Clarify the venv scrub and format the list

The venv scrub covers every call, not just scan: vex also discovers
packages under --cwd. Reformat the two-entry PENDING_RAW_SPAWNS list
the way rustfmt wants it.

Assisted-by: Claude Code:claude-opus-5-5

Author: claude

crates/socket-patch-cli/tests/e2e_redirect_cargo_shapes.rs

@@ -137,9 +137,10 @@ fn run_socket(cwd: &Path, args: &[&str], cargo_home: &Path) -> (i32, String, Str
 /// [`run_socket`] with extra env applied after the scrub.
 ///
 /// The child gets the hermetic `SOCKET_*` environment
-/// (`hermetic::binary_command`), and an activated venv is scrubbed: the
-/// hosted scan is unscoped, so the developer's venv would add packages to
-/// it. `CARGO_HOME` is the leg's own, set after the scrubs.
+/// (`hermetic::binary_command`), and an activated venv is scrubbed on
+/// every call: `scan` and `vex` discover packages unscoped under `--cwd`,
+/// so the developer's venv would add packages to them. `CARGO_HOME` is the
+/// leg's own, set after the scrubs.
 fn run_socket_env(
     cwd: &Path,
     args: &[&str],

crates/socket-patch-cli/tests/spawn_env_hygiene.rs

@@ -28,10 +28,7 @@ use serial_test::serial;
 /// Files that still spawn the binary with a bare `Command::new`, so their
 /// children see whatever `SOCKET_*` the ambient shell exports unless the file
 /// scrubs by hand.
-const PENDING_RAW_SPAWNS: &[&str] = &[
-    "e2e_hosted_production.rs",
-    "e2e_vendored_production.rs",
-];
+const PENDING_RAW_SPAWNS: &[&str] = &["e2e_hosted_production.rs", "e2e_vendored_production.rs"];
 
 /// The environment `cmd`'s child would see: the parent environment with
 /// `cmd`'s explicit sets and removals applied.