feat: publish Dever core with project scaffolding and versioned AI skills

test/dever-tests/tests/support/temp.rs

@@ -0,0 +1,44 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+use std::sync::atomic::{AtomicU64, Ordering};
+
+pub struct TemporaryDirectory(PathBuf);
+
+impl TemporaryDirectory {
+    pub fn new() -> Self {
+        Self::new_in(&std::env::temp_dir())
+    }
+
+    pub fn new_in(parent: &Path) -> Self {
+        static NEXT: AtomicU64 = AtomicU64::new(0);
+        loop {
+            let path = parent.join(format!(
+                "dever-core-test-{}-{}",
+                std::process::id(),
+                NEXT.fetch_add(1, Ordering::Relaxed)
+            ));
+            let mut builder = fs::DirBuilder::new();
+            #[cfg(unix)]
+            {
+                use std::os::unix::fs::DirBuilderExt;
+                builder.mode(0o700);
+            }
+            match builder.create(&path) {
+                Ok(()) => return Self(path),
+                Err(error) if error.kind() == std::io::ErrorKind::AlreadyExists => continue,
+                Err(error) => panic!("cannot create test directory: {error}"),
+            }
+        }
+    }
+
+    pub fn path(&self) -> &Path {
+        &self.0
+    }
+}
+
+impl Drop for TemporaryDirectory {
+    fn drop(&mut self) {
+        // This object owns only the directory it exclusively created above.
+        let _ = fs::remove_dir_all(&self.0);
+    }
+}