test: gate AppError helper tests behind server feature

Replace #[allow(dead_code)] on server-only helpers with #[cfg(feature = "server")]
to make the server/WASM split explicit and avoid compiling unused server logic
into the WASM frontend.

- Gate password/session/auth/comment helpers and model parsers with server feature
- Gate related imports and tests accordingly
- Remove genuinely unused CreatePostRequest and CreateCommentRequest
- Keep #[allow(dead_code)] for true dead code (stub methods, unused public APIs)
- Use #[cfg(any(target_arch = "wasm32", test))] for THEME_KEY
- Update AGENTS.md note

AGENTS.md

@@ -71,7 +71,7 @@ Dioxus 0.7 fullstack project with **two independent gates** — the most common
 
 **Stub pattern**: `src/db/mod.rs` provides a `DummyPool` when `server` feature is disabled — do not remove.
 
-**Dead code allowances**: `src/auth/password.rs` and `src/auth/session.rs` carry `#[allow(dead_code)]` because the compiler sees them as unused in WASM builds where server function bodies are stripped.
+**Server-only helpers**: `src/auth/password.rs`, `src/auth/session.rs`, `src/api/auth.rs`, `src/api/comments/helpers.rs`, and several model helper methods are gated with `#[cfg(feature = "server")]` because they are only called from server function bodies, which are stripped in WASM builds.
 
 ## Dual API Architecture
 
@@ -165,6 +165,6 @@ Most tests use `#[cfg(all(test, feature = "server"))]` — they only run when th
 
 ## Notes
 
-- `rand` + `getrandom` with `js` feature are required for Argon2 salt generation in WASM builds.
+- `rand` is optional and only enabled by the `server` feature; it is not compiled into the WASM frontend.
 - `#[allow(unused_mut, unused_variables)]` on `Write` component is intentional — `mut` signals are used in `#[cfg(target_arch = "wasm32")]` blocks stripped in server builds.
 - Server uses incremental rendering with 300s cache (`IncrementalRendererConfig` in `src/main.rs`).

Cargo.lock

@@ -5309,7 +5309,6 @@ dependencies = [
  "deadpool-postgres",
  "dioxus",
  "dotenvy",
- "getrandom 0.2.17",
  "governor",
  "hex",
  "http",

Cargo.toml

@@ -9,22 +9,21 @@ serde = { version = "1.0", features = ["derive"] }
 tokio = { version = "1.52", features = ["rt-multi-thread", "macros", "fs", "time", "sync"], optional = true }
 tokio-postgres = { version = "0.7", features = ["with-chrono-0_4"], optional = true }
 deadpool-postgres = { version = "0.14", optional = true }
-argon2 = "0.5"
+argon2 = { version = "0.5", optional = true }
-uuid = { version = "1", features = ["v4", "js"] }
+uuid = { version = "1", features = ["v4"], optional = true }
 chrono = { version = "0.4", features = ["serde"] }
-regex = "1.12"
+regex = { version = "1.12", optional = true }
-pulldown-cmark = "0.13"
+pulldown-cmark = { version = "0.13", optional = true }
 dotenvy = { version = "0.15", optional = true }
 tracing = { version = "0.1", optional = true, features = ["release_max_level_info"] }
 tracing-subscriber = { version = "0.3", optional = true }
 tower-http = { version = "0.6", optional = true }
-rand = { version = "0.8", features = ["getrandom"] }
+rand = { version = "0.8", features = ["getrandom"], optional = true }
-getrandom = { version = "0.2", features = ["js"] }
+http = { version = "1", optional = true }
-http = "1"
 axum = { version = "0.8", optional = true, features = ["multipart"] }
 serde_json = "1.0"
-sha2 = "0.10"
+sha2 = { version = "0.10", optional = true }
-hex = "0.4"
+hex = { version = "0.4", optional = true }
 lol_html = { version = "2", optional = true }
 syntect = { version = "5", default-features = false, features = ["default-syntaxes", "default-themes", "default-fancy", "html", "parsing", "dump-load", "yaml-load"], optional = true }
 # NOTE: WebP decoder is intentionally excluded from the image crate.
@@ -60,6 +59,14 @@ server = [
     "dep:tokio",
     "dep:tokio-postgres",
     "dep:deadpool-postgres",
+    "dep:argon2",
+    "dep:uuid",
+    "dep:regex",
+    "dep:pulldown-cmark",
+    "dep:rand",
+    "dep:http",
+    "dep:sha2",
+    "dep:hex",
     "dep:dotenvy",
     "dep:tracing",
     "dep:tracing-subscriber",

src/api/auth.rs

@@ -23,7 +23,7 @@ use crate::db::pool::get_conn;
 use crate::models::user::{User, UserRole};
 use crate::models::user::PublicUser;
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 fn validate_username(username: &str) -> Result<(), String> {
     if username.len() < 3 || username.len() > 50 {
         return Err("用户名长度必须在 3-50 字符之间".to_string());
@@ -34,7 +34,7 @@ fn validate_username(username: &str) -> Result<(), String> {
     Ok(())
 }
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 fn validate_email(email: &str) -> Result<(), String> {
     let re = regex::Regex::new(r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$").unwrap();
     if !re.is_match(email) {
@@ -43,7 +43,7 @@ fn validate_email(email: &str) -> Result<(), String> {
     Ok(())
 }
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 fn validate_password(password: &str) -> Result<(), String> {
     if password.len() < 8 {
         return Err("密码长度至少 8 位".to_string());
@@ -387,7 +387,7 @@ pub async fn get_current_admin_user() -> Result<User, AppError> {
     Ok(user)
 }
 
-#[cfg(test)]
+#[cfg(all(test, feature = "server"))]
 mod tests {
     use super::*;
 

src/api/comments/helpers.rs

@@ -1,7 +1,6 @@
 //! 评论模块的辅助函数：数据转换、校验、哈希与头像生成。
 //!
-//! 大部分工具函数仅在 `feature = "server"` 启用的服务端构建中使用；
+//! 所有工具函数仅在 `feature = "server"` 启用的服务端构建中使用。
-//! 校验函数同时在前端构建中保留签名，避免编译器提示未使用。
 
 #![allow(clippy::unused_unit, deprecated)]
 
@@ -87,7 +86,7 @@ pub fn format_relative_time(dt: chrono::DateTime<chrono::Utc>) -> String {
 }
 
 /// 校验评论作者昵称：非空且不超过 50 字符。
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 pub fn validate_comment_name(name: &str) -> Result<(), String> {
     let trimmed = name.trim();
     if trimmed.is_empty() {
@@ -100,7 +99,7 @@ pub fn validate_comment_name(name: &str) -> Result<(), String> {
 }
 
 /// 校验评论作者邮箱格式。
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 pub fn validate_comment_email(email: &str) -> Result<(), String> {
     let re = regex::Regex::new(r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$").unwrap();
     if !re.is_match(email.trim()) {
@@ -110,7 +109,7 @@ pub fn validate_comment_email(email: &str) -> Result<(), String> {
 }
 
 /// 校验评论作者网址：为空时允许，非空时必须以 http:// 或 https:// 开头且不超过 200 字符。
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 pub fn validate_comment_url(url: &str) -> Result<(), String> {
     let trimmed = url.trim();
     if trimmed.is_empty() {
@@ -127,7 +126,7 @@ pub fn validate_comment_url(url: &str) -> Result<(), String> {
 }
 
 /// 校验评论内容：非空且不超过 10000 字符。
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 pub fn validate_comment_content(content: &str) -> Result<(), String> {
     let trimmed = content.trim();
     if trimmed.is_empty() {

src/api/comments/types.rs

@@ -3,24 +3,6 @@
 use crate::models::comment::{AdminComment, PublicComment};
 use serde::{Deserialize, Serialize};
 
-/// 创建评论请求体（客户端使用）。
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[allow(dead_code)]
-pub struct CreateCommentRequest {
-    /// 目标文章 id。
-    pub post_id: i32,
-    /// 父评论 id，顶层评论为 None。
-    pub parent_id: Option<i64>,
-    /// 评论者昵称。
-    pub author_name: String,
-    /// 评论者邮箱。
-    pub author_email: String,
-    /// 评论者个人网址。
-    pub author_url: Option<String>,
-    /// 评论 Markdown 原文。
-    pub content_md: String,
-}
-
 /// 创建/审核/删除评论的统一响应结构。
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct CommentResponse {
@@ -51,6 +33,9 @@ pub struct CommentTreeResponse {
 }
 
 /// 评论计数响应。
+///
+/// 此类型仅在服务端函数体中构造；保留 `#[allow(dead_code)]` 以避免 WASM 构建中
+/// 因函数体被剥离而产生的未使用警告。
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[allow(dead_code)]
 pub struct CommentCountResponse {
@@ -59,6 +44,9 @@ pub struct CommentCountResponse {
 }
 
 /// 待审核评论列表响应。
+///
+/// 当前前端未直接调用 `get_pending_comments`，此类型仅在服务端函数体中构造；
+/// 保留 `#[allow(dead_code)]` 以避免 WASM 构建中因函数体被剥离而产生的未使用警告。
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[allow(dead_code)]
 pub struct PendingCommentsResponse {

src/api/error.rs

@@ -61,7 +61,7 @@ impl From<AppError> for ServerFnError {
     }
 }
 
-#[cfg(test)]
+#[cfg(all(test, feature = "server"))]
 mod tests {
     use super::*;
 

src/api/posts/types.rs

@@ -2,26 +2,6 @@
 
 use crate::models::post::{Post, PostStats, Tag};
 
-/// 创建/更新文章请求体（客户端使用）。
-#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
-#[allow(dead_code)]
-pub struct CreatePostRequest {
-    /// 文章标题。
-    pub title: String,
-    /// 自定义 slug，为空时由标题自动生成。
-    pub slug: Option<String>,
-    /// 文章摘要，为空时自动从正文提取。
-    pub summary: Option<String>,
-    /// Markdown 格式正文。
-    pub content_md: String,
-    /// 文章状态（如 draft / published）。
-    pub status: String,
-    /// 标签列表。
-    pub tags: Vec<String>,
-    /// 封面图 URL。
-    pub cover_image: Option<String>,
-}
-
 /// 创建/更新/删除文章的统一响应结构。
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct CreatePostResponse {

src/auth/password.rs

@@ -1,15 +1,17 @@
 //! 密码哈希与校验（Argon2）。
 //!
 //! 使用随机 salt 生成 PHC 字符串格式哈希，并通过 Argon2 验证。
-//! `#[allow(dead_code)]` 用于避免 WASM 构建中服务端函数体被剥离后的未使用警告。
+//! 仅在 `feature = "server"` 启用的服务端构建中使用。
 
+#[cfg(feature = "server")]
 use argon2::{
     password_hash::{PasswordHash, PasswordHasher, PasswordVerifier, SaltString},
     Argon2,
 };
+#[cfg(feature = "server")]
 use rand::rngs::OsRng;
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 /// 使用 Argon2 对明文密码进行哈希。
 pub fn hash_password(password: &str) -> Result<String, argon2::password_hash::Error> {
     let salt = SaltString::generate(&mut OsRng);
@@ -18,7 +20,7 @@ pub fn hash_password(password: &str) -> Result<String, argon2::password_hash::Er
     Ok(password_hash.to_string())
 }
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 /// 校验明文密码是否与已存储的哈希匹配。
 pub fn verify_password(password: &str, hash: &str) -> Result<bool, argon2::password_hash::Error> {
     let parsed_hash = PasswordHash::new(hash)?;
@@ -30,7 +32,7 @@ pub fn verify_password(password: &str, hash: &str) -> Result<bool, argon2::passw
     }
 }
 
-#[cfg(test)]
+#[cfg(all(test, feature = "server"))]
 mod tests {
     use super::*;
 

src/auth/session.rs

@@ -4,17 +4,20 @@
 //! Cookie 包含 HttpOnly、SameSite=Lax 与可选 Secure 标志。
 //! 服务端上下文解析函数仅在 `feature = "server"` 时可用。
 
+#[cfg(feature = "server")]
 use chrono::{DateTime, Duration, Utc};
+#[cfg(feature = "server")]
 use sha2::{Digest, Sha256};
+#[cfg(feature = "server")]
 use uuid::Uuid;
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 /// 生成新的随机会话 token（UUID 格式）。
 pub fn generate_token() -> String {
     Uuid::new_v4().to_string()
 }
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 /// 使用 SHA-256 对 token 进行哈希，用于数据库存储。
 pub fn hash_token(token: &str) -> String {
     let mut hasher = Sha256::new();
@@ -22,7 +25,7 @@ pub fn hash_token(token: &str) -> String {
     hex::encode(hasher.finalize())
 }
 
-#[allow(dead_code)]
+#[cfg(feature = "server")]
 /// 返回默认会话过期时间（当前时间 + 30 天）。
 pub fn default_expiry() -> DateTime<Utc> {
     Utc::now() + Duration::days(30)

src/models/comment.rs

@@ -33,7 +33,7 @@ impl CommentStatus {
     }
 
     /// 将 CommentStatus 序列化为小写字符串。
-    #[allow(dead_code)]
+    #[cfg(test)]
     pub fn as_str(&self) -> &'static str {
         match self {
             Self::Pending => "pending",
@@ -145,6 +145,7 @@ mod tests {
     use super::*;
 
     #[test]
+    #[cfg(feature = "server")]
     fn comment_status_from_str() {
         assert_eq!(CommentStatus::from_str("pending"), CommentStatus::Pending);
         assert_eq!(CommentStatus::from_str("approved"), CommentStatus::Approved);
@@ -153,6 +154,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "server")]
     fn comment_status_from_str_unknown_defaults_to_pending() {
         assert_eq!(CommentStatus::from_str("unknown"), CommentStatus::Pending);
         assert_eq!(CommentStatus::from_str(""), CommentStatus::Pending);

src/models/post.rs

@@ -17,7 +17,6 @@ pub enum PostStatus {
 
 impl PostStatus {
     /// 将状态序列化为数据库或 API 使用的小写字符串。
-    #[allow(dead_code)]
     pub fn as_str(&self) -> &'static str {
         match self {
             PostStatus::Draft => "draft",
@@ -26,7 +25,7 @@ impl PostStatus {
     }
 
     /// 将字符串解析为 PostStatus，无法识别时返回 None。
-    #[allow(dead_code)]
+    #[cfg(feature = "server")]
     pub fn from_str(s: &str) -> Option<Self> {
         match s {
             "draft" => Some(PostStatus::Draft),
@@ -175,6 +174,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "server")]
     fn post_status_from_str() {
         assert_eq!(PostStatus::from_str("draft"), Some(PostStatus::Draft));
         assert_eq!(
@@ -192,6 +192,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "server")]
     fn post_status_roundtrip() {
         for status in [PostStatus::Draft, PostStatus::Published] {
             assert_eq!(PostStatus::from_str(status.as_str()), Some(status.clone()));

src/models/user.rs

@@ -17,7 +17,7 @@ pub enum UserRole {
 
 impl UserRole {
     /// 将数据库中的角色字符串解析为 UserRole，无法识别时返回 None。
-    #[allow(dead_code)]
+    #[cfg(feature = "server")]
     pub fn from_str(s: &str) -> Option<Self> {
         match s {
             "admin" => Some(UserRole::Admin),
@@ -89,6 +89,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "server")]
     fn user_role_from_str() {
         assert_eq!(UserRole::from_str("admin"), Some(UserRole::Admin));
         assert_eq!(UserRole::from_str("blocked"), Some(UserRole::Blocked));

src/theme.rs

@@ -8,7 +8,7 @@
 use dioxus::prelude::*;
 
 /// localStorage 中存储主题值的键名。
-#[allow(dead_code)]
+#[cfg(any(target_arch = "wasm32", test))]
 const THEME_KEY: &str = "yggdrasil-theme";
 
 /// 应用主题枚举。

src/utils/text.rs

@@ -78,7 +78,7 @@ pub fn auto_summary(md: &str) -> String {
     plain.chars().take(200).collect()
 }
 
-#[cfg(test)]
+#[cfg(all(test, feature = "server"))]
 mod tests {
     use super::*;