diff --git a/bin/rclaude b/bin/rclaude
index f4e22cc..9ebeeab 100755
--- a/bin/rclaude
+++ b/bin/rclaude
@@ -20,10 +20,15 @@
 # Usage:
 #   rclaude                                  # local, $PWD
 #   rclaude .                                # local, $PWD
-#   rclaude <host>                           # remote $HOME on <host>
+#   rclaude <host>                           # remote: $PWD mirrored under remote $HOME
+#   rclaude <host> .                         # same as above (explicit form)
 #   rclaude <host> <dir>                     # remote (or local) at <dir>
 #   rclaude list                             # show active sessions across hosts
 #   rclaude resume [pattern]                 # reattach (interactive if pattern matches >1)
+#
+# Mirror semantics: if local $PWD is $HOME/X/Y, the remote dir defaults to
+# ~/X/Y on the remote (the remote's $HOME, not $HOME from this machine).
+# If $PWD is outside $HOME, falls back to the remote's $HOME.
 
 set -eu
 
@@ -221,11 +226,16 @@ if is_local "$host"; then
         .|"") dir=$PWD ;;
     esac
 else
-    if [ "$dir" = "." ]; then
-        echo "error: '.' as dir requires a local target; pass an explicit remote path" >&2
-        exit 2
+    # Remote default: mirror local $PWD relative to $HOME onto the remote's
+    # $HOME. Same behavior for omitted dir or explicit `.`. Falls back to
+    # remote $HOME if local $PWD isn't under $HOME.
+    if [ "$dir" = "." ] || [ -z "$dir" ]; then
+        case $PWD in
+            "$HOME")     dir=\~ ;;
+            "$HOME"/*)   _rel=${PWD#"$HOME"/}; dir="~/$_rel" ;;
+            *)           dir=\~ ;;
+        esac
     fi
-    [ -z "$dir" ] && dir=\~
 fi
 
 slug=$(printf %s "$dir" | sed -e 's|^[~/]*||' -e 's|[^A-Za-z0-9]|-|g')