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/ai_tools/copilot/all.txt

@@ -0,0 +1,2 @@
+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|https://github.com/Tanimou/promptopia/blob/bf7ee16912b7a913e316e8913df07000e709ac6e/.devcontainer/devcontainer.json|{"field": "regex"}
+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|https://github.com/spigelli/vscode-user-settings/blob/d47230f7720178a4a004b8980913eeb7fc28236c/settings.json|{"field": "regex"}

tools/scripts/llm-key-hunter/results/ai_tools/copilot/dead.txt

@@ -0,0 +1,2 @@
+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|https://github.com/Tanimou/promptopia/blob/bf7ee16912b7a913e316e8913df07000e709ac6e/.devcontainer/devcontainer.json|{"field": "regex"}|401 bad credentials
+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|https://github.com/spigelli/vscode-user-settings/blob/d47230f7720178a4a004b8980913eeb7fc28236c/settings.json|{"field": "regex"}|401 bad credentials