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/_archive/run_test.rhai

@@ -0,0 +1,72 @@
+// Test script for the run command functionality
+
+print("===== Run Command Test =====");
+
+// Test single command
+print("\n=== Single Command Execution ===");
+let result = run("echo Hello, World!");
+print(`Command stdout: ${result.stdout}`);
+print(`Command stderr: ${result.stderr}`);
+print(`Command success: ${result.success}`);
+print(`Command exit code: ${result.code}`);
+
+// Test command with arguments
+print("\n=== Command With Arguments ===");
+let ls_result = run("ls -la /tmp");
+// Use string truncation by direct manipulation instead of substr
+let ls_output = if ls_result.stdout.len() > 100 {
+    ls_result.stdout[0..100] + "..."
+} else {
+    ls_result.stdout
+};
+print(`ls -la /tmp stdout: ${ls_output}`);
+print(`ls success: ${ls_result.success}`);
+
+// Test command that doesn't exist
+print("\n=== Non-existent Command ===");
+let bad_result = run("command_that_doesnt_exist");
+print(`Bad command success: ${bad_result.success}`);
+print(`Bad command error: ${bad_result.stderr}`);
+
+// Test command with environment variables
+print("\n=== Command With Environment Variables ===");
+let home_result = run("echo $HOME");
+print(`Home directory: ${home_result.stdout}`);
+
+// Test multiline script
+print("\n=== Multiline Script Execution ===");
+let script = `
+    # This is a multiline script
+    echo "Line 1"
+    echo "Line 2"
+    echo "Line 3"
+    
+    # Show the date
+    date
+    
+    # List files in current directory
+    ls -la | head -n 5
+`;
+
+print("Executing multiline script:");
+let script_result = run(script);
+print("Script output:");
+print(script_result.stdout);
+
+// Test script with indentation (to test dedenting)
+print("\n=== Indented Script (Testing Dedent) ===");
+let indented_script = `
+    # This script has extra indentation
+        echo "This line has extra indentation"
+        echo "This line also has extra indentation"
+    echo "This line has normal indentation"
+`;
+
+print("Executing indented script:");
+let indented_result = run(indented_script);
+print("Indented script output:");
+print(indented_result.stdout);
+
+print("\n===== Run Command Test Completed =====");
+
+"Success"