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/music-api.md

@@ -0,0 +1,57 @@
+# MiniMax Music Generation API (music-2.5)
+
+Source: https://platform.minimaxi.com/docs/api-reference/music-generation
+
+## Endpoint
+
+`POST https://api.minimaxi.com/v1/music_generation`
+
+## Auth
+
+`Authorization: Bearer <MINIMAX_API_KEY>`
+
+## Request (JSON)
+
+Required:
+- `model`: string — `music-2.5`
+- `lyrics`: string (1–3500 chars) — required. Use `\n` for line breaks. Structure tags: `[Verse]`, `[Chorus]`, `[Bridge]`, `[Intro]`, `[Outro]`, etc.
+
+Optional:
+- `prompt`: string (0–2000 chars) — style description, optional but recommended.
+- `lyrics_optimizer`: boolean — auto-generate lyrics from prompt when lyrics is empty.
+- `stream`: boolean (default `false`)
+- `output_format`: `hex` (default) or `url`. URL valid for 24 hours.
+- `aigc_watermark`: boolean — top-level field, non-streaming only.
+- `audio_setting`:
+  - `sample_rate`: 16000, 24000, 32000, 44100
+  - `bitrate`: 32000, 64000, 128000, 256000
+  - `format`: mp3, wav, pcm
+
+## Example
+
+```json
+{
+  "model": "music-2.5",
+  "prompt": "indie folk, melancholic, introspective",
+  "lyrics": "[verse]\n...\n[chorus]\n...",
+  "aigc_watermark": false,
+  "audio_setting": {
+    "sample_rate": 44100,
+    "bitrate": 256000,
+    "format": "mp3"
+  }
+}
+```
+
+## Response
+
+- `data.audio`: hex string or URL depending on `output_format`
+- `data.status`: 1 (generating), 2 (complete)
+- `extra_info`: duration, sample_rate, channels, bitrate, size
+- `base_resp.status_code`: 0 on success
+
+## Notes
+
+- `music-2.5` does not support `is_instrumental`. For instrumental music, use lyrics `[intro] [outro]` and add `pure music, no lyrics` to the prompt.
+- `prompt` is optional but recommended for better style control.
+- `stream=true` only supports `hex` output.