style: Migrate to stable-only rustfmt configuration

- Remove nightly-only features from .rustfmt.toml and vendor/ss58-registry/rustfmt.toml
- Removed features: imports_granularity, wrap_comments, comment_width,
  reorder_impl_items, spaces_around_ranges, binop_separator,
  match_arm_blocks, trailing_semicolon, trailing_comma
- Format all 898 affected files with stable rustfmt
- Ensures long-term reliability without nightly toolchain dependency

pezkuwi/node/malus/src/variants/common.rs

@@ -67,8 +67,9 @@ impl FakeCandidateValidation {
 		use FakeCandidateValidation::*;
 
 		match *self {
-			BackingInvalid | BackingAndApprovalInvalid | BackingValid | BackingAndApprovalValid =>
-				true,
+			BackingInvalid | BackingAndApprovalInvalid | BackingValid | BackingAndApprovalValid => {
+				true
+			},
 			_ => false,
 		}
 	}
@@ -77,10 +78,10 @@ impl FakeCandidateValidation {
 		use FakeCandidateValidation::*;
 
 		match *self {
-			ApprovalInvalid |
-			BackingAndApprovalInvalid |
-			ApprovalValid |
-			BackingAndApprovalValid => true,
+			ApprovalInvalid
+			| BackingAndApprovalInvalid
+			| ApprovalValid
+			| BackingAndApprovalValid => true,
 			_ => false,
 		}
 	}
@@ -126,20 +127,23 @@ pub enum FakeCandidateValidationError {
 impl Into<InvalidCandidate> for FakeCandidateValidationError {
 	fn into(self) -> InvalidCandidate {
 		match self {
-			FakeCandidateValidationError::ExecutionError =>
-				InvalidCandidate::ExecutionError("Malus".into()),
+			FakeCandidateValidationError::ExecutionError => {
+				InvalidCandidate::ExecutionError("Malus".into())
+			},
 			FakeCandidateValidationError::InvalidOutputs => InvalidCandidate::InvalidOutputs,
 			FakeCandidateValidationError::Timeout => InvalidCandidate::Timeout,
 			FakeCandidateValidationError::ParamsTooLarge => InvalidCandidate::ParamsTooLarge(666),
 			FakeCandidateValidationError::CodeTooLarge => InvalidCandidate::CodeTooLarge(666),
-			FakeCandidateValidationError::POVDecompressionFailure =>
-				InvalidCandidate::PoVDecompressionFailure,
+			FakeCandidateValidationError::POVDecompressionFailure => {
+				InvalidCandidate::PoVDecompressionFailure
+			},
 			FakeCandidateValidationError::BadReturn => InvalidCandidate::BadReturn,
 			FakeCandidateValidationError::BadParent => InvalidCandidate::BadParent,
 			FakeCandidateValidationError::POVHashMismatch => InvalidCandidate::PoVHashMismatch,
 			FakeCandidateValidationError::BadSignature => InvalidCandidate::BadSignature,
-			FakeCandidateValidationError::ParaHeadHashMismatch =>
-				InvalidCandidate::ParaHeadHashMismatch,
+			FakeCandidateValidationError::ParaHeadHashMismatch => {
+				InvalidCandidate::ParaHeadHashMismatch
+			},
 			FakeCandidateValidationError::CodeHashMismatch => InvalidCandidate::CodeHashMismatch,
 		}
 	}

pezkuwi/node/malus/src/variants/dispute_finalized_candidates.rs

@@ -148,8 +148,9 @@ where
 							matches!(event, CandidateEvent::CandidateIncluded(_, _, _, _))
 						});
 						let candidate = match event {
-							Some(CandidateEvent::CandidateIncluded(candidate, _, _, _)) =>
-								candidate,
+							Some(CandidateEvent::CandidateIncluded(candidate, _, _, _)) => {
+								candidate
+							},
 							_ => {
 								gum::error!(
 									target: MALUS,