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/75e0b7ce1705.txt

@@ -0,0 +1,9 @@
+API_KEY=57bfeab4756d9c7547bdb6d3c4c2f6e9.dtj1s7vnpieiv1wu
+ZHIPUAI_API_KEY=57bfeab4756d9c7547bdb6d3c4c2f6e9.dtj1s7vnpieiv1wu
+DB_HOST=localhost
+DB_USER=sport_admin
+DB_PASSWORD=Aa@123456789
+DB_NAME=Squad_db
+SERVER_PORT=3000
+SERVER_HOST=121.37.195.13
+# SERVER_HOST=localhost