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/usable_keys/kiro/keys.json

@@ -0,0 +1,18 @@
+[
+  {
+    "key": "aorAAAAAGq1c2UNqSL66V8livcTDvKMkwd87s_Zx7e9fWaGZ9cLudduGgBUhAS8tg517QoJ-Z6JIWjwjsyjb04cZcCkc0:MGQCMHIVfZj1X91EDI19gAYH/AG3UpcGYtXfyE4UFr4ZGL3G/bfiuaGkGU2HgfvJXntyXgIwYH26L8os5Fkv/oMKeKw0YzdRxq4COlCkH9x1P5GKP2hdxbZAnk6WW358ip8ht+K4",
+    "source": "https://github.com/vmelvagt25-eng/nutribox-smart-/blob/d22d6d4093d084f6415f6228ead70cf2815a99ea/kiro-auth-token.json",
+    "detail": "refresh 200 + chat 200 claude-haiku-4.5 (metered paid account)",
+    "type": "oauth_refresh_token",
+    "auth_method": "social",
+    "provider": "kiro",
+    "profile_arn": "arn:aws:codewhisperer:us-east-1:699475941385:profile/EHGA3GRVQMUK",
+    "refresh_url": "https://prod.us-east-1.auth.desktop.kiro.dev/refreshToken",
+    "chat_url": "https://q.us-east-1.amazonaws.com/generateAssistantResponse",
+    "models": [
+      "claude-sonnet-4.5",
+      "claude-haiku-4.5"
+    ],
+    "client_note": "use kiro_client.py; not OpenAI-compatible (AWS event-stream)"
+  }
+]