feat(secrets-mcp): 增强 MCP 请求日志与 encryption_key 参数支持

logging.rs: - 每条 MCP POST 日志新增 auth_key（Bearer token 前12字符掩码）、 enc_key（X-Encryption-Key 前4后4字符指纹，如 146b…5516(64) 或 absent）、 user_id、tool_args（白名单非敏感参数摘要）字段 - 新增辅助函数 mask_bearer / mask_enc_key / extract_tool_args / summarize_value tools.rs: - extract_enc_key 成功路径增加 debug 级指纹日志（raw_len/trimmed_len/prefix/suffix） - 新增 extract_enc_key_or_arg / require_user_and_key_or_arg：优先使用参数传入的密钥， fallback 到 X-Encryption-Key 头，绕过 Cursor Chat MCP 头透传异常 - GetSecretInput / AddInput / UpdateInput / ExportInput / EnvMapInput 各增加可选 encryption_key 字段，对应工具实现改用 require_user_and_key_or_arg
release(secrets-mcp): 0.5.7
2026-04-06 11:03:01 +08:00 · 2026-04-05 17:07:31 +08:00 · 2026-04-05 17:06:53 +08:00 · 2026-04-05 15:29:03 +08:00 · 2026-04-05 12:27:40 +08:00 · 2026-04-05 12:14:40 +08:00
46 changed files with 4738 additions and 1506 deletions
--- a/.gitea/workflows/secrets.yml
+++ b/.gitea/workflows/secrets.yml
@@ -208,6 +208,7 @@ jobs:
          DEPLOY_HOST: ${{ vars.DEPLOY_HOST }}
          DEPLOY_USER: ${{ vars.DEPLOY_USER }}
          DEPLOY_SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
+          DEPLOY_KNOWN_HOSTS: ${{ vars.DEPLOY_KNOWN_HOSTS }}
        run: |
          if [ -z "$DEPLOY_HOST" ] || [ -z "$DEPLOY_USER" ] || [ -z "$DEPLOY_SSH_KEY" ]; then
            echo "部署跳过：请配置 vars.DEPLOY_HOST、vars.DEPLOY_USER 与 secrets.DEPLOY_SSH_KEY"
@@ -216,19 +217,26 @@ jobs:

          echo "$DEPLOY_SSH_KEY" > /tmp/deploy_key
          chmod 600 /tmp/deploy_key
+          trap 'rm -f /tmp/deploy_key' EXIT

-          scp -i /tmp/deploy_key -o StrictHostKeyChecking=no \
+          if [ -n "$DEPLOY_KNOWN_HOSTS" ]; then
+            echo "$DEPLOY_KNOWN_HOSTS" > /tmp/deploy_known_hosts
+            ssh_opts="-o UserKnownHostsFile=/tmp/deploy_known_hosts -o StrictHostKeyChecking=yes"
+          else
+            ssh_opts="-o StrictHostKeyChecking=accept-new"
+          fi
+
+          scp -i /tmp/deploy_key $ssh_opts \
            "/tmp/artifact/${MCP_BINARY}" \
            "${DEPLOY_USER}@${DEPLOY_HOST}:/tmp/secrets-mcp.new"

-          ssh -i /tmp/deploy_key -o StrictHostKeyChecking=no "${DEPLOY_USER}@${DEPLOY_HOST}" "
+          ssh -i /tmp/deploy_key $ssh_opts "${DEPLOY_USER}@${DEPLOY_HOST}" "
            sudo mv /tmp/secrets-mcp.new /opt/secrets-mcp/secrets-mcp
            sudo chmod +x /opt/secrets-mcp/secrets-mcp
            sudo systemctl restart secrets-mcp
            sleep 2
            sudo systemctl is-active secrets-mcp && echo '服务启动成功' || (sudo journalctl -u secrets-mcp -n 20 && exit 1)
          "
-          rm -f /tmp/deploy_key

      - name: 飞书通知
        if: always()
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,7 @@
 .env
 .DS_Store
 .cursor/
-# Google OAuth 下载的 JSON 凭据文件
-client_secret_*.apps.googleusercontent.com.json
 *.pem
-tmp/
+tmp/
+client_secret_*.apps.googleusercontent.com.json
+node_modules/
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -22,7 +22,6 @@
      "label": "test: workspace",
      "type": "shell",
      "command": "cargo test --workspace --locked",
-      "dependsOn": "build",
      "group": { "kind": "test", "isDefault": true }
    },
    {
@@ -35,7 +34,7 @@
      "label": "clippy: workspace",
      "type": "shell",
      "command": "cargo clippy --workspace --locked -- -D warnings",
-      "dependsOn": "build"
+      "problemMatcher": []
    },
    {
      "label": "ci: release-check",
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -2,12 +2,37 @@

 本仓库为 **MCP SaaS**：`secrets-core`（业务与持久化）+ `secrets-mcp`（Streamable HTTP MCP、Web、OAuth、API Key）。对外入口见 `crates/secrets-mcp`。

+## 版本控制
+
+本仓库使用 **[Jujutsu (jj)](https://jj-vcs.dev/)** 作为版本控制系统（纯 jj 模式，无 `.git` 目录）。
+
+### 常用 jj 命令对照
+
+| 操作 | jj 命令 |
+|------|---------|
+| 查看历史 | `jj log` / `jj log 'all()'` |
+| 查看状态 | `jj status` |
+| 新建提交 | `jj commit` |
+| 创建新变更 | `jj new` |
+| 变基 | `jj rebase` |
+| 合并提交 | `jj squash` |
+| 撤销操作 | `jj undo` |
+| 查看标签 | `jj tag list` |
+| 查看分支 | `jj bookmark list` |
+| 推送远端 | `jj git push` |
+| 拉取远端 | `jj git fetch` |
+
+### 注意事项
+- 本仓库为**纯 jj 模式**，无 `.git` 目录；本地不要使用 `git` 命令
+- CI/CD（Gitea Actions）仍通过 Git 协议拉取代码，Runner 侧自动使用 `git`，无需修改
+- 检查标签是否存在时使用 `jj log --no-graph --revisions "tag(${tag})"` 而非 `git rev-parse`
+
 ## 提交 / 推送硬规则（优先于下文）

 **每次提交和推送前必须执行以下检查，无论是否明确「发版」：**

 1. 涉及 `crates/**`、根目录 `Cargo.toml`/`Cargo.lock`、`secrets-mcp` 行为变更的提交，默认视为**需要发版**，除非明确说明「本次不发版」。
-2. 提交前检查 `crates/secrets-mcp/Cargo.toml` 的 `version`，再查 tag：`git tag -l 'secrets-mcp-*'`。若当前版本对应 tag 已存在且有代码变更，**必须 bump 版本号**并 `cargo build` 同步 `Cargo.lock`。
+2. 提交前检查 `crates/secrets-mcp/Cargo.toml` 的 `version`，再查 tag：`jj tag list`。若当前版本对应 tag 已存在且有代码变更，**必须 bump 版本号**并 `cargo build` 同步 `Cargo.lock`。
 3. 提交前运行 `./scripts/release-check.sh`（版本/tag + `fmt` + `clippy --locked` + `test --locked`）。若脚本不存在或不可用，至少运行 `cargo fmt -- --check && cargo clippy --locked -- -D warnings && cargo test --locked`。

 ## 项目结构
@@ -55,13 +80,24 @@ entries (
 ```sql
 secrets (
  id          UUID PRIMARY KEY DEFAULT uuidv7(),
-  entry_id    UUID         NOT NULL REFERENCES entries(id) ON DELETE CASCADE,
-  field_name  VARCHAR(256) NOT NULL,
+  user_id     UUID,
+  name        VARCHAR(256) NOT NULL,
+  type        VARCHAR(64)  NOT NULL DEFAULT 'text',
  encrypted   BYTEA        NOT NULL DEFAULT '\x',
  version     BIGINT       NOT NULL DEFAULT 1,
  created_at  TIMESTAMPTZ  NOT NULL DEFAULT NOW(),
-  updated_at  TIMESTAMPTZ  NOT NULL DEFAULT NOW(),
-  UNIQUE(entry_id, field_name)
+  updated_at  TIMESTAMPTZ  NOT NULL DEFAULT NOW()
+)
+-- 唯一：UNIQUE(user_id, name) WHERE user_id IS NOT NULL
+```
+
+```sql
+entry_secrets (
+  entry_id    UUID NOT NULL REFERENCES entries(id) ON DELETE CASCADE,
+  secret_id   UUID NOT NULL REFERENCES secrets(id) ON DELETE CASCADE,
+  sort_order  INT  NOT NULL DEFAULT 0,
+  created_at  TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  PRIMARY KEY(entry_id, secret_id)
 )
 ```

@@ -101,24 +137,29 @@ oauth_accounts (

 ### MCP 消歧（AI 调用）

-按 `name` 定位条目的工具（`get` / `update` / 单条 `delete` / `history` / `rollback`）：若该用户下仅一条匹配则直接执行；若多条（同 `name`、不同 `folder`）则返回错误并提示补全 `folder`。`secrets_delete` 的 `dry_run=true` 与真实删除使用相同消歧规则。
+按 `name` 定位条目的工具（`secrets_update` / `secrets_history` / `secrets_rollback` / `secrets_delete` 单条模式）：若该用户下仅一条匹配则直接执行；若多条（同 `name`、不同 `folder`）则返回错误并提示补全 `folder`。也可直接传 `id`（UUID）跳过消歧。
+
+注意：`secrets_get` 只接受 UUID `id`（来自 `secrets_find` 结果），不支持按 `name` 定位。

 ### 字段职责

 | 字段 | 含义 | 示例 |
 |------|------|------|
 | `folder` | 隔离空间（参与唯一键） | `refining` |
-| `type` | 软分类（不参与唯一键） | `server`, `service`, `key`, `person` |
+| `type` | 软分类（不参与唯一键，用户自定义） | `server`, `service`, `account`, `person`, `document` |
 | `name` | 标识名 | `gitea`, `aliyun` |
 | `notes` | 非敏感说明 | 自由文本 |
 | `tags` | 标签 | `["aliyun","prod"]` |
-| `metadata` | 明文描述 | `ip`、`url`、`key_ref` |
-| `secrets.field_name` | 加密字段名（明文） | `token`, `ssh_key` |
+| `metadata` | 明文描述 | `ip`、`url`、`subtype` |
+| `secrets.name` | 密钥名称（调用方提供） | `token`, `ssh_key`, `password` |
+| `secrets.type` | 密钥类型（调用方提供，默认 `text`） | `text`, `password`, `key` |
 | `secrets.encrypted` | 密文 | AES-GCM |

-### PEM 共享（`key_ref`）
+### 共享密钥（N:N 关联）

-建议将共享 PEM 存为 **`type=key`** 的 entry；其它记录在 `metadata.key_ref` 指向目标 entry 的 `name`（支持 `folder/name` 格式消歧）。删除被引用 key 时，服务会自动迁移为单副本 + 重定向（复制到首个引用方，其余引用方改指向新 owner）；解析逻辑见 `secrets_core::service::env_map`。
+多个 entry 可共享同一 secret 字段，通过 `entry_secrets` 中间表关联。
+添加条目时通过 `link_secret_names` 参数指定要关联的已有 secret name（按 `(user_id, name)` 精确匹配）。
+删除 entry 时仅解除关联，secret 本身若仍被引用则保留；不再被任何 entry 引用时自动清理。

 ## 代码规范

@@ -130,6 +171,14 @@ oauth_accounts (
 - 加密：密钥由用户密码短语通过 **PBKDF2-SHA256（600k 次）** 在客户端派生，服务端只存 `key_salt`/`key_check`/`key_params`，不持有原始密钥。Web 客户端在浏览器本地完成加解密；MCP 客户端通过 `X-Encryption-Key` 请求头传递密钥，服务端临时解密后返回明文。
 - MCP：tools 参数与 JSON Schema（`schemars`）保持同步，鉴权以请求扩展中的用户上下文为准。

+## 生产 CORS
+
+生产环境 CORS 使用显式请求头白名单（`build_cors_layer`），而非 `allow_headers(Any)`，
+因为 `tower-http` 禁止 `allow_credentials(true)` 与 `allow_headers(Any)` 同时使用。
+
+**维护约束**：若 MCP 协议或客户端新增自定义请求头，必须同步更新 `production_allowed_headers()`。
+当前允许的请求头：`Authorization`、`Content-Type`、`X-Encryption-Key`、`mcp-session-id`、`x-mcp-session`。
+
 ## 提交前检查

 ```bash
@@ -148,7 +197,7 @@ cargo test --locked

 ```bash
 grep '^version' crates/secrets-mcp/Cargo.toml
-git tag -l 'secrets-mcp-*'
+jj tag list
 ```

 ## CI/CD
@@ -166,9 +215,19 @@ git tag -l 'secrets-mcp-*'
 | 变量 | 说明 |
 |------|------|
 | `SECRETS_DATABASE_URL` | **必填**。PostgreSQL URL。 |
+| `SECRETS_DATABASE_SSL_MODE` | 可选但强烈建议生产必填。推荐 `verify-full`（至少 `verify-ca`）。 |
+| `SECRETS_DATABASE_SSL_ROOT_CERT` | 可选。私有 CA 或自签链路时指定 CA 根证书路径。 |
+| `SECRETS_DATABASE_POOL_SIZE` | 可选。连接池最大连接数，默认 `10`。 |
+| `SECRETS_DATABASE_ACQUIRE_TIMEOUT` | 可选。获取连接超时秒数，默认 `5`。 |
+| `SECRETS_ENV` | 可选。设为 `prod` / `production` 时会拒绝弱 PostgreSQL TLS 模式。 |
 | `BASE_URL` | 对外基址；OAuth 回调 `${BASE_URL}/auth/google/callback`。 |
 | `SECRETS_MCP_BIND` | 监听地址，默认 `127.0.0.1:9315`（容器/远程直接暴露时需改为 `0.0.0.0:9315`）。 |
 | `GOOGLE_CLIENT_ID` / `GOOGLE_CLIENT_SECRET` | 可选；仅运行时配置。 |
 | `RUST_LOG` | 如 `secrets_mcp=debug`。 |
+| `RATE_LIMIT_GLOBAL_PER_SECOND` | 可选。全局限流速率，默认 `100` req/s。 |
+| `RATE_LIMIT_GLOBAL_BURST` | 可选。全局限流突发量，默认 `200`。 |
+| `RATE_LIMIT_IP_PER_SECOND` | 可选。单 IP 限流速率，默认 `20` req/s。 |
+| `RATE_LIMIT_IP_BURST` | 可选。单 IP 限流突发量，默认 `40`。 |
+| `TRUST_PROXY` | 可选。设为 `1`/`true`/`yes` 时从 `X-Forwarded-For` / `X-Real-IP` 提取客户端 IP。 |

 > `SERVER_MASTER_KEY` 已不再需要。新架构下密钥由用户密码短语在客户端派生，服务端不持有。
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -0,0 +1,55 @@
+# Contributing
+
+## 版本控制
+
+本仓库使用 **[Jujutsu (jj)](https://jj-vcs.dev/)**。请勿使用 `git` 命令。
+
+```bash
+jj log          # 查看历史
+jj status       # 查看状态
+jj new          # 创建新变更
+jj commit       # 提交
+jj rebase       # 变基
+jj squash       # 合并提交
+jj git push     # 推送到远端
+```
+
+详见 [AGENTS.md](AGENTS.md) 的「版本控制」章节。
+
+## 本地开发
+
+```bash
+# 复制环境变量
+cp deploy/.env.example .env
+
+# 填写数据库连接等配置后
+cargo build
+cargo test --locked
+```
+
+## 提交前检查
+
+每次提交前必须通过：
+
+```bash
+cargo fmt -- --check
+cargo clippy --locked -- -D warnings
+cargo test --locked
+```
+
+或使用脚本：
+
+```bash
+./scripts/release-check.sh
+```
+
+## 发版规则
+
+涉及 `crates/**`、根目录 `Cargo.toml`/`Cargo.lock`、`secrets-mcp` 行为变更的提交，默认需要发版。
+
+1. 检查 `crates/secrets-mcp/Cargo.toml` 的 `version`
+2. 运行 `jj tag list` 确认对应 tag 是否已存在
+3. 若 tag 已存在且有代码变更，**必须 bump 版本**并 `cargo build` 同步 `Cargo.lock`
+4. 通过 release-check 后再提交
+
+详见 [AGENTS.md](AGENTS.md) 的「提交 / 推送硬规则」章节。
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -464,6 +464,20 @@ dependencies = [
 "syn",
 ]

+[[package]]
+name = "dashmap"
+version = "6.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5041cc499144891f3790297212f32a74fb938e5136a14943f338ef9e0ae276cf"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+ "hashbrown 0.14.5",
+ "lock_api",
+ "once_cell",
+ "parking_lot_core",
+]
+
 [[package]]
 name = "der"
 version = "0.7.10"
@@ -596,6 +610,12 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"

+[[package]]
+name = "foldhash"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77ce24cb58228fbb8aa041425bb1050850ac19177686ea6e0f41a70416f56fdb"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.2"
@@ -687,6 +707,12 @@ version = "0.3.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "037711b3d59c33004d3856fbdc83b99d4ff37a24768fa1be9ce3538a1cde4393"

+[[package]]
+name = "futures-timer"
+version = "3.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f288b0a4f20f9a56b5d1da57e2227c661b7b16168e2f72365f57b63326e29b24"
+
 [[package]]
 name = "futures-util"
 version = "0.3.32"
@@ -765,6 +791,35 @@ dependencies = [
 "polyval",
 ]

+[[package]]
+name = "governor"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9efcab3c1958580ff1f25a2a41be1668f7603d849bb63af523b208a3cc1223b8"
+dependencies = [
+ "cfg-if",
+ "dashmap",
+ "futures-sink",
+ "futures-timer",
+ "futures-util",
+ "getrandom 0.3.4",
+ "hashbrown 0.16.1",
+ "nonzero_ext",
+ "parking_lot",
+ "portable-atomic",
+ "quanta",
+ "rand 0.9.2",
+ "smallvec",
+ "spinning_top",
+ "web-time",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.14.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+
 [[package]]
 name = "hashbrown"
 version = "0.15.5"
@@ -773,7 +828,7 @@ checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
 "allocator-api2",
 "equivalent",
- "foldhash",
+ "foldhash 0.1.5",
 ]

 [[package]]
@@ -781,6 +836,11 @@ name = "hashbrown"
 version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+dependencies = [
+ "allocator-api2",
+ "equivalent",
+ "foldhash 0.2.0",
+]

 [[package]]
 name = "hashlink"
@@ -1283,6 +1343,12 @@ dependencies = [
 "windows-sys 0.61.2",
 ]

+[[package]]
+name = "nonzero_ext"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38bf9645c8b145698bb0b18a4637dcacbc421ea49bef2317e4fd8065a387cf21"
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.50.3"
@@ -1463,6 +1529,12 @@ dependencies = [
 "universal-hash",
 ]

+[[package]]
+name = "portable-atomic"
+version = "1.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c33a9471896f1c69cecef8d20cbe2f7accd12527ce60845ff44c153bb2a21b49"
+
 [[package]]
 name = "potential_utf"
 version = "0.1.4"
@@ -1506,6 +1578,21 @@ dependencies = [
 "unicode-ident",
 ]

+[[package]]
+name = "quanta"
+version = "0.12.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3ab5a9d756f0d97bdc89019bd2e4ea098cf9cde50ee7564dde6b81ccc8f06c7"
+dependencies = [
+ "crossbeam-utils",
+ "libc",
+ "once_cell",
+ "raw-cpuid",
+ "wasi",
+ "web-sys",
+ "winapi",
+]
+
 [[package]]
 name = "quinn"
 version = "0.11.9"
@@ -1658,6 +1745,15 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c8d0fd677905edcbeedbf2edb6494d676f0e98d54d5cf9bda0b061cb8fb8aba"

+[[package]]
+name = "raw-cpuid"
+version = "11.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "498cd0dc59d73224351ee52a95fee0f1a617a2eae0e7d9d720cc622c73a54186"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.5.18"
@@ -1953,6 +2049,7 @@ dependencies = [
 "aes-gcm",
 "anyhow",
 "chrono",
+ "hex",
 "rand 0.10.0",
 "serde",
 "serde_json",
@@ -1960,6 +2057,7 @@ dependencies = [
 "sha2",
 "sqlx",
 "tempfile",
+ "thiserror",
 "tokio",
 "toml",
 "tracing",
@@ -1968,7 +2066,7 @@ dependencies = [

 [[package]]
 name = "secrets-mcp"
-version = "0.3.9"
+version = "0.5.7"
 dependencies = [
 "anyhow",
 "askama",
@@ -1976,6 +2074,7 @@ dependencies = [
 "axum-extra",
 "chrono",
 "dotenvy",
+ "governor",
 "http",
 "rand 0.10.0",
 "reqwest",
@@ -1994,6 +2093,7 @@ dependencies = [
 "tower-sessions-sqlx-store-chrono",
 "tracing",
 "tracing-subscriber",
+ "url",
 "urlencoding",
 "uuid",
 ]
@@ -2194,6 +2294,15 @@ dependencies = [
 "lock_api",
 ]

+[[package]]
+name = "spinning_top"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d96d2d1d716fb500937168cc09353ffdc7a012be8475ac7308e1bdf0e3923300"
+dependencies = [
+ "lock_api",
+]
+
 [[package]]
 name = "spki"
 version = "0.7.3"
@@ -2716,6 +2825,7 @@ dependencies = [
 "futures-util",
 "http",
 "http-body",
+ "http-body-util",
 "iri-string",
 "pin-project-lite",
 "tower",
@@ -3166,6 +3276,28 @@ dependencies = [
 "wasite",
 ]

+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows-core"
 version = "0.62.2"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,6 +28,7 @@ rand = "^0.10.0"

 # Utils
 anyhow = "^1.0.102"
+thiserror = "^2"
 chrono = { version = "^0.4.44", features = ["serde"] }
 uuid = { version = "^1.22.0", features = ["serde"] }
 tracing = "^0.1"
--- a/README.md
+++ b/README.md
@@ -25,6 +25,13 @@ cargo build --release -p secrets-mcp
 | `SECRETS_MCP_BIND` | 监听地址，默认 `127.0.0.1:9315`。容器内或直接对外暴露端口时请改为 `0.0.0.0:9315`；反代时常为 `127.0.0.1:9315`。 |
 | `GOOGLE_CLIENT_ID` / `GOOGLE_CLIENT_SECRET` | 可选；不配置则无 Google 登录入口。运行时从环境读取，勿写入 CI、勿打入二进制。 |
 | `RUST_LOG` | 可选；日志级别，如 `secrets_mcp=debug`。 |
+| `SECRETS_DATABASE_POOL_SIZE` | 可选。连接池最大连接数，默认 `10`。 |
+| `SECRETS_DATABASE_ACQUIRE_TIMEOUT` | 可选。获取连接超时秒数，默认 `5`。 |
+| `RATE_LIMIT_GLOBAL_PER_SECOND` | 可选。全局限流速率，默认 `100` req/s。 |
+| `RATE_LIMIT_GLOBAL_BURST` | 可选。全局限流突发量，默认 `200`。 |
+| `RATE_LIMIT_IP_PER_SECOND` | 可选。单 IP 限流速率，默认 `20` req/s。 |
+| `RATE_LIMIT_IP_BURST` | 可选。单 IP 限流突发量，默认 `40`。 |
+| `TRUST_PROXY` | 可选。设为 `1`/`true`/`yes` 时从 `X-Forwarded-For` / `X-Real-IP` 提取客户端 IP；仅在反代环境下启用。 |

 ```bash
 cargo run -p secrets-mcp
@@ -54,10 +61,31 @@ SECRETS_ENV=production

 条目在逻辑上以 **`(folder, name)`** 在用户内唯一（数据库唯一索引：`user_id + folder + name`）。同名可在不同 folder 下各存一条（例如 `refining/aliyun` 与 `ricnsmart/aliyun`）。

- **`secrets_search`**：发现条目（可按 query / folder / type / name 过滤）；不要求加密头。
- **`secrets_get` / `secrets_update` / `secrets_delete`（按 name）/ `secrets_history` / `secrets_rollback`**：仅 `name` 且全局唯一则直接命中；若多条同名，返回消歧错误，需在参数中补 **`folder`**。
- **`secrets_delete`**：`dry_run=true` 时与真实删除相同的消歧规则——唯一则预览一条，多条则报错并要求 `folder`。
- **共享 key 自动迁移删除**：删除仍被 `metadata.key_ref` 引用的 key 条目时，系统会自动迁移：把密文复制到首个引用方，并将其余引用方的 `key_ref` 重定向到新 owner，然后继续删除。
+### 工具列表
+
+| 工具 | 需要加密密钥 | 说明 |
+|------|-------------|------|
+| `secrets_find` | 否 | 发现条目（返回含 secret_fields schema），支持 `name_query` 模糊匹配 |
+| `secrets_search` | 否 | 搜索条目，支持 `query`/`folder`/`type`/`name` 过滤、`sort`/`offset` 分页、`summary` 摘要模式 |
+| `secrets_get` | 是 | 按 UUID `id` 获取单条条目及解密后的 secrets |
+| `secrets_add` | 是 | 添加新条目，支持 `meta_obj`/`secrets_obj` JSON 对象参数、`secret_types` 指定密钥类型、`link_secret_names` 关联已有 secret |
+| `secrets_update` | 是 | 更新条目，支持 `id` 或 `name`+`folder` 定位 |
+| `secrets_delete` | 否 | 删除条目，支持 `id` 或 `name`+`folder` 定位；`dry_run=true` 预览删除 |
+| `secrets_history` | 否 | 查看条目历史，支持 `id` 或 `name`+`folder` 定位 |
+| `secrets_rollback` | 是 | 回滚条目到指定历史版本，支持 `id` 或 `name`+`folder` 定位 |
+| `secrets_export` | 是 | 导出条目（含解密明文），支持 JSON/TOML/YAML 格式 |
+| `secrets_env_map` | 是 | 将 secrets 转换为环境变量映射（`UPPER(entry)_UPPER(field)` 格式），支持 `prefix` |
+| `secrets_overview` | 否 | 返回各 folder 和 type 的 entry 计数概览 |
+
+### 消歧规则
+
+- **按 `name` 定位的工具**（`secrets_update` / `secrets_delete` / `secrets_history` / `secrets_rollback`）：若该用户下仅一条匹配则直接执行；若多条（同 `name`、不同 `folder`）则返回错误并提示补全 `folder`。也可直接传 `id`（UUID）跳过消歧。
+- **`secrets_get`** 仅支持通过 `id`（UUID）获取。
+- **`secrets_delete`** 的 `dry_run=true` 与真实删除使用相同消歧规则——唯一则预览一条，多条则报错并要求 `folder`。
+
+### 共享密钥
+
+N:N 关联下，删除 entry 仅解除关联，被共享的 secret 若仍被其他 entry 引用则保留；无引用时自动清理。

 ## 加密架构（混合 E2EE）

@@ -151,25 +179,32 @@ flowchart LR

 ## 数据模型

-主表 **`entries`**（`folder`、`type`、`name`、`notes`、`tags`、`metadata`，多租户时带 `user_id`）+ 子表 **`secrets`**（每行一个加密字段：`field_name`、`encrypted`）。**唯一性**：`UNIQUE(user_id, folder, name)`（`user_id` 为空时为遗留行唯一 `(folder, name)`）。另有 `entries_history`、`secrets_history`、`audit_log`，以及 **`users`**（含 `key_salt`、`key_check`、`key_params`、`api_key`）、**`oauth_accounts`**。首次连库自动迁移建表（`secrets-core` 的 `migrate`）；已有库可对照 [`scripts/migrate-v0.3.0.sql`](scripts/migrate-v0.3.0.sql) 做列重命名与索引重建。**Web 登录会话**（tower-sessions）使用同一 `SECRETS_DATABASE_URL`，进程启动时对会话存储执行迁移（见 `secrets-mcp` 中 `PostgresStore::migrate`），无需额外环境变量。
+主表 **`entries`**（`folder`、`type`、`name`、`notes`、`tags`、`metadata`，多租户时带 `user_id`）+ 子表 **`secrets`**（每行一个加密字段：`name`、`type`、`encrypted`，通过 `entry_secrets` 中间表与 entry 建立 N:N 关联）。**唯一性**：`UNIQUE(user_id, folder, name)`（`user_id` 为空时为遗留行唯一 `(folder, name)`）。另有 `entries_history`、`secrets_history`、`audit_log`，以及 **`users`**（含 `key_salt`、`key_check`、`key_params`、`api_key`）、**`oauth_accounts`**。首次连库自动迁移建表（`secrets-core` 的 `migrate`）；已有库在进程启动时亦由同一 `migrate()` 增量补齐表、索引与 N:N 结构。若需从更早版本对照一次性 SQL，可在 git 历史中检索已移除的 `scripts/migrate-v0.3.0.sql`。**Web 登录会话**（tower-sessions）使用同一 `SECRETS_DATABASE_URL`，进程启动时对会话存储执行迁移（见 `secrets-mcp` 中 `PostgresStore::migrate`），无需额外环境变量。

 | 位置 | 字段 | 说明 |
 |------|------|------|
 | entries | folder | 组织/隔离空间，如 `refining`、`ricnsmart`；参与唯一键 |
-| entries | type | 软分类，如 `server`、`service`、`key`、`person`（可扩展，不参与唯一键） |
+| entries | type | 软分类，用户自定义，如 `server`、`service`、`account`、`person`、`document`（不参与唯一键） |
 | entries | name | 人类可读标识；与 `folder` 一起在用户内唯一 |
 | entries | notes | 非敏感说明文本 |
-| entries | metadata | 明文 JSON（ip、url、`key_ref` 等） |
-| secrets | field_name | 明文字段名，便于 schema 展示 |
+| entries | metadata | 明文 JSON（ip、url、subtype 等） |
+| secrets | name | 密钥名称（调用方提供） |
+| secrets | type | 密钥类型（调用方提供，默认 `text`） |
 | secrets | encrypted | AES-GCM 密文（含 nonce） |
 | users | key_salt | PBKDF2 salt（32B），首次设置密码短语时写入 |
 | users | key_check | 派生密钥加密已知常量，用于验证密码短语 |
 | users | key_params | 派生算法参数，如 `{"alg":"pbkdf2-sha256","iterations":600000}` |

-### PEM 共享（`key_ref`）
+### 共享密钥（N:N 关联）

-同一 PEM 可被多条 `server` 等记录引用：建议将 PEM 存为 **`type=key`** 的 entry，在其它条目的 `metadata.key_ref` 中写目标 entry 的 `name`（支持 `folder/name` 格式消歧）；轮换时只更新该目标记录即可。
-删除共享 key 时，系统会自动迁移引用：将密文复制到首个引用方（单副本），其余引用方的 `key_ref` 自动重定向到该新 owner，再删除原 key 记录。
+多个条目可共享同一密文字段，通过 `entry_secrets` 中间表实现 N:N 关联：
+- 添加条目时可通过 `link_secret_names` 参数关联已有的 secret（按 `(user_id, name)` 精确匹配查找）
+- 同一 secret 可被多个 entry 引用，删除某 entry 不会级联删除被共享的 secret
+- 当 secret 不再被任何 entry 引用时，自动清理（`NOT EXISTS` 子查询）
+
+### 类型（Type）
+
+`type` 字段用于软分类，由用户自由填写，不做任何自动转换或归一化。常见示例：`server`、`service`、`account`、`person`、`document`，但任何值均可接受。

 ## 审计日志

@@ -188,10 +223,18 @@ LIMIT 20;
 ```
 Cargo.toml
 crates/secrets-core/     # db / crypto / models / audit / service
+  src/
+    taxonomy.rs          # SECRET_TYPE_OPTIONS（secret 字段类型下拉选项）
+    service/             # 业务逻辑（add, search, update, delete, export, env_map 等）
 crates/secrets-mcp/     # MCP HTTP、Web、OAuth、API Key
 scripts/
-  migrate-v0.3.0.sql    # 可选：手动 SQL 迁移（namespace/kind → folder/type、唯一键含 folder）
-deploy/                 # systemd、.env 示例
+  release-check.sh      # 发版前 fmt / clippy / test
+  setup-gitea-actions.sh
+  sync-test-to-prod.sh  # 测试库同步到生产（按需）
+deploy/
+  .env.example          # 环境变量模板
+  secrets-mcp.service   # systemd 服务文件（生产部署用）
+  postgres-tls-hardening.md  # PostgreSQL TLS 加固运维手册
 ```

 ## CI/CD（Gitea Actions）
--- a/crates/secrets-core/Cargo.toml
+++ b/crates/secrets-core/Cargo.toml
@@ -10,7 +10,9 @@ path = "src/lib.rs"
 [dependencies]
 aes-gcm.workspace = true
 anyhow.workspace = true
+thiserror.workspace = true
 chrono.workspace = true
+hex = "0.4"
 rand.workspace = true
 serde.workspace = true
 serde_json.workspace = true
--- a/crates/secrets-core/src/crypto.rs
+++ b/crates/secrets-core/src/crypto.rs
@@ -5,6 +5,8 @@ use aes_gcm::{
 use anyhow::{Context, Result, bail};
 use serde_json::Value;

+use crate::error::AppError;
+
 const NONCE_LEN: usize = 12;

 // ─── AES-256-GCM encrypt / decrypt ───────────────────────────────────────────
@@ -38,7 +40,7 @@ pub fn decrypt(master_key: &[u8; 32], data: &[u8]) -> Result<Vec<u8>> {
    let nonce = Nonce::from_slice(nonce_bytes);
    cipher
        .decrypt(nonce, ciphertext)
-        .map_err(|_| anyhow::anyhow!("decryption failed — wrong master key or corrupted data"))
+        .map_err(|_| AppError::DecryptionFailed.into())
 }

 // ─── JSON helpers ─────────────────────────────────────────────────────────────
@@ -59,7 +61,7 @@ pub fn decrypt_json(master_key: &[u8; 32], data: &[u8]) -> Result<Value> {

 /// Parse a 64-char hex string (from X-Encryption-Key header) into a 32-byte key.
 pub fn extract_key_from_hex(hex_str: &str) -> Result<[u8; 32]> {
-    let bytes = hex::decode_hex(hex_str.trim())?;
+    let bytes = ::hex::decode(hex_str.trim())?;
    if bytes.len() != 32 {
        bail!(
            "X-Encryption-Key must be 64 hex chars (32 bytes), got {} bytes",
@@ -74,21 +76,14 @@ pub fn extract_key_from_hex(hex_str: &str) -> Result<[u8; 32]> {
 // ─── Public hex helpers ───────────────────────────────────────────────────────

 pub mod hex {
-    use anyhow::{Result, bail};
+    use anyhow::Result;

    pub fn encode_hex(bytes: &[u8]) -> String {
        bytes.iter().map(|b| format!("{:02x}", b)).collect()
    }

    pub fn decode_hex(s: &str) -> Result<Vec<u8>> {
-        let s = s.trim();
-        if !s.len().is_multiple_of(2) {
-            bail!("hex string has odd length");
-        }
-        (0..s.len())
-            .step_by(2)
-            .map(|i| u8::from_str_radix(&s[i..i + 2], 16).map_err(|e| anyhow::anyhow!("{}", e)))
-            .collect()
+        Ok(::hex::decode(s.trim())?)
    }
 }

--- a/crates/secrets-core/src/db.rs
+++ b/crates/secrets-core/src/db.rs
@@ -1,7 +1,7 @@
 use std::str::FromStr;

 use anyhow::{Context, Result};
-use serde_json::Value;
+use serde_json::{Map, Value};
 use sqlx::PgPool;
 use sqlx::postgres::{PgConnectOptions, PgPoolOptions, PgSslMode};

@@ -36,12 +36,31 @@ fn build_connect_options(config: &DatabaseConfig) -> Result<PgConnectOptions> {
 pub async fn create_pool(config: &DatabaseConfig) -> Result<PgPool> {
    tracing::debug!("connecting to database");
    let connect_options = build_connect_options(config)?;
+
+    // Connection pool configuration from environment
+    let max_connections = std::env::var("SECRETS_DATABASE_POOL_SIZE")
+        .ok()
+        .and_then(|v| v.parse::<u32>().ok())
+        .unwrap_or(10);
+
+    let acquire_timeout_secs = std::env::var("SECRETS_DATABASE_ACQUIRE_TIMEOUT")
+        .ok()
+        .and_then(|v| v.parse::<u64>().ok())
+        .unwrap_or(5);
+
    let pool = PgPoolOptions::new()
-        .max_connections(10)
-        .acquire_timeout(std::time::Duration::from_secs(5))
+        .max_connections(max_connections)
+        .acquire_timeout(std::time::Duration::from_secs(acquire_timeout_secs))
+        .max_lifetime(std::time::Duration::from_secs(1800)) // 30 minutes
+        .idle_timeout(std::time::Duration::from_secs(600)) // 10 minutes
        .connect_with(connect_options)
        .await?;
-    tracing::debug!("database connection established");
+
+    tracing::debug!(
+        max_connections,
+        acquire_timeout_secs,
+        "database connection established"
+    );
    Ok(pool)
 }

@@ -543,4 +562,75 @@ pub async fn snapshot_secret_history(
    Ok(())
 }

+pub const ENTRY_HISTORY_SECRETS_KEY: &str = "__secrets_snapshot_v1";
+
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct EntrySecretSnapshot {
+    pub name: String,
+    #[serde(rename = "type")]
+    pub secret_type: String,
+    pub encrypted_hex: String,
+}
+
+pub async fn metadata_with_secret_snapshot(
+    tx: &mut sqlx::Transaction<'_, sqlx::Postgres>,
+    entry_id: uuid::Uuid,
+    metadata: &Value,
+) -> Result<Value> {
+    #[derive(sqlx::FromRow)]
+    struct Row {
+        name: String,
+        #[sqlx(rename = "type")]
+        secret_type: String,
+        encrypted: Vec<u8>,
+    }
+
+    let rows: Vec<Row> = sqlx::query_as(
+        "SELECT s.name, s.type, s.encrypted \
+         FROM entry_secrets es \
+         JOIN secrets s ON s.id = es.secret_id \
+         WHERE es.entry_id = $1 \
+         ORDER BY s.name ASC",
+    )
+    .bind(entry_id)
+    .fetch_all(&mut **tx)
+    .await?;
+
+    let snapshots: Vec<EntrySecretSnapshot> = rows
+        .into_iter()
+        .map(|r| EntrySecretSnapshot {
+            name: r.name,
+            secret_type: r.secret_type,
+            encrypted_hex: ::hex::encode(r.encrypted),
+        })
+        .collect();
+
+    let mut merged = match metadata.clone() {
+        Value::Object(obj) => obj,
+        _ => Map::new(),
+    };
+    merged.insert(
+        ENTRY_HISTORY_SECRETS_KEY.to_string(),
+        serde_json::to_value(snapshots)?,
+    );
+    Ok(Value::Object(merged))
+}
+
+pub fn strip_secret_snapshot_from_metadata(metadata: &Value) -> Value {
+    let mut m = match metadata.clone() {
+        Value::Object(obj) => obj,
+        _ => return metadata.clone(),
+    };
+    m.remove(ENTRY_HISTORY_SECRETS_KEY);
+    Value::Object(m)
+}
+
+pub fn entry_secret_snapshot_from_metadata(metadata: &Value) -> Option<Vec<EntrySecretSnapshot>> {
+    let Value::Object(map) = metadata else {
+        return None;
+    };
+    let raw = map.get(ENTRY_HISTORY_SECRETS_KEY)?;
+    serde_json::from_value(raw.clone()).ok()
+}
+
 // ── DB helpers ────────────────────────────────────────────────────────────────
--- a/crates/secrets-core/src/error.rs
+++ b/crates/secrets-core/src/error.rs
@@ -0,0 +1,172 @@
+use sqlx::error::DatabaseError;
+
+/// Structured business errors for the secrets service.
+///
+/// These replace ad-hoc `anyhow` strings for expected failure modes,
+/// allowing MCP and Web layers to map to appropriate protocol-level errors.
+#[derive(Debug, thiserror::Error)]
+pub enum AppError {
+    #[error("A secret with the name '{secret_name}' already exists for this user")]
+    ConflictSecretName { secret_name: String },
+
+    #[error("An entry with folder='{folder}' and name='{name}' already exists")]
+    ConflictEntryName { folder: String, name: String },
+
+    #[error("Entry not found")]
+    NotFoundEntry,
+
+    #[error("User not found")]
+    NotFoundUser,
+
+    #[error("Secret not found")]
+    NotFoundSecret,
+
+    #[error("Authentication failed")]
+    AuthenticationFailed,
+
+    #[error("Unauthorized: insufficient permissions")]
+    Unauthorized,
+
+    #[error("Validation failed: {message}")]
+    Validation { message: String },
+
+    #[error("Concurrent modification detected")]
+    ConcurrentModification,
+
+    #[error("Decryption failed — the encryption key may be incorrect")]
+    DecryptionFailed,
+
+    #[error("Encryption key not set — user must set passphrase first")]
+    EncryptionKeyNotSet,
+
+    #[error(transparent)]
+    Internal(#[from] anyhow::Error),
+}
+
+impl AppError {
+    /// Try to convert a sqlx database error into a structured `AppError`.
+    ///
+    /// The caller should provide the context (which table was being written,
+    /// what values were being inserted) so we can produce a meaningful error.
+    pub fn from_db_error(err: sqlx::Error, ctx: DbErrorContext<'_>) -> Self {
+        if let sqlx::Error::Database(ref db_err) = err
+            && db_err.code().as_deref() == Some("23505")
+        {
+            return Self::from_unique_violation(db_err.as_ref(), ctx);
+        }
+        AppError::Internal(err.into())
+    }
+
+    fn from_unique_violation(db_err: &dyn DatabaseError, ctx: DbErrorContext<'_>) -> Self {
+        let constraint = db_err.constraint();
+
+        match constraint {
+            Some("idx_secrets_unique_user_name") => AppError::ConflictSecretName {
+                secret_name: ctx.secret_name.unwrap_or("unknown").to_string(),
+            },
+            Some("idx_entries_unique_user") | Some("idx_entries_unique_legacy") => {
+                AppError::ConflictEntryName {
+                    folder: ctx.folder.unwrap_or("").to_string(),
+                    name: ctx.name.unwrap_or("unknown").to_string(),
+                }
+            }
+            _ => {
+                // Fall back to message-based detection for unnamed constraints
+                let msg = db_err.message();
+                if msg.contains("secrets") {
+                    AppError::ConflictSecretName {
+                        secret_name: ctx.secret_name.unwrap_or("unknown").to_string(),
+                    }
+                } else {
+                    AppError::ConflictEntryName {
+                        folder: ctx.folder.unwrap_or("").to_string(),
+                        name: ctx.name.unwrap_or("unknown").to_string(),
+                    }
+                }
+            }
+        }
+    }
+}
+
+/// Context hints used when converting a database error to `AppError`.
+#[derive(Debug, Default, Clone, Copy)]
+pub struct DbErrorContext<'a> {
+    pub secret_name: Option<&'a str>,
+    pub folder: Option<&'a str>,
+    pub name: Option<&'a str>,
+}
+
+impl<'a> DbErrorContext<'a> {
+    pub fn secret_name(name: &'a str) -> Self {
+        Self {
+            secret_name: Some(name),
+            ..Default::default()
+        }
+    }
+
+    pub fn entry(folder: &'a str, name: &'a str) -> Self {
+        Self {
+            folder: Some(folder),
+            name: Some(name),
+            ..Default::default()
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn app_error_display_messages() {
+        let err = AppError::ConflictSecretName {
+            secret_name: "token".to_string(),
+        };
+        assert!(err.to_string().contains("token"));
+
+        let err = AppError::ConflictEntryName {
+            folder: "refining".to_string(),
+            name: "gitea".to_string(),
+        };
+        assert!(err.to_string().contains("refining"));
+        assert!(err.to_string().contains("gitea"));
+
+        let err = AppError::NotFoundEntry;
+        assert_eq!(err.to_string(), "Entry not found");
+
+        let err = AppError::NotFoundUser;
+        assert_eq!(err.to_string(), "User not found");
+
+        let err = AppError::NotFoundSecret;
+        assert_eq!(err.to_string(), "Secret not found");
+
+        let err = AppError::AuthenticationFailed;
+        assert_eq!(err.to_string(), "Authentication failed");
+
+        let err = AppError::Unauthorized;
+        assert!(err.to_string().contains("Unauthorized"));
+
+        let err = AppError::Validation {
+            message: "too long".to_string(),
+        };
+        assert!(err.to_string().contains("too long"));
+
+        let err = AppError::ConcurrentModification;
+        assert!(err.to_string().contains("Concurrent modification"));
+
+        let err = AppError::EncryptionKeyNotSet;
+        assert!(err.to_string().contains("Encryption key not set"));
+    }
+
+    #[test]
+    fn db_error_context_helpers() {
+        let ctx = DbErrorContext::secret_name("my_key");
+        assert_eq!(ctx.secret_name, Some("my_key"));
+        assert!(ctx.folder.is_none());
+
+        let ctx = DbErrorContext::entry("prod", "db-creds");
+        assert_eq!(ctx.folder, Some("prod"));
+        assert_eq!(ctx.name, Some("db-creds"));
+        assert!(ctx.secret_name.is_none());
+    }
+}
--- a/crates/secrets-core/src/lib.rs
+++ b/crates/secrets-core/src/lib.rs
@@ -2,5 +2,7 @@ pub mod audit;
 pub mod config;
 pub mod crypto;
 pub mod db;
+pub mod error;
 pub mod models;
 pub mod service;
+pub mod taxonomy;
--- a/crates/secrets-core/src/models.rs
+++ b/crates/secrets-core/src/models.rs
@@ -4,7 +4,7 @@ use serde_json::Value;
 use std::collections::BTreeMap;
 use uuid::Uuid;

-/// A top-level entry (server, service, key, person, …).
+/// A top-level entry (server, service, account, person, …).
 /// Sensitive fields are stored separately in `secrets`.
 #[derive(Debug, Serialize, Deserialize, sqlx::FromRow)]
 pub struct Entry {
--- a/crates/secrets-core/src/service/add.rs
+++ b/crates/secrets-core/src/service/add.rs
@@ -7,6 +7,7 @@ use uuid::Uuid;

 use crate::crypto;
 use crate::db;
+use crate::error::{AppError, DbErrorContext};
 use crate::models::EntryRow;

 // ── Key/value parsing helpers ─────────────────────────────────────────────────
@@ -177,13 +178,18 @@ pub struct AddParams<'a> {
    pub tags: &'a [String],
    pub meta_entries: &'a [String],
    pub secret_entries: &'a [String],
+    pub secret_types: &'a std::collections::HashMap<String, String>,
    pub link_secret_names: &'a [String],
    /// Optional user_id for multi-user isolation (None = single-user CLI mode)
    pub user_id: Option<Uuid>,
 }

 pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) -> Result<AddResult> {
-    let metadata = build_json(params.meta_entries)?;
+    let Value::Object(metadata_map) = build_json(params.meta_entries)? else {
+        unreachable!("build_json always returns a JSON object");
+    };
+    let entry_type = params.entry_type.trim();
+    let metadata = Value::Object(metadata_map);
    let secret_json = build_json(params.secret_entries)?;
    let meta_keys = collect_key_paths(params.meta_entries)?;
    let secret_keys = collect_key_paths(params.secret_entries)?;
@@ -217,26 +223,40 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
        .await?
    };

-    if let Some(ref ex) = existing
-        && let Err(e) = db::snapshot_entry_history(
+    if let Some(ref ex) = existing {
+        let history_metadata =
+            match db::metadata_with_secret_snapshot(&mut tx, ex.id, &ex.metadata).await {
+                Ok(v) => v,
+                Err(e) => {
+                    tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                    ex.metadata.clone()
+                }
+            };
+        if let Err(e) = db::snapshot_entry_history(
            &mut tx,
            db::EntrySnapshotParams {
                entry_id: ex.id,
                user_id: params.user_id,
                folder: params.folder,
-                entry_type: params.entry_type,
+                entry_type,
                name: params.name,
                version: ex.version,
                action: "add",
                tags: &ex.tags,
-                metadata: &ex.metadata,
+                metadata: &history_metadata,
            },
        )
        .await
-    {
-        tracing::warn!(error = %e, "failed to snapshot entry history before upsert");
+        {
+            tracing::warn!(error = %e, "failed to snapshot entry history before upsert");
+        }
    }

+    // Upsert the entry row. On conflict (existing entry with same user_id+folder+name),
+    // the entry columns are replaced wholesale. The old secret associations are torn down
+    // below within the same transaction, so the whole operation is atomic: if any step
+    // after this point fails, the transaction rolls back and the entry reverts to its
+    // pre-upsert state (including the version bump that happened in the DO UPDATE clause).
    let entry_id: Uuid = if let Some(uid) = params.user_id {
        sqlx::query_scalar(
            r#"INSERT INTO entries (user_id, folder, type, name, notes, tags, metadata, version, updated_at)
@@ -254,7 +274,7 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
        )
        .bind(uid)
        .bind(params.folder)
-        .bind(params.entry_type)
+        .bind(entry_type)
        .bind(params.name)
        .bind(params.notes)
        .bind(params.tags)
@@ -277,7 +297,7 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
               RETURNING id"#,
        )
        .bind(params.folder)
-        .bind(params.entry_type)
+        .bind(entry_type)
        .bind(params.name)
        .bind(params.notes)
        .bind(params.tags)
@@ -292,26 +312,6 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
            .fetch_one(&mut *tx)
            .await?;

-    if existing.is_none()
-        && let Err(e) = db::snapshot_entry_history(
-            &mut tx,
-            db::EntrySnapshotParams {
-                entry_id,
-                user_id: params.user_id,
-                folder: params.folder,
-                entry_type: params.entry_type,
-                name: params.name,
-                version: current_entry_version,
-                action: "create",
-                tags: params.tags,
-                metadata: &metadata,
-            },
-        )
-        .await
-    {
-        tracing::warn!(error = %e, "failed to snapshot entry history on create");
-    }
-
    if existing.is_some() {
        #[derive(sqlx::FromRow)]
        struct ExistingField {
@@ -345,30 +345,42 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
            }
        }

+        let orphan_candidates: Vec<Uuid> = existing_fields.iter().map(|f| f.id).collect();
+
        sqlx::query("DELETE FROM entry_secrets WHERE entry_id = $1")
            .bind(entry_id)
            .execute(&mut *tx)
            .await?;

-        sqlx::query(
-            "DELETE FROM secrets s \
-             WHERE NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = s.id)",
-        )
-        .execute(&mut *tx)
-        .await?;
+        if !orphan_candidates.is_empty() {
+            sqlx::query(
+                "DELETE FROM secrets s \
+                 WHERE s.id = ANY($1) \
+                   AND NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = s.id)",
+            )
+            .bind(&orphan_candidates)
+            .execute(&mut *tx)
+            .await?;
+        }
    }

    for (field_name, field_value) in &flat_fields {
        let encrypted = crypto::encrypt_json(master_key, field_value)?;
+        let secret_type = params
+            .secret_types
+            .get(field_name)
+            .map(|s| s.as_str())
+            .unwrap_or("text");
        let secret_id: Uuid = sqlx::query_scalar(
            "INSERT INTO secrets (user_id, name, type, encrypted) VALUES ($1, $2, $3, $4) RETURNING id",
        )
            .bind(params.user_id)
            .bind(field_name)
-            .bind(infer_secret_type(field_name))
+            .bind(secret_type)
            .bind(&encrypted)
            .fetch_one(&mut *tx)
-            .await?;
+            .await
+            .map_err(|e| AppError::from_db_error(e, DbErrorContext::secret_name(field_name)))?;
        sqlx::query("INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2)")
            .bind(entry_id)
            .bind(secret_id)
@@ -409,12 +421,41 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
        }
    }

+    if existing.is_none() {
+        let history_metadata =
+            match db::metadata_with_secret_snapshot(&mut tx, entry_id, &metadata).await {
+                Ok(v) => v,
+                Err(e) => {
+                    tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                    metadata.clone()
+                }
+            };
+        if let Err(e) = db::snapshot_entry_history(
+            &mut tx,
+            db::EntrySnapshotParams {
+                entry_id,
+                user_id: params.user_id,
+                folder: params.folder,
+                entry_type,
+                name: params.name,
+                version: current_entry_version,
+                action: "create",
+                tags: params.tags,
+                metadata: &history_metadata,
+            },
+        )
+        .await
+        {
+            tracing::warn!(error = %e, "failed to snapshot entry history on create");
+        }
+    }
+
    crate::audit::log_tx(
        &mut tx,
        params.user_id,
        "add",
        params.folder,
-        params.entry_type,
+        entry_type,
        params.name,
        serde_json::json!({
            "tags": params.tags,
@@ -429,32 +470,13 @@ pub async fn run(pool: &PgPool, params: AddParams<'_>, master_key: &[u8; 32]) ->
    Ok(AddResult {
        name: params.name.to_string(),
        folder: params.folder.to_string(),
-        entry_type: params.entry_type.to_string(),
+        entry_type: entry_type.to_string(),
        tags: params.tags.to_vec(),
        meta_keys,
        secret_keys,
    })
 }

-pub(crate) fn infer_secret_type(name: &str) -> &'static str {
-    match name {
-        "ssh_key" => "pem",
-        "password" => "password",
-        "phone" | "phone_2" => "phone",
-        "webhook_url" | "address" => "url",
-        "access_key_id"
-        | "access_key_secret"
-        | "global_api_key"
-        | "api_key"
-        | "secret_key"
-        | "personal_access_token"
-        | "runner_token"
-        | "GOOGLE_CLIENT_ID"
-        | "GOOGLE_CLIENT_SECRET" => "token",
-        _ => "text",
-    }
-}
-
 fn validate_link_secret_names(
    link_secret_names: &[String],
    new_secret_names: &BTreeSet<String>,
@@ -601,6 +623,7 @@ mod tests {
                tags: &[],
                meta_entries: &[],
                secret_entries: &[],
+                secret_types: &Default::default(),
                link_secret_names: std::slice::from_ref(&secret_name),
                user_id: None,
            },
@@ -647,6 +670,7 @@ mod tests {
                tags: &[],
                meta_entries: &[],
                secret_entries: &[],
+                secret_types: &Default::default(),
                link_secret_names: std::slice::from_ref(&secret_name),
                user_id: None,
            },
@@ -697,6 +721,7 @@ mod tests {
                tags: &[],
                meta_entries: &[],
                secret_entries: &[],
+                secret_types: &Default::default(),
                link_secret_names: std::slice::from_ref(&secret_name),
                user_id: None,
            },
@@ -709,4 +734,69 @@ mod tests {
        cleanup_test_rows(&pool, &marker).await?;
        Ok(())
    }
+
+    #[tokio::test]
+    async fn add_duplicate_secret_name_returns_conflict_error() -> Result<()> {
+        let Some(pool) = maybe_test_pool().await else {
+            return Ok(());
+        };
+        let suffix = Uuid::from_u128(rand::random()).to_string();
+        let marker = format!("dup_secret_{}", &suffix[..8]);
+        let entry_name = format!("{}_entry", marker);
+        let secret_name = "shared_token";
+
+        cleanup_test_rows(&pool, &marker).await?;
+
+        // First add succeeds
+        run(
+            &pool,
+            AddParams {
+                name: &entry_name,
+                folder: &marker,
+                entry_type: "service",
+                notes: "",
+                tags: &[],
+                meta_entries: &[],
+                secret_entries: &[format!("{}=value1", secret_name)],
+                secret_types: &Default::default(),
+                link_secret_names: &[],
+                user_id: None,
+            },
+            &[0_u8; 32],
+        )
+        .await?;
+
+        // Second add with same secret name under same user_id should fail with ConflictSecretName
+        let entry_name2 = format!("{}_entry2", marker);
+        let err = run(
+            &pool,
+            AddParams {
+                name: &entry_name2,
+                folder: &marker,
+                entry_type: "service",
+                notes: "",
+                tags: &[],
+                meta_entries: &[],
+                secret_entries: &[format!("{}=value2", secret_name)],
+                secret_types: &Default::default(),
+                link_secret_names: &[],
+                user_id: None,
+            },
+            &[0_u8; 32],
+        )
+        .await
+        .expect_err("must fail on duplicate secret name");
+
+        let app_err = err
+            .downcast_ref::<crate::error::AppError>()
+            .expect("error should be AppError");
+        assert!(
+            matches!(app_err, crate::error::AppError::ConflictSecretName { .. }),
+            "expected ConflictSecretName, got: {}",
+            app_err
+        );
+
+        cleanup_test_rows(&pool, &marker).await?;
+        Ok(())
+    }
 }
--- a/crates/secrets-core/src/service/api_key.rs
+++ b/crates/secrets-core/src/service/api_key.rs
@@ -2,6 +2,8 @@ use anyhow::Result;
 use sqlx::PgPool;
 use uuid::Uuid;

+use crate::error::AppError;
+
 const KEY_PREFIX: &str = "sk_";

 /// Generate a new API key: `sk_<64 hex chars>` = 67 characters total.
@@ -14,23 +16,32 @@ pub fn generate_api_key() -> String {
 }

 /// Return the user's existing API key, or generate and store a new one if NULL.
+/// Uses a transaction with atomic update to prevent TOCTOU race conditions.
 pub async fn ensure_api_key(pool: &PgPool, user_id: Uuid) -> Result<String> {
-    let existing: Option<(Option<String>,)> =
-        sqlx::query_as("SELECT api_key FROM users WHERE id = $1")
-            .bind(user_id)
-            .fetch_optional(pool)
-            .await?;
+    let mut tx = pool.begin().await?;

-    if let Some((Some(key),)) = existing {
+    // Lock the row and check existing key
+    let existing: (Option<String>,) =
+        sqlx::query_as("SELECT api_key FROM users WHERE id = $1 FOR UPDATE")
+            .bind(user_id)
+            .fetch_optional(&mut *tx)
+            .await?
+            .ok_or(AppError::NotFoundUser)?;
+
+    if let Some(key) = existing.0 {
+        tx.commit().await?;
        return Ok(key);
    }

+    // Generate and store new key atomically
    let new_key = generate_api_key();
    sqlx::query("UPDATE users SET api_key = $1 WHERE id = $2")
        .bind(&new_key)
        .bind(user_id)
-        .execute(pool)
+        .execute(&mut *tx)
        .await?;
+
+    tx.commit().await?;
    Ok(new_key)
 }

--- a/crates/secrets-core/src/service/audit_log.rs
+++ b/crates/secrets-core/src/service/audit_log.rs
@@ -4,20 +4,36 @@ use uuid::Uuid;

 use crate::models::AuditLogEntry;

-pub async fn list_for_user(pool: &PgPool, user_id: Uuid, limit: i64) -> Result<Vec<AuditLogEntry>> {
+pub async fn list_for_user(
+    pool: &PgPool,
+    user_id: Uuid,
+    limit: i64,
+    offset: i64,
+) -> Result<Vec<AuditLogEntry>> {
    let limit = limit.clamp(1, 200);
+    let offset = offset.max(0);

    let rows = sqlx::query_as(
        "SELECT id, user_id, action, folder, type, name, detail, created_at \
         FROM audit_log \
         WHERE user_id = $1 \
         ORDER BY created_at DESC, id DESC \
-         LIMIT $2",
+         LIMIT $2 OFFSET $3",
    )
    .bind(user_id)
    .bind(limit)
+    .bind(offset)
    .fetch_all(pool)
    .await?;

    Ok(rows)
 }
+
+pub async fn count_for_user(pool: &PgPool, user_id: Uuid) -> Result<i64> {
+    let count: i64 =
+        sqlx::query_scalar("SELECT COUNT(*)::bigint FROM audit_log WHERE user_id = $1")
+            .bind(user_id)
+            .fetch_one(pool)
+            .await?;
+    Ok(count)
+}
--- a/crates/secrets-core/src/service/delete.rs
+++ b/crates/secrets-core/src/service/delete.rs
@@ -17,7 +17,6 @@ pub struct DeletedEntry {
 #[derive(Debug, serde::Serialize)]
 pub struct DeleteResult {
    pub deleted: Vec<DeletedEntry>,
-    pub migrated: Vec<String>,
    pub dry_run: bool,
 }

@@ -32,173 +31,9 @@ pub struct DeleteParams<'a> {
    pub user_id: Option<Uuid>,
 }

-#[derive(Debug, sqlx::FromRow)]
-struct KeyReferrer {
-    id: Uuid,
-    folder: String,
-    #[sqlx(rename = "type")]
-    entry_type: String,
-    name: String,
-}
-
-fn ref_label(r: &KeyReferrer) -> String {
-    format!("{}/{} ({})", r.folder, r.name, r.entry_type)
-}
-
-fn ref_path(r: &KeyReferrer) -> String {
-    format!("{}/{}", r.folder, r.name)
-}
-
-async fn fetch_key_referrers_pool(
-    pool: &PgPool,
-    key_entry_id: Uuid,
-    key_folder: &str,
-    key_name: &str,
-    user_id: Option<Uuid>,
-) -> Result<Vec<KeyReferrer>> {
-    let qualified = format!("{}/{}", key_folder, key_name);
-    let refs: Vec<KeyReferrer> = if let Some(uid) = user_id {
-        sqlx::query_as(
-            "SELECT id, folder, type, name FROM entries \
-             WHERE user_id = $1 AND id <> $2 \
-               AND (metadata->>'key_ref' = $3 OR metadata->>'key_ref' = $4) \
-             ORDER BY folder, type, name",
-        )
-        .bind(uid)
-        .bind(key_entry_id)
-        .bind(key_name)
-        .bind(&qualified)
-        .fetch_all(pool)
-        .await?
-    } else {
-        sqlx::query_as(
-            "SELECT id, folder, type, name FROM entries \
-             WHERE user_id IS NULL AND id <> $1 \
-               AND (metadata->>'key_ref' = $2 OR metadata->>'key_ref' = $3) \
-             ORDER BY folder, type, name",
-        )
-        .bind(key_entry_id)
-        .bind(key_name)
-        .bind(&qualified)
-        .fetch_all(pool)
-        .await?
-    };
-    Ok(refs)
-}
-
-async fn migrate_key_refs_if_needed(
-    tx: &mut sqlx::Transaction<'_, sqlx::Postgres>,
-    key_row: &EntryRow,
-    key_name: &str,
-    user_id: Option<Uuid>,
-    dry_run: bool,
-) -> Result<Vec<String>> {
-    let qualified = format!("{}/{}", key_row.folder, key_name);
-    let refs: Vec<KeyReferrer> = if let Some(uid) = user_id {
-        sqlx::query_as(
-            "SELECT id, folder, type, name FROM entries \
-             WHERE user_id = $1 AND id <> $2 \
-               AND (metadata->>'key_ref' = $3 OR metadata->>'key_ref' = $4) \
-             ORDER BY folder, type, name",
-        )
-        .bind(uid)
-        .bind(key_row.id)
-        .bind(key_name)
-        .bind(&qualified)
-        .fetch_all(&mut **tx)
-        .await?
-    } else {
-        sqlx::query_as(
-            "SELECT id, folder, type, name FROM entries \
-             WHERE user_id IS NULL AND id <> $1 \
-               AND (metadata->>'key_ref' = $2 OR metadata->>'key_ref' = $3) \
-             ORDER BY folder, type, name",
-        )
-        .bind(key_row.id)
-        .bind(key_name)
-        .bind(&qualified)
-        .fetch_all(&mut **tx)
-        .await?
-    };
-
-    if refs.is_empty() {
-        return Ok(vec![]);
-    }
-    if dry_run {
-        return Ok(refs.iter().map(ref_label).collect());
-    }
-
-    let owner = &refs[0];
-    let owner_path = ref_path(owner);
-    let key_fields: Vec<SecretFieldRow> = sqlx::query_as(
-        "SELECT s.id, s.name, s.encrypted \
-         FROM entry_secrets es \
-         JOIN secrets s ON s.id = es.secret_id \
-         WHERE es.entry_id = $1",
-    )
-    .bind(key_row.id)
-    .fetch_all(&mut **tx)
-    .await?;
-
-    for f in &key_fields {
-        sqlx::query("INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2) ON CONFLICT DO NOTHING")
-        .bind(owner.id)
-        .bind(f.id)
-        .execute(&mut **tx)
-        .await?;
-    }
-
-    sqlx::query(
-        "UPDATE entries SET metadata = metadata - 'key_ref', \
-         version = version + 1, updated_at = NOW() WHERE id = $1",
-    )
-    .bind(owner.id)
-    .execute(&mut **tx)
-    .await?;
-
-    crate::audit::log_tx(
-        tx,
-        user_id,
-        "key_migrate",
-        &owner.folder,
-        &owner.entry_type,
-        &owner.name,
-        json!({
-            "from_key": format!("{}/{}", key_row.folder, key_name),
-            "role": "new_owner",
-            "redirect_target": owner_path,
-        }),
-    )
-    .await;
-
-    for r in refs.iter().skip(1) {
-        sqlx::query(
-            "UPDATE entries SET metadata = jsonb_set(metadata, '{key_ref}', to_jsonb($2::text), true), \
-             version = version + 1, updated_at = NOW() WHERE id = $1",
-        )
-        .bind(r.id)
-        .bind(&owner_path)
-        .execute(&mut **tx)
-        .await?;
-
-        crate::audit::log_tx(
-            tx,
-            user_id,
-            "key_migrate",
-            &r.folder,
-            &r.entry_type,
-            &r.name,
-            json!({
-                "from_key": format!("{}/{}", key_row.folder, key_name),
-                "role": "redirected_ref",
-                "redirect_to": owner_path,
-            }),
-        )
-        .await;
-    }
-
-    Ok(refs.iter().map(ref_label).collect())
-}
+/// Maximum number of entries that can be deleted in a single bulk operation.
+/// Prevents accidental mass deletion when filters are too broad.
+pub const MAX_BULK_DELETE: usize = 1000;

 /// Delete a single entry by id (multi-tenant: `user_id` must match).
 pub async fn delete_by_id(pool: &PgPool, entry_id: Uuid, user_id: Uuid) -> Result<DeleteResult> {
@@ -224,8 +59,6 @@ pub async fn delete_by_id(pool: &PgPool, entry_id: Uuid, user_id: Uuid) -> Resul
    let entry_type = row.entry_type.clone();
    let name = row.name.clone();
    let entry_row: EntryRow = (&row).into();
-    let migrated =
-        migrate_key_refs_if_needed(&mut tx, &entry_row, &name, Some(user_id), false).await?;

    snapshot_and_delete(
        &mut tx,
@@ -254,7 +87,6 @@ pub async fn delete_by_id(pool: &PgPool, entry_id: Uuid, user_id: Uuid) -> Resul
            folder,
            entry_type,
        }],
-        migrated,
        dry_run: false,
    })
 }
@@ -294,6 +126,7 @@ async fn delete_one(
        // - 2+ matches → disambiguation error (same as non-dry-run)
        #[derive(sqlx::FromRow)]
        struct DryRunRow {
+            #[allow(dead_code)]
            id: Uuid,
            folder: String,
            #[sqlx(rename = "type")]
@@ -339,20 +172,16 @@ async fn delete_one(
        return match rows.len() {
            0 => Ok(DeleteResult {
                deleted: vec![],
-                migrated: vec![],
                dry_run: true,
            }),
            1 => {
                let row = rows.into_iter().next().unwrap();
-                let refs =
-                    fetch_key_referrers_pool(pool, row.id, &row.folder, name, user_id).await?;
                Ok(DeleteResult {
                    deleted: vec![DeletedEntry {
                        name: name.to_string(),
                        folder: row.folder,
                        entry_type: row.entry_type,
                    }],
-                    migrated: refs.iter().map(ref_label).collect(),
                    dry_run: true,
                })
            }
@@ -417,7 +246,6 @@ async fn delete_one(
            tx.rollback().await?;
            return Ok(DeleteResult {
                deleted: vec![],
-                migrated: vec![],
                dry_run: false,
            });
        }
@@ -437,7 +265,6 @@ async fn delete_one(

    let folder = row.folder.clone();
    let entry_type = row.entry_type.clone();
-    let migrated = migrate_key_refs_if_needed(&mut tx, &row, name, user_id, false).await?;
    snapshot_and_delete(&mut tx, &folder, &entry_type, name, &row, user_id).await?;
    crate::audit::log_tx(
        &mut tx,
@@ -457,7 +284,6 @@ async fn delete_one(
            folder,
            entry_type,
        }],
-        migrated,
        dry_run: false,
    })
 }
@@ -497,33 +323,29 @@ async fn delete_bulk(
    }
    if entry_type.is_some() {
        conditions.push(format!("type = ${}", idx));
+        idx += 1;
    }

    let where_clause = format!("WHERE {}", conditions.join(" AND "));
-    let sql = format!(
-        "SELECT id, version, folder, type, name, metadata, tags, notes \
-         FROM entries {where_clause} ORDER BY type, name"
-    );
-
-    let mut q = sqlx::query_as::<_, FullEntryRow>(&sql);
-    if let Some(uid) = user_id {
-        q = q.bind(uid);
-    }
-    if let Some(f) = folder {
-        q = q.bind(f);
-    }
-    if let Some(t) = entry_type {
-        q = q.bind(t);
-    }
-    let rows = q.fetch_all(pool).await?;
+    let _ = idx; // used only for placeholder numbering in conditions

    if dry_run {
-        let mut migrated: Vec<String> = Vec::new();
-        for row in &rows {
-            let refs =
-                fetch_key_referrers_pool(pool, row.id, &row.folder, &row.name, user_id).await?;
-            migrated.extend(refs.iter().map(ref_label));
+        let sql = format!(
+            "SELECT id, version, folder, type, name, metadata, tags, notes \
+             FROM entries {where_clause} ORDER BY type, name"
+        );
+        let mut q = sqlx::query_as::<_, FullEntryRow>(&sql);
+        if let Some(uid) = user_id {
+            q = q.bind(uid);
        }
+        if let Some(f) = folder {
+            q = q.bind(f);
+        }
+        if let Some(t) = entry_type {
+            q = q.bind(t);
+        }
+        let rows = q.fetch_all(pool).await?;
+
        let deleted = rows
            .iter()
            .map(|r| DeletedEntry {
@@ -534,15 +356,41 @@ async fn delete_bulk(
            .collect();
        return Ok(DeleteResult {
            deleted,
-            migrated,
            dry_run: true,
        });
    }

+    let mut tx = pool.begin().await?;
+
+    let sql = format!(
+        "SELECT id, version, folder, type, name, metadata, tags, notes \
+         FROM entries {where_clause} ORDER BY type, name FOR UPDATE"
+    );
+    let mut q = sqlx::query_as::<_, FullEntryRow>(&sql);
+    if let Some(uid) = user_id {
+        q = q.bind(uid);
+    }
+    if let Some(f) = folder {
+        q = q.bind(f);
+    }
+    if let Some(t) = entry_type {
+        q = q.bind(t);
+    }
+    let rows = q.fetch_all(&mut *tx).await?;
+
+    if rows.len() > MAX_BULK_DELETE {
+        tx.rollback().await?;
+        anyhow::bail!(
+            "Bulk delete would affect {} entries (limit: {}). \
+             Narrow your filters or delete entries individually.",
+            rows.len(),
+            MAX_BULK_DELETE,
+        );
+    }
+
    let mut deleted = Vec::with_capacity(rows.len());
-    let mut migrated: Vec<String> = Vec::new();
    for row in &rows {
-        let entry_row = EntryRow {
+        let entry_row: EntryRow = EntryRow {
            id: row.id,
            version: row.version,
            folder: row.folder.clone(),
@@ -551,9 +399,6 @@ async fn delete_bulk(
            metadata: row.metadata.clone(),
            notes: row.notes.clone(),
        };
-        let mut tx = pool.begin().await?;
-        let m = migrate_key_refs_if_needed(&mut tx, &entry_row, &row.name, user_id, false).await?;
-        migrated.extend(m);
        snapshot_and_delete(
            &mut tx,
            &row.folder,
@@ -573,7 +418,6 @@ async fn delete_bulk(
            json!({"bulk": true}),
        )
        .await;
-        tx.commit().await?;
        deleted.push(DeletedEntry {
            name: row.name.clone(),
            folder: row.folder.clone(),
@@ -581,9 +425,10 @@ async fn delete_bulk(
        });
    }

+    tx.commit().await?;
+
    Ok(DeleteResult {
        deleted,
-        migrated,
        dry_run: false,
    })
 }
@@ -596,6 +441,15 @@ async fn snapshot_and_delete(
    row: &EntryRow,
    user_id: Option<Uuid>,
 ) -> Result<()> {
+    let history_metadata = match db::metadata_with_secret_snapshot(tx, row.id, &row.metadata).await
+    {
+        Ok(v) => v,
+        Err(e) => {
+            tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+            row.metadata.clone()
+        }
+    };
+
    if let Err(e) = db::snapshot_entry_history(
        tx,
        db::EntrySnapshotParams {
@@ -607,7 +461,7 @@ async fn snapshot_and_delete(
            version: row.version,
            action: "delete",
            tags: &row.tags,
-            metadata: &row.metadata,
+            metadata: &history_metadata,
        },
    )
    .await
@@ -646,12 +500,17 @@ async fn snapshot_and_delete(
        .execute(&mut **tx)
        .await?;

-    sqlx::query(
-        "DELETE FROM secrets s \
-         WHERE NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = s.id)",
-    )
-    .execute(&mut **tx)
-    .await?;
+    let secret_ids: Vec<Uuid> = fields.iter().map(|f| f.id).collect();
+    if !secret_ids.is_empty() {
+        sqlx::query(
+            "DELETE FROM secrets s \
+             WHERE s.id = ANY($1) \
+               AND NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = s.id)",
+        )
+        .bind(&secret_ids)
+        .execute(&mut **tx)
+        .await?;
+    }

    Ok(())
 }
@@ -659,280 +518,153 @@ async fn snapshot_and_delete(
 #[cfg(test)]
 mod tests {
    use super::*;
-    use serde_json::json;
+    use sqlx::PgPool;

    async fn maybe_test_pool() -> Option<PgPool> {
        let Ok(url) = std::env::var("SECRETS_DATABASE_URL") else {
-            eprintln!("skip delete migration tests: SECRETS_DATABASE_URL is not set");
+            eprintln!("skip delete tests: SECRETS_DATABASE_URL is not set");
            return None;
        };
        let Ok(pool) = PgPool::connect(&url).await else {
-            eprintln!("skip delete migration tests: cannot connect to database");
+            eprintln!("skip delete tests: cannot connect to database");
            return None;
        };
        if let Err(e) = crate::db::migrate(&pool).await {
-            eprintln!("skip delete migration tests: migrate failed: {e}");
+            eprintln!("skip delete tests: migrate failed: {e}");
            return None;
        }
        Some(pool)
    }

-    async fn insert_entry(
-        pool: &PgPool,
-        id: Uuid,
-        user_id: Uuid,
-        folder: &str,
-        entry_type: &str,
-        name: &str,
-        metadata: serde_json::Value,
-    ) -> Result<()> {
+    async fn cleanup_single_user_rows(pool: &PgPool, marker: &str) -> Result<()> {
        sqlx::query(
-            "INSERT INTO entries (id, user_id, folder, type, name, notes, tags, metadata, version) \
-             VALUES ($1, $2, $3, $4, $5, '', ARRAY[]::text[], $6, 1)",
+            "DELETE FROM entries WHERE user_id IS NULL AND (name LIKE $1 OR folder LIKE $1)",
        )
-        .bind(id)
-        .bind(user_id)
-        .bind(folder)
-        .bind(entry_type)
-        .bind(name)
-        .bind(metadata)
+        .bind(format!("%{marker}%"))
+        .execute(pool)
+        .await?;
+        sqlx::query(
+            "DELETE FROM secrets WHERE user_id IS NULL AND name LIKE $1 \
+             AND NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = secrets.id)",
+        )
+        .bind(format!("%{marker}%"))
        .execute(pool)
        .await?;
        Ok(())
    }

-    async fn insert_secret_for_entry(
-        pool: &PgPool,
-        user_id: Uuid,
-        entry_id: Uuid,
-        name: &str,
-        secret_type: &str,
-        encrypted: Vec<u8>,
-    ) -> Result<()> {
-        let secret_id: Uuid = sqlx::query_scalar(
-            "INSERT INTO secrets (user_id, name, type, encrypted) VALUES ($1, $2, $3, $4) RETURNING id",
-        )
-        .bind(user_id)
-        .bind(name)
-        .bind(secret_type)
-        .bind(encrypted)
-        .fetch_one(pool)
-        .await?;
-        sqlx::query("INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2)")
-            .bind(entry_id)
-            .bind(secret_id)
-            .execute(pool)
-            .await?;
-        Ok(())
-    }
-
    #[tokio::test]
-    async fn delete_shared_key_dry_run_reports_migration_without_writes() -> Result<()> {
+    async fn delete_dry_run_reports_matching_entry_without_writes() -> Result<()> {
        let Some(pool) = maybe_test_pool().await else {
            return Ok(());
        };
+        let suffix = Uuid::from_u128(rand::random()).to_string();
+        let marker = format!("delete_dry_{}", &suffix[..8]);
+        let entry_name = format!("{}_entry", marker);

-        let user_id = Uuid::from_u128(rand::random());
-        let key_id = Uuid::from_u128(rand::random());
-        let ref_a = Uuid::from_u128(rand::random());
-        let ref_b = Uuid::from_u128(rand::random());
+        cleanup_single_user_rows(&pool, &marker).await?;

-        insert_entry(
-            &pool,
-            key_id,
-            user_id,
-            "kfolder",
-            "key",
-            "shared-key",
-            json!({}),
-        )
-        .await?;
-        insert_secret_for_entry(&pool, user_id, key_id, "pem", "pem", vec![1_u8, 2, 3]).await?;
-
-        insert_entry(
-            &pool,
-            ref_a,
-            user_id,
-            "afolder",
-            "server",
-            "srv-a",
-            json!({"key_ref":"kfolder/shared-key"}),
-        )
-        .await?;
-        insert_entry(
-            &pool,
-            ref_b,
-            user_id,
-            "bfolder",
-            "server",
-            "srv-b",
-            json!({"key_ref":"shared-key"}),
+        sqlx::query(
+            "INSERT INTO entries (user_id, folder, type, name, notes, tags, metadata) \
+             VALUES (NULL, $1, 'service', $2, '', '{}', '{}')",
        )
+        .bind(&marker)
+        .bind(&entry_name)
+        .execute(&pool)
        .await?;

        let result = run(
            &pool,
            DeleteParams {
-                name: Some("shared-key"),
-                folder: Some("kfolder"),
+                name: Some(&entry_name),
+                folder: Some(&marker),
                entry_type: None,
                dry_run: true,
-                user_id: Some(user_id),
+                user_id: None,
            },
        )
        .await?;

        assert!(result.dry_run);
        assert_eq!(result.deleted.len(), 1);
-        assert_eq!(result.migrated.len(), 2);
+        assert_eq!(result.deleted[0].name, entry_name);

-        let key_exists: bool = sqlx::query_scalar(
-            "SELECT EXISTS(SELECT 1 FROM entries WHERE id = $1 AND user_id = $2)",
+        let still_exists: bool = sqlx::query_scalar(
+            "SELECT EXISTS(SELECT 1 FROM entries WHERE user_id IS NULL AND folder = $1 AND name = $2)",
        )
-        .bind(key_id)
-        .bind(user_id)
+        .bind(&marker)
+        .bind(&entry_name)
        .fetch_one(&pool)
        .await?;
-        assert!(key_exists);
+        assert!(still_exists);

-        let ref_a_key_ref: Option<String> =
-            sqlx::query_scalar("SELECT metadata->>'key_ref' FROM entries WHERE id = $1")
-                .bind(ref_a)
-                .fetch_one(&pool)
-                .await?;
-        let ref_b_key_ref: Option<String> =
-            sqlx::query_scalar("SELECT metadata->>'key_ref' FROM entries WHERE id = $1")
-                .bind(ref_b)
-                .fetch_one(&pool)
-                .await?;
-        assert_eq!(ref_a_key_ref.as_deref(), Some("kfolder/shared-key"));
-        assert_eq!(ref_b_key_ref.as_deref(), Some("shared-key"));
-
-        sqlx::query("DELETE FROM entries WHERE user_id = $1")
-            .bind(user_id)
-            .execute(&pool)
-            .await?;
+        cleanup_single_user_rows(&pool, &marker).await?;
        Ok(())
    }

    #[tokio::test]
-    async fn delete_shared_key_auto_migrates_single_copy_and_redirects_refs() -> Result<()> {
+    async fn delete_by_id_removes_entry_and_orphan_secret() -> Result<()> {
        let Some(pool) = maybe_test_pool().await else {
            return Ok(());
        };
-
+        let suffix = Uuid::from_u128(rand::random()).to_string();
+        let marker = format!("delete_id_{}", &suffix[..8]);
        let user_id = Uuid::from_u128(rand::random());
-        let key_id = Uuid::from_u128(rand::random());
-        let ref_a = Uuid::from_u128(rand::random());
-        let ref_b = Uuid::from_u128(rand::random());
-        let ref_c = Uuid::from_u128(rand::random());
+        let entry_name = format!("{}_entry", marker);
+        let secret_name = format!("{}_secret", marker);

-        insert_entry(
-            &pool,
-            key_id,
-            user_id,
-            "kfolder",
-            "key",
-            "shared-key",
-            json!({}),
-        )
-        .await?;
-        insert_secret_for_entry(&pool, user_id, key_id, "pem", "pem", vec![7_u8, 8, 9]).await?;
-
-        // owner candidate (sorted first by folder)
-        insert_entry(
-            &pool,
-            ref_a,
-            user_id,
-            "afolder",
-            "server",
-            "srv-a",
-            json!({"key_ref":"kfolder/shared-key"}),
-        )
-        .await?;
-        insert_entry(
-            &pool,
-            ref_b,
-            user_id,
-            "bfolder",
-            "server",
-            "srv-b",
-            json!({"key_ref":"shared-key"}),
-        )
-        .await?;
-        insert_entry(
-            &pool,
-            ref_c,
-            user_id,
-            "cfolder",
-            "service",
-            "svc-c",
-            json!({"key_ref":"kfolder/shared-key"}),
-        )
-        .await?;
-
-        let result = run(
-            &pool,
-            DeleteParams {
-                name: Some("shared-key"),
-                folder: Some("kfolder"),
-                entry_type: None,
-                dry_run: false,
-                user_id: Some(user_id),
-            },
-        )
-        .await?;
-
-        assert!(!result.dry_run);
-        assert_eq!(result.deleted.len(), 1);
-        assert_eq!(result.migrated.len(), 3);
-
-        let key_exists: bool = sqlx::query_scalar(
-            "SELECT EXISTS(SELECT 1 FROM entries WHERE id = $1 AND user_id = $2)",
-        )
-        .bind(key_id)
-        .bind(user_id)
-        .fetch_one(&pool)
-        .await?;
-        assert!(!key_exists);
-
-        let owner_key_ref: Option<String> =
-            sqlx::query_scalar("SELECT metadata->>'key_ref' FROM entries WHERE id = $1")
-                .bind(ref_a)
-                .fetch_one(&pool)
-                .await?;
-        let ref_b_key_ref: Option<String> =
-            sqlx::query_scalar("SELECT metadata->>'key_ref' FROM entries WHERE id = $1")
-                .bind(ref_b)
-                .fetch_one(&pool)
-                .await?;
-        let ref_c_key_ref: Option<String> =
-            sqlx::query_scalar("SELECT metadata->>'key_ref' FROM entries WHERE id = $1")
-                .bind(ref_c)
-                .fetch_one(&pool)
-                .await?;
-
-        assert_eq!(owner_key_ref, None);
-        assert_eq!(ref_b_key_ref.as_deref(), Some("afolder/srv-a"));
-        assert_eq!(ref_c_key_ref.as_deref(), Some("afolder/srv-a"));
-
-        let owner_has_copied: bool = sqlx::query_scalar(
-            "SELECT EXISTS( \
-                SELECT 1 \
-                FROM entry_secrets es \
-                JOIN secrets s ON s.id = es.secret_id \
-                WHERE es.entry_id = $1 AND s.name = 'pem' \
-            )",
-        )
-        .bind(ref_a)
-        .fetch_one(&pool)
-        .await?;
-        assert!(owner_has_copied);
-
-        sqlx::query("DELETE FROM entries WHERE user_id = $1")
+        sqlx::query("DELETE FROM entries WHERE user_id = $1 AND folder = $2")
            .bind(user_id)
+            .bind(&marker)
            .execute(&pool)
            .await?;
+        sqlx::query("DELETE FROM secrets WHERE user_id = $1 AND name = $2")
+            .bind(user_id)
+            .bind(&secret_name)
+            .execute(&pool)
+            .await?;
+
+        let entry_id: Uuid = sqlx::query_scalar(
+            "INSERT INTO entries (user_id, folder, type, name, notes, tags, metadata) \
+             VALUES ($1, $2, 'service', $3, '', '{}', '{}') RETURNING id",
+        )
+        .bind(user_id)
+        .bind(&marker)
+        .bind(&entry_name)
+        .fetch_one(&pool)
+        .await?;
+        let secret_id: Uuid = sqlx::query_scalar(
+            "INSERT INTO secrets (user_id, name, type, encrypted) VALUES ($1, $2, 'text', $3) RETURNING id",
+        )
+        .bind(user_id)
+        .bind(&secret_name)
+        .bind(vec![1_u8, 2, 3])
+        .fetch_one(&pool)
+        .await?;
+        sqlx::query("INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2)")
+            .bind(entry_id)
+            .bind(secret_id)
+            .execute(&pool)
+            .await?;
+
+        let result = delete_by_id(&pool, entry_id, user_id).await?;
+        assert!(!result.dry_run);
+        assert_eq!(result.deleted.len(), 1);
+        assert_eq!(result.deleted[0].name, entry_name);
+
+        let entry_exists: bool =
+            sqlx::query_scalar("SELECT EXISTS(SELECT 1 FROM entries WHERE id = $1)")
+                .bind(entry_id)
+                .fetch_one(&pool)
+                .await?;
+        let secret_exists: bool =
+            sqlx::query_scalar("SELECT EXISTS(SELECT 1 FROM secrets WHERE id = $1)")
+                .bind(secret_id)
+                .fetch_one(&pool)
+                .await?;
+        assert!(!entry_exists);
+        assert!(!secret_exists);
+
        Ok(())
    }
 }
--- a/crates/secrets-core/src/service/env_map.rs
+++ b/crates/secrets-core/src/service/env_map.rs
@@ -40,7 +40,7 @@ async fn build_entry_env_map(
    only_fields: &[String],
    prefix: &str,
    master_key: &[u8; 32],
-    user_id: Option<Uuid>,
+    _user_id: Option<Uuid>,
 ) -> Result<HashMap<String, String>> {
    let entry_ids = vec![entry.id];
    let secrets_map = fetch_secrets_for_entries(pool, &entry_ids).await?;
@@ -68,44 +68,6 @@ async fn build_entry_env_map(
        map.insert(key, json_to_env_string(&decrypted));
    }

-    // Resolve key_ref. Supported formats: "name" or "folder/name".
-    if let Some(key_ref) = entry.metadata.get("key_ref").and_then(|v| v.as_str()) {
-        let (ref_folder, ref_name) = if let Some((f, n)) = key_ref.split_once('/') {
-            (Some(f), n)
-        } else {
-            (None, key_ref)
-        };
-        let key_entries =
-            fetch_entries(pool, ref_folder, None, Some(ref_name), &[], None, user_id).await?;
-
-        if key_entries.len() > 1 {
-            anyhow::bail!(
-                "key_ref '{}' matched {} entries; qualify with folder/name to resolve the ambiguity",
-                key_ref,
-                key_entries.len()
-            );
-        }
-
-        if let Some(key_entry) = key_entries.first() {
-            let key_ids = vec![key_entry.id];
-            let key_fields_map = fetch_secrets_for_entries(pool, &key_ids).await?;
-            let empty = vec![];
-            let key_fields = key_fields_map.get(&key_entry.id).unwrap_or(&empty);
-            let key_prefix = env_prefix(key_entry, prefix);
-            for f in key_fields {
-                let decrypted = crypto::decrypt_json(master_key, &f.encrypted)?;
-                let key_var = format!(
-                    "{}_{}",
-                    key_prefix,
-                    f.name.to_uppercase().replace(['-', '.'], "_")
-                );
-                map.insert(key_var, json_to_env_string(&decrypted));
-            }
-        } else {
-            tracing::warn!(key_ref, ?user_id, "key_ref target not found");
-        }
-    }
-
    Ok(map)
 }

--- a/crates/secrets-core/src/service/history.rs
+++ b/crates/secrets-core/src/service/history.rs
@@ -31,8 +31,11 @@ pub async fn run(
    let entry = resolve_entry(pool, name, folder, user_id).await?;

    let rows: Vec<Row> = sqlx::query_as(
-        "SELECT version, action, created_at FROM entries_history \
-         WHERE entry_id = $1 ORDER BY id DESC LIMIT $2",
+        "SELECT DISTINCT ON (version) version, action, created_at \
+         FROM entries_history \
+         WHERE entry_id = $1 \
+         ORDER BY version DESC, id DESC \
+         LIMIT $2",
    )
    .bind(entry.id)
    .bind(limit as i64)
--- a/crates/secrets-core/src/service/import.rs
+++ b/crates/secrets-core/src/service/import.rs
@@ -54,7 +54,13 @@ pub async fn run(
        .bind(params.user_id)
        .fetch_one(pool)
        .await
-        .unwrap_or(false);
+        .map_err(|e| {
+            anyhow::anyhow!(
+                "Failed to check entry existence for '{}': {}",
+                entry.name,
+                e
+            )
+        })?;

        if exists && !params.force {
            return Err(anyhow::anyhow!(
@@ -85,6 +91,7 @@ pub async fn run(
                tags: &entry.tags,
                meta_entries: &meta_entries,
                secret_entries: &secret_entries,
+                secret_types: &Default::default(),
                link_secret_names: &[],
                user_id: params.user_id,
            },
--- a/crates/secrets-core/src/service/rollback.rs
+++ b/crates/secrets-core/src/service/rollback.rs
@@ -1,3 +1,5 @@
+use std::collections::HashSet;
+
 use anyhow::Result;
 use serde_json::Value;
 use sqlx::PgPool;
@@ -122,7 +124,7 @@ pub async fn run(
        sqlx::query_as(
            "SELECT folder, type, version, action, tags, metadata \
             FROM entries_history \
-             WHERE entry_id = $1 AND version = $2 ORDER BY id DESC LIMIT 1",
+             WHERE entry_id = $1 AND version = $2 ORDER BY id ASC LIMIT 1",
        )
        .bind(entry_id)
        .bind(ver)
@@ -149,6 +151,9 @@ pub async fn run(
        )
    })?;

+    let snap_secret_snapshot = db::entry_secret_snapshot_from_metadata(&snap.metadata);
+    let snap_metadata = db::strip_secret_snapshot_from_metadata(&snap.metadata);
+
    let _ = master_key;

    let mut tx = pool.begin().await?;
@@ -176,6 +181,15 @@ pub async fn run(
    .await?;

    let live_entry_id = if let Some(ref lr) = live {
+        let history_metadata =
+            match db::metadata_with_secret_snapshot(&mut tx, lr.id, &lr.metadata).await {
+                Ok(v) => v,
+                Err(e) => {
+                    tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                    lr.metadata.clone()
+                }
+            };
+
        if let Err(e) = db::snapshot_entry_history(
            &mut tx,
            db::EntrySnapshotParams {
@@ -187,7 +201,7 @@ pub async fn run(
                version: lr.version,
                action: "rollback",
                tags: &lr.tags,
-                metadata: &lr.metadata,
+                metadata: &history_metadata,
            },
        )
        .await
@@ -228,11 +242,13 @@ pub async fn run(
        }

        sqlx::query(
-            "UPDATE entries SET tags = $1, metadata = $2, version = version + 1, \
-             updated_at = NOW() WHERE id = $3",
+            "UPDATE entries SET folder = $1, type = $2, tags = $3, metadata = $4, version = version + 1, \
+             updated_at = NOW() WHERE id = $5",
        )
+        .bind(&snap.folder)
+        .bind(&snap.entry_type)
        .bind(&snap.tags)
-        .bind(&snap.metadata)
+        .bind(&snap_metadata)
        .bind(lr.id)
        .execute(&mut *tx)
        .await?;
@@ -250,7 +266,7 @@ pub async fn run(
            .bind(&snap.entry_type)
            .bind(name)
            .bind(&snap.tags)
-            .bind(&snap.metadata)
+            .bind(&snap_metadata)
            .bind(snap.version)
            .fetch_one(&mut *tx)
            .await?
@@ -264,16 +280,16 @@ pub async fn run(
            .bind(&snap.entry_type)
            .bind(name)
            .bind(&snap.tags)
-            .bind(&snap.metadata)
+            .bind(&snap_metadata)
            .bind(snap.version)
            .fetch_one(&mut *tx)
            .await?
        }
    };

-    // In N:N mode, rollback restores entry metadata/tags only.
-    // Secret snapshots are kept for audit but secret linkage/content is not rewritten here.
-    let _ = live_entry_id;
+    if let Some(secret_snapshot) = snap_secret_snapshot {
+        restore_entry_secrets(&mut tx, live_entry_id, user_id, &secret_snapshot).await?;
+    }

    crate::audit::log_tx(
        &mut tx,
@@ -298,3 +314,144 @@ pub async fn run(
        restored_version: snap.version,
    })
 }
+
+async fn restore_entry_secrets(
+    tx: &mut sqlx::Transaction<'_, sqlx::Postgres>,
+    entry_id: Uuid,
+    user_id: Option<Uuid>,
+    snapshot: &[db::EntrySecretSnapshot],
+) -> Result<()> {
+    #[derive(sqlx::FromRow)]
+    struct LinkedSecret {
+        id: Uuid,
+        name: String,
+        encrypted: Vec<u8>,
+    }
+
+    let linked: Vec<LinkedSecret> = sqlx::query_as(
+        "SELECT s.id, s.name, s.encrypted \
+         FROM entry_secrets es \
+         JOIN secrets s ON s.id = es.secret_id \
+         WHERE es.entry_id = $1",
+    )
+    .bind(entry_id)
+    .fetch_all(&mut **tx)
+    .await?;
+
+    let target_names: HashSet<&str> = snapshot.iter().map(|s| s.name.as_str()).collect();
+
+    for s in &linked {
+        if target_names.contains(s.name.as_str()) {
+            continue;
+        }
+        if let Err(e) = db::snapshot_secret_history(
+            tx,
+            db::SecretSnapshotParams {
+                secret_id: s.id,
+                name: &s.name,
+                encrypted: &s.encrypted,
+                action: "rollback",
+            },
+        )
+        .await
+        {
+            tracing::warn!(error = %e, "failed to snapshot secret before rollback unlink");
+        }
+
+        sqlx::query("DELETE FROM entry_secrets WHERE entry_id = $1 AND secret_id = $2")
+            .bind(entry_id)
+            .bind(s.id)
+            .execute(&mut **tx)
+            .await?;
+
+        sqlx::query(
+            "DELETE FROM secrets s \
+             WHERE s.id = $1 \
+               AND NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = s.id)",
+        )
+        .bind(s.id)
+        .execute(&mut **tx)
+        .await?;
+    }
+
+    for snap in snapshot {
+        let encrypted = ::hex::decode(&snap.encrypted_hex).map_err(|e| {
+            anyhow::anyhow!("invalid secret snapshot data for '{}': {}", snap.name, e)
+        })?;
+
+        #[derive(sqlx::FromRow)]
+        struct ExistingSecret {
+            id: Uuid,
+            encrypted: Vec<u8>,
+        }
+
+        let existing: Option<ExistingSecret> = if let Some(uid) = user_id {
+            sqlx::query_as("SELECT id, encrypted FROM secrets WHERE user_id = $1 AND name = $2")
+                .bind(uid)
+                .bind(&snap.name)
+                .fetch_optional(&mut **tx)
+                .await?
+        } else {
+            sqlx::query_as("SELECT id, encrypted FROM secrets WHERE user_id IS NULL AND name = $1")
+                .bind(&snap.name)
+                .fetch_optional(&mut **tx)
+                .await?
+        };
+
+        let secret_id = if let Some(ex) = existing {
+            if ex.encrypted != encrypted
+                && let Err(e) = db::snapshot_secret_history(
+                    tx,
+                    db::SecretSnapshotParams {
+                        secret_id: ex.id,
+                        name: &snap.name,
+                        encrypted: &ex.encrypted,
+                        action: "rollback",
+                    },
+                )
+                .await
+            {
+                tracing::warn!(error = %e, "failed to snapshot secret before rollback restore");
+            }
+            sqlx::query(
+                "UPDATE secrets SET type = $1, encrypted = $2, version = version + 1, updated_at = NOW() \
+                 WHERE id = $3",
+            )
+            .bind(&snap.secret_type)
+            .bind(&encrypted)
+            .bind(ex.id)
+            .execute(&mut **tx)
+            .await?;
+            ex.id
+        } else if let Some(uid) = user_id {
+            sqlx::query_scalar(
+                "INSERT INTO secrets (user_id, name, type, encrypted) VALUES ($1, $2, $3, $4) RETURNING id",
+            )
+            .bind(uid)
+            .bind(&snap.name)
+            .bind(&snap.secret_type)
+            .bind(&encrypted)
+            .fetch_one(&mut **tx)
+            .await?
+        } else {
+            sqlx::query_scalar(
+                "INSERT INTO secrets (user_id, name, type, encrypted) VALUES (NULL, $1, $2, $3) RETURNING id",
+            )
+            .bind(&snap.name)
+            .bind(&snap.secret_type)
+            .bind(&encrypted)
+            .fetch_one(&mut **tx)
+            .await?
+        };
+
+        sqlx::query(
+            "INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2) ON CONFLICT DO NOTHING",
+        )
+        .bind(entry_id)
+        .bind(secret_id)
+        .execute(&mut **tx)
+        .await?;
+    }
+
+    Ok(())
+}
--- a/crates/secrets-core/src/service/search.rs
+++ b/crates/secrets-core/src/service/search.rs
@@ -8,10 +8,23 @@ use crate::models::{Entry, SecretField};

 pub const FETCH_ALL_LIMIT: u32 = 100_000;

+/// Build an ILIKE pattern for fuzzy matching, escaping `%` and `_` literals.
+pub fn ilike_pattern(value: &str) -> String {
+    format!(
+        "%{}%",
+        value
+            .replace('\\', "\\\\")
+            .replace('%', "\\%")
+            .replace('_', "\\_")
+    )
+}
+
 pub struct SearchParams<'a> {
    pub folder: Option<&'a str>,
    pub entry_type: Option<&'a str>,
    pub name: Option<&'a str>,
+    /// Fuzzy match on `entries.name` only (ILIKE with escaped `%`/`_`).
+    pub name_query: Option<&'a str>,
    pub tags: &'a [String],
    pub query: Option<&'a str>,
    pub sort: &'a str,
@@ -51,11 +64,15 @@ pub async fn count_entries(pool: &PgPool, a: &SearchParams<'_>) -> Result<i64> {
    if let Some(v) = a.name {
        q = q.bind(v);
    }
+    if let Some(v) = a.name_query {
+        let pattern = ilike_pattern(v);
+        q = q.bind(pattern);
+    }
    for tag in a.tags {
        q = q.bind(tag);
    }
    if let Some(v) = a.query {
-        let pattern = format!("%{}%", v.replace('%', "\\%").replace('_', "\\_"));
+        let pattern = ilike_pattern(v);
        q = q.bind(pattern);
    }
    let n = q.fetch_one(pool).await?;
@@ -86,6 +103,10 @@ fn entry_where_clause_and_next_idx(a: &SearchParams<'_>) -> (String, i32) {
        conditions.push(format!("name = ${}", idx));
        idx += 1;
    }
+    if a.name_query.is_some() {
+        conditions.push(format!("name ILIKE ${} ESCAPE '\\'", idx));
+        idx += 1;
+    }
    if !a.tags.is_empty() {
        let placeholders: Vec<String> = a
            .tags
@@ -135,6 +156,7 @@ pub async fn run(pool: &PgPool, params: SearchParams<'_>) -> Result<SearchResult
 }

 /// Fetch entries matching the given filters — returns all matching entries up to FETCH_ALL_LIMIT.
+#[allow(clippy::too_many_arguments)]
 pub async fn fetch_entries(
    pool: &PgPool,
    folder: Option<&str>,
@@ -148,6 +170,7 @@ pub async fn fetch_entries(
        folder,
        entry_type,
        name,
+        name_query: None,
        tags,
        query,
        sort: "name",
@@ -189,11 +212,15 @@ async fn fetch_entries_paged(pool: &PgPool, a: &SearchParams<'_>) -> Result<Vec<
    if let Some(v) = a.name {
        q = q.bind(v);
    }
+    if let Some(v) = a.name_query {
+        let pattern = ilike_pattern(v);
+        q = q.bind(pattern);
+    }
    for tag in a.tags {
        q = q.bind(tag);
    }
    if let Some(v) = a.query {
-        let pattern = format!("%{}%", v.replace('%', "\\%").replace('_', "\\_"));
+        let pattern = ilike_pattern(v);
        q = q.bind(pattern);
    }
    q = q.bind(a.limit as i64).bind(a.offset as i64);
@@ -384,3 +411,13 @@ impl EntrySecretRow {
        }
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn ilike_pattern_escapes_backslash_percent_and_underscore() {
+        assert_eq!(ilike_pattern(r"hello\_100%"), r"%hello\\\_100\%%");
+    }
+}
--- a/crates/secrets-core/src/service/update.rs
+++ b/crates/secrets-core/src/service/update.rs
@@ -5,10 +5,11 @@ use uuid::Uuid;

 use crate::crypto;
 use crate::db;
+use crate::error::{AppError, DbErrorContext};
 use crate::models::{EntryRow, EntryWriteRow};
 use crate::service::add::{
-    collect_field_paths, collect_key_paths, flatten_json_fields, infer_secret_type, insert_path,
-    parse_key_path, parse_kv, remove_path,
+    collect_field_paths, collect_key_paths, flatten_json_fields, insert_path, parse_key_path,
+    parse_kv, remove_path,
 };

 #[derive(Debug, serde::Serialize)]
@@ -23,6 +24,8 @@ pub struct UpdateResult {
    pub remove_meta: Vec<String>,
    pub secret_keys: Vec<String>,
    pub remove_secrets: Vec<String>,
+    pub linked_secrets: Vec<String>,
+    pub unlinked_secrets: Vec<String>,
 }

 pub struct UpdateParams<'a> {
@@ -35,7 +38,10 @@ pub struct UpdateParams<'a> {
    pub meta_entries: &'a [String],
    pub remove_meta: &'a [String],
    pub secret_entries: &'a [String],
+    pub secret_types: &'a std::collections::HashMap<String, String>,
    pub remove_secrets: &'a [String],
+    pub link_secret_names: &'a [String],
+    pub unlink_secret_names: &'a [String],
    pub user_id: Option<Uuid>,
 }

@@ -90,10 +96,7 @@ pub async fn run(
    let row = match rows.len() {
        0 => {
            tx.rollback().await?;
-            anyhow::bail!(
-                "Not found: '{}'. Use `add` to create it first.",
-                params.name
-            )
+            return Err(AppError::NotFoundEntry.into());
        }
        1 => rows.into_iter().next().unwrap(),
        _ => {
@@ -109,6 +112,15 @@ pub async fn run(
        }
    };

+    let history_metadata =
+        match db::metadata_with_secret_snapshot(&mut tx, row.id, &row.metadata).await {
+            Ok(v) => v,
+            Err(e) => {
+                tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                row.metadata.clone()
+            }
+        };
+
    if let Err(e) = db::snapshot_entry_history(
        &mut tx,
        db::EntrySnapshotParams {
@@ -120,7 +132,7 @@ pub async fn run(
            version: row.version,
            action: "update",
            tags: &row.tags,
-            metadata: &row.metadata,
+            metadata: &history_metadata,
        },
    )
    .await
@@ -167,10 +179,7 @@ pub async fn run(

    if result.rows_affected() == 0 {
        tx.rollback().await?;
-        anyhow::bail!(
-            "Concurrent modification detected for '{}'. Please retry.",
-            params.name
-        );
+        return Err(AppError::ConcurrentModification.into());
    }

    for entry in params.secret_entries {
@@ -224,15 +233,21 @@ pub async fn run(
                .execute(&mut *tx)
                .await?;
            } else {
+                let secret_type = params
+                    .secret_types
+                    .get(field_name)
+                    .map(|s| s.as_str())
+                    .unwrap_or("text");
                let secret_id: Uuid = sqlx::query_scalar(
                    "INSERT INTO secrets (user_id, name, type, encrypted) VALUES ($1, $2, $3, $4) RETURNING id",
                )
                .bind(params.user_id)
-                .bind(field_name)
-                .bind(infer_secret_type(field_name))
+                .bind(field_name.to_string())
+                .bind(secret_type)
                .bind(&encrypted)
                .fetch_one(&mut *tx)
-                .await?;
+                .await
+                .map_err(|e| AppError::from_db_error(e, DbErrorContext::secret_name(field_name)))?;
                sqlx::query("INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2)")
                    .bind(row.id)
                    .bind(secret_id)
@@ -292,6 +307,101 @@ pub async fn run(
        }
    }

+    // Link existing secrets by name
+    let mut linked_secrets = Vec::new();
+    for link_name in params.link_secret_names {
+        let link_name = link_name.trim();
+        if link_name.is_empty() {
+            anyhow::bail!("link_secret_names contains an empty name");
+        }
+        let secret_ids: Vec<Uuid> = if let Some(uid) = params.user_id {
+            sqlx::query_scalar("SELECT id FROM secrets WHERE user_id = $1 AND name = $2")
+                .bind(uid)
+                .bind(link_name)
+                .fetch_all(&mut *tx)
+                .await?
+        } else {
+            sqlx::query_scalar("SELECT id FROM secrets WHERE user_id IS NULL AND name = $1")
+                .bind(link_name)
+                .fetch_all(&mut *tx)
+                .await?
+        };
+
+        match secret_ids.len() {
+            0 => anyhow::bail!("Not found: secret named '{}'", link_name),
+            1 => {
+                sqlx::query(
+                    "INSERT INTO entry_secrets (entry_id, secret_id) VALUES ($1, $2) ON CONFLICT DO NOTHING",
+                )
+                .bind(row.id)
+                .bind(secret_ids[0])
+                .execute(&mut *tx)
+                .await?;
+                linked_secrets.push(link_name.to_string());
+            }
+            n => anyhow::bail!(
+                "Ambiguous: {} secrets named '{}' found. Please deduplicate names first.",
+                n,
+                link_name
+            ),
+        }
+    }
+
+    // Unlink secrets by name
+    let mut unlinked_secrets = Vec::new();
+    for unlink_name in params.unlink_secret_names {
+        let unlink_name = unlink_name.trim();
+        if unlink_name.is_empty() {
+            continue;
+        }
+
+        #[derive(sqlx::FromRow)]
+        struct SecretToUnlink {
+            id: Uuid,
+            encrypted: Vec<u8>,
+        }
+        let secret: Option<SecretToUnlink> = sqlx::query_as(
+            "SELECT s.id, s.encrypted \
+             FROM entry_secrets es \
+             JOIN secrets s ON s.id = es.secret_id \
+             WHERE es.entry_id = $1 AND s.name = $2",
+        )
+        .bind(row.id)
+        .bind(unlink_name)
+        .fetch_optional(&mut *tx)
+        .await?;
+
+        if let Some(s) = secret {
+            if let Err(e) = db::snapshot_secret_history(
+                &mut tx,
+                db::SecretSnapshotParams {
+                    secret_id: s.id,
+                    name: unlink_name,
+                    encrypted: &s.encrypted,
+                    action: "delete",
+                },
+            )
+            .await
+            {
+                tracing::warn!(error = %e, "failed to snapshot secret field history before unlink");
+            }
+            sqlx::query("DELETE FROM entry_secrets WHERE entry_id = $1 AND secret_id = $2")
+                .bind(row.id)
+                .bind(s.id)
+                .execute(&mut *tx)
+                .await?;
+            sqlx::query(
+                "DELETE FROM secrets s \
+                 WHERE s.id = $1 \
+                   AND NOT EXISTS (SELECT 1 FROM entry_secrets es WHERE es.secret_id = s.id)",
+            )
+            .bind(s.id)
+            .execute(&mut *tx)
+            .await?;
+            unlinked_secrets.push(unlink_name.to_string());
+        }
+    }
+
    let meta_keys = collect_key_paths(params.meta_entries)?;
    let remove_meta_keys = collect_field_paths(params.remove_meta)?;
    let secret_keys = collect_key_paths(params.secret_entries)?;
@@ -301,8 +411,8 @@ pub async fn run(
        &mut tx,
        params.user_id,
        "update",
-        "",
-        "",
+        &row.folder,
+        &row.entry_type,
        params.name,
        serde_json::json!({
            "add_tags": params.add_tags,
@@ -311,6 +421,8 @@ pub async fn run(
            "remove_meta": remove_meta_keys,
            "secret_keys": secret_keys,
            "remove_secrets": remove_secret_keys,
+            "linked_secrets": linked_secrets,
+            "unlinked_secrets": unlinked_secrets,
        }),
    )
    .await;
@@ -327,6 +439,8 @@ pub async fn run(
        remove_meta: remove_meta_keys,
        secret_keys,
        remove_secrets: remove_secret_keys,
+        linked_secrets,
+        unlinked_secrets,
    })
 }

@@ -347,13 +461,13 @@ pub async fn update_fields_by_id(
    user_id: Uuid,
    params: UpdateEntryFieldsByIdParams<'_>,
 ) -> Result<()> {
-    if params.folder.len() > 128 {
+    if params.folder.chars().count() > 128 {
        anyhow::bail!("folder must be at most 128 characters");
    }
-    if params.entry_type.len() > 64 {
+    if params.entry_type.chars().count() > 64 {
        anyhow::bail!("type must be at most 64 characters");
    }
-    if params.name.len() > 256 {
+    if params.name.chars().count() > 256 {
        anyhow::bail!("name must be at most 256 characters");
    }

@@ -372,10 +486,19 @@ pub async fn update_fields_by_id(
        Some(r) => r,
        None => {
            tx.rollback().await?;
-            anyhow::bail!("Entry not found");
+            return Err(AppError::NotFoundEntry.into());
        }
    };

+    let history_metadata =
+        match db::metadata_with_secret_snapshot(&mut tx, row.id, &row.metadata).await {
+            Ok(v) => v,
+            Err(e) => {
+                tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                row.metadata.clone()
+            }
+        };
+
    if let Err(e) = db::snapshot_entry_history(
        &mut tx,
        db::EntrySnapshotParams {
@@ -387,7 +510,7 @@ pub async fn update_fields_by_id(
            version: row.version,
            action: "update",
            tags: &row.tags,
-            metadata: &row.metadata,
+            metadata: &history_metadata,
        },
    )
    .await
@@ -395,13 +518,15 @@ pub async fn update_fields_by_id(
        tracing::warn!(error = %e, "failed to snapshot entry history before web update");
    }

+    let entry_type = params.entry_type.trim();
+
    let res = sqlx::query(
        "UPDATE entries SET folder = $1, type = $2, name = $3, notes = $4, tags = $5, metadata = $6, \
         version = version + 1, updated_at = NOW() \
         WHERE id = $7 AND version = $8",
    )
    .bind(params.folder)
-    .bind(params.entry_type)
+    .bind(entry_type)
    .bind(params.name)
    .bind(params.notes)
    .bind(params.tags)
@@ -414,16 +539,17 @@ pub async fn update_fields_by_id(
        if let sqlx::Error::Database(ref d) = e
            && d.code().as_deref() == Some("23505")
        {
-            return anyhow::anyhow!(
-                "An entry with this folder and name already exists for your account."
-            );
+            return AppError::ConflictEntryName {
+                folder: params.folder.to_string(),
+                name: params.name.to_string(),
+            };
        }
-        e.into()
+        AppError::Internal(e.into())
    })?;

    if res.rows_affected() == 0 {
        tx.rollback().await?;
-        anyhow::bail!("Concurrent modification detected. Please refresh and try again.");
+        return Err(AppError::ConcurrentModification.into());
    }

    crate::audit::log_tx(
@@ -431,7 +557,7 @@ pub async fn update_fields_by_id(
        Some(user_id),
        "update",
        params.folder,
-        params.entry_type,
+        entry_type,
        params.name,
        serde_json::json!({
            "source": "web",
--- a/crates/secrets-core/src/service/user.rs
+++ b/crates/secrets-core/src/service/user.rs
@@ -16,14 +16,17 @@ pub struct OAuthProfile {
 /// Find or create a user from an OAuth profile.
 /// Returns (user, is_new) where is_new indicates first-time registration.
 pub async fn find_or_create_user(pool: &PgPool, profile: OAuthProfile) -> Result<(User, bool)> {
-    // Check if this OAuth account already exists
+    // Use a transaction with FOR UPDATE to prevent TOCTOU race conditions
+    let mut tx = pool.begin().await?;
+
+    // Check if this OAuth account already exists (with row lock)
    let existing: Option<OauthAccount> = sqlx::query_as(
        "SELECT id, user_id, provider, provider_id, email, name, avatar_url, created_at \
-         FROM oauth_accounts WHERE provider = $1 AND provider_id = $2",
+         FROM oauth_accounts WHERE provider = $1 AND provider_id = $2 FOR UPDATE",
    )
    .bind(&profile.provider)
    .bind(&profile.provider_id)
-    .fetch_optional(pool)
+    .fetch_optional(&mut *tx)
    .await?;

    if let Some(oa) = existing {
@@ -32,8 +35,9 @@ pub async fn find_or_create_user(pool: &PgPool, profile: OAuthProfile) -> Result
             FROM users WHERE id = $1",
        )
        .bind(oa.user_id)
-        .fetch_one(pool)
+        .fetch_one(&mut *tx)
        .await?;
+        tx.commit().await?;
        return Ok((user, false));
    }

@@ -43,8 +47,6 @@ pub async fn find_or_create_user(pool: &PgPool, profile: OAuthProfile) -> Result
        .clone()
        .unwrap_or_else(|| profile.email.clone().unwrap_or_else(|| "User".to_string()));

-    let mut tx = pool.begin().await?;
-
    let user: User = sqlx::query_as(
        "INSERT INTO users (email, name, avatar_url) \
         VALUES ($1, $2, $3) \
@@ -125,13 +127,16 @@ pub async fn bind_oauth_account(
    user_id: Uuid,
    profile: OAuthProfile,
 ) -> Result<OauthAccount> {
-    // Check if this provider_id is already linked to someone else
+    // Use a transaction with FOR UPDATE to prevent TOCTOU race conditions
+    let mut tx = pool.begin().await?;
+
+    // Check if this provider_id is already linked to someone else (with row lock)
    let conflict: Option<(Uuid,)> = sqlx::query_as(
-        "SELECT user_id FROM oauth_accounts WHERE provider = $1 AND provider_id = $2",
+        "SELECT user_id FROM oauth_accounts WHERE provider = $1 AND provider_id = $2 FOR UPDATE",
    )
    .bind(&profile.provider)
    .bind(&profile.provider_id)
-    .fetch_optional(pool)
+    .fetch_optional(&mut *tx)
    .await?;

    if let Some((existing_user_id,)) = conflict {
@@ -148,11 +153,11 @@ pub async fn bind_oauth_account(
    }

    let existing_provider_for_user: Option<(String,)> = sqlx::query_as(
-        "SELECT provider_id FROM oauth_accounts WHERE user_id = $1 AND provider = $2",
+        "SELECT provider_id FROM oauth_accounts WHERE user_id = $1 AND provider = $2 FOR UPDATE",
    )
    .bind(user_id)
    .bind(&profile.provider)
-    .fetch_optional(pool)
+    .fetch_optional(&mut *tx)
    .await?;

    if existing_provider_for_user.is_some() {
@@ -174,9 +179,10 @@ pub async fn bind_oauth_account(
    .bind(&profile.email)
    .bind(&profile.name)
    .bind(&profile.avatar_url)
-    .fetch_one(pool)
+    .fetch_one(&mut *tx)
    .await?;

+    tx.commit().await?;
    Ok(account)
 }

@@ -194,10 +200,14 @@ pub async fn unbind_oauth_account(
        );
    }

-    let count: i64 = sqlx::query_scalar("SELECT COUNT(*) FROM oauth_accounts WHERE user_id = $1")
-        .bind(user_id)
-        .fetch_one(pool)
-        .await?;
+    let mut tx = pool.begin().await?;
+
+    let locked_accounts: Vec<(String,)> =
+        sqlx::query_as("SELECT provider FROM oauth_accounts WHERE user_id = $1 FOR UPDATE")
+            .bind(user_id)
+            .fetch_all(&mut *tx)
+            .await?;
+    let count = locked_accounts.len();

    if count <= 1 {
        anyhow::bail!("Cannot unbind the last OAuth account. Please link another account first.");
@@ -206,8 +216,87 @@ pub async fn unbind_oauth_account(
    sqlx::query("DELETE FROM oauth_accounts WHERE user_id = $1 AND provider = $2")
        .bind(user_id)
        .bind(provider)
-        .execute(pool)
+        .execute(&mut *tx)
        .await?;

+    tx.commit().await?;
+
    Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    async fn maybe_test_pool() -> Option<PgPool> {
+        let database_url = match std::env::var("SECRETS_DATABASE_URL") {
+            Ok(v) => v,
+            Err(_) => {
+                eprintln!("skip user service tests: SECRETS_DATABASE_URL not set");
+                return None;
+            }
+        };
+        let pool = match sqlx::PgPool::connect(&database_url).await {
+            Ok(pool) => pool,
+            Err(e) => {
+                eprintln!("skip user service tests: cannot connect to database: {e}");
+                return None;
+            }
+        };
+        if let Err(e) = crate::db::migrate(&pool).await {
+            eprintln!("skip user service tests: migrate failed: {e}");
+            return None;
+        }
+        Some(pool)
+    }
+
+    async fn cleanup_user_rows(pool: &PgPool, user_id: Uuid) -> Result<()> {
+        sqlx::query("DELETE FROM oauth_accounts WHERE user_id = $1")
+            .bind(user_id)
+            .execute(pool)
+            .await?;
+        sqlx::query("DELETE FROM users WHERE id = $1")
+            .bind(user_id)
+            .execute(pool)
+            .await?;
+        Ok(())
+    }
+
+    #[tokio::test]
+    async fn unbind_oauth_account_removes_only_requested_provider() -> Result<()> {
+        let Some(pool) = maybe_test_pool().await else {
+            return Ok(());
+        };
+        let user_id = Uuid::from_u128(rand::random());
+
+        cleanup_user_rows(&pool, user_id).await?;
+
+        sqlx::query("INSERT INTO users (id, name) VALUES ($1, '')")
+            .bind(user_id)
+            .execute(&pool)
+            .await?;
+        sqlx::query(
+            "INSERT INTO oauth_accounts (user_id, provider, provider_id, email, name, avatar_url) \
+             VALUES ($1, 'google', $2, NULL, NULL, NULL), \
+                    ($1, 'github', $3, NULL, NULL, NULL)",
+        )
+        .bind(user_id)
+        .bind(format!("google-{user_id}"))
+        .bind(format!("github-{user_id}"))
+        .execute(&pool)
+        .await?;
+
+        unbind_oauth_account(&pool, user_id, "github", Some("google")).await?;
+
+        let remaining: Vec<(String,)> = sqlx::query_as(
+            "SELECT provider FROM oauth_accounts WHERE user_id = $1 ORDER BY provider",
+        )
+        .bind(user_id)
+        .fetch_all(&pool)
+        .await?;
+        assert_eq!(remaining, vec![("google".to_string(),)]);
+
+        cleanup_user_rows(&pool, user_id).await?;
+        Ok(())
+    }
+}
--- a/crates/secrets-core/src/taxonomy.rs
+++ b/crates/secrets-core/src/taxonomy.rs
@@ -0,0 +1,4 @@
+/// Canonical secret type options for UI dropdowns.
+pub const SECRET_TYPE_OPTIONS: &[&str] = &[
+    "text", "password", "token", "api-key", "ssh-key", "url", "phone", "id-card",
+];
--- a/crates/secrets-mcp/Cargo.toml
+++ b/crates/secrets-mcp/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "secrets-mcp"
-version = "0.3.9"
+version = "0.5.7"
 edition.workspace = true

 [[bin]]
@@ -17,9 +17,10 @@ rmcp = { version = "1", features = ["server", "macros", "transport-streamable-ht
 axum = "0.8"
 axum-extra = { version = "0.10", features = ["typed-header"] }
 tower = "0.5"
-tower-http = { version = "0.6", features = ["cors", "trace"] }
+tower-http = { version = "0.6", features = ["cors", "trace", "limit"] }
 tower-sessions = "0.14"
 tower-sessions-sqlx-store-chrono = { version = "0.14", features = ["postgres"] }
+governor = { version = "0.10", features = ["std", "jitter"] }
 time = "0.3"

 # OAuth (manual token exchange via reqwest)
@@ -44,3 +45,4 @@ dotenvy.workspace = true
 urlencoding = "2"
 schemars = "1"
 http = "1"
+url = "2"
--- a/crates/secrets-mcp/src/auth.rs
+++ b/crates/secrets-mcp/src/auth.rs
@@ -1,7 +1,5 @@
-use std::net::SocketAddr;
-
 use axum::{
-    extract::{ConnectInfo, Request, State},
+    extract::{Request, State},
    http::StatusCode,
    middleware::Next,
    response::Response,
@@ -11,29 +9,14 @@ use uuid::Uuid;

 use secrets_core::service::api_key::validate_api_key;

+use crate::client_ip;
+
 /// Injected into request extensions after Bearer token validation.
 #[derive(Clone, Debug)]
 pub struct AuthUser {
    pub user_id: Uuid,
 }

-fn log_client_ip(req: &Request) -> Option<String> {
-    if let Some(first) = req
-        .headers()
-        .get("x-forwarded-for")
-        .and_then(|v| v.to_str().ok())
-        .and_then(|s| s.split(',').next())
-    {
-        let s = first.trim();
-        if !s.is_empty() {
-            return Some(s.to_string());
-        }
-    }
-    req.extensions()
-        .get::<ConnectInfo<SocketAddr>>()
-        .map(|c| c.ip().to_string())
-}
-
 /// Axum middleware that validates Bearer API keys for the /mcp route.
 /// Passes all non-MCP paths through without authentication.
 pub async fn bearer_auth_middleware(
@@ -43,7 +26,7 @@ pub async fn bearer_auth_middleware(
 ) -> Result<Response, StatusCode> {
    let path = req.uri().path();
    let method = req.method().as_str();
-    let client_ip = log_client_ip(&req);
+    let client_ip = client_ip::extract_client_ip(&req);

    // Only authenticate /mcp paths
    if !path.starts_with("/mcp") {
@@ -66,7 +49,7 @@ pub async fn bearer_auth_middleware(
            tracing::warn!(
                method,
                path,
-                client_ip = client_ip.as_deref(),
+                %client_ip,
                "invalid Authorization header format on /mcp (expected Bearer …)"
            );
            return Err(StatusCode::UNAUTHORIZED);
@@ -75,7 +58,7 @@ pub async fn bearer_auth_middleware(
            tracing::warn!(
                method,
                path,
-                client_ip = client_ip.as_deref(),
+                %client_ip,
                "missing Authorization header on /mcp"
            );
            return Err(StatusCode::UNAUTHORIZED);
@@ -93,7 +76,7 @@ pub async fn bearer_auth_middleware(
            tracing::warn!(
                method,
                path,
-                client_ip = client_ip.as_deref(),
+                %client_ip,
                key_prefix = %&raw_key.chars().take(12).collect::<String>(),
                key_len = raw_key.len(),
                "invalid api key (not found in database — e.g. revoked key or DB was reset; update MCP client Bearer token)"
@@ -104,7 +87,7 @@ pub async fn bearer_auth_middleware(
            tracing::error!(
                method,
                path,
-                client_ip = client_ip.as_deref(),
+                %client_ip,
                error = %e,
                "api key validation error"
            );
--- a/crates/secrets-mcp/src/client_ip.rs
+++ b/crates/secrets-mcp/src/client_ip.rs
@@ -0,0 +1,65 @@
+use axum::extract::Request;
+use std::net::{IpAddr, SocketAddr};
+
+/// Extract the client IP from a request.
+///
+/// When the `TRUST_PROXY` environment variable is set to `1` or `true`, the
+/// `X-Forwarded-For` and `X-Real-IP` headers are consulted first, which is
+/// appropriate when the service runs behind a trusted reverse proxy (e.g.
+/// Caddy). Otherwise — or if those headers are absent/empty — the direct TCP
+/// connection address from `ConnectInfo` is used.
+///
+/// **Important**: only enable `TRUST_PROXY` when the application is guaranteed
+/// to receive traffic exclusively through a controlled reverse proxy. Enabling
+/// it on a directly-exposed port allows clients to spoof their IP address and
+/// bypass per-IP rate limiting.
+pub fn extract_client_ip(req: &Request) -> String {
+    if trust_proxy_enabled() {
+        if let Some(ip) = forwarded_for_ip(req.headers()) {
+            return ip;
+        }
+        if let Some(ip) = real_ip(req.headers()) {
+            return ip;
+        }
+    }
+
+    connect_info_ip(req).unwrap_or_else(|| "unknown".to_string())
+}
+
+fn trust_proxy_enabled() -> bool {
+    static CACHE: std::sync::OnceLock<bool> = std::sync::OnceLock::new();
+    *CACHE.get_or_init(|| {
+        matches!(
+            std::env::var("TRUST_PROXY").as_deref(),
+            Ok("1") | Ok("true") | Ok("yes")
+        )
+    })
+}
+
+fn forwarded_for_ip(headers: &axum::http::HeaderMap) -> Option<String> {
+    let value = headers.get("x-forwarded-for")?.to_str().ok()?;
+    let first = value.split(',').next()?.trim();
+    if first.is_empty() {
+        None
+    } else {
+        validate_ip(first)
+    }
+}
+
+fn real_ip(headers: &axum::http::HeaderMap) -> Option<String> {
+    let value = headers.get("x-real-ip")?.to_str().ok()?;
+    let ip = value.trim();
+    if ip.is_empty() { None } else { validate_ip(ip) }
+}
+
+/// Validate that a string is a valid IP address.
+/// Returns Some(ip) if valid, None otherwise.
+fn validate_ip(s: &str) -> Option<String> {
+    s.parse::<IpAddr>().ok().map(|ip| ip.to_string())
+}
+
+fn connect_info_ip(req: &Request) -> Option<String> {
+    req.extensions()
+        .get::<axum::extract::ConnectInfo<SocketAddr>>()
+        .map(|c| c.0.ip().to_string())
+}
--- a/crates/secrets-mcp/src/error.rs
+++ b/crates/secrets-mcp/src/error.rs
@@ -0,0 +1,54 @@
+use secrets_core::error::AppError;
+
+/// Map a structured `AppError` to an MCP protocol error.
+///
+/// This replaces the previous pattern of swallowing all errors into `-32603`.
+pub fn app_error_to_mcp(err: &AppError) -> rmcp::ErrorData {
+    match err {
+        AppError::ConflictSecretName { secret_name } => rmcp::ErrorData::invalid_request(
+            format!(
+                "A secret with the name '{secret_name}' already exists for your account. \
+                 Secret names must be unique per user."
+            ),
+            None,
+        ),
+        AppError::ConflictEntryName { folder, name } => rmcp::ErrorData::invalid_request(
+            format!(
+                "An entry with folder='{folder}' and name='{name}' already exists. \
+                 The combination of folder and name must be unique."
+            ),
+            None,
+        ),
+        AppError::NotFoundEntry => rmcp::ErrorData::invalid_request(
+            "Entry not found. Use secrets_find to discover existing entries.",
+            None,
+        ),
+        AppError::NotFoundUser => rmcp::ErrorData::invalid_request("User not found.", None),
+        AppError::NotFoundSecret => rmcp::ErrorData::invalid_request("Secret not found.", None),
+        AppError::AuthenticationFailed => rmcp::ErrorData::invalid_request(
+            "Authentication failed. Please check your API key or login credentials.",
+            None,
+        ),
+        AppError::Unauthorized => rmcp::ErrorData::invalid_request(
+            "Unauthorized: you do not have permission to access this resource.",
+            None,
+        ),
+        AppError::Validation { message } => rmcp::ErrorData::invalid_request(message.clone(), None),
+        AppError::ConcurrentModification => rmcp::ErrorData::invalid_request(
+            "The entry was modified by another request. Please refresh and try again.",
+            None,
+        ),
+        AppError::DecryptionFailed => rmcp::ErrorData::invalid_request(
+            "Decryption failed — the encryption key may be incorrect or does not match the data.",
+            None,
+        ),
+        AppError::EncryptionKeyNotSet => rmcp::ErrorData::invalid_request(
+            "Encryption key not set. You must set a passphrase before using this feature.",
+            None,
+        ),
+        AppError::Internal(_) => rmcp::ErrorData::internal_error(
+            "Request failed due to a server error. Check service logs if you need details.",
+            None,
+        ),
+    }
+}
--- a/crates/secrets-mcp/src/logging.rs
+++ b/crates/secrets-mcp/src/logging.rs
@@ -1,25 +1,28 @@
-use std::net::SocketAddr;
 use std::time::Instant;

 use axum::{
    body::{Body, Bytes, to_bytes},
-    extract::{ConnectInfo, Request},
+    extract::Request,
    http::{
        HeaderMap, Method, StatusCode,
-        header::{CONTENT_LENGTH, CONTENT_TYPE, USER_AGENT},
+        header::{AUTHORIZATION, CONTENT_LENGTH, CONTENT_TYPE, USER_AGENT},
    },
    middleware::Next,
    response::{IntoResponse, Response},
 };

+use crate::auth::AuthUser;
+
 /// Axum middleware that logs structured info for every HTTP request.
 ///
 /// All requests: method, path, status, latency_ms, client_ip, user_agent.
 /// POST /mcp requests: additionally parses JSON-RPC body for jsonrpc_method,
-/// tool_name, jsonrpc_id, mcp_session, batch_size.
+/// tool_name, jsonrpc_id, mcp_session, batch_size, tool_args (non-sensitive
+/// arguments only), plus masked auth_key / enc_key fingerprints and user_id
+/// for diagnosing header forwarding issues.
 ///
-/// Sensitive headers (Authorization, X-Encryption-Key) and secret values
-/// are never logged.
+/// Sensitive headers (Authorization, X-Encryption-Key) are never logged in
+/// full — only short fingerprints are emitted.
 pub async fn request_logging_middleware(req: Request, next: Next) -> Response {
    let method = req.method().clone();
    let path = req.uri().path().to_string();
@@ -33,6 +36,10 @@ pub async fn request_logging_middleware(req: Request, next: Next) -> Response {
        .and_then(|v| v.to_str().ok())
        .map(|s| s.to_string());

+    // Capture header fingerprints before consuming the request.
+    let auth_key = mask_bearer(req.headers());
+    let enc_key = mask_enc_key(req.headers());
+
    let is_mcp_post = path.starts_with("/mcp") && method == Method::POST;
    let is_json = header_str(req.headers(), CONTENT_TYPE)
        .map(|ct| ct.contains("application/json"))
@@ -46,6 +53,11 @@ pub async fn request_logging_middleware(req: Request, next: Next) -> Response {
        let cap = content_len.unwrap_or(0);
        if cap <= 512 * 1024 {
            let (parts, body) = req.into_parts();
+            // user_id is available after auth middleware has run (injected into extensions).
+            let user_id = parts
+                .extensions
+                .get::<AuthUser>()
+                .map(|a| a.user_id.to_string());
            match to_bytes(body, 512 * 1024).await {
                Ok(bytes) => {
                    let rpc = parse_jsonrpc_meta(&bytes);
@@ -62,6 +74,9 @@ pub async fn request_logging_middleware(req: Request, next: Next) -> Response {
                        ua.as_deref(),
                        content_len,
                        mcp_session.as_deref(),
+                        auth_key.as_deref(),
+                        &enc_key,
+                        user_id.as_deref(),
                        &rpc,
                    );
                    return resp;
@@ -78,6 +93,9 @@ pub async fn request_logging_middleware(req: Request, next: Next) -> Response {
                        ua = ua.as_deref(),
                        content_length = content_len,
                        mcp_session = mcp_session.as_deref(),
+                        auth_key = auth_key.as_deref(),
+                        enc_key = enc_key.as_str(),
+                        user_id = user_id.as_deref(),
                        "mcp request",
                    );
                    return (
@@ -160,6 +178,9 @@ fn log_mcp_request(
    ua: Option<&str>,
    content_length: Option<u64>,
    mcp_session: Option<&str>,
+    auth_key: Option<&str>,
+    enc_key: &str,
+    user_id: Option<&str>,
    rpc: &JsonRpcMeta,
 ) {
    tracing::info!(
@@ -175,18 +196,94 @@ fn log_mcp_request(
        tool = rpc.tool_name.as_deref(),
        jsonrpc_id = rpc.request_id.as_deref(),
        batch_size = rpc.batch_size,
+        tool_args = rpc.tool_args.as_deref(),
+        auth_key,
+        enc_key,
+        user_id,
        "mcp request",
    );
 }

+// ── Sensitive header masking ──────────────────────────────────────────────────
+
+/// Mask a Bearer token: emit only the first 12 characters followed by `…`.
+/// Returns `None` if the Authorization header is absent or not a Bearer token.
+/// Example: `sk_90c88844e4e5…`
+fn mask_bearer(headers: &HeaderMap) -> Option<String> {
+    let val = headers.get(AUTHORIZATION)?.to_str().ok()?;
+    let token = val.strip_prefix("Bearer ")?.trim();
+    if token.is_empty() {
+        return None;
+    }
+    if token.len() > 12 {
+        Some(format!("{}…", &token[..12]))
+    } else {
+        Some(token.to_string())
+    }
+}
+
+/// Fingerprint the X-Encryption-Key header.
+///
+/// Emits first 4 chars, last 4 chars, and raw byte length, e.g. `146b…5516(64)`.
+/// Returns `"absent"` when the header is missing. Reveals enough to confirm
+/// which key arrived and whether it was truncated or padded, without revealing
+/// the full value.
+fn mask_enc_key(headers: &HeaderMap) -> String {
+    match headers
+        .get("x-encryption-key")
+        .and_then(|v| v.to_str().ok())
+    {
+        Some(val) => {
+            let raw_len = val.len();
+            let t = val.trim();
+            let len = t.len();
+            if len >= 8 {
+                let prefix = &t[..4];
+                let suffix = &t[len - 4..];
+                if raw_len != len {
+                    // Trailing/leading whitespace detected — extra diagnostic.
+                    format!("{prefix}…{suffix}({len}, raw={raw_len})")
+                } else {
+                    format!("{prefix}…{suffix}({len})")
+                }
+            } else {
+                format!("…({len})")
+            }
+        }
+        None => "absent".to_string(),
+    }
+}
+
 // ── JSON-RPC body parsing ─────────────────────────────────────────────────────

+/// Safe (non-sensitive) argument keys that may be included verbatim in logs.
+/// Keys NOT in this list (e.g. `secrets`, `secrets_obj`, `meta_obj`,
+/// `encryption_key`) are silently dropped.
+const SAFE_ARG_KEYS: &[&str] = &[
+    "id",
+    "name",
+    "name_query",
+    "folder",
+    "type",
+    "entry_type",
+    "field",
+    "query",
+    "tags",
+    "limit",
+    "offset",
+    "format",
+    "dry_run",
+    "prefix",
+];
+
 #[derive(Debug, Default)]
 struct JsonRpcMeta {
    request_id: Option<String>,
    rpc_method: Option<String>,
    tool_name: Option<String>,
    batch_size: Option<usize>,
+    /// Non-sensitive tool call arguments for diagnostic logging.
+    tool_args: Option<String>,
 }

 fn parse_jsonrpc_meta(bytes: &Bytes) -> JsonRpcMeta {
@@ -216,12 +313,47 @@ fn parse_single(value: &serde_json::Value) -> JsonRpcMeta {
        .pointer("/params/name")
        .and_then(|v| v.as_str())
        .map(|s| s.to_string());
+    let tool_args = extract_tool_args(value);

    JsonRpcMeta {
        request_id,
        rpc_method,
        tool_name,
        batch_size: None,
+        tool_args,
+    }
+}
+
+/// Extract a compact summary of non-sensitive tool arguments for logging.
+/// Only keys listed in `SAFE_ARG_KEYS` are included.
+fn extract_tool_args(value: &serde_json::Value) -> Option<String> {
+    let args = value.pointer("/params/arguments")?;
+    let obj = args.as_object()?;
+    let pairs: Vec<String> = obj
+        .iter()
+        .filter(|(k, v)| SAFE_ARG_KEYS.contains(&k.as_str()) && !v.is_null())
+        .map(|(k, v)| format!("{}={}", k, summarize_value(v)))
+        .collect();
+    if pairs.is_empty() {
+        None
+    } else {
+        Some(pairs.join(" "))
+    }
+}
+
+/// Produce a short, log-safe representation of a JSON value.
+fn summarize_value(v: &serde_json::Value) -> String {
+    match v {
+        serde_json::Value::String(s) => {
+            if s.len() > 64 {
+                format!("\"{}…\"", &s[..64])
+            } else {
+                format!("\"{s}\"")
+            }
+        }
+        serde_json::Value::Array(arr) => format!("[…{}]", arr.len()),
+        serde_json::Value::Object(_) => "{…}".to_string(),
+        other => other.to_string(),
    }
 }

@@ -245,18 +377,5 @@ fn header_str(headers: &HeaderMap, name: impl axum::http::header::AsHeaderName)
 }

 fn client_ip(req: &Request) -> Option<String> {
-    if let Some(first) = req
-        .headers()
-        .get("x-forwarded-for")
-        .and_then(|v| v.to_str().ok())
-        .and_then(|s| s.split(',').next())
-    {
-        let s = first.trim();
-        if !s.is_empty() {
-            return Some(s.to_string());
-        }
-    }
-    req.extensions()
-        .get::<ConnectInfo<SocketAddr>>()
-        .map(|c| c.ip().to_string())
+    crate::client_ip::extract_client_ip(req).into()
 }
--- a/crates/secrets-mcp/src/main.rs
+++ b/crates/secrets-mcp/src/main.rs
@@ -1,7 +1,11 @@
 mod auth;
+mod client_ip;
+mod error;
 mod logging;
 mod oauth;
+mod rate_limit;
 mod tools;
+mod validation;
 mod web;

 use std::net::SocketAddr;
@@ -152,10 +156,20 @@ async fn main() -> Result<()> {
    );

    // ── Router ────────────────────────────────────────────────────────────────
-    let cors = CorsLayer::new()
-        .allow_origin(Any)
-        .allow_methods(Any)
-        .allow_headers(Any);
+    // CORS: restrict origins in production, allow all in development
+    let is_production = matches!(
+        load_env_var("SECRETS_ENV")
+            .as_deref()
+            .map(|s| s.to_ascii_lowercase())
+            .as_deref(),
+        Some("prod" | "production")
+    );
+
+    let cors = build_cors_layer(&base_url, is_production);
+
+    // Rate limiting
+    let rate_limit_state = rate_limit::RateLimitState::new();
+    let rate_limit_cleanup = rate_limit::spawn_cleanup_task(rate_limit_state.ip_limiter.clone());

    let router = Router::new()
        .merge(web::web_router())
@@ -167,8 +181,15 @@ async fn main() -> Result<()> {
            pool,
            auth::bearer_auth_middleware,
        ))
+        .layer(axum::middleware::from_fn_with_state(
+            rate_limit_state.clone(),
+            rate_limit::rate_limit_middleware,
+        ))
        .layer(session_layer)
        .layer(cors)
+        .layer(tower_http::limit::RequestBodyLimitLayer::new(
+            10 * 1024 * 1024,
+        ))
        .with_state(app_state);

    // ── Start server ──────────────────────────────────────────────────────────
@@ -191,12 +212,135 @@ async fn main() -> Result<()> {
    .context("server error")?;

    session_cleanup.abort();
+    rate_limit_cleanup.abort();
    Ok(())
 }

 async fn shutdown_signal() {
-    tokio::signal::ctrl_c()
-        .await
-        .expect("failed to install CTRL+C signal handler");
+    let ctrl_c = tokio::signal::ctrl_c();
+
+    #[cfg(unix)]
+    let terminate = async {
+        tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())
+            .expect("failed to install SIGTERM handler")
+            .recv()
+            .await;
+    };
+
+    #[cfg(not(unix))]
+    let terminate = std::future::pending::<()>();
+
+    tokio::select! {
+        _ = ctrl_c => {},
+        _ = terminate => {},
+    }
+
    tracing::info!("Shutting down gracefully...");
 }
+
+/// Production CORS allowed headers.
+///
+/// When adding a new custom header to the MCP or Web API, this list must be
+/// updated accordingly — otherwise browsers will block the request during
+/// the CORS preflight check.
+fn production_allowed_headers() -> [axum::http::HeaderName; 5] {
+    [
+        axum::http::header::AUTHORIZATION,
+        axum::http::header::CONTENT_TYPE,
+        axum::http::HeaderName::from_static("x-encryption-key"),
+        axum::http::HeaderName::from_static("mcp-session-id"),
+        axum::http::HeaderName::from_static("x-mcp-session"),
+    ]
+}
+
+/// Production CORS allowed methods.
+///
+/// Keep this list explicit because tower-http rejects
+/// `allow_credentials(true)` together with `allow_methods(Any)`.
+fn production_allowed_methods() -> [axum::http::Method; 5] {
+    [
+        axum::http::Method::GET,
+        axum::http::Method::POST,
+        axum::http::Method::PATCH,
+        axum::http::Method::DELETE,
+        axum::http::Method::OPTIONS,
+    ]
+}
+
+/// Build the CORS layer for the application.
+///
+/// In production mode the origin is restricted to the BASE_URL origin
+/// (scheme://host:port, path stripped) and credentials are allowed.
+/// `allow_headers` and `allow_methods` use explicit whitelists to avoid the
+/// tower-http restriction on `allow_credentials(true)` + wildcards.
+///
+/// In development mode all origins, methods and headers are allowed.
+fn build_cors_layer(base_url: &str, is_production: bool) -> CorsLayer {
+    if is_production {
+        let allowed_origin = if let Ok(parsed) = base_url.parse::<url::Url>() {
+            let origin = parsed.origin().ascii_serialization();
+            origin
+                .parse::<axum::http::HeaderValue>()
+                .unwrap_or_else(|_| panic!("invalid BASE_URL origin: {}", origin))
+        } else {
+            base_url
+                .parse::<axum::http::HeaderValue>()
+                .unwrap_or_else(|_| panic!("invalid BASE_URL: {}", base_url))
+        };
+        CorsLayer::new()
+            .allow_origin(allowed_origin)
+            .allow_methods(production_allowed_methods())
+            .allow_headers(production_allowed_headers())
+            .allow_credentials(true)
+    } else {
+        CorsLayer::new()
+            .allow_origin(Any)
+            .allow_methods(Any)
+            .allow_headers(Any)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn production_cors_does_not_panic() {
+        let layer = build_cors_layer("https://secrets.example.com/app", true);
+        let _ = layer;
+    }
+
+    #[test]
+    fn production_cors_headers_include_all_required() {
+        let headers = production_allowed_headers();
+        let names: Vec<&str> = headers.iter().map(|h| h.as_str()).collect();
+        assert!(names.contains(&"authorization"));
+        assert!(names.contains(&"content-type"));
+        assert!(names.contains(&"x-encryption-key"));
+        assert!(names.contains(&"mcp-session-id"));
+        assert!(names.contains(&"x-mcp-session"));
+    }
+
+    #[test]
+    fn production_cors_methods_include_all_required() {
+        let methods = production_allowed_methods();
+        assert!(methods.contains(&axum::http::Method::GET));
+        assert!(methods.contains(&axum::http::Method::POST));
+        assert!(methods.contains(&axum::http::Method::PATCH));
+        assert!(methods.contains(&axum::http::Method::DELETE));
+        assert!(methods.contains(&axum::http::Method::OPTIONS));
+    }
+
+    #[test]
+    fn production_cors_normalizes_base_url_with_path() {
+        let url = url::Url::parse("https://secrets.example.com/secrets/app").unwrap();
+        let origin = url.origin().ascii_serialization();
+        assert_eq!(origin, "https://secrets.example.com");
+    }
+
+    #[test]
+    fn development_cors_allows_everything() {
+        let layer = build_cors_layer("http://localhost:9315", false);
+        let _ = layer;
+    }
+}
--- a/crates/secrets-mcp/src/rate_limit.rs
+++ b/crates/secrets-mcp/src/rate_limit.rs
@@ -0,0 +1,160 @@
+use std::num::NonZeroU32;
+use std::sync::Arc;
+use std::time::Duration;
+
+use axum::{
+    extract::{Request, State},
+    http::{HeaderMap, HeaderValue, StatusCode},
+    middleware::Next,
+    response::{IntoResponse, Response},
+};
+use governor::{
+    Quota, RateLimiter,
+    clock::{Clock, DefaultClock},
+    state::{InMemoryState, NotKeyed, keyed::DashMapStateStore},
+};
+use serde_json::json;
+
+use crate::client_ip;
+
+/// Per-IP rate limiter (keyed by client IP string)
+type IpRateLimiter = RateLimiter<String, DashMapStateStore<String>, DefaultClock>;
+
+/// Global rate limiter (not keyed)
+type GlobalRateLimiter = RateLimiter<NotKeyed, InMemoryState, DefaultClock>;
+
+/// Parse a u32 env value into NonZeroU32, logging a warning and falling back
+/// to the default if the value is zero.
+fn nz_or_log(value: u32, default: u32, name: &str) -> NonZeroU32 {
+    NonZeroU32::new(value).unwrap_or_else(|| {
+        tracing::warn!(
+            configured = value,
+            default,
+            "{name} must be non-zero, using default"
+        );
+        NonZeroU32::new(default).unwrap()
+    })
+}
+
+#[derive(Clone)]
+pub struct RateLimitState {
+    pub ip_limiter: Arc<IpRateLimiter>,
+    pub global_limiter: Arc<GlobalRateLimiter>,
+}
+
+impl RateLimitState {
+    /// Create a new RateLimitState with default limits.
+    ///
+    /// Default limits (can be overridden via environment variables):
+    /// - Global: 100 req/s, burst 200
+    /// - Per-IP: 20 req/s, burst 40
+    pub fn new() -> Self {
+        let global_rate = std::env::var("RATE_LIMIT_GLOBAL_PER_SECOND")
+            .ok()
+            .and_then(|v| v.parse::<u32>().ok())
+            .unwrap_or(100);
+
+        let global_burst = std::env::var("RATE_LIMIT_GLOBAL_BURST")
+            .ok()
+            .and_then(|v| v.parse::<u32>().ok())
+            .unwrap_or(200);
+
+        let ip_rate = std::env::var("RATE_LIMIT_IP_PER_SECOND")
+            .ok()
+            .and_then(|v| v.parse::<u32>().ok())
+            .unwrap_or(20);
+
+        let ip_burst = std::env::var("RATE_LIMIT_IP_BURST")
+            .ok()
+            .and_then(|v| v.parse::<u32>().ok())
+            .unwrap_or(40);
+
+        let global_rate_nz = nz_or_log(global_rate, 100, "RATE_LIMIT_GLOBAL_PER_SECOND");
+        let global_burst_nz = nz_or_log(global_burst, 200, "RATE_LIMIT_GLOBAL_BURST");
+        let ip_rate_nz = nz_or_log(ip_rate, 20, "RATE_LIMIT_IP_PER_SECOND");
+        let ip_burst_nz = nz_or_log(ip_burst, 40, "RATE_LIMIT_IP_BURST");
+
+        let global_quota = Quota::per_second(global_rate_nz).allow_burst(global_burst_nz);
+        let ip_quota = Quota::per_second(ip_rate_nz).allow_burst(ip_burst_nz);
+
+        tracing::info!(
+            global_rate = global_rate_nz.get(),
+            global_burst = global_burst_nz.get(),
+            ip_rate = ip_rate_nz.get(),
+            ip_burst = ip_burst_nz.get(),
+            "rate limiter initialized"
+        );
+
+        Self {
+            global_limiter: Arc::new(RateLimiter::direct(global_quota)),
+            ip_limiter: Arc::new(RateLimiter::dashmap(ip_quota)),
+        }
+    }
+}
+
+/// Rate limiting middleware function.
+///
+/// Checks both global and per-IP rate limits before allowing the request through.
+/// Returns 429 Too Many Requests if either limit is exceeded.
+pub async fn rate_limit_middleware(
+    State(rl): State<RateLimitState>,
+    req: Request,
+    next: Next,
+) -> Result<Response, Response> {
+    // Check global rate limit first
+    if let Err(negative) = rl.global_limiter.check() {
+        let retry_after = negative.wait_time_from(DefaultClock::default().now());
+        tracing::warn!(
+            retry_after_secs = retry_after.as_secs(),
+            "global rate limit exceeded"
+        );
+        return Err(too_many_requests_response(Some(retry_after)));
+    }
+
+    // Check per-IP rate limit
+    let key = client_ip::extract_client_ip(&req);
+    if let Err(negative) = rl.ip_limiter.check_key(&key) {
+        let retry_after = negative.wait_time_from(DefaultClock::default().now());
+        tracing::warn!(
+            client_ip = %key,
+            retry_after_secs = retry_after.as_secs(),
+            "per-IP rate limit exceeded"
+        );
+        return Err(too_many_requests_response(Some(retry_after)));
+    }
+
+    Ok(next.run(req).await)
+}
+
+/// Start a background task to clean up expired rate limiter entries.
+///
+/// This should be called once during application startup.
+/// The task runs every 60 seconds and will be aborted on shutdown.
+pub fn spawn_cleanup_task(ip_limiter: Arc<IpRateLimiter>) -> tokio::task::JoinHandle<()> {
+    tokio::spawn(async move {
+        let mut interval = tokio::time::interval(Duration::from_secs(60));
+        loop {
+            interval.tick().await;
+            ip_limiter.retain_recent();
+        }
+    })
+}
+
+/// Create a 429 Too Many Requests response.
+fn too_many_requests_response(retry_after: Option<Duration>) -> Response {
+    let mut headers = HeaderMap::new();
+    headers.insert("Content-Type", HeaderValue::from_static("application/json"));
+
+    if let Some(duration) = retry_after {
+        let secs = duration.as_secs().max(1);
+        if let Ok(value) = HeaderValue::from_str(&secs.to_string()) {
+            headers.insert("Retry-After", value);
+        }
+    }
+
+    let body = json!({
+        "error": "Too many requests, please try again later"
+    });
+
+    (StatusCode::TOO_MANY_REQUESTS, headers, body.to_string()).into_response()
+}
--- a/crates/secrets-mcp/src/tools.rs
+++ b/crates/secrets-mcp/src/tools.rs
--- a/crates/secrets-mcp/src/validation.rs
+++ b/crates/secrets-mcp/src/validation.rs
@@ -0,0 +1,149 @@
+/// Validation constants for input field lengths.
+pub const MAX_NAME_LENGTH: usize = 256;
+pub const MAX_FOLDER_LENGTH: usize = 128;
+pub const MAX_ENTRY_TYPE_LENGTH: usize = 64;
+pub const MAX_NOTES_LENGTH: usize = 10000;
+pub const MAX_TAG_LENGTH: usize = 64;
+pub const MAX_TAG_COUNT: usize = 50;
+pub const MAX_META_KEY_LENGTH: usize = 128;
+pub const MAX_META_VALUE_LENGTH: usize = 4096;
+pub const MAX_META_COUNT: usize = 100;
+
+/// Validate input field lengths for MCP tools.
+///
+/// Returns an error if any field exceeds its maximum length.
+pub fn validate_input_lengths(
+    name: &str,
+    folder: Option<&str>,
+    entry_type: Option<&str>,
+    notes: Option<&str>,
+) -> Result<(), rmcp::ErrorData> {
+    if name.chars().count() > MAX_NAME_LENGTH {
+        return Err(rmcp::ErrorData::invalid_params(
+            format!("name must be at most {} characters", MAX_NAME_LENGTH),
+            None,
+        ));
+    }
+    if let Some(folder) = folder
+        && folder.chars().count() > MAX_FOLDER_LENGTH
+    {
+        return Err(rmcp::ErrorData::invalid_params(
+            format!("folder must be at most {} characters", MAX_FOLDER_LENGTH),
+            None,
+        ));
+    }
+    if let Some(entry_type) = entry_type
+        && entry_type.chars().count() > MAX_ENTRY_TYPE_LENGTH
+    {
+        return Err(rmcp::ErrorData::invalid_params(
+            format!("type must be at most {} characters", MAX_ENTRY_TYPE_LENGTH),
+            None,
+        ));
+    }
+    if let Some(notes) = notes
+        && notes.chars().count() > MAX_NOTES_LENGTH
+    {
+        return Err(rmcp::ErrorData::invalid_params(
+            format!("notes must be at most {} characters", MAX_NOTES_LENGTH),
+            None,
+        ));
+    }
+    Ok(())
+}
+
+/// Validate the tags list.
+///
+/// Checks total count and per-tag character length.
+pub fn validate_tags(tags: &[String]) -> Result<(), rmcp::ErrorData> {
+    if tags.len() > MAX_TAG_COUNT {
+        return Err(rmcp::ErrorData::invalid_params(
+            format!("at most {} tags are allowed", MAX_TAG_COUNT),
+            None,
+        ));
+    }
+    for tag in tags {
+        if tag.chars().count() > MAX_TAG_LENGTH {
+            return Err(rmcp::ErrorData::invalid_params(
+                format!(
+                    "tag '{}' exceeds the maximum length of {} characters",
+                    tag, MAX_TAG_LENGTH
+                ),
+                None,
+            ));
+        }
+    }
+    Ok(())
+}
+
+/// Validate metadata KV strings (key=value / key:=json format).
+///
+/// Checks total count and per-key/per-value character lengths.
+/// This is a best-effort check on the raw KV strings before parsing;
+/// keys containing `:` path separators are checked as a whole.
+pub fn validate_meta_entries(entries: &[String]) -> Result<(), rmcp::ErrorData> {
+    if entries.len() > MAX_META_COUNT {
+        return Err(rmcp::ErrorData::invalid_params(
+            format!("at most {} metadata entries are allowed", MAX_META_COUNT),
+            None,
+        ));
+    }
+    for entry in entries {
+        // key:=json — check both key and JSON value length
+        if let Some((key, value)) = entry.split_once(":=") {
+            if key.chars().count() > MAX_META_KEY_LENGTH {
+                return Err(rmcp::ErrorData::invalid_params(
+                    format!(
+                        "metadata key '{}' exceeds the maximum length of {} characters",
+                        key, MAX_META_KEY_LENGTH
+                    ),
+                    None,
+                ));
+            }
+            if value.chars().count() > MAX_META_VALUE_LENGTH {
+                return Err(rmcp::ErrorData::invalid_params(
+                    format!(
+                        "metadata JSON value for key '{}' exceeds the maximum length of {} characters",
+                        key, MAX_META_VALUE_LENGTH
+                    ),
+                    None,
+                ));
+            }
+            continue;
+        }
+        // key=value or key@path
+        if let Some((key, value)) = entry.split_once('=') {
+            if key.chars().count() > MAX_META_KEY_LENGTH {
+                return Err(rmcp::ErrorData::invalid_params(
+                    format!(
+                        "metadata key '{}' exceeds the maximum length of {} characters",
+                        key, MAX_META_KEY_LENGTH
+                    ),
+                    None,
+                ));
+            }
+            if value.chars().count() > MAX_META_VALUE_LENGTH {
+                return Err(rmcp::ErrorData::invalid_params(
+                    format!(
+                        "metadata value for key '{}' exceeds the maximum length of {} characters",
+                        key, MAX_META_VALUE_LENGTH
+                    ),
+                    None,
+                ));
+            }
+        } else {
+            // Fallback: entry without = or := — check total length
+            let max_total = MAX_META_KEY_LENGTH + MAX_META_VALUE_LENGTH;
+            if entry.chars().count() > max_total {
+                let preview = entry.chars().take(50).collect::<String>();
+                return Err(rmcp::ErrorData::invalid_params(
+                    format!(
+                        "metadata entry '{}' exceeds the maximum length of {} characters",
+                        preview, max_total
+                    ),
+                    None,
+                ));
+            }
+        }
+    }
+    Ok(())
+}
--- a/crates/secrets-mcp/src/web.rs
+++ b/crates/secrets-mcp/src/web.rs
--- a/crates/secrets-mcp/templates/audit.html
+++ b/crates/secrets-mcp/templates/audit.html
@@ -38,6 +38,10 @@
        }
        .topbar-spacer { flex: 1; }
        .nav-user { font-size: 13px; color: var(--text-muted); }
+        .lang-bar { display: flex; gap: 2px; background: var(--surface2); border-radius: 6px; padding: 2px; }
+        .lang-btn { padding: 3px 9px; border: none; background: none; color: var(--text-muted);
+                    font-size: 12px; cursor: pointer; border-radius: 4px; }
+        .lang-btn.active { background: var(--border); color: var(--text); }
        .btn-sign-out {
            padding: 5px 12px; border-radius: 6px; border: 1px solid var(--border);
            background: none; color: var(--text); font-size: 12px; text-decoration: none; cursor: pointer;
@@ -46,8 +50,25 @@
        .main { padding: 32px 24px 40px; flex: 1; }
        .card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
                padding: 24px; width: 100%; max-width: 1180px; margin: 0 auto; }
-        .card-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
-        .card-subtitle { color: var(--text-muted); font-size: 13px; margin-bottom: 20px; }
+        .card-title-row {
+            display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
+            margin-bottom: 20px;
+        }
+        .card-title { font-size: 20px; font-weight: 600; margin: 0; }
+        .card-title-count {
+            display: inline-flex;
+            align-items: center;
+            min-height: 24px;
+            padding: 0 8px;
+            border: 1px solid var(--border);
+            border-radius: 999px;
+            background: var(--bg);
+            color: var(--text-muted);
+            font-size: 12px;
+            font-weight: 600;
+            line-height: 1;
+            font-family: 'JetBrains Mono', monospace;
+        }
        .empty { color: var(--text-muted); font-size: 14px; padding: 20px 0; }
        table { width: 100%; border-collapse: collapse; }
        th, td { text-align: left; vertical-align: top; padding: 12px 10px; border-top: 1px solid var(--border); }
@@ -77,13 +98,28 @@
            td::before {
                display: block; color: var(--text-muted); font-size: 11px;
                margin-bottom: 4px; text-transform: uppercase;
+                content: attr(data-label);
            }
-            td.col-time::before { content: "Time"; }
-            td.col-action::before { content: "Action"; }
-            td.col-target::before { content: "Target"; }
-            td.col-detail::before { content: "Detail"; }
            .detail { max-width: none; }
        }
+        .pagination {
+            display: flex; align-items: center; gap: 8px; margin-top: 20px;
+            justify-content: center; padding: 12px 0;
+        }
+        .page-btn {
+            padding: 6px 14px; border-radius: 6px; border: 1px solid var(--border);
+            background: var(--surface); color: var(--text); text-decoration: none;
+            font-size: 13px; cursor: pointer;
+        }
+        .page-btn:hover { background: var(--surface2); }
+        .page-btn-disabled {
+            padding: 6px 14px; border-radius: 6px; border: 1px solid var(--border);
+            background: var(--surface); color: var(--text-muted); font-size: 13px;
+            opacity: 0.5; cursor: not-allowed;
+        }
+        .page-info {
+            color: var(--text-muted); font-size: 13px; font-family: 'JetBrains Mono', monospace;
+        }
    </style>
 </head>
 <body>
@@ -91,9 +127,9 @@
 <aside class="sidebar">
    <a href="/dashboard" class="sidebar-logo"><span>secrets</span></a>
    <nav class="sidebar-menu">
-        <a href="/dashboard" class="sidebar-link">MCP</a>
-        <a href="/entries" class="sidebar-link">条目</a>
-        <a href="/audit" class="sidebar-link active">审计</a>
+        <a href="/dashboard" class="sidebar-link" data-i18n="navMcp">MCP</a>
+        <a href="/entries" class="sidebar-link" data-i18n="navEntries">条目</a>
+        <a href="/audit" class="sidebar-link active" data-i18n="navAudit">审计</a>
    </nav>
 </aside>

@@ -101,46 +137,89 @@
 <div class="topbar">
    <span class="topbar-spacer"></span>
    <span class="nav-user">{{ user_name }}{% if !user_email.is_empty() %} · {{ user_email }}{% endif %}</span>
+    <div class="lang-bar">
+        <button class="lang-btn" onclick="setLang('zh-CN')">简</button>
+        <button class="lang-btn" onclick="setLang('zh-TW')">繁</button>
+        <button class="lang-btn" onclick="setLang('en')">EN</button>
+    </div>
    <form action="/auth/logout" method="post" style="display:inline">
-        <button type="submit" class="btn-sign-out">退出</button>
+        <button type="submit" class="btn-sign-out" data-i18n="signOut">退出</button>
    </form>
 </div>

 <main class="main">
    <section class="card">
-        <div class="card-title">我的审计</div>
-        <div class="card-subtitle">展示最近 100 条与当前用户相关的新审计记录。时间为浏览器本地时区。</div>
+        <div class="card-title-row">
+            <div class="card-title" data-i18n="auditTitle">我的审计</div>
+            <span class="card-title-count">{{ total_count }}</span>
+        </div>

        {% if entries.is_empty() %}
-        <div class="empty">暂无审计记录。</div>
+        <div class="empty" data-i18n="emptyAudit">暂无审计记录。</div>
        {% else %}
        <table>
            <thead>
                <tr>
-                    <th>时间</th>
-                    <th>动作</th>
-                    <th>目标</th>
-                    <th>详情</th>
+                    <th data-i18n="colTime">时间</th>
+                    <th data-i18n="colAction">动作</th>
+                    <th data-i18n="colTarget">目标</th>
+                    <th data-i18n="colDetail">详情</th>
                </tr>
            </thead>
            <tbody>
                {% for entry in entries %}
                <tr>
-                    <td class="col-time mono"><time class="audit-local-time" datetime="{{ entry.created_at_iso }}">{{ entry.created_at_iso }}</time></td>
-                    <td class="col-action mono">{{ entry.action }}</td>
-                    <td class="col-target mono">{{ entry.target }}</td>
-                    <td class="col-detail"><pre class="detail">{{ entry.detail }}</pre></td>
+                    <td class="col-time mono" data-label="时间"><time class="audit-local-time" datetime="{{ entry.created_at_iso }}">{{ entry.created_at_iso }}</time></td>
+                    <td class="col-action mono" data-label="动作">{{ entry.action }}</td>
+                    <td class="col-target mono" data-label="目标">{{ entry.target }}</td>
+                    <td class="col-detail" data-label="详情"><pre class="detail">{{ entry.detail }}</pre></td>
                </tr>
                {% endfor %}
            </tbody>
        </table>
+
+        {% if total_count > 0 %}
+        <div class="pagination">
+            {% if current_page > 1 %}
+            <a href="?page={{ current_page - 1 }}" class="page-btn" data-i18n="prevPage">上一页</a>
+            {% else %}
+            <span class="page-btn page-btn-disabled" data-i18n="prevPage">上一页</span>
+            {% endif %}
+            <span class="page-info">{{ current_page }} / {{ total_pages }}</span>
+            {% if current_page < total_pages %}
+            <a href="?page={{ current_page + 1 }}" class="page-btn" data-i18n="nextPage">下一页</a>
+            {% else %}
+            <span class="page-btn page-btn-disabled" data-i18n="nextPage">下一页</span>
+            {% endif %}
+        </div>
+        {% endif %}
        {% endif %}
    </section>
 </main>
 </div>
 </div>
+<script src="/static/i18n.js"></script>
 <script>
 (function () {
+  I18N_PAGE = {
+    'zh-CN': { pageTitle: 'Secrets — 审计', auditTitle: '我的审计', emptyAudit: '暂无审计记录。', colTime: '时间', colAction: '动作', colTarget: '目标', colDetail: '详情', prevPage: '上一页', nextPage: '下一页' },
+    'zh-TW': { pageTitle: 'Secrets — 審計', auditTitle: '我的審計', emptyAudit: '暫無審計記錄。', colTime: '時間', colAction: '動作', colTarget: '目標', colDetail: '詳情', prevPage: '上一頁', nextPage: '下一頁' },
+    en: { pageTitle: 'Secrets — Audit', auditTitle: 'My audit', emptyAudit: 'No audit records.', colTime: 'Time', colAction: 'Action', colTarget: 'Target', colDetail: 'Detail', prevPage: 'Previous', nextPage: 'Next' }
+  };
+
+  window.applyPageLang = function () {
+    document.querySelectorAll('tbody tr').forEach(function (tr) {
+      var time = tr.querySelector('.col-time');
+      var action = tr.querySelector('.col-action');
+      var target = tr.querySelector('.col-target');
+      var detail = tr.querySelector('.col-detail');
+      if (time) time.setAttribute('data-label', t('mobileLabelTime'));
+      if (action) action.setAttribute('data-label', t('mobileLabelAction'));
+      if (target) target.setAttribute('data-label', t('mobileLabelTarget'));
+      if (detail) detail.setAttribute('data-label', t('mobileLabelDetail'));
+    });
+  };
+
  document.querySelectorAll('time.audit-local-time[datetime]').forEach(function (el) {
    var raw = el.getAttribute('datetime');
    var d = raw ? new Date(raw) : null;
@@ -149,6 +228,7 @@
      el.title = raw + ' (UTC)';
    }
  });
+  applyLang();
 })();
 </script>
 </body>
--- a/crates/secrets-mcp/templates/entries.html
+++ b/crates/secrets-mcp/templates/entries.html
--- a/crates/secrets-mcp/templates/i18n.js
+++ b/crates/secrets-mcp/templates/i18n.js
@@ -0,0 +1,76 @@
+var I18N_SHARED = {
+  'zh-CN': {
+    pageTitleBase: 'Secrets',
+    navMcp: 'MCP',
+    navEntries: '条目',
+    navAudit: '审计',
+    signOut: '退出',
+    mobileLabelTime: '时间',
+    mobileLabelAction: '动作',
+    mobileLabelTarget: '目标',
+    mobileLabelDetail: '详情'
+  },
+  'zh-TW': {
+    pageTitleBase: 'Secrets',
+    navMcp: 'MCP',
+    navEntries: '條目',
+    navAudit: '審計',
+    signOut: '登出',
+    mobileLabelTime: '時間',
+    mobileLabelAction: '動作',
+    mobileLabelTarget: '目標',
+    mobileLabelDetail: '詳情'
+  },
+  en: {
+    pageTitleBase: 'Secrets',
+    navMcp: 'MCP',
+    navEntries: 'Entries',
+    navAudit: 'Audit',
+    signOut: 'Sign out',
+    mobileLabelTime: 'Time',
+    mobileLabelAction: 'Action',
+    mobileLabelTarget: 'Target',
+    mobileLabelDetail: 'Detail'
+  }
+};
+
+var currentLang = localStorage.getItem('lang') || 'zh-CN';
+var I18N_PAGE = {};
+
+function t(key) {
+  var dict = I18N_PAGE[currentLang] || I18N_PAGE['en'] || {};
+  var val = dict[key] || (I18N_SHARED[currentLang] && I18N_SHARED[currentLang][key]) || (I18N_SHARED.en && I18N_SHARED.en[key]) || key;
+  return val;
+}
+
+function tf(key, vars) {
+  var tpl = t(key);
+  return Object.keys(vars || {}).reduce(function (acc, k) {
+    return acc.replace(new RegExp('\\{' + k + '\\}', 'g'), String(vars[k]));
+  }, tpl);
+}
+
+function applyLang() {
+  document.documentElement.lang = currentLang;
+  var title = t('pageTitle');
+  if (title) document.title = title;
+  document.querySelectorAll('[data-i18n]').forEach(function (el) {
+    var key = el.getAttribute('data-i18n');
+    el.textContent = t(key);
+  });
+  document.querySelectorAll('[data-i18n-ph]').forEach(function (el) {
+    var key = el.getAttribute('data-i18n-ph');
+    el.placeholder = t(key);
+  });
+  document.querySelectorAll('.lang-btn').forEach(function (btn) {
+    var map = { 'zh-CN': '简', 'zh-TW': '繁', en: 'EN' };
+    btn.classList.toggle('active', btn.textContent === map[currentLang]);
+  });
+  if (typeof applyPageLang === 'function') applyPageLang();
+}
+
+window.setLang = function (lang) {
+  currentLang = lang;
+  localStorage.setItem('lang', lang);
+  applyLang();
+};
--- a/deploy/.env.example
+++ b/deploy/.env.example
@@ -31,7 +31,23 @@ GOOGLE_CLIENT_SECRET=
 # ─── 日志（可选）──────────────────────────────────────────────────────
 # RUST_LOG=secrets_mcp=debug

-# ─── 注意 ─────────────────────────────────────────────────────────────
-# SERVER_MASTER_KEY 已不再需要。
-# 新架构（E2EE）中，加密密钥由用户密码短语在客户端本地派生，服务端不持有原始密钥。
-# 仅在需要迁移旧版 wrapped_key 数据时临时启用。
+# ─── 数据库连接池（可选）──────────────────────────────────────────────
+# 最大连接数，默认 10
+# SECRETS_DATABASE_POOL_SIZE=10
+# 获取连接超时秒数，默认 5
+# SECRETS_DATABASE_ACQUIRE_TIMEOUT=5
+
+# ─── 限流（可选）──────────────────────────────────────────────────────
+# 全局限流速率（req/s），默认 100
+# RATE_LIMIT_GLOBAL_PER_SECOND=100
+# 全局限流突发量，默认 200
+# RATE_LIMIT_GLOBAL_BURST=200
+# 单 IP 限流速率（req/s），默认 20
+# RATE_LIMIT_IP_PER_SECOND=20
+# 单 IP 限流突发量，默认 40
+# RATE_LIMIT_IP_BURST=40
+
+# ─── 代理信任（可选）─────────────────────────────────────────────────
+# 设为 1/true/yes 时从 X-Forwarded-For / X-Real-IP 提取客户端 IP
+# 仅在反代环境下启用，否则客户端可伪造 IP 绕过限流
+# TRUST_PROXY=1
--- a/migrations/001_nn_schema.sql
+++ b/migrations/001_nn_schema.sql
@@ -1,126 +0,0 @@
-- Entry-Secret N:N migration (manual SQL)
-- Safe to re-run: uses IF EXISTS/IF NOT EXISTS guards.
-
-BEGIN;
-
-- 1) secrets: add new columns
-ALTER TABLE secrets
-    ADD COLUMN IF NOT EXISTS user_id UUID REFERENCES users(id) ON DELETE SET NULL;
-ALTER TABLE secrets
-    ADD COLUMN IF NOT EXISTS type VARCHAR(64) NOT NULL DEFAULT 'text';
-
-- 2) rename field_name -> name (idempotent)
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_name = 'secrets' AND column_name = 'field_name'
-    ) THEN
-        ALTER TABLE secrets RENAME COLUMN field_name TO name;
-    END IF;
-END $$;
-
-- 3) create join table
-CREATE TABLE IF NOT EXISTS entry_secrets (
-    entry_id UUID NOT NULL REFERENCES entries(id) ON DELETE CASCADE,
-    secret_id UUID NOT NULL REFERENCES secrets(id) ON DELETE CASCADE,
-    sort_order INT NOT NULL DEFAULT 0,
-    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
-    PRIMARY KEY (entry_id, secret_id)
-);
-CREATE INDEX IF NOT EXISTS idx_entry_secrets_secret_id ON entry_secrets(secret_id);
-
-- 4) backfill user_id and relationship from old secrets.entry_id
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_name = 'secrets' AND column_name = 'entry_id'
-    ) THEN
-        UPDATE secrets s
-        SET user_id = e.user_id
-        FROM entries e
-        WHERE s.entry_id = e.id AND s.user_id IS NULL;
-
-        INSERT INTO entry_secrets(entry_id, secret_id, sort_order)
-        SELECT entry_id, id, 0
-        FROM secrets
-        WHERE entry_id IS NOT NULL
-        ON CONFLICT DO NOTHING;
-    END IF;
-END $$;
-
-- 5) backfill secret types
-UPDATE secrets SET type = 'pem' WHERE name IN ('ssh_key');
-UPDATE secrets SET type = 'password' WHERE name IN ('password');
-UPDATE secrets SET type = 'phone' WHERE name LIKE 'phone%';
-UPDATE secrets SET type = 'url' WHERE name IN ('webhook_url', 'address');
-UPDATE secrets
-SET type = 'token'
-WHERE name IN (
-    'access_key_id',
-    'access_key_secret',
-    'global_api_key',
-    'api_key',
-    'secret_key',
-    'personal_access_token',
-    'runner_token',
-    'GOOGLE_CLIENT_ID',
-    'GOOGLE_CLIENT_SECRET'
-);
-
-- 6) drop old entry_id path
-ALTER TABLE secrets DROP CONSTRAINT IF EXISTS secrets_entry_id_fkey;
-DROP INDEX IF EXISTS idx_secrets_entry_id;
-ALTER TABLE secrets DROP CONSTRAINT IF EXISTS secrets_entry_id_field_name_key;
-ALTER TABLE secrets DROP CONSTRAINT IF EXISTS secrets_entry_id_name_key;
-ALTER TABLE secrets DROP COLUMN IF EXISTS entry_id;
-
-- 7) add indexes for new access paths
-CREATE INDEX IF NOT EXISTS idx_secrets_user_id
-    ON secrets(user_id) WHERE user_id IS NOT NULL;
-DO $$
-DECLARE
-    duplicate_samples TEXT;
-BEGIN
-    SELECT string_agg(
-               format('user_id=%s, name=%s, count=%s', t.user_id, t.name, t.cnt),
-               E'\n'
-           )
-    INTO duplicate_samples
-    FROM (
-        SELECT user_id::TEXT AS user_id, name, COUNT(*) AS cnt
-        FROM secrets
-        WHERE user_id IS NOT NULL
-        GROUP BY user_id, name
-        HAVING COUNT(*) > 1
-        ORDER BY cnt DESC, user_id, name
-        LIMIT 20
-    ) t;
-
-    IF duplicate_samples IS NOT NULL THEN
-        RAISE EXCEPTION
-            'Cannot enforce unique constraint on secrets(user_id, name). Duplicates found:%',
-            E'\n' || duplicate_samples
-            USING HINT = 'Please deduplicate conflicting rows, then rerun migration.';
-    END IF;
-END $$;
-CREATE UNIQUE INDEX IF NOT EXISTS idx_secrets_unique_user_name
-    ON secrets(user_id, name) WHERE user_id IS NOT NULL;
-CREATE INDEX IF NOT EXISTS idx_secrets_name ON secrets(name);
-CREATE INDEX IF NOT EXISTS idx_secrets_type ON secrets(type);
-
-- 8) secrets_history: rename and remove entry-scoped columns
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1
-        FROM information_schema.columns
-        WHERE table_name = 'secrets_history' AND column_name = 'field_name'
-    ) THEN
-        ALTER TABLE secrets_history RENAME COLUMN field_name TO name;
-    END IF;
-END $$;
-ALTER TABLE secrets_history DROP COLUMN IF EXISTS entry_id;
-ALTER TABLE secrets_history DROP COLUMN IF EXISTS entry_version;
-
-COMMIT;
--- a/migrations/002_data_cleanup.sql
+++ b/migrations/002_data_cleanup.sql
@@ -1,67 +0,0 @@
-- Metadata cleanup migration (manual SQL)
-- Keep tags/type as dedicated columns; remove duplicated metadata keys.
-
-BEGIN;
-
-- 1) Promote metadata.type -> entries.type when present.
-UPDATE entries
-SET type = metadata->>'type'
-WHERE metadata->>'type' IS NOT NULL
-  AND metadata->>'type' <> '';
-
-- 2) Remove metadata.type.
-UPDATE entries
-SET metadata = metadata - 'type'
-WHERE metadata ? 'type';
-
-- 3) Remove metadata.environment (duplicated by tags prod/dev).
-UPDATE entries
-SET metadata = metadata - 'environment'
-WHERE metadata ? 'environment';
-
-- 4) Remove metadata.account when equal to folder.
-UPDATE entries
-SET metadata = metadata - 'account'
-WHERE metadata->>'account' = folder;
-
-- 5) Normalize manufacturer -> provider.
-UPDATE entries
-SET metadata = (metadata - 'manufacturer')
-    || jsonb_build_object('provider', metadata->>'manufacturer')
-WHERE metadata ? 'manufacturer'
-  AND NOT metadata ? 'provider';
-
-UPDATE entries
-SET metadata = metadata - 'manufacturer'
-WHERE metadata ? 'manufacturer'
-  AND metadata ? 'provider';
-
-- 6) Drop ssh_key_format (moved to secrets.type).
-UPDATE entries
-SET metadata = metadata - 'ssh_key_format'
-WHERE metadata ? 'ssh_key_format';
-
-- 7) Remove display_name when duplicated by name.
-UPDATE entries
-SET metadata = metadata - 'display_name'
-WHERE metadata->>'display_name' = name;
-
-- 8) Condense server_* metadata into server_ref.
-UPDATE entries
-SET metadata = metadata
-    - 'server_account'
-    - 'server_hostname'
-    - 'server_location'
-    - 'server_public_ip'
-    || CASE
-        WHEN metadata ? 'server_entry_name'
-            THEN jsonb_build_object('server_ref', metadata->>'server_entry_name')
-        ELSE '{}'::jsonb
-    END
-WHERE metadata ? 'server_entry_name' OR metadata ? 'server_account';
-
-UPDATE entries
-SET metadata = metadata - 'server_entry_name'
-WHERE metadata ? 'server_entry_name';
-
-COMMIT;
--- a/scripts/cleanup-orphan-user-ids.sql
+++ b/scripts/cleanup-orphan-user-ids.sql
@@ -1,22 +0,0 @@
-- Run against prod BEFORE deploying secrets-mcp with FK migration.
-- Requires: write access to SECRETS_DATABASE_URL.
-- Example: psql "$SECRETS_DATABASE_URL" -v ON_ERROR_STOP=1 -f scripts/cleanup-orphan-user-ids.sql
-
-BEGIN;
-
-UPDATE entries
-SET user_id = NULL
-WHERE user_id IS NOT NULL
-  AND NOT EXISTS (SELECT 1 FROM users u WHERE u.id = entries.user_id);
-
-UPDATE entries_history
-SET user_id = NULL
-WHERE user_id IS NOT NULL
-  AND NOT EXISTS (SELECT 1 FROM users u WHERE u.id = entries_history.user_id);
-
-UPDATE audit_log
-SET user_id = NULL
-WHERE user_id IS NOT NULL
-  AND NOT EXISTS (SELECT 1 FROM users u WHERE u.id = audit_log.user_id);
-
-COMMIT;
--- a/scripts/migrate-db-prod-to-nn-test.sh
+++ b/scripts/migrate-db-prod-to-nn-test.sh
@@ -1,81 +0,0 @@
-#!/usr/bin/env bash
-# Migrate PostgreSQL data from secrets-mcp-prod to secrets-nn-test.
-#
-# Prereqs: pg_dump and pg_restore (PostgreSQL client tools) on PATH.
-# TLS: Use the same connection parameters as your MCP / app (e.g. sslmode=verify-full
-#      and PGSSLROOTCERT if needed). If local psql fails with "certificate verify failed",
-#      run this script from a host that trusts the server CA, or set PGSSLROOTCERT.
-#
-# Usage:
-#   export SOURCE_DATABASE_URL='postgres://USER:PASS@host:5432/secrets-mcp-prod?sslmode=verify-full'
-#   export TARGET_DATABASE_URL='postgres://USER:PASS@host:5432/secrets-nn-test?sslmode=verify-full'
-#   ./scripts/migrate-db-prod-to-nn-test.sh
-#
-# Options (env):
-#   BACKUP_TARGET_FIRST=1     # default: dump target to ./backup-secrets-nn-test-<timestamp>.dump before restore
-#   RUN_NN_SQL=1               # default: run migrations/001_nn_schema.sql then 002_data_cleanup.sql on target after restore
-#   SKIP_TARGET_BACKUP=1       # skip target backup
-#
-# WARNINGS:
-# - pg_restore with --clean --if-exists drops objects that exist in the dump; target DB is replaced
-#   to match the logical content of the source dump (same as typical full restore).
-# - Optionally keep a manual dump of the target before proceeding.
-# - 001_nn_schema.sql will fail if secrets has duplicate (user_id, name) after backfill; fix data first.
-
-set -euo pipefail
-
-ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
-cd "$ROOT"
-
-SOURCE_URL="${SOURCE_DATABASE_URL:-}"
-TARGET_URL="${TARGET_DATABASE_URL:-}"
-
-if [[ -z "$SOURCE_URL" || -z "$TARGET_URL" ]]; then
-  echo "Set SOURCE_DATABASE_URL and TARGET_DATABASE_URL (postgres URLs)." >&2
-  exit 1
-fi
-
-if ! command -v pg_dump >/dev/null || ! command -v pg_restore >/dev/null; then
-  echo "pg_dump and pg_restore are required." >&2
-  exit 1
-fi
-
-TS="$(date +%Y%m%d%H%M%S)"
-DUMP_FILE="${DUMP_FILE:-$ROOT/tmp/secrets-mcp-prod-${TS}.dump}"
-mkdir -p "$(dirname "$DUMP_FILE")"
-
-if [[ "${EXCLUDE_TOWER_SESSIONS:-}" == "1" ]]; then
-  echo "==> Excluding schema tower_sessions from dump"
-  pg_dump "$SOURCE_URL" -Fc --no-owner --no-acl --exclude-schema=tower_sessions -f "$DUMP_FILE"
-else
-  echo "==> Dumping source (custom format) -> $DUMP_FILE"
-  pg_dump "$SOURCE_URL" -Fc --no-owner --no-acl -f "$DUMP_FILE"
-fi
-
-if [[ "${SKIP_TARGET_BACKUP:-}" != "1" && "${BACKUP_TARGET_FIRST:-1}" == "1" ]]; then
-  BACKUP_FILE="$ROOT/tmp/secrets-nn-test-before-${TS}.dump"
-  echo "==> Backing up target -> $BACKUP_FILE"
-  pg_dump "$TARGET_URL" -Fc --no-owner --no-acl -f "$BACKUP_FILE" || {
-    echo "Target backup failed (empty DB is OK). Continuing." >&2
-  }
-fi
-
-echo "==> Restoring into target (--clean --if-exists)"
-pg_restore -d "$TARGET_URL" --no-owner --no-acl --clean --if-exists --verbose "$DUMP_FILE"
-
-if [[ "${RUN_NN_SQL:-1}" == "1" ]]; then
-  if [[ ! -f "$ROOT/migrations/001_nn_schema.sql" ]]; then
-    echo "migrations/001_nn_schema.sql not found; skip NN SQL." >&2
-  else
-    echo "==> Applying migrations/001_nn_schema.sql on target"
-    psql "$TARGET_URL" -v ON_ERROR_STOP=1 -f "$ROOT/migrations/001_nn_schema.sql"
-  fi
-  if [[ -f "$ROOT/migrations/002_data_cleanup.sql" ]]; then
-    echo "==> Applying migrations/002_data_cleanup.sql on target"
-    psql "$TARGET_URL" -v ON_ERROR_STOP=1 -f "$ROOT/migrations/002_data_cleanup.sql"
-  fi
-fi
-
-echo "==> Done. Suggested verification:"
-echo "    psql \"\$TARGET_DATABASE_URL\" -c \"SELECT COUNT(*) FROM entries; SELECT COUNT(*) FROM secrets; SELECT COUNT(*) FROM entry_secrets;\""
-echo "    ./scripts/release-check.sh   # optional app-side sanity"
--- a/scripts/migrate-v0.3.0.sql
+++ b/scripts/migrate-v0.3.0.sql
@@ -1,194 +0,0 @@
-- ============================================================================
-- migrate-v0.3.0.sql
-- Schema migration from v0.2.x → v0.3.0
--
-- Changes:
--   • entries:         namespace → folder, kind → type; add notes column
--   • audit_log:       namespace → folder, kind → type
--   • entries_history: namespace → folder, kind → type; add user_id column
--   • Unique index: (user_id, name) → (user_id, folder, name)
--     Same name in different folders is now allowed; no rename needed.
--
-- Safe to run multiple times (fully idempotent).
-- Preserves all data in users, entries, secrets.
-- ============================================================================
-
-BEGIN;
-
-- ── entries: rename namespace→folder, kind→type ──────────────────────────────
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries' AND column_name = 'namespace'
-    ) THEN
-        ALTER TABLE entries RENAME COLUMN namespace TO folder;
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries' AND column_name = 'kind'
-    ) THEN
-        ALTER TABLE entries RENAME COLUMN kind TO type;
-    END IF;
-END $$;
-
-- Set NOT NULL + default for folder/type in entries
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries' AND column_name = 'folder'
-    ) THEN
-        UPDATE entries SET folder = '' WHERE folder IS NULL;
-        ALTER TABLE entries ALTER COLUMN folder SET NOT NULL;
-        ALTER TABLE entries ALTER COLUMN folder SET DEFAULT '';
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries' AND column_name = 'type'
-    ) THEN
-        UPDATE entries SET type = '' WHERE type IS NULL;
-        ALTER TABLE entries ALTER COLUMN type SET NOT NULL;
-        ALTER TABLE entries ALTER COLUMN type SET DEFAULT '';
-    END IF;
-END $$;
-
-- Add notes column to entries if missing
-ALTER TABLE entries ADD COLUMN IF NOT EXISTS notes TEXT NOT NULL DEFAULT '';
-
-- ── audit_log: rename namespace→folder, kind→type ────────────────────────────
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'audit_log' AND column_name = 'namespace'
-    ) THEN
-        ALTER TABLE audit_log RENAME COLUMN namespace TO folder;
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'audit_log' AND column_name = 'kind'
-    ) THEN
-        ALTER TABLE audit_log RENAME COLUMN kind TO type;
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'audit_log' AND column_name = 'folder'
-    ) THEN
-        UPDATE audit_log SET folder = '' WHERE folder IS NULL;
-        ALTER TABLE audit_log ALTER COLUMN folder SET NOT NULL;
-        ALTER TABLE audit_log ALTER COLUMN folder SET DEFAULT '';
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'audit_log' AND column_name = 'type'
-    ) THEN
-        UPDATE audit_log SET type = '' WHERE type IS NULL;
-        ALTER TABLE audit_log ALTER COLUMN type SET NOT NULL;
-        ALTER TABLE audit_log ALTER COLUMN type SET DEFAULT '';
-    END IF;
-END $$;
-
-ALTER TABLE audit_log DROP COLUMN IF EXISTS actor;
-
-- ── entries_history: rename namespace→folder, kind→type; add user_id ─────────
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries_history' AND column_name = 'namespace'
-    ) THEN
-        ALTER TABLE entries_history RENAME COLUMN namespace TO folder;
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries_history' AND column_name = 'kind'
-    ) THEN
-        ALTER TABLE entries_history RENAME COLUMN kind TO type;
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries_history' AND column_name = 'folder'
-    ) THEN
-        UPDATE entries_history SET folder = '' WHERE folder IS NULL;
-        ALTER TABLE entries_history ALTER COLUMN folder SET NOT NULL;
-        ALTER TABLE entries_history ALTER COLUMN folder SET DEFAULT '';
-    END IF;
-END $$;
-
-DO $$ BEGIN
-    IF EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'entries_history' AND column_name = 'type'
-    ) THEN
-        UPDATE entries_history SET type = '' WHERE type IS NULL;
-        ALTER TABLE entries_history ALTER COLUMN type SET NOT NULL;
-        ALTER TABLE entries_history ALTER COLUMN type SET DEFAULT '';
-    END IF;
-END $$;
-
-ALTER TABLE entries_history ADD COLUMN IF NOT EXISTS user_id UUID;
-ALTER TABLE entries_history DROP COLUMN IF EXISTS actor;
-
-- ── secrets_history: drop actor column ───────────────────────────────────────
-ALTER TABLE secrets_history DROP COLUMN IF EXISTS actor;
-
-- ── Rebuild unique indexes: (user_id, folder, name) ──────────────────────────
-- Note: folder is now part of the key, so same name in different folders is
-- naturally distinct — no rename of existing rows needed.
-DROP INDEX IF EXISTS idx_entries_unique_legacy;
-DROP INDEX IF EXISTS idx_entries_unique_user;
-
-CREATE UNIQUE INDEX IF NOT EXISTS idx_entries_unique_legacy
-    ON entries(folder, name)
-    WHERE user_id IS NULL;
-
-CREATE UNIQUE INDEX IF NOT EXISTS idx_entries_unique_user
-    ON entries(user_id, folder, name)
-    WHERE user_id IS NOT NULL;
-
-- ── Replace old namespace/kind indexes with folder/type ──────────────────────
-DROP INDEX IF EXISTS idx_entries_namespace;
-DROP INDEX IF EXISTS idx_entries_kind;
-DROP INDEX IF EXISTS idx_audit_log_ns_kind;
-DROP INDEX IF EXISTS idx_entries_history_ns_kind_name;
-
-CREATE INDEX IF NOT EXISTS idx_entries_folder
-    ON entries(folder) WHERE folder <> '';
-CREATE INDEX IF NOT EXISTS idx_entries_type
-    ON entries(type) WHERE type <> '';
-CREATE INDEX IF NOT EXISTS idx_entries_user_id
-    ON entries(user_id) WHERE user_id IS NOT NULL;
-CREATE INDEX IF NOT EXISTS idx_audit_log_folder_type
-    ON audit_log(folder, type);
-CREATE INDEX IF NOT EXISTS idx_entries_history_folder_type_name
-    ON entries_history(folder, type, name, version DESC);
-CREATE INDEX IF NOT EXISTS idx_entries_history_user_id
-    ON entries_history(user_id) WHERE user_id IS NOT NULL;
-
-COMMIT;
-
-- ── Verification queries (run these manually to confirm) ─────────────────────
-- SELECT column_name, data_type FROM information_schema.columns
--   WHERE table_name = 'entries' ORDER BY ordinal_position;
-- SELECT indexname, indexdef FROM pg_indexes WHERE tablename = 'entries';
-- SELECT COUNT(*) FROM entries;
-- SELECT COUNT(*) FROM users;
-- SELECT COUNT(*) FROM secrets;
--- a/scripts/release-check.sh
+++ b/scripts/release-check.sh
@@ -11,7 +11,7 @@ tag="secrets-mcp-${version}"
 echo "==> 当前 secrets-mcp 版本: ${version}"
 echo "==> 检查是否已存在 tag: ${tag}"

-if git rev-parse "refs/tags/${tag}" >/dev/null 2>&1; then
+if jj log --no-graph --revisions "tag(${tag})" --limit 1 >/dev/null 2>&1; then
  echo "提示: 已存在 tag ${tag}，将按重复构建处理，不阻断检查。"
  echo "如需创建新的发布版本，请先 bump crates/secrets-mcp/Cargo.toml 中的 version。"
 else
Author	SHA1	Message	Date
voson	cab234cfcb	feat(secrets-mcp): 增强 MCP 请求日志与 encryption_key 参数支持 All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 3m28s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 1m36s Details logging.rs: - 每条 MCP POST 日志新增 auth_key（Bearer token 前12字符掩码）、 enc_key（X-Encryption-Key 前4后4字符指纹，如 146b…5516(64) 或 absent）、 user_id、tool_args（白名单非敏感参数摘要）字段 - 新增辅助函数 mask_bearer / mask_enc_key / extract_tool_args / summarize_value tools.rs: - extract_enc_key 成功路径增加 debug 级指纹日志（raw_len/trimmed_len/prefix/suffix） - 新增 extract_enc_key_or_arg / require_user_and_key_or_arg：优先使用参数传入的密钥， fallback 到 X-Encryption-Key 头，绕过 Cursor Chat MCP 头透传异常 - GetSecretInput / AddInput / UpdateInput / ExportInput / EnvMapInput 各增加可选 encryption_key 字段，对应工具实现改用 require_user_and_key_or_arg	2026-04-06 11:03:01 +08:00
voson	e0fee639c1	release(secrets-mcp): 0.5.7 All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 5m8s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 1m36s Details	2026-04-05 17:07:31 +08:00
voson	7c53bfb782	feat(core): entry 历史附带关联 secret 密文快照，rollback 可恢复 N:N 与密文 - db: metadata_with_secret_snapshot / strip / parse 辅助 - add/update/delete/rollback 在写 entries_history 前合并快照 - rollback: 按历史快照同步 entry_secrets、更新或插入 secrets - 满足 clippy collapsible_if	2026-04-05 17:06:53 +08:00
voson	63cb3a8216	release(secrets-mcp): 0.5.6 All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 5m8s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 1m36s Details 修复 OAuth 解绑时非法聚合 FOR UPDATE，Web OAuth 审计 IP 与 TRUST_PROXY 对齐并校验 IP，账号绑定写入 oauth_state 失败时回滚 bind 标记。回滚条目时恢复 folder/type，导入冲突检查在 DB 失败时传播错误，MCP delete/history 要求已登录用户，全局请求体 10MiB 限制。CI 部署支持 DEPLOY_KNOWN_HOSTS，默认 accept-new；文档与 deploy 示例补充连接池、限流、TRUST_PROXY。移除含明文凭据的 sync-test-to-prod 脚本。	2026-04-05 15:29:03 +08:00
voson	2b994141b8	release(secrets-mcp): 0.5.5 — 生产 CORS 显式 allow_methods，修复 tower-http 启动 panic All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 4m59s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 6s Details credentials + wildcard methods/headers 被 tower-http 禁止；生产环境改为 GET/POST/PATCH/DELETE/OPTIONS 白名单。	2026-04-05 12:27:40 +08:00
voson	9d6ac5c13a	release(secrets-mcp): 0.5.4 — Web 分页修正与 hex 解码；批量删除上限；MCP @ 路径检测 Some checks failed Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 4m55s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Failing after 6s Details	2026-04-05 12:14:40 +08:00
voson	1860cce86c	release(secrets-mcp): 0.5.3 — 审计日志分页与 Web；CONTRIBUTING；文档与模板修正	2026-04-05 11:34:04 +08:00
agent	dd24f7cc44	release: secrets-mcp 0.5.2 Some checks failed Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 6m7s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Failing after 6s Details Bump version: secrets-mcp-0.5.1 tag already existed while crates had further changes. Made-with: Cursor	2026-04-05 10:38:50 +08:00
voson	aefad33870	chore(secrets-mcp): 0.5.1 — 移除 entry type 归一化，MCP 参数兼容字符串形式 All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 4m22s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 6s Details - 去掉 taxonomy 对 entry type 的自动映射与 metadata.subtype 回填；仅 trim 后入库 - MCP tools：Vec/Map/bool 等可选字段支持 JSON 内嵌字符串解析，并改进解析失败提示 - 新增 deser 单元测试；README/AGENTS 与 models 注释同步 Made-with: Cursor	2026-04-04 21:27:33 +08:00
voson	0ffb81e57f	feat: entry update links existing secrets (link_secret_names) All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 4m19s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 6s Details - secrets-core: update flow validates and applies secret links - secrets-mcp: MCP tool params and UI for managing links on edit - Align errors and templates; minor crypto/.gitignore tweaks Made-with: Cursor	2026-04-04 20:30:32 +08:00
voson	4a1654c820	docs: update MCP tools list, env vars, taxonomy and deploy structure	2026-04-04 18:04:35 +08:00
voson	a15e2eaf4a	docs: align README with removed SQL migration scripts Made-with: Cursor	2026-04-04 17:58:26 +08:00
voson	1518388374	chore(release): secrets-mcp 0.4.0 All checks were successful Secrets MCP — Build & Release / 检查 / 构建 / 发版 (push) Successful in 4m19s Details Secrets MCP — Build & Release / 部署 secrets-mcp (push) Successful in 6s Details Bump version for the N:N entry_secrets data model and related MCP/Web changes. Remove superseded SQL migration artifacts; rely on auto-migrate. Add structured errors, taxonomy normalization, and web i18n helpers. Made-with: Cursor	2026-04-04 17:58:12 +08:00