chore: init monorepo snapshot

LightRAG/requirements-offline-llm.txt

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+# LightRAG Offline Dependencies - LLM Providers
+# Install with: pip install -r requirements-offline-llm.txt
+# For offline installation:
+#   pip download -r requirements-offline-llm.txt -d ./packages
+#   pip install --no-index --find-links=./packages -r requirements-offline-llm.txt
+#
+# Recommended: Use pip install lightrag-hku[offline-llm] for the same effect
+# Or use constraints: pip install --constraint constraints-offline.txt -r requirements-offline-llm.txt
+
+# LLM provider dependencies (with version constraints matching pyproject.toml)
+aioboto3>=12.0.0,<16.0.0
+anthropic>=0.18.0,<1.0.0
+google-api-core>=2.0.0,<3.0.0
+google-genai>=1.0.0,<2.0.0
+llama-index>=0.9.0,<1.0.0
+ollama>=0.1.0,<1.0.0
+openai>=1.0.0,<3.0.0
+voyageai>=0.2.0,<1.0.0
+zhipuai>=2.0.0,<3.0.0