[ISL]

Academic references are probably of greatest import in an academic setting. Industrial hires generally care about what you can do for them, not what you've done in the past.

In addition to HN as an advice/support group, consider looking around within your department and peer group. Chatting with other professors may yield useful insights (and provide a back-channel communique to your advisor). It's fine to continue working (and doing good work) for your advisor while you aggressively network for other options.

As I tell every student I work with in Physics; do it for love. If you don't love it, other things are probably more worth your time.