feat: Import 35+ skills, merge duplicates, add openclaw installer

Major updates:
- Added 35+ new skills from awesome-opencode-skills and antigravity repos
- Merged SEO skills into seo-master
- Merged architecture skills into architecture
- Merged security skills into security-auditor and security-coder
- Merged testing skills into testing-master and testing-patterns
- Merged pentesting skills into pentesting
- Renamed website-creator to thai-frontend-dev
- Replaced skill-creator with github version
- Removed Chutes references (use MiniMax API instead)
- Added install-openclaw-skills.sh for cross-platform installation
- Updated .env.example with MiniMax API credentials

skills/seo-master/SKILL.md

@@ -0,0 +1,165 @@
+---
+name: seo-master
+description: |
+  Master SEO skill combining audit, planning, technical SEO, schema markup,
+  content writing, fundamentals, and competitive analysis.
+  Use when: SEO audit, SEO strategy, content optimization, technical SEO, schema markup.
+---
+
+# SEO Master
+
+Comprehensive SEO skill combining: audit, planning, technical SEO, schema markup, content writing, fundamentals, and geo targeting.
+
+---
+
+## Quick Reference
+
+| Task | Use Section |
+|------|-------------|
+| Diagnose SEO issues | **SEO Audit** |
+| Build SEO strategy | **Strategic Planning** |
+| Fix technical issues | **Technical SEO** |
+| Add structured data | **Schema Markup** |
+| Write SEO content | **Content Writing** |
+| Learn SEO basics | **Fundamentals** |
+
+---
+
+## SEO Audit
+
+**When to Use:** Diagnosing SEO issues affecting crawlability, indexation, rankings.
+
+### Scope Gate (Ask First)
+1. **Business Context** - Site type, goals, target markets
+2. **SEO Focus** - Full site or specific sections?
+3. **Data Access** - GSC, Analytics, known issues?
+
+### Audit Framework (Priority Order)
+1. **Crawlability & Indexation** - Can search engines access and index the site?
+2. **Technical Foundations** - Speed, stability, accessibility
+3. **On-Page Optimization** - Each page optimized for intent?
+4. **Content Quality & E-E-A-T** - Does content deserve to rank?
+5. **Authority & Signals** - Trust and relevance demonstration
+
+---
+
+## Strategic Planning
+
+**When to Use:** Building SEO strategy for new or existing sites.
+
+### Process
+1. **Discovery** - Business type, audience, competitors, goals, KPIs
+2. **Competitive Analysis** - Top 5 competitors, content strategy, keyword gaps
+3. **Architecture Design** - URL hierarchy, content pillars, internal linking
+4. **Content Strategy** - Topic clusters, content calendar
+5. **Implementation Roadmap** - Phased approach with milestones
+
+---
+
+## Technical SEO
+
+**When to Use:** Technical SEO review for crawlability, performance, rendering.
+
+### Categories
+1. **Crawlability** - robots.txt, XML sitemap, noindex tags
+2. **Indexability** - Canonicals, hreflang, pagination
+3. **Performance** - Core Web Vitals (LCP < 2.5s, INP < 200ms, CLS < 0.1)
+4. **Mobile** - Responsive design, mobile-first indexing
+5. **Security** - HTTPS, mixed content
+6. **URLs** - Clean URLs, proper redirects
+7. **JavaScript** - Rendering issues, hydration
+
+---
+
+## Schema Markup
+
+**When to Use:** Detecting, validating, or generating Schema.org structured data.
+
+### Common Schema Types
+- `Organization` - Business info
+- `WebSite` - Site-level markup
+- `Article` - Blog posts, news
+- `Product` - E-commerce
+- `FAQPage` - FAQ content
+- `HowTo` - Step-by-step instructions
+- `LocalBusiness` - Local SEO
+- `BreadcrumbList` - Navigation
+- `VideoObject` - Video content
+- `ImageObject` - Images
+
+### Validation
+- Google Rich Results Test: https://search.google.com/test/rich-results
+- Schema.org Validator: https://validator.schema.org/
+
+---
+
+## Content Writing
+
+**When to Use:** Writing SEO-optimized content.
+
+### Best Practices
+1. **Keyword Research** - Primary + secondary keywords, search intent
+2. **Content Structure** - Clear headings (H1-H6), short paragraphs
+3. **E-E-A-T Signals** - Author expertise, citations, experience
+4. **Readability** - Flesch reading score, bullet points, images
+5. **Internal Linking** - Relevant internal links
+6. **Meta Tags** - Title tag (50-60 chars), meta description (150-160 chars)
+
+---
+
+## Fundamentals
+
+### E-E-A-T Framework
+| Dimension | What It Represents | Common Signals |
+|-----------|-------------------|----------------|
+| **Experience** | First-hand involvement | Original examples, demonstrations |
+| **Expertise** | Subject-matter competence | Credentials, depth, accuracy |
+| **Authoritativeness** | Recognition by others | Mentions, citations, links |
+| **Trustworthiness** | Reliability and safety | HTTPS, transparency, accuracy |
+
+### Core Web Vitals
+| Metric | Target | What It Reflects |
+|--------|--------|------------------|
+| **LCP** | < 2.5s | Loading performance |
+| **INP** | < 200ms | Interactivity |
+| **CLS** | < 0.1 | Visual stability |
+
+---
+
+## Geo Targeting
+
+**When to Use:** Multi-language or multi-regional SEO.
+
+### Key Elements
+- `hreflang` tags for language/region targeting
+- `geo.region` meta tag
+- LocalBusiness schema for local SEO
+- Country-specific domain vs. subdomain vs. subdirectory
+- Google Business Profile optimization
+
+---
+
+## DataForSEO Integration
+
+**When to Use:** Automated keyword research, competitor analysis, rank tracking.
+
+### Common API Endpoints
+- Keywords Data API - Search volume, difficulty, CPC
+- Keywords Research API - Related keywords, questions
+- Domain Analytics API - Traffic estimation, top pages
+- Backlinks API - Link analysis
+
+---
+
+## Implementation Checklist
+
+- [ ] robots.txt allows important resources
+- [ ] XML sitemap submitted to GSC
+- [ ] HTTPS enabled with valid certificate
+- [ ] Core Web Vitals passing
+- [ ] Mobile-friendly design
+- [ ] Clean URL structure
+- [ ] Schema markup validated
+- [ ] Content optimized for target keywords
+- [ ] Internal linking strategy implemented
+- [ ] GSC and Analytics configured