Nice summary. No book needed.
My situation is on smaller scale in my front/backyard.. believe like 350ft2. Doing permaculture style. Thing is with all the mulching the snails/slugs have a beautiful place to live and they eat away almost anything I plant or sow. They eat the flowers from the zucchini, baby beans, etc, except my oregano 😃 
Tried years fighting them  with beer/koffie/eggshells/garlic/coins/catchingthem/killingthem:(. Even ate some snails(pretty good). Now just buying organic veg and letting be, have a plum tree and some herbs.  This year thinking about nematodes after they ate all the flowers of some new plants just planted for the spring, but not sure how good this is for other insects, worms. and if i F things up in a other way..
Any ideas? 

 I don't know much about sails and slugs nor nematodes. However, if you think the mulching is what creates the habitat for them to thrive, you could use different mulch that they don't like to live in or use some sort of ground cover instead like strawberry or clover. Another thought that comes to mind, assuming you can't have or don't want chickens or ducks, is to create habitat for snakes. If you created the habitat for the slugs, can you create habitat for the predators of the slugs? Another thing you can do is find more plants, like oregano, that the slugs don't like and grow those instead. More perennials, I am always planting more perennials.  

 Thank you. 
I might have a hedgehog and toads living here, at least they pass through. No snakes, need to go to nature reserve for that and even there they're rare. I think they'll get run over with to much traffic here if ever they want to roam or relax on the warm road.
I'm happy for your thoughts on the matter and actually just enjoy seeing a different topic pass this nostr, so I had to post a question and see if you might have the eureka answer on the slimy plague however cute they might look😄 
 I feel my little garden is more for some herbs, berries and fruits, maybe a hazelnut. 

Good luck with the food forest and that it may give you plenty.
🙏