feat: add system_core_principles table [D109] Layer 1 DB OS kernel

persona-brain-db/schema/06-system-core-principles.sql

@@ -0,0 +1,27 @@
+-- ============================================================
+-- 表6：system_core_principles（Layer 1 · 核心原则表·版本化）
+-- 用途：数据库OS内核级核心原则，在init时创建并填充
+-- 商业模型连接数据库时，这套底层思维已经内嵌进去了
+-- ============================================================
+
+CREATE TABLE IF NOT EXISTS system_core_principles (
+  principle_id      VARCHAR(32)   PRIMARY KEY,
+  layer             VARCHAR(16)   NOT NULL
+                    CHECK (layer IN ('bingshuo', 'zhuyuan', 'hololake')),
+  category          VARCHAR(32)   NOT NULL
+                    CHECK (category IN (
+                      'core_principle', 'thinking_pattern', 'tech_creed',
+                      'communication_style', 'security_rule', 'development_spec'
+                    )),
+  content           TEXT          NOT NULL,
+  version           VARCHAR(16)   NOT NULL,
+  status            VARCHAR(16)   NOT NULL DEFAULT 'active'
+                    CHECK (status IN ('active', 'deprecated', 'superseded')),
+  superseded_by     VARCHAR(32)   REFERENCES system_core_principles(principle_id),
+  source            TEXT,
+  created_at        TIMESTAMP     NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_scp_layer ON system_core_principles(layer);
+CREATE INDEX IF NOT EXISTS idx_scp_category ON system_core_principles(category);
+CREATE INDEX IF NOT EXISTS idx_scp_version ON system_core_principles(version);