaudeBot, PerplexityBot for AI visibility. **Block** CCBot if desired.
+
+## llms.txt
+
+New standard for AI crawler content guidance. Location: `/llms.txt` (root)
+
+```
+# Site Title
+> Brief description
+
+## Main sections
+- `Page -> https://example.com/page`: Description
+```
+
+## Output
+
+Generate `GEO-ANALYSIS.md`:
+1. GEO Readiness Score: XX/100
+2. Platform breakdown (Google AIO, ChatGPT, Perplexity)
+3. AI Crawler Access Status
+4. llms.txt Status
+5. Brand Mention Analysis
+6. Passage-Level Citability assessment
+7. SSR Check
+8. Top 5 Highest-Impact Changes
+9. Schema Recommendations
+10. Content Reformatting Suggestions
+
+## Quick Wins
+
+1. Add "What is [topic]?" definition in first 60 words
+2. Create 134-167 word self-contained answer blocks
+3. Add question-based H2/H3 headings
+4. Include specific statistics with sources
+5. Add publication/update dates
+
+## DataForSEO Integration
+
+If available, use:
+- `ai_optimization_chat_gpt_scraper` — check ChatGPT results for queries
+- `ai_opt_llm_ment_search` — LLM mention tracking