feat: add audit_log_guanghu table [D109] Layer 3 guanghu internal operation audit

persona-brain-db/schema/14-audit-log-guanghu.sql

@@ -0,0 +1,22 @@
+-- ============================================================
+-- 表14：audit_log_guanghu（审计日志 · 光湖操作 · append-only）
+-- 用途：光湖系统内部操作审计，冰朔操作记录
+-- 与audit_log_national分开存储，用于双面灯塔审计分离
+-- ============================================================
+
+CREATE TABLE IF NOT EXISTS audit_log_guanghu (
+  log_id            INTEGER       PRIMARY KEY AUTOINCREMENT,
+  operation         VARCHAR(64)   NOT NULL,
+  actor_id          VARCHAR(32)   NOT NULL,        -- 人格体ID或冰朔标识
+  target_type       VARCHAR(32),
+  target_id         VARCHAR(64),
+  details           TEXT,                          -- JSON object
+  ip_address        VARCHAR(45),
+  result            VARCHAR(16)   NOT NULL
+                    CHECK (result IN ('success', 'failure', 'pending')),
+  checksum          VARCHAR(128),                   -- optional integrity check
+  timestamp         TIMESTAMP     NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_alg_actor ON audit_log_guanghu(actor_id);
+CREATE INDEX IF NOT EXISTS idx_alg_timestamp ON audit_log_guanghu(timestamp);