feat(auth,mp): 患者登录流程优化 — 智能合并 + 角色冻结 + 页面冻结

- 智能合并：微信注册时用手机号盲索引匹配已有患者档案，避免重复建
  档（AuthState 添加 PiiCrypto + ensure_patient_record 增加盲索引查询）
- 角色冻结：小程序仅允许患者角色登录，医护角色被拦截
  （auth_service.rs 添加反向拦截 + 登录页移除 credential login 表单）
- 页面冻结：10 个非核心页面替换为 FrozenPage 占位组件（用药/知情同意
  /透析/家属/诊断/事件），移除 profile 导航入口，移除医生端预加载
- 医生端代码保留，仅隐藏入口，后续可零成本恢复

讨论记录：docs/discussions/2026-05-23-account-registration-login-flow.md

crates/erp-auth/src/auth_state.rs

@@ -1,3 +1,4 @@
+use erp_core::crypto::PiiCrypto;
 use erp_core::events::EventBus;
 use sea_orm::DatabaseConnection;
 use uuid::Uuid;
@@ -25,6 +26,7 @@ pub struct AuthState {
     pub wechat_secret: String,
     pub wechat_dev_mode: bool,
     pub redis: Option<redis::Client>,
+    pub crypto: PiiCrypto,
 }
 
 /// Parse a human-readable TTL string (e.g. "15m", "7d", "1h", "900s") into seconds.

crates/erp-auth/src/service/auth_service.rs

@@ -127,6 +127,12 @@ impl AuthService {
             return Err(AuthError::Forbidden("患者账号请使用小程序登录".to_string()));
         }
 
+        // 小程序端仅允许患者角色登录，医护角色请使用管理端
+        let has_patient_role = roles.iter().any(|r| r == "patient");
+        if is_miniprogram && !has_patient_role {
+            return Err(AuthError::Forbidden("医护账号请使用管理端登录".to_string()));
+        }
+
         let permissions = TokenService::get_user_permissions(user_model.id, tenant_id, db).await?;
 
         // 6. Sign tokens

crates/erp-auth/src/service/wechat_service.rs

@@ -151,7 +151,8 @@ impl WechatService {
             return Err(AuthError::Validation("该微信已绑定账号".to_string()));
         }
 
-        let user_id = Self::find_or_create_user_by_phone(&state.db, tenant_id, &phone).await?;
+        let user_id =
+            Self::find_or_create_user_by_phone(&state.db, tenant_id, &phone, &state.crypto).await?;
 
         let now = Utc::now();
         let wu = wechat_user::ActiveModel {
@@ -189,6 +190,7 @@ impl WechatService {
         db: &sea_orm::DatabaseConnection,
         tenant_id: Uuid,
         phone: &str,
+        crypto: &erp_core::crypto::PiiCrypto,
     ) -> AuthResult<Uuid> {
         use crate::entity::user;
 
@@ -234,7 +236,7 @@ impl WechatService {
         Self::assign_patient_role(db, tenant_id, user_id).await?;
 
         // 自动创建或关联 patient 记录
-        Self::ensure_patient_record(db, tenant_id, user_id, phone).await?;
+        Self::ensure_patient_record(db, tenant_id, user_id, phone, crypto).await?;
 
         Ok(user_id)
     }
@@ -282,12 +284,14 @@ impl WechatService {
     /// 自动创建或关联 patient 记录。
     ///
     /// 1. 如果已有 user_id 关联的 patient → 跳过
-    /// 2. 否则 → 创建新的 patient 记录
+    /// 2. 如果手机号盲索引匹配到未绑定的已有患者 → 合并（关联 user_id）
+    /// 3. 否则 → 创建新的 patient 记录
     async fn ensure_patient_record(
         db: &sea_orm::DatabaseConnection,
         tenant_id: Uuid,
         user_id: Uuid,
         phone: &str,
+        crypto: &erp_core::crypto::PiiCrypto,
     ) -> AuthResult<()> {
         use sea_orm::{ConnectionTrait, Statement};
 
@@ -306,6 +310,40 @@ impl WechatService {
             return Ok(());
         }
 
+        // 智能合并：用手机号盲索引查找未绑定的已有患者（管理员/护士建档）
+        let phone_hash = erp_core::crypto::hmac_hash(crypto.hmac_key(), phone);
+        let blind_match: Option<sea_orm::QueryResult> = db
+            .query_one(Statement::from_sql_and_values(
+                sea_orm::DatabaseBackend::Postgres,
+                r#"SELECT bi.entity_id AS patient_id
+                   FROM blind_index bi
+                   JOIN patient p ON p.id = bi.entity_id AND p.tenant_id = $2 AND p.deleted_at IS NULL
+                   WHERE bi.entity_type = 'patient'
+                     AND bi.field_name = 'emergency_contact_phone'
+                     AND bi.blind_hash = $1
+                     AND bi.tenant_id = $2
+                     AND p.user_id IS NULL
+                   LIMIT 1"#,
+                [phone_hash.as_str().into(), tenant_id.into()],
+            ))
+            .await
+            .map_err(|e| AuthError::DbError(e.to_string()))?;
+
+        if let Some(row) = blind_match {
+            let patient_id: Uuid = row
+                .try_get("", "patient_id")
+                .map_err(|e| AuthError::DbError(format!("blind_index parse: {}", e)))?;
+            db.execute(Statement::from_sql_and_values(
+                sea_orm::DatabaseBackend::Postgres,
+                "UPDATE patient SET user_id = $1, updated_at = NOW(), updated_by = $1 WHERE id = $2 AND user_id IS NULL",
+                [user_id.into(), patient_id.into()],
+            ))
+            .await
+            .map_err(|e| AuthError::DbError(e.to_string()))?;
+            tracing::info!(%user_id, %patient_id, "手机号盲索引合并 patient");
+            return Ok(());
+        }
+
         let suffix = &phone[phone.len().saturating_sub(4)..];
         let patient_id = Uuid::now_v7();
         let now = Utc::now();