Be more specific with clippy's exhaustive_enums lint exceptions

src/database/mod.rs

@@ -22,6 +22,7 @@ pub use error::{ConditionEvaluationError, MetadataRetrievalError};
 
 /// Control behaviour when writing to files.
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[non_exhaustive]
 pub enum WriteMode {
     /// Create the file if it does not exist, otherwise error.
     Create,

src/lib.rs

@@ -1,7 +1,6 @@
 // Allow some lints that are denied at the workspace level.
 #![allow(
     clippy::doc_markdown,
-    clippy::exhaustive_enums,
     clippy::filetype_is_file,
     clippy::must_use_candidate,
     clippy::missing_errors_doc,

src/logging.rs

@@ -39,6 +39,10 @@ pub fn set_log_level(level: LogLevel) {
 
 /// Codes used to specify different levels of API logging.
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[expect(
+    clippy::exhaustive_enums,
+    reason = "Adding a new log level should be a breaking change."
+)]
 pub enum LogLevel {
     Trace,
     Debug,

src/metadata/message.rs

@@ -15,6 +15,10 @@ use super::{
 
 /// Codes used to indicate the type of a message.
 #[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[expect(
+    clippy::exhaustive_enums,
+    reason = "Adding a new message is a breaking change."
+)]
 pub enum MessageType {
     /// A notification message that is of no significant severity.
     #[default]

src/metadata/tag.rs

@@ -10,6 +10,7 @@ use super::{
 
 /// Represents whether a Bash Tag suggestion is for addition or removal.
 #[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[expect(clippy::exhaustive_enums, reason = "It's effectively a boolean")]
 pub enum TagSuggestion {
     #[default]
     Addition,