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/minimax-multimodal-toolkit/references/video-prompt-guide.md

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+# Video Prompt Writing Guide
+
+## Prompt Structure
+
+### Basic Formula
+**Main subject + Scene/Space + Movement/Change**
+
+Examples:
+- "A puppy runs toward the camera in a sunny park"
+- "A woman walks in the rain holding an umbrella on a city street"
+- "A stream flows through a green valley with morning mist"
+
+### Professional Formula
+**Main subject + Scene + Movement + Camera motion + Aesthetic atmosphere**
+
+Examples:
+- "A couple sits on a park bench, warm golden hour lighting, [固定] framing, intimate and romantic atmosphere"
+- "A young man in a suit eats noodles at a street stall, [拉远] revealing the busy night market, warm tones, cinematic"
+- "A dancer performs contemporary dance in an empty studio, [跟随] smooth tracking, dramatic side lighting"
+
+---
+
+## Key Principles
+
+1. **More precise language → more accurate video**
+2. **Richer description → better generation quality**
+3. **Keep prompts focused on 5-6 seconds of action** — do not describe too many events
+4. **Combine shot types with mood descriptors** for professional output
+
+---
+
+## Camera Instructions Usage
+
+### Simultaneous Camera Movement
+Place multiple instructions in one bracket:
+- `[左摇,上升]` — pan left while rising
+- `[推进,下摇]` — push in while tilting down
+
+### Sequential Camera Movement
+Place instructions at different points in the prompt:
+- "The camera starts with [推进] toward the face, then [拉远] to reveal the full scene"
+
+---
+
+## Style-Specific Prompt Tips
+
+### Realistic / Cinematic Style
+- Mention lighting: "golden hour", "overcast sky", "dramatic side lighting"
+- Color grading: "warm tones", "cool desaturated palette", "high contrast"
+- Texture: "rain droplets on glass", "dust particles in sunlight"
+- Cinematic terms: "shallow depth of field", "anamorphic lens flare"
+
+### Animation Style
+- Substyle: "2D anime", "3D Pixar-style", "watercolor animation", "stop-motion"
+- Character design: "big expressive eyes", "chibi proportions"
+- Effects: "sparkle particles", "speed lines", "dramatic wind effects"
+
+### Product / Commercial Style
+- Product details: "smooth surface", "premium materials", "elegant design"
+- Studio lighting: "soft box lighting", "rim light", "gradient background"
+- Motion: "slow rotation", "smooth reveal", "gentle float"
+
+### Fantasy / Sci-Fi Style
+- World elements: "floating islands", "neon cyberpunk city", "enchanted forest"
+- VFX: "magic particles", "holographic displays", "energy beams"
+- Scale: "vast landscape", "towering structures", "infinite horizon"
+
+### Nature / Documentary Style
+- Terminology: "macro shot", "time-lapse", "wildlife behavior"
+- Phenomena: "morning dew", "sunset colors", "storm clouds"
+- Precision: "slow motion at 240fps", "underwater perspective"
+
+---
+
+## Image-to-Video Prompt Tips
+
+Focus on **movement and change** since the image establishes the visual:
+- Image of still lake → "Gentle ripples spread across the water surface, a breeze rustles the trees, [固定] fixed camera, peaceful"
+- Image of portrait → "The person slowly smiles and turns their head, natural blinking, [推进] subtle push in, warm lighting"
+
+---
+
+## Prompt Building Checklist
+
+1. **Subject**: Appearance, clothing, color, expression, posture
+2. **Action**: 1-2 key temporal actions ("first...then...")
+3. **Scene**: Setting with foreground + background + atmosphere
+4. **Camera**: `[运镜指令]` for precise control
+5. **Aesthetic**: Lighting, color, texture, cinematic quality
+
+## Common Mistakes
+
+1. Too many events for 6-second videos
+2. Conflicting camera instructions
+3. Vague descriptions
+4. Static descriptions without motion
+5. Missing aesthetic layer
+6. Overlong prompts (keep under 200 words)