fix(kugetsu): wrap cmd_continue in subshell with cd for correct worktree dir

The --dir flag only sets directory for the subprocess, not the session's
stored directory in opencode's SQLite DB. This was already fixed for
cmd_start in v0.1.10, but cmd_continue still had the bug.

Fixes #127

skills/kugetsu/scripts/kugetsu

@@ -1439,12 +1439,13 @@ cmd_continue() {
 
     echo "Continuing session for '$session_name'..."
     # Note: --continue always allowed (existing sessions don't count toward limit)
+    # Wrap in subshell with cd to ensure worktree directory is set correctly in session DB
     if [ -n "$worktree_path" ] && [ -d "$worktree_path" ]; then
         echo "Using worktree: $worktree_path"
         if [ "$DEBUG_MODE" = true ]; then
-            opencode run "$message" --continue --session "$opencode_session_id" --dir "$worktree_path" 2>&1 | tee "$session_path.debug.log" &
+            (cd "$worktree_path" && opencode run "$message" --continue --session "$opencode_session_id" --dir "$worktree_path" 2>&1) | tee "$session_path.debug.log" &
         else
-            opencode run "$message" --continue --session "$opencode_session_id" --dir "$worktree_path" 2>&1 &
+            (cd "$worktree_path" && opencode run "$message" --continue --session "$opencode_session_id" --dir "$worktree_path" 2>&1) &
         fi
     else
         if [ "$DEBUG_MODE" = true ]; then