Fix immich-pg: use VectorChord with correct config

- Use cloudnative-vectorchord:17.7-1.0.0 image (not pgvecto.rs)
- Add shared_preload_libraries at postgresql level (not parameters)
- Create vector, vchord, cube, earthdistance extensions

Immich v1.133.0+ uses VectorChord as successor to pgvecto.rs.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

argocd/manifests/databases/README.md

@@ -115,8 +115,8 @@ PostgreSQL cluster for Immich with pgvecto.rs extension for AI-powered vector se
 
 - **Instances**: 1 (single-node for minikube)
 - **Storage**: 10Gi on `standard` storage class
-- **Image**: `ghcr.io/tensorchord/cloudnative-pgvecto.rs:17.5` (includes pgvecto.rs)
-- **Extensions**: `vectors`, `earthdistance`
+- **Image**: `ghcr.io/tensorchord/cloudnative-vectorchord:17.7-1.0.0` (includes VectorChord)
+- **Extensions**: `vector`, `vchord`, `cube`, `earthdistance`
 
 ### Connection
 

argocd/manifests/databases/immich-pg.yaml

@@ -1,5 +1,6 @@
 # PostgreSQL Cluster for Immich
-# Uses tensorchord/cloudnative-vectorchord for pgvecto.rs extension (required by Immich for AI features)
+# Uses VectorChord (successor to pgvecto.rs) for AI-powered vector search
+# See: https://github.com/immich-app/immich/discussions/9060
 # Managed by CloudNativePG operator
 apiVersion: postgresql.cnpg.io/v1
 kind: Cluster
@@ -8,9 +9,9 @@ metadata:
   namespace: databases
 spec:
   instances: 1
-  # cloudnative-pgvecto.rs image includes pgvecto.rs extension for vector similarity search
-  # See: https://github.com/tensorchord/cloudnative-pgvecto.rs
-  imageName: ghcr.io/tensorchord/cloudnative-pgvecto.rs:17.5
+  # VectorChord image for PostgreSQL 17
+  # See: https://github.com/tensorchord/VectorChord
+  imageName: ghcr.io/tensorchord/cloudnative-vectorchord:17.7-1.0.0
 
   storage:
     size: 10Gi
@@ -22,7 +23,10 @@ spec:
       database: immich
       owner: immich
       postInitSQL:
-        - CREATE EXTENSION IF NOT EXISTS vectors;
+        # Extensions required by Immich
+        - CREATE EXTENSION IF NOT EXISTS vector;
+        - CREATE EXTENSION IF NOT EXISTS vchord CASCADE;
+        - CREATE EXTENSION IF NOT EXISTS cube CASCADE;
         - CREATE EXTENSION IF NOT EXISTS earthdistance CASCADE;
 
   # Resource limits for minikube environment
@@ -36,11 +40,13 @@ spec:
 
   # PostgreSQL configuration
   postgresql:
+    # VectorChord requires vchord.so in shared_preload_libraries
+    shared_preload_libraries:
+      - "vchord.so"
     parameters:
       max_connections: "50"
       shared_buffers: "128MB"
       password_encryption: "scram-sha-256"
-      # Note: shared_preload_libraries is managed by the vectorchord image
     pg_hba:
       # Allow connections from k8s pods
       - host all all 0.0.0.0/0 scram-sha-256