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/wiki-qa/SKILL.md

@@ -0,0 +1,39 @@
+---
+name: wiki-qa
+description: "Answer repository questions grounded entirely in source code evidence. Use when user asks a question about the codebase, user wants to understand a specific file, function, or component, or user asks \"how does X work\" or \"where is Y defined\"."
+risk: unknown
+source: community
+date_added: "2026-02-27"
+---
+
+# Wiki Q&A
+
+Answer repository questions grounded entirely in source code evidence.
+
+## When to Use
+- User asks a question about the codebase
+- User wants to understand a specific file, function, or component
+- User asks "how does X work" or "where is Y defined"
+
+## Procedure
+
+1. Detect the language of the question; respond in the same language
+2. Search the codebase for relevant files
+3. Read those files to gather evidence
+4. Synthesize an answer with inline citations
+
+## Response Format
+
+- Use `##` headings, code blocks with language tags, tables, bullet lists
+- Cite sources inline: `(src/path/file.ts:42)`
+- Include a "Key Files" table mapping files to their roles
+- If information is insufficient, say so and suggest files to examine
+
+## Rules
+
+- ONLY use information from actual source files
+- NEVER invent, guess, or use external knowledge
+- Think step by step before answering
+
+## When to Use
+This skill is applicable to execute the workflow or actions described in the overview.