refactor(dynamic): enhance Rust receiver construction with recursive dependency resolution, add Liquibase changelog context detection, and expand test coverage

tests/dynamic_fixtures/class_method/rust_recursive_deps/benign.rs

@@ -0,0 +1,23 @@
+// Benign control for recursive Rust class-method receiver construction.
+
+pub struct CommandRunner;
+
+impl CommandRunner {
+    pub fn run(&self, input: &str) -> String {
+        let out = std::process::Command::new("true")
+            .arg(input)
+            .output()
+            .expect("exec");
+        String::from_utf8_lossy(&out.stdout).into_owned()
+    }
+}
+
+pub struct UserService {
+    pub runner: CommandRunner,
+}
+
+impl UserService {
+    pub fn run(&self, input: &str) -> String {
+        self.runner.run(input)
+    }
+}

tests/dynamic_fixtures/class_method/rust_recursive_deps/vuln.rs

@@ -0,0 +1,26 @@
+// Rust class-method fixture whose receiver has same-file dependencies
+// but no Default or new() constructor.
+
+pub struct CommandRunner;
+
+impl CommandRunner {
+    pub fn run(&self, input: &str) -> String {
+        let cmd = format!("true {}", input);
+        let out = std::process::Command::new("sh")
+            .arg("-c")
+            .arg(&cmd)
+            .output()
+            .expect("exec");
+        String::from_utf8_lossy(&out.stdout).into_owned()
+    }
+}
+
+pub struct UserService {
+    pub runner: CommandRunner,
+}
+
+impl UserService {
+    pub fn run(&self, input: &str) -> String {
+        self.runner.run(input)
+    }
+}