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/e52b795a8efb.txt

@@ -0,0 +1,22 @@
+# 服务器配置
+PORT=5001
+NODE_ENV=development
+
+# 数据库配置
+PGHOST=localhost
+PGUSER=postgres
+PGDATABASE=earthquakedata
+PGPASSWORD=postgres
+PGPORT=5432
+
+# 日志配置
+LOG_LEVEL=info
+
+# 模拟数据生成
+GENERATE_MOCK_DATA=true
+DATA_GENERATION_INTERVAL=1000
+AUTO_START_GENERATOR=false
+
+# 智谱AI配置
+ZHIPUAI_API_KEY=f79dd0503d84443f9b3d6cb233645f2d.Kzw8LK8O8UpHhFZw
+ZHIPUAI_AUTH_MODE=direct  # 可选值: apikey(X-Zhipu-Key认证), jwt(生成JWT), direct(直接作为Bearer认证)