feat(ECR-027): AICoreConfig KnowledgeChunk 只读并 Closed

KnowledgeChunk catalog (000028) · Loop continuous.

apps/api/migrations/000028_knowledge_chunks.up.sql

@@ -0,0 +1,19 @@
+-- ECR-027 KnowledgeChunk (read catalog)
+
+CREATE TABLE IF NOT EXISTS knowledge_chunks (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  code varchar(64) NOT NULL UNIQUE,
+  source_code varchar(64) NOT NULL,
+  title varchar(128) NOT NULL,
+  body text NOT NULL,
+  active boolean NOT NULL DEFAULT true,
+  system boolean NOT NULL DEFAULT false,
+  created_at timestamptz NOT NULL DEFAULT now(),
+  updated_at timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_knowledge_chunks_active ON knowledge_chunks(active);
+
+INSERT INTO knowledge_chunks(code, source_code, title, body, active, system)
+VALUES ('ask_grounding_intro', 'ask_grounding', '问答 grounding 引言块', '愈心谷提供陪伴式成长对话，非医疗诊断。', true, true)
+ON CONFLICT (code) DO NOTHING;