Your dream contains several intriguing elements that reflect your current thoughts, feelings, and experiences. Let's break it down.

1. Fixed Asset System and Isolation: The first part of your dream about working on a fixed asset system alone could indicate feelings of isolation or overwhelm in your waking life, particularly regarding work-related projects. Your relief when your boss suggests starting from scratch may symbolize a desire for a fresh start or a recognition that the current path may not be working. It could also suggest a deep-seated need for collaboration and support from your colleagues that you feel is currently missing.
2. Cat at the Vet: The cat in your dream may represent aspects of yourself or your life that require care and attention, particularly since you were preparing it for a vet visit. The cat's escape might symbolize a sense of losing control or feeling overwhelmed by responsibilities. Your interaction with the attractive young man reflects a complex dynamic between appreciating beauty and maintaining boundaries. This suggests that you are comfortable in recognizing and expressing admiration without feeling the need to pursue deeper connections.
3. Setting and Imagery: The detailed setting—a shake shingle house with an unpainted wooden porch and barren hills—might symbolize your current state of mind or environment. The unpainted wood could signify something unfinished or raw in your life, while the rolling hills may represent potential or a journey ahead. The young man's actions may indicate that you are observing or contemplating someone else's efforts while reflecting on your own.

Overall, your dream seems to highlight themes of isolation versus collaboration, the need for self-care, and the complexity of relationships. It may be beneficial to reflect on areas in your life where you feel overwhelmed or unsupported and consider reaching out for help. Additionally, acknowledging your feelings of attraction without the need for deeper involvement shows emotional maturity and self-awareness.