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/infini-ai/README.md

@@ -0,0 +1,16 @@
+# InfiniAI (无问芯穹) — API Key 搜索结果
+
+## 平台信息
+- 页面: https://cloud.infini-ai.com/platform/ai
+- 文档: https://docs.infini-ai.com/gen-studio/api/tutorial.html
+- OpenAI 端点: `https://cloud.infini-ai.com/maas/v1/chat/completions`
+- Auth: `Authorization: Bearer <key>`
+
+## 搜索结果 (2026-07-27)
+
+### Key 1: sk-daaw... — ❌ Disabled by user
+- Key: `sk-daawztntl6afdjqn`
+- 端点: `https://cloud.infini-ai.com/maas/v1/chat/completions`
+- 状态: `APIKEY 已被用户禁用` (code 10018)
+- 来源: `dujh22/AutoLLM/MultiAgent/co_learner/.env`
+- 原始端点: `https://cloud.infini-ai.com/maas/qwen1.5-72b-chat/nvidia/`