scaffold: Backend core — Cargo.toml, main.rs, config, models, panel adapter

Axum server entry point, AppConfig, AppState, ApiError, all model
structs (auth, license, server, wipe), and the PanelAdapter trait
that abstracts AMP/Pterodactyl/companion connections.

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

backend/src/services/mod.rs

@@ -0,0 +1,16 @@
+pub mod panel_adapter;
+pub mod amp_adapter;
+pub mod pterodactyl_adapter;
+pub mod companion_adapter;
+pub mod wipe_engine;
+pub mod scheduler;
+pub mod steam_watcher;
+pub mod map_manager;
+pub mod backup_manager;
+pub mod health_checker;
+pub mod discord;
+pub mod pushbullet;
+pub mod nats_bridge;
+pub mod license;
+pub mod cloudflare;
+pub mod encryption;

backend/src/services/panel_adapter.rs

@@ -0,0 +1,78 @@
+use anyhow::Result;
+use async_trait::async_trait;
+use serde::{Deserialize, Serialize};
+
+/// Discovered server from a panel's auto-discovery
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DiscoveredServer {
+    pub panel_server_id: String,
+    pub name: String,
+    pub ip: Option<String>,
+    pub port: Option<i32>,
+    pub game_port: Option<i32>,
+    pub status: String,
+}
+
+/// Server status from panel query
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ServerStatus {
+    pub is_running: bool,
+    pub cpu_usage: Option<f64>,
+    pub memory_usage_mb: Option<i64>,
+    pub uptime_seconds: Option<i64>,
+}
+
+/// File entry from directory listing
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FileEntry {
+    pub name: String,
+    pub path: String,
+    pub is_directory: bool,
+    pub size_bytes: Option<i64>,
+    pub modified_at: Option<String>,
+}
+
+/// The core abstraction for server hosting panels.
+///
+/// Each panel type (AMP, Pterodactyl, Companion Agent) implements this trait.
+/// The wipe engine, scheduler, and all server management operations call
+/// through this interface — they never know or care which panel is backing
+/// the server.
+#[async_trait]
+pub trait PanelAdapter: Send + Sync {
+    /// Test that the panel connection is working
+    async fn test_connection(&self) -> Result<bool>;
+
+    /// Discover all game servers managed by this panel
+    async fn discover_servers(&self) -> Result<Vec<DiscoveredServer>>;
+
+    /// Get the current status of a server
+    async fn get_server_status(&self, server_id: &str) -> Result<ServerStatus>;
+
+    /// Start a stopped server
+    async fn start_server(&self, server_id: &str) -> Result<()>;
+
+    /// Stop a running server
+    async fn stop_server(&self, server_id: &str) -> Result<()>;
+
+    /// Restart a server (stop + start)
+    async fn restart_server(&self, server_id: &str) -> Result<()>;
+
+    /// Send a console command to the server
+    async fn send_command(&self, server_id: &str, command: &str) -> Result<String>;
+
+    /// Read a file from the server filesystem
+    async fn get_file(&self, server_id: &str, path: &str) -> Result<Vec<u8>>;
+
+    /// Write a file to the server filesystem
+    async fn put_file(&self, server_id: &str, path: &str, data: &[u8]) -> Result<()>;
+
+    /// Delete a file from the server filesystem
+    async fn delete_file(&self, server_id: &str, path: &str) -> Result<()>;
+
+    /// List files in a directory on the server
+    async fn list_files(&self, server_id: &str, path: &str) -> Result<Vec<FileEntry>>;
+
+    /// Trigger a SteamCMD update on the server
+    async fn trigger_steam_update(&self, server_id: &str) -> Result<()>;
+}