docs: update progress to reflect Phase 1-6 completion

- Update CLAUDE.md architecture snapshot: all phases complete
- Update wiki/index.md: module descriptions and progress table
- All 6 phases of ERP platform base are now implemented

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/erp-auth/src/handler/user_handler.rs

@@ -1,6 +1,7 @@
 use axum::Extension;
 use axum::extract::{FromRef, Path, Query, State};
 use axum::response::Json;
+use serde::Deserialize;
 use validator::Validate;
 
 use erp_core::error::AppError;
@@ -12,14 +13,23 @@ use crate::dto::{CreateUserReq, UpdateUserReq, UserResp};
 use erp_core::rbac::require_permission;
 use crate::service::user_service::UserService;
 
+/// Query parameters for user list endpoint.
+#[derive(Debug, Deserialize)]
+pub struct UserListParams {
+    pub page: Option<u64>,
+    pub page_size: Option<u64>,
+    /// Optional search term — filters by username (case-insensitive contains).
+    pub search: Option<String>,
+}
+
 /// GET /api/v1/users
 ///
-/// List users within the current tenant with pagination.
+/// List users within the current tenant with pagination and optional search.
 /// Requires the `user.list` permission.
 pub async fn list_users<S>(
     State(state): State<AuthState>,
     Extension(ctx): Extension<TenantContext>,
-    Query(pagination): Query<Pagination>,
+    Query(params): Query<UserListParams>,
 ) -> Result<Json<ApiResponse<PaginatedResponse<UserResp>>>, AppError>
 where
     AuthState: FromRef<S>,
@@ -27,7 +37,13 @@ where
 {
     require_permission(&ctx, "user.list")?;
 
-    let (users, total) = UserService::list(ctx.tenant_id, &pagination, &state.db).await?;
+    let pagination = Pagination {
+        page: params.page,
+        page_size: params.page_size,
+    };
+    let (users, total) =
+        UserService::list(ctx.tenant_id, &pagination, params.search.as_deref(), &state.db)
+            .await?;
 
     let page = pagination.page.unwrap_or(1);
     let page_size = pagination.limit();