How to Extend the Fuzzer

To add more test coverage:

1. Add new generator functions in fuzzer.rs:

   pub fn generate_conflicting_proposal() -> Proposal {
       // Compose two mutually exclusive changes
   }

2. Add new fuzz test case:

   #[test]
   fn test_fuzz_conflict_detection() {
       let proposal = generate_conflicting_proposal();
       assert_err!(
           PropertyGovernance::submit_proposal(origin, proposal),
           Error::<Test>::ConflictingProposal
       );
   }

3. Automate with looped inputs:

   for _ in 0..100 {
       let proposal = generate_random_proposal();
       let _ = PropertyGovernance::submit_proposal(origin.clone(), proposal);
   }