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/4e27fb8490b6.txt

@@ -0,0 +1,4 @@
+# 配置你的 API Keys
+QWEN_API_KEY=sk-99cda0ecf3c844e79ebc66145cf09151
+DEEPSEEK_API_KEY=sk-26c711ce77cd4162912a783a3ad6355c
+GLM_API_KEY=ec48f7ca8edb45e083f9022e7ad641fb.ZvwxcUe4Za5Y28xl