xhan,
Well, I'm not a doctor and so my views are experiences and opinions of a layman who just happened to learn a lot from his experience as a TB survivor.
So, if you're fine with that, here goes:
1. "Fibrosis" is a thickening of tissue that has repaired or is in the process of repairing itself. That said, you shouldn't have this if you're completely clear. Is it a sign of TB-damaged tissue? Possibly.
2. If the fibrosis is TB-related, you can definitely be cured!
3. Migrating to another country, as you know, requires clear x-rays, or a doctor's statement that you're cured of any abnormality found on the x-ray. Colder climate has little or no bearing to your past or present condition.
On the pleurodiaphragmatic adhesion, apparently this may be "scar tissue."
I think you're already seeing a doctor, so that's good. On your concern about working abroad, what's key is getting your doctor to certify/state that your condition is clear. If not, then take the treatment until cured.
Good luck.