WeKnora deployment source with the reviewed wiki identity, summary and recovery fixes

migrations/versioned/000026_chunks_query_indexes.up.sql

@@ -0,0 +1,18 @@
+-- ============================================================================
+-- Migration 000026: Add missing indexes for chunks query performance
+-- ============================================================================
+-- Covers grep_chunks tool queries that filter by (knowledge_base_id, tenant_id)
+-- and aggregate by (knowledge_id) with is_enabled/deleted_at filters.
+-- ============================================================================
+
+DO $$ BEGIN RAISE NOTICE '[Migration 000026] Adding chunks query indexes'; END $$;
+
+-- Index for main query: WHERE knowledge_base_id = ? AND tenant_id = ?
+-- Also benefits JOIN and OR conditions across multiple KB-tenant pairs
+CREATE INDEX IF NOT EXISTS idx_chunks_kb_tenant
+    ON chunks(knowledge_base_id, tenant_id);
+
+-- Index for count query: WHERE knowledge_id IN (...) AND is_enabled = true AND deleted_at IS NULL
+-- GROUP BY knowledge_id
+CREATE INDEX IF NOT EXISTS idx_chunks_knowledge_enabled
+    ON chunks(knowledge_id, is_enabled, deleted_at);