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-docx/scripts/docx_preview.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  echo "Usage: $(basename "$0") <file.docx>"
+  echo "Preview DOCX content as plain text."
+  exit 1
+}
+
+if [ $# -lt 1 ]; then
+  usage
+fi
+
+INPUT="$1"
+
+if [ ! -f "$INPUT" ]; then
+  echo "Error: File not found: $INPUT"
+  exit 1
+fi
+
+FILE_SIZE=$(du -h "$INPUT" | cut -f1)
+echo "=== DOCX Preview: $(basename "$INPUT") ==="
+echo "File size: $FILE_SIZE"
+
+if command -v pandoc &>/dev/null; then
+  CONTENT=$(pandoc -f docx -t plain "$INPUT" 2>/dev/null)
+  WORD_COUNT=$(echo "$CONTENT" | wc -w | tr -d ' ')
+  EST_PAGES=$(( (WORD_COUNT + 249) / 250 ))
+  echo "Word count: $WORD_COUNT"
+  echo "Estimated pages: $EST_PAGES"
+  echo "---"
+  echo "$CONTENT"
+else
+  echo "(pandoc not available, falling back to raw XML extract)"
+  echo "---"
+  unzip -p "$INPUT" word/document.xml 2>/dev/null | head -100
+fi