feat(08-02): add 25 GitHub dorks for infrastructure, emerging, enterprise categories

- infrastructure.yaml: 10 dorks covering Tier 5 gateways (OpenRouter,
  LiteLLM, Portkey, Helicone, Cloudflare AI, Vercel AI) and Tier 8
  self-hosted (Ollama, vLLM, LocalAI)
- emerging.yaml: 10 dorks covering Tier 4 Chinese providers (DeepSeek,
  Moonshot, Qwen, Zhipu, MiniMax) and Tier 6 vector DBs (Pinecone,
  Weaviate, Qdrant, Chroma) plus Writer.com
- enterprise.yaml: 5 dorks covering Tier 7 dev tools (Codeium, Tabnine)
  and Tier 9 enterprise (Databricks, Snowflake Cortex, IBM watsonx)
- Registry now loads 50 total GitHub dorks across all 5 categories,
  mirrored in both dorks/github/ and pkg/dorks/definitions/github/

pkg/dorks/definitions/github/emerging.yaml

@@ -0,0 +1,70 @@
+- id: deepseek-envfile
+  name: "DeepSeek API Key in .env files"
+  source: github
+  category: emerging
+  query: 'sk- extension:env "deepseek"'
+  description: "Finds DeepSeek API keys in .env files (sk- prefix near deepseek reference)"
+  tags: [deepseek, china, env, tier4]
+- id: moonshot-envfile
+  name: "Moonshot (Kimi) Key in .env files"
+  source: github
+  category: emerging
+  query: 'sk- extension:env "moonshot"'
+  description: "Finds Moonshot / Kimi API keys in .env files"
+  tags: [moonshot, kimi, china, env, tier4]
+- id: qwen-envfile
+  name: "Alibaba DashScope (Qwen) Key in .env files"
+  source: github
+  category: emerging
+  query: 'DASHSCOPE_API_KEY extension:env'
+  description: "Finds Alibaba Cloud DashScope (Qwen) keys in .env files"
+  tags: [qwen, alibaba, dashscope, china, env, tier4]
+- id: zhipu-envfile
+  name: "Zhipu GLM Key in .env files"
+  source: github
+  category: emerging
+  query: 'ZHIPU_API_KEY extension:env'
+  description: "Finds Zhipu GLM API keys in .env files"
+  tags: [zhipu, glm, china, env, tier4]
+- id: minimax-envfile
+  name: "MiniMax API Key in .env files"
+  source: github
+  category: emerging
+  query: 'MINIMAX_API_KEY extension:env'
+  description: "Finds MiniMax API keys in .env files"
+  tags: [minimax, china, env, tier4]
+- id: pinecone-envfile
+  name: "Pinecone API Key in .env files"
+  source: github
+  category: emerging
+  query: 'PINECONE_API_KEY extension:env'
+  description: "Finds Pinecone vector DB keys in .env files"
+  tags: [pinecone, vectordb, env, tier6]
+- id: weaviate-envfile
+  name: "Weaviate API Key in .env files"
+  source: github
+  category: emerging
+  query: 'WEAVIATE_API_KEY extension:env'
+  description: "Finds Weaviate vector DB keys in .env files"
+  tags: [weaviate, vectordb, env, tier6]
+- id: qdrant-envfile
+  name: "Qdrant API Key in .env files"
+  source: github
+  category: emerging
+  query: 'QDRANT_API_KEY extension:env'
+  description: "Finds Qdrant vector DB keys in .env files"
+  tags: [qdrant, vectordb, env, tier6]
+- id: chroma-envfile
+  name: "Chroma API Key in .env files"
+  source: github
+  category: emerging
+  query: 'CHROMA_API_KEY extension:env'
+  description: "Finds Chroma vector DB keys in .env files"
+  tags: [chroma, vectordb, env, tier6]
+- id: writer-envfile
+  name: "Writer.com API Key in .env files"
+  source: github
+  category: emerging
+  query: 'WRITER_API_KEY extension:env'
+  description: "Finds Writer.com platform keys in .env files"
+  tags: [writer, env, tier6]