Attribute world commits to conversations and restore temporary directories

host/src/process/mod.rs

@@ -349,6 +349,15 @@ impl Runtime {
                 .env
                 .push(("PATH".into(), "/usr/local/bin:/bin".into()));
         }
+        // Keep process attribution aligned with the nearest conversation, including children.
+        if let Some(conversation) = conversations.first() {
+            request
+                .env
+                .retain(|(name, _)| name != "SAUSAGE_CONVERSATION");
+            request
+                .env
+                .push(("SAUSAGE_CONVERSATION".into(), conversation.clone()));
+        }
         request.cwd = sausage_vfs::resolve("/", &request.cwd);
         request.env.retain(|(name, _)| name != "PWD");
         request.env.push(("PWD".into(), request.cwd.clone()));

host/src/world.rs

@@ -42,6 +42,7 @@ impl World {
     }
 
     /// Copy an optional bundle into a new world. Existing worlds retain their programs.
+    /// Ensure `/tmp`, `/run`, and `/var/tmp` exist on every startup.
     /// Each `.wasm` tool keeps its independent file and gains a relative `/bin/<name>` symlink.
     /// `/dev` exposes generated null, zero, and random byte devices in every world.
     /// Missing `/etc/gitconfig` defaults to Sausage <sausage@localhost>. Local repository config overrides it.
@@ -50,6 +51,9 @@ impl World {
         let host_dir = dir.join("host");
         let fresh = !root_dir.exists();
         std::fs::create_dir_all(root_dir.join("usr/local/bin"))?;
+        for path in ["tmp", "run", "var/tmp"] {
+            std::fs::create_dir_all(root_dir.join(path))?;
+        }
         if fresh && let Some(bundle) = userland {
             for folder in ["bin", "src"] {
                 copy_tree(&bundle.join(folder), &root_dir.join(folder))?;