* fix: copy images to agent_working_dir when set When agent_working_dir is configured, copy images to <workspace>/<agent_working_dir>/.vibe-images/ instead of <workspace>/.vibe-images/ so that relative paths work correctly for the AI agent. Closes #1727 Signed-off-by: majiayu000 <1835304752@qq.com> * optionally append agent working directory in other image routes --------- Signed-off-by: majiayu000 <1835304752@qq.com> Co-authored-by: Gabriel Gordon-Hall <ggordonhall@gmail.com>