Feat/raae 1094 add svs vamana implementation (#404)

Adds SVS-VAMANA support to redis-vl-python, including
compression options.

**Highlights**
- New SVSVectorField + VectorIndexAlgorithm.SVS_VAMANA.
- Compression enums: LVQ4, LVQ4x4, LVQ4x8, LVQ8, LeanVec4x8, LeanVec8x8.
- Validation: only float16/float32; reduce < dims; reduce allowed only
with LeanVec.
- Capability checks (sync/async): block create if requirements not met;
clear RedisModuleVersionError.
- CompressionAdvisor: recommend configs + estimate memory savings.


**Requirements**
- Redis ≥ 8.2.0 and RediSearch ≥ 2.8.10 (or SearchLight ≥ 2.8.10) for
SVS-Vamana
- Backwards compatible, just can't use SVS-Vamana.

**Compatibility**
- No breaking changes for flat/hnsw.
- Backwards compatible, just can't use SVS-Vamana.

Docs & Tests
- Docs: schema.rst adds SVS section + example.
- Tests: validation, capability detection, CompressionAdvisor, and basic
integration.
- Notebook or python guide on usage

---------

Co-authored-by: Nitin Kanukolanu <[email protected]>

Author: nkanu17

Makefile

@@ -58,7 +58,14 @@ test-all: ## Run all tests including API tests
 
 test-notebooks: ## Run notebook tests
 	@echo "📓 Running notebook tests"
-	uv run python -m pytest --nbval-lax ./docs/user_guide -vvv $(ARGS)
+	@echo "🔍 Checking Redis version..."
+	@if uv run python -c "import redis; from redisvl.redis.connection import supports_svs; client = redis.Redis.from_url('redis://localhost:6379'); exit(0 if supports_svs(client) else 1)" 2>/dev/null; then \
+		echo "✅ Redis 8.2.0+ detected - running all notebooks"; \
+		uv run python -m pytest --nbval-lax ./docs/user_guide -vvv $(ARGS); \
+	else \
+		echo "⚠️ Redis < 8.2.0 detected - skipping SVS notebook"; \
+		uv run python -m pytest --nbval-lax ./docs/user_guide -vvv --ignore=./docs/user_guide/09_svs_vamana.ipynb $(ARGS); \
+	fi
 
 check: lint test ## Run all checks (lint + test)
 

docs/api/index.md

@@ -20,6 +20,7 @@ query
 filter
 vectorizer
 reranker
+utils
 cache
 message_history
 router