feat: reorganize examples and add signature support to JobBuilder

- Reorganized examples into osiris/, sal/, and utils/ folders
- Moved hardcoded scripts to separate .rhai files
- Added signature() method to JobBuilder for job signing
- Updated OSIRIS context to use block_in_place instead of runtime
- Removed runtime field from OsirisContext
- Added typed save() methods for Note and Event objects
- Updated all examples to use new structure and APIs

examples/sal/scripts/zinit/zinit_basic.rhai

@@ -0,0 +1,78 @@
+// Basic example of using the Zinit client in Rhai
+
+// Socket path for Zinit
+let socket_path = "/tmp/zinit.sock";
+
+// List all services
+print("Listing all services:");
+let services = zinit_list(socket_path);
+
+if services.is_empty() {
+    print("No services found.");
+} else {
+    // Iterate over the keys of the map
+    for name in services.keys() {
+        let state = services[name];
+        print(`${name}: ${state}`);
+    }
+}
+
+// Get status of a specific service
+let service_name = "test";
+print(`Getting status for ${service_name}:`);
+
+try {
+    let status = zinit_status(socket_path, service_name);
+    print(`Service: ${status.name}`);
+    print(`PID: ${status.pid}`);
+    print(`State: ${status.state}`);
+    print(`Target: ${status.target}`);
+    print("Dependencies:");
+    
+    for (dep, state) in status.after.keys() {
+        print(`  ${dep}: ${state}`);
+    }
+} catch(err) {
+    print(`Error getting status: ${err}`);
+}
+
+// Create a new service
+print("\nCreating a new service:");
+let new_service = "rhai-test-service";
+let exec_command = "echo 'Hello from Rhai'";
+let oneshot = true;
+
+try {
+    let result = zinit_create_service(socket_path, new_service, exec_command, oneshot);
+    print(`Service created: ${result}`);
+    
+    // Monitor the service
+    print("\nMonitoring the service:");
+    let monitor_result = zinit_monitor(socket_path, new_service);
+    print(`Service monitored: ${monitor_result}`);
+    
+    // Start the service
+    print("\nStarting the service:");
+    let start_result = zinit_start(socket_path, new_service);
+    print(`Service started: ${start_result}`);
+    
+    // Get logs for a specific service
+    print("\nGetting logs:");
+    let logs = zinit_logs(socket_path, new_service);
+    
+    for log in logs {
+        print(log);
+    }
+    // Clean up
+    print("\nCleaning up:");
+    let stop_result = zinit_stop(socket_path, new_service);
+    print(`Service stopped: ${stop_result}`);
+    
+    let forget_result = zinit_forget(socket_path, new_service);
+    print(`Service forgotten: ${forget_result}`);
+    
+    let delete_result = zinit_delete_service(socket_path, new_service);
+    print(`Service deleted: ${delete_result}`);
+} catch(err) {
+    print(`Error: ${err}`);
+}