scaffold: Backend API routes, DB queries, and middleware stubs

88 handler stubs across 13 route files, 66 DB query stubs across
11 modules, auth/license extractors, and rate limit middleware.
All bodies are todo!() — ready for Phase 1b implementation.

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

backend/src/api/wipes.rs

@@ -0,0 +1,43 @@
+use std::sync::Arc;
+
+use axum::{
+    routing::{get, post},
+    Router,
+};
+
+use crate::models::error::ApiResult;
+use crate::AppState;
+
+pub fn router() -> Router<Arc<AppState>> {
+    Router::new()
+        .route("/{server_id}/trigger", post(trigger_wipe))
+        .route("/{server_id}/dry-run", post(dry_run_wipe))
+        .route("/{wipe_id}/rollback", post(rollback_wipe))
+        .route("/{wipe_id}/status", get(get_wipe_status))
+        .route("/history", get(get_wipe_history))
+        .route("/history/{id}", get(get_wipe_history_detail))
+}
+
+async fn trigger_wipe() -> ApiResult<impl axum::response::IntoResponse> {
+    todo!()
+}
+
+async fn dry_run_wipe() -> ApiResult<impl axum::response::IntoResponse> {
+    todo!()
+}
+
+async fn rollback_wipe() -> ApiResult<impl axum::response::IntoResponse> {
+    todo!()
+}
+
+async fn get_wipe_status() -> ApiResult<impl axum::response::IntoResponse> {
+    todo!()
+}
+
+async fn get_wipe_history() -> ApiResult<impl axum::response::IntoResponse> {
+    todo!()
+}
+
+async fn get_wipe_history_detail() -> ApiResult<impl axum::response::IntoResponse> {
+    todo!()
+}