feat: Add process package to monorepo

- Add `sal-process` package for cross-platform process management.
- Update workspace members in `Cargo.toml`.
- Mark process package as complete in MONOREPO_CONVERSION_PLAN.md
- Remove license information from `mycelium` and `os` READMEs.

process/tests/rhai_tests.rs

@@ -0,0 +1,321 @@
+use rhai::Engine;
+use sal_process::rhai::register_process_module;
+
+fn create_test_engine() -> Engine {
+    let mut engine = Engine::new();
+    register_process_module(&mut engine).unwrap();
+    engine
+}
+
+#[test]
+fn test_rhai_run_command() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run_command("echo hello");
+        result.success && result.stdout.contains("hello")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_run_silent() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run_silent("echo silent test");
+        result.success && result.stdout.contains("silent test")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_run_builder_pattern() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run("echo builder test").silent().execute();
+        result.success && result.stdout.contains("builder test")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_run_builder_ignore_error() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run("false").ignore_error().silent().execute();
+        !result.success
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_run_builder_with_log() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run("echo log test").log().silent().execute();
+        result.success && result.stdout.contains("log test")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_which_function() {
+    let engine = create_test_engine();
+
+    // Test with a command that should exist
+    #[cfg(target_os = "windows")]
+    let script = r#"
+        let path = which("cmd");
+        path != () && path.len() > 0
+    "#;
+
+    #[cfg(not(target_os = "windows"))]
+    let script = r#"
+        let path = which("sh");
+        path != () && path.len() > 0
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_which_nonexistent() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let path = which("nonexistent_command_12345");
+        path == ()
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_process_list() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let processes = process_list("");
+        processes.len() > 0
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_process_list_with_pattern() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let all_processes = process_list("");
+        if all_processes.len() > 0 {
+            let first_process = all_processes[0];
+            let filtered = process_list(first_process.name);
+            filtered.len() >= 1
+        } else {
+            false
+        }
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_process_info_properties() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let processes = process_list("");
+        if processes.len() > 0 {
+            let process = processes[0];
+            process.pid > 0 && process.name.len() > 0
+        } else {
+            false
+        }
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_command_result_properties() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run_command("echo test");
+        result.success && result.stdout.contains("test")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_kill_nonexistent() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = kill("nonexistent_process_12345");
+        result.contains("No matching processes") || result.contains("Successfully killed")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_run_with_options() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let options = #{
+            silent: true,
+            die: false,
+            log: false
+        };
+        let result = run("echo options test", options);
+        result.success && result.stdout.contains("options test")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_run_multiline_script() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let bash_script = `
+            echo "Line 1"
+            echo "Line 2"
+            echo "Line 3"
+        `;
+        let result = run_command(bash_script);
+        result.success && 
+        result.stdout.contains("Line 1") && 
+        result.stdout.contains("Line 2") && 
+        result.stdout.contains("Line 3")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_error_handling() {
+    let engine = create_test_engine();
+
+    // Test that errors are properly converted to Rhai errors
+    let script = r#"
+        let error_occurred = false;
+        try {
+            run_command("nonexistent_command_12345");
+        } catch(e) {
+            error_occurred = true;
+        }
+        error_occurred
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_process_get_error_handling() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let error_occurred = false;
+        try {
+            process_get("nonexistent_process_12345");
+        } catch(e) {
+            error_occurred = true;
+        }
+        error_occurred
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_builder_chaining() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        let result = run("echo chaining")
+            .silent()
+            .ignore_error()
+            .log()
+            .execute();
+        result.success && result.stdout.contains("chaining")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_cross_platform_commands() {
+    let engine = create_test_engine();
+
+    // Test platform-specific commands
+    #[cfg(target_os = "windows")]
+    let script = r#"
+        let result = run_command("echo Windows test");
+        result.success && result.stdout.contains("Windows test")
+    "#;
+
+    #[cfg(not(target_os = "windows"))]
+    let script = r#"
+        let result = run_command("echo Unix test");
+        result.success && result.stdout.contains("Unix test")
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}
+
+#[test]
+fn test_rhai_complex_workflow() {
+    let engine = create_test_engine();
+
+    let script = r#"
+        // Test a complex workflow combining multiple functions
+        let echo_path = which("echo");
+        if echo_path == () {
+            false
+        } else {
+            let result = run("echo workflow test").silent().execute();
+            if !result.success {
+                false
+            } else {
+                let processes = process_list("");
+                processes.len() > 0
+            }
+        }
+    "#;
+
+    let result: bool = engine.eval(script).unwrap();
+    assert!(result);
+}