If you can perform your job's essential functions with the boot on, there's no reason you can't return to work with a reasonable accommodation.

Can I dispute a settlement and file a civil lawsuit

It may be a breach of contract suit if settlement not satisfied, but public policy favors settlements and you may have waived your right to a trial...

Maybe. Did you complain about harassment, and what type of harassment is it?

What rights do I have to my own photography under an employer without a work for hire agreement?

Those pics may be owned by former employer because they were taken during and as part of that employment, regardless of a written work made for...

Fired for Harrassment

Were you accused of harassment by anyone, or was the termination based on the picture only? If no complaint was made against you, then it seems...

Can I sue for wrongful dismissal, discrimination and harassment ?

It is not clear from this question if any illegal conduct was involved in your dismissal. More detail may help answering.

There is no requirement for either of these to occur.

Boss asking other employees about what time i clocked in?

One issue that jumps out to me is what caused the worsened treatment? Did you complain about or refuse to do something you disagreed with? Sounds...

If what you're being told to do is truly false, you can refuse to lie. But it's unclear if that refusal to lie is protected by the law, such as for...

Do I have the right to see the investigative report from my employer?

Great question. You should be able to see it if you sued. A little harder to get the report outside of litigation and the rules of discovery,...