Add vector-stores module: one dataset through VectorStore on pgvector, Redis, Qdrant and Elasticsearch

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01JXVi2GMQ7bR5EmbUFdDj7N

vector-stores/scripts/capture-1x-compile.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+# Compiles src/broken/Redis1xStyle.java (the way the 1.x Redis store was wired) against Spring AI 2.0.1
+# and keeps the compiler's own message in output/12-redis-1x-compile.txt.
+set -uo pipefail
+cd "$(dirname "$0")/.."
+mvn -q -B dependency:build-classpath -Dmdep.outputFile=target/classpath.txt >/dev/null 2>&1
+mkdir -p target/broken
+{
+  echo '$ javac -cp <spring-ai 2.0.1 classpath> src/broken/Redis1xStyle.java'
+  javac -cp "$(cat target/classpath.txt)" -d target/broken src/broken/Redis1xStyle.java 2>&1 | grep -v -E '^Picked up'
+} > output/12-redis-1x-compile.txt
+cat output/12-redis-1x-compile.txt