diff --git a/AGENTS.md b/AGENTS.md
index f832d3f..fa93303 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -466,7 +466,7 @@ secrets --db-url "postgres://..." search -n refining
 - 新增 `kind` 类型时：只需在 `add` 调用时传入，无需改代码
 - 字段命名：CLI 短标志 `-n`=namespace，`-m`=meta，`-s`=secret，`-q`=query，`-v`=verbose，`-f`=field，`-o`=output
 - 日志：用户可见输出用 `println!`；调试/运维信息用 `tracing::debug!`/`info!`/`warn!`/`error!`
-- 审计：`add`/`update`/`delete` 成功后调用 `audit::log()`，写入 `audit_log` 表；失败只 warn 不中断
+- 审计：`add`/`update`/`delete` 成功后调用 `audit::log_tx`，写入 `audit_log` 表；失败只 warn 不中断
 - 加密：`encrypted` 列存储 AES-256-GCM 密文；`add`/`update`/`search`/`delete` 需主密钥（`secrets init` 后从 OS 钥匙串加载）
 - 输出：读命令通过 `OutputMode` 支持 text/json/json-compact/env；写命令 `add` 同样支持 `-o json`
 
diff --git a/Cargo.lock b/Cargo.lock
index 59493d8..3695563 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1836,7 +1836,7 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "secrets"
-version = "0.7.1"
+version = "0.7.2"
 dependencies = [
  "aes-gcm",
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index bab0834..200efec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "secrets"
-version = "0.7.1"
+version = "0.7.2"
 edition = "2024"
 
 [dependencies]
diff --git a/src/audit.rs b/src/audit.rs
index 620388b..3ee9c75 100644
--- a/src/audit.rs
+++ b/src/audit.rs
@@ -1,5 +1,5 @@
 use serde_json::Value;
-use sqlx::{PgPool, Postgres, Transaction};
+use sqlx::{Postgres, Transaction};
 
 /// Write an audit entry within an existing transaction.
 pub async fn log_tx(
@@ -30,35 +30,3 @@ pub async fn log_tx(
         tracing::debug!(action, namespace, kind, name, actor, "audit logged");
     }
 }
-
-/// Write an audit entry using the pool (fire-and-forget, non-fatal).
-/// Kept for future use or scenarios without an active transaction.
-#[allow(dead_code)]
-pub async fn log(
-    pool: &PgPool,
-    action: &str,
-    namespace: &str,
-    kind: &str,
-    name: &str,
-    detail: Value,
-) {
-    let actor = std::env::var("USER").unwrap_or_default();
-    let result: Result<_, sqlx::Error> = sqlx::query(
-        "INSERT INTO audit_log (action, namespace, kind, name, detail, actor) \
-         VALUES ($1, $2, $3, $4, $5, $6)",
-    )
-    .bind(action)
-    .bind(namespace)
-    .bind(kind)
-    .bind(name)
-    .bind(&detail)
-    .bind(&actor)
-    .execute(pool)
-    .await;
-
-    if let Err(e) = result {
-        tracing::warn!(error = %e, "failed to write audit log");
-    } else {
-        tracing::debug!(action, namespace, kind, name, actor, "audit logged");
-    }
-}
diff --git a/src/commands/rollback.rs b/src/commands/rollback.rs
index e984cb6..4d0d1d0 100644
--- a/src/commands/rollback.rs
+++ b/src/commands/rollback.rs
@@ -8,12 +8,6 @@ use crate::output::OutputMode;
 #[derive(FromRow)]
 struct HistoryRow {
     secret_id: Uuid,
-    #[allow(dead_code)]
-    namespace: String,
-    #[allow(dead_code)]
-    kind: String,
-    #[allow(dead_code)]
-    name: String,
     version: i64,
     action: String,
     tags: Vec<String>,
@@ -33,7 +27,7 @@ pub struct RollbackArgs<'a> {
 pub async fn run(pool: &PgPool, args: RollbackArgs<'_>, master_key: &[u8; 32]) -> Result<()> {
     let snap: Option<HistoryRow> = if let Some(ver) = args.to_version {
         sqlx::query_as(
-            "SELECT secret_id, namespace, kind, name, version, action, tags, metadata, encrypted \
+            "SELECT secret_id, version, action, tags, metadata, encrypted \
              FROM secrets_history \
              WHERE namespace = $1 AND kind = $2 AND name = $3 AND version = $4 \
              ORDER BY id DESC LIMIT 1",
@@ -46,7 +40,7 @@ pub async fn run(pool: &PgPool, args: RollbackArgs<'_>, master_key: &[u8; 32]) -
         .await?
     } else {
         sqlx::query_as(
-            "SELECT secret_id, namespace, kind, name, version, action, tags, metadata, encrypted \
+            "SELECT secret_id, version, action, tags, metadata, encrypted \
              FROM secrets_history \
              WHERE namespace = $1 AND kind = $2 AND name = $3 \
              ORDER BY id DESC LIMIT 1",
diff --git a/src/crypto.rs b/src/crypto.rs
index 5d41d8d..0eb4583 100644
--- a/src/crypto.rs
+++ b/src/crypto.rs
@@ -105,15 +105,6 @@ pub fn store_master_key(key: &[u8; 32]) -> Result<()> {
     Ok(())
 }
 
-/// Delete the Master Key from the OS Keychain (used by tests / reset).
-#[cfg(test)]
-pub fn delete_master_key() -> Result<()> {
-    let entry =
-        keyring::Entry::new(KEYRING_SERVICE, KEYRING_USER).context("create keychain entry")?;
-    let _ = entry.delete_credential();
-    Ok(())
-}
-
 // ─── Minimal hex helpers (avoid extra dep) ────────────────────────────────────
 
 mod hex {