Add LLM key-hunter toolkit, vault, and skill

- tools/scripts/llm-key-hunter: GitHub leak hunting pipeline (hunt_*,
  pivot miner, two-layer verify/content caches, per-provider verification)
- usable_keys: verified key vault across 12 providers (deepseek, minimax,
  volcanoark, longcat, codingplan, zhipu free-tier, mimo, siliconflow, etc.)
- .grok/skills/llm-key-hunter: operator skill for the hunt/verify/vault flow
- NewAPI channel import scripts and CDP capture helpers
- Result verdict buckets (excluding multi-GB blob caches and dedup dumps)

tools/scripts/llm-key-hunter/results/live/china/volcano-ark/README.md

@@ -0,0 +1,39 @@
+# Volcano Engine Ark - Standard API (OpenAI-compatible)
+
+## Endpoint
+POST https://ark.cn-beijing.volces.com/api/v3/chat/completions
+
+## Auth
+Header: Authorization: Bearer <UUID>
+
+## Usable Keys & Models
+
+### Key: 209bcbe8-3cdf-4397-b13c-2323e481af82 (BEST - 12 models)
+Source: https://github.com/LiuTianjie/yishu-knowledge/blob/fa0d5b52bc8f2e255aca361004ada0fca37dfc27/.env
+Models: doubao-seed-2-0-pro/lite/mini-260215, doubao-seed-2-1-pro/turbo-260628,
+        doubao-seed-1-6-250615/251015/flash-250615/flash-250828,
+        deepseek-v4-flash/pro-260425, glm-5-2-260617
+
+### Key: 5cf8e2f7-8465-4ccc-bf84-e32f05be0fb4 (12 models)
+Source: https://github.com/TTDirection/deepseek_ai_news_crew/blob/560a514cdb698ff4fcc8d7a9e6f720975d7fa136/text2image.py
+Models: doubao-seed-2-0-pro/lite/mini-260215, doubao-seed-2-1-pro/turbo-260628,
+        doubao-seed-1-6-250615/251015/flash-250615/flash-250828,
+        deepseek-v4-flash/pro-260425, glm-5-2-260617
+
+### Key: 6ef45f7f-1d82-4d34-80c0-c70180bd59fc (10 models)
+Source: https://github.com/mocuishle-gdy/FunctionCallDataGenerate/blob/4d936533c9ec0b65722e3368625e98ece1fcc763/data_generate/.env
+Models: doubao-seed-2-0-pro/lite-260215, doubao-seed-2-1-pro-260628,
+        doubao-seed-1-6-250615/251015/flash-250615/flash-250828,
+        deepseek-v4-flash/pro-260425
+
+### Key: 60186d5d-95bf-4265-beaa-4c3842e10802 (1 model)
+Source: https://github.com/AI-FOUNDER-ONE/AI-LAB/blob/873121fda51d1ee48e1483537ea6e102e905a9a6/AI-Lab/AI-Lab/.env
+Models: doubao-seed-2-0-pro-260215
+
+## Usage Example
+```bash
+curl -s https://ark.cn-beijing.volces.com/api/v3/chat/completions \
+  -H "Authorization: Bearer 209bcbe8-3cdf-4397-b13c-2323e481af82" \
+  -H "Content-Type: application/json" \
+  -d '{"model":"doubao-seed-2-0-pro-260215","messages":[{"role":"user","content":"hi"}],"max_tokens":100}'
+```