apashutayid – “Is it permitted to lie so that you can get a good shidduch (if the shver is rich, does the parnassah heter apply)?”
I’m not a Poisek to judge up every case, but I can tell you that people lie in the above case all the time.
“If I damage your property and I don’t have the funds to pay you back, can I lie to you and deny it under the parnassah heter?”
You’re lying to prevent you from paying the guy what you owe him anyway.
“If my wife wants be at home, but I want to hang out and eat chulent and sushi with the chevra, can I lie to her and tell her the car broke down to maintain shalom?”
Again, people do this all the time.
I’m not here to give people Heterim for every case you can think of, I was talking in a specific case. Ask your Rabbi all your Shailas that you posted above. I’m not the CR’s Poisek. Comprende?