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/live/international/README.md

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+# International Providers
+
+## Replicate — 1 usable key
+
+Key: `r8_08Ecnk1r9n4rRHEcnY1fvtQbyF7dtR21ALkDT`
+Source: https://github.com/avantika2195/AI-Assistant-virtually-impaired/blob/29f71c102c7dbd89092786ee7952c36945a230cd/.env
+
+### Endpoint
+```
+https://api.replicate.com/v1/models
+Authorization: Token <key>
+```
+
+### Usage
+```bash
+curl https://api.replicate.com/v1/models \
+  -H "Authorization: Token r8_08Ecnk1r9n4rRHEcnY1fvtQbyF7dtR21ALkDT"
+```

tools/scripts/llm-key-hunter/results/live/international/replicate.txt

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+Replicate|r8_08Ecnk1r9n4rRHEcnY1fvtQbyF7dtR21ALkDT|https://github.com/avantika2195/AI-Assistant-virtually-impaired/blob/29f71c102c7dbd89092786ee7952c36945a230cd/.env|Replicate API token