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/source_files/fda2fd85097b.txt

@@ -0,0 +1,19 @@
+# OpenAI API配置
+OPENAI_API_KEY=your_openai_api_key
+# 默认使用智谱AI
+AI_API_TYPE=zhipu
+
+# 智谱AI API配置 
+ZHIPU_API_KEY=3e06da60c59f46cfac2ffc53b0e5393e.pl5nfQMNSVhyppY6
+
+# 如需使用其他大模型，取消注释并填写相应密钥
+# 文心一言API配置
+# AI_API_TYPE=ernie
+# ERNIE_API_KEY=your_ernie_api_key
+# ERNIE_SECRET_KEY=your_ernie_secret_key
+
+# 讯飞星火API配置
+# AI_API_TYPE=spark
+# SPARK_APP_ID=your_spark_app_id
+# SPARK_API_KEY=your_spark_api_key
+# SPARK_API_SECRET=your_spark_api_secret