feat #565: add vector knowledge ingestion demo

sql/adb/28_agent_ords_vector_tag_vpd_setup.sql

@@ -18,6 +18,16 @@ SET FEEDBACK ON
 SET DEFINE OFF
 
 PROMPT === 1. Creating vector chunk and tag tables ===
+BEGIN
+  EXECUTE IMMEDIATE 'CREATE SEQUENCE cb_vector_chunk_seq START WITH 30000 INCREMENT BY 1 NOCACHE';
+EXCEPTION
+  WHEN OTHERS THEN
+    IF SQLCODE != -955 THEN
+      RAISE;
+    END IF;
+END;
+/
+
 BEGIN
   EXECUTE IMMEDIATE q'!
     CREATE TABLE cb_vector_document_chunk (
@@ -254,4 +264,5 @@ COMMIT;
 
 PROMPT === Vector/tag VPD setup complete ===
 PROMPT Next: run 29_agent_ords_vector_search_ords.sql as CB_ORDS.
+PROMPT Backoffice ingestion: /vector-knowledge (DEMO-4D or configured AI embeddings).
 EXIT;