elevate: only pass env diff to keep notifications readable

scripts/x/elevate-adapter-superpowerd

@@ -346,14 +346,22 @@ def handle(conn):
 
 
 def _wrap_with_env(cmd, env):
-    """Wrap a command with explicit env setup.
+    """Wrap a command with env vars that differ from the adapter's own env.
 
-    Produces: env -i K1=V1 K2=V2 ... bash -c 'original command'
-    This ensures the command runs with exactly the caller's environment.
+    Only exports the delta so the command string stays readable in
+    superpowerd notifications. Vars that match the session env are
+    already inherited.
     """
     import shlex
-    parts = ["env", "-i"]
-    for k, v in sorted(env.items()):
+    adapter_env = os.environ
+    diff = {}
+    for k, v in env.items():
+        if adapter_env.get(k) != v:
+            diff[k] = v
+    if not diff:
+        return cmd
+    parts = ["env"]
+    for k, v in sorted(diff.items()):
         parts.append(f"{k}={v}")
     parts.extend(["bash", "-c", cmd])
     return " ".join(shlex.quote(p) for p in parts)