feat: Enable DB-Agnostic metadata filtering in vectorstores

.github/workflows/schedule_reporter.yml

@@ -20,6 +20,10 @@ on:
 
 jobs:
   run_reporter:
-    uses: googleapis/langchain-google-alloydb-pg-python/.github/workflows/cloud_build_failure_reporter.yml@main
+    permissions:
+      issues: 'write'
+      checks: 'read'
+      contents: 'read'
+    uses: googleapis/langchain-google-alloydb-pg-python/.github/workflows/cloud_build_failure_reporter.yml@074f9932a8099256ff210771473badbd2156713b
     with:
       trigger_names: "pg-integration-test-nightly,pg-continuous-test-on-merge"

.kokoro/requirements.txt

@@ -276,9 +276,9 @@ jeepney==0.8.0 \
     # via
     #   keyring
     #   secretstorage
-jinja2==3.1.5 \
-    --hash=sha256:8fefff8dc3034e27bb80d67c671eb8a9bc424c0ef4c0826edbff304cceff43bb \
-    --hash=sha256:aba0f4dc9ed8013c424088f68a5c226f7d6097ed89b246d7749c2ec4175c6adb
+jinja2==3.1.6 \
+    --hash=sha256:0137fb05990d35f1275a587e9aee6d56da821fc83491a0fb838183be43f66d6d \
+    --hash=sha256:85ece4451f492d0c13c5dd7c13a64681a86afae63a5f347908daf103ce6d2f67
     # via gcp-releasetool
 keyring==24.3.1 \
     --hash=sha256:c3327b6ffafc0e8befbdb597cacdb4928ffe5c1212f7645f186e6d9957a898db \

README.rst

@@ -158,6 +158,22 @@ See the full `Chat Message History`_ tutorial.
 
 .. _`Chat Message History`: https://github.com/googleapis/langchain-google-cloud-sql-pg-python/tree/main/docs/chat_message_history.ipynb
 
+Langgraph Checkpoint Usage
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Use ``PostgresSaver`` to save snapshots of the graph state at a given point in time.
+
+.. code:: python
+
+   from langchain_google_cloud_sql_pg import PostgresSaver, PostgresEngine
+
+   engine = PostgresEngine.from_instance("project-id", "region", "my-instance", "my-database")
+   checkpoint = PostgresSaver.create_sync(engine)
+
+See the full `Checkpoint`_ tutorial.
+
+.. _`Checkpoint`: https://github.com/googleapis/langchain-google-cloud-sql-pg-python/tree/main/docs/langgraph_checkpointer.ipynb
+
 Contributions
 ~~~~~~~~~~~~~