
Wow, you really put in a lot more effort into your maintenance than I do! Everyday! I could not keep up with that schedule.
We all have certain challenges for where we live. I don't know about your endless rains, but I can tell you what I do and what works for me.
After my chickens ate all the grass in the chicken run down to bare dirt, I was challenged to find some way to keep everything from turning into a smelly, muddy mess. I got a load of free wood chips from our local county landfill and laid down about 2-3 inches of wood chips on the ground. That pretty much took care of any potential problems and I could have stopped there, maybe adding fresh wood chips from time to time.
However, I decided to convert my chicken run into a chicken run composting system. I started dumping all my grass clippings, leaves, weeds from the garden, and just about anything else organic into the chicken run litter. It never smells. In fact, after a heavy rain, it smells rather pleasant like a fresh forest floor.
I don't have endless rains, so the top layers of my chicken run litter have a chance to dry out in a day or two. The lower layers of the litter will retain water, much in a wrung-out sponge state, and will compost in place. The moisture in those layers is also great for worms and bugs to thrive. My chickens love to scratch and peck, digging for good things to eat in the composting litter.
My chicken run litter is about 12 inches deep, normally, and in the fall after I dump all my leaves into the run, the litter is about 18 inches deep. At any rate, I think the thick layers of the composting litter contain any smell that might be going on near the ground level.
I harvest my chicken run compost about twice a year. But I have so much compost in the chicken run, that I only clean out a small section at a time. Even so, when I get down to the bare dirt, my chicken run litter still smells like fresh compost with no offensive odor. If you have a good mix of material in your litter, it should not smell.
I agree with others that suggested you might want to add more organic material to your run to stop the smell. I suspect that your daily raking out of material is working against you. My suggestion is to let your litter build up and see if the smell goes away.
Again, I don't have endless rains, and that might make your course of action different than what works for me. But I would suggest trying to give yourself a break, let that litter build up, and see if it works for you, or not. Good luck.