feat: add bread-sync module for snapshot and restore functionality

- Introduced `bread-sync` module with core functionalities for syncing system state via Git.
- Implemented `MachineProfile` struct for managing machine profiles, including methods for reading and writing profiles.
- Added package management support with snapshot capabilities for `pacman`, `pip`, `npm`, and `cargo`.
- Created comprehensive tests for sync operations, package parsing, and machine profile management.
- Enhanced `udev` adapter to include vendor and product IDs for scanned devices.
- Updated state engine to handle module clearing commands.
- Introduced Lua integration for accessing machine information and file system operations.
- Improved packaging documentation for Arch Linux and systemd service setup.

breadd/src/core/state_engine.rs

@@ -36,6 +36,7 @@ pub enum StateCommand {
         id: SubscriptionId,
     },
     ClearSubscriptions,
+    ClearModules,
     SetModuleStatus {
         name: String,
         status: ModuleLoadState,
@@ -112,6 +113,10 @@ impl StateHandle {
         let _ = self.command_tx.send(StateCommand::ClearSubscriptions);
     }
 
+    pub fn clear_modules(&self) {
+        let _ = self.command_tx.send(StateCommand::ClearModules);
+    }
+
     pub fn set_module_status(
         &self,
         name: String,
@@ -236,6 +241,9 @@ async fn handle_command(
             watches.clear();
             subscription_count.store(0, Ordering::Relaxed);
         }
+        StateCommand::ClearModules => {
+            state.write().await.modules.clear();
+        }
         StateCommand::SetModuleStatus {
             name,
             status,
@@ -421,6 +429,14 @@ fn apply_device_change(state: &mut RuntimeState, data: &Value, connected: bool)
                 .and_then(Value::as_str)
                 .unwrap_or("unknown")
                 .to_string(),
+            vendor_id: data
+                .get("vendor_id")
+                .and_then(Value::as_str)
+                .map(ToString::to_string),
+            product_id: data
+                .get("product_id")
+                .and_then(Value::as_str)
+                .map(ToString::to_string),
         });
     } else {
         state.devices.connected.retain(|d| d.id != id);

breadd/src/core/types.rs

@@ -57,6 +57,10 @@ pub struct Device {
     pub name: String,
     pub class: DeviceClass,
     pub subsystem: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub vendor_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub product_id: Option<String>,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq)]