refactor(core): improve code style and public API clarity

Replace bool-based settings with enums, refine visibility and
signatures, and standardize `Self` usage across the crate.

- Introduce `ErrorOutput`, `RenderOutput`, `PanicSilence`, `Verbosity`,
  `ColorOutput`, and `ProgressOutput` enums for clearer configuration
  semantics
- Make `GlobalResources`, `ProgramCell`, and
  `split_input`/`split_input_string` public
- Change hook info parameters to accept references and
  `split_input_string` to take `&str`
- Apply `Self` shorthand throughout implementations and add
  `#[must_use]` attributes where appropriate
- Enable strict clippy lints with targeted allowances

1 files changed, 4 insertions, 4 deletions

diff --git a/mingling_core/src/asset/node.rs b/mingling_core/src/asset/node.rs
index caf34ec..b9002b6 100644
--- a/mingling_core/src/asset/node.rs
+++ b/mingling_core/src/asset/node.rs
@@ -12,24 +12,24 @@ pub struct Node {
 impl Node {
     /// Append a new part to the node path.
     #[must_use]
-    pub fn join(self, node: impl Into<String>) -> Node {
+    pub fn join(self, node: impl Into<String>) -> Self {
         let mut new_node = self.node;
         new_node.push(node.into());
-        Node { node: new_node }
+        Self { node: new_node }
     }
 }
 
 impl From<&str> for Node {
     fn from(s: &str) -> Self {
         let node = s.split('.').map(|part| kebab_case!(part)).collect();
-        Node { node }
+        Self { node }
     }
 }
 
 impl From<String> for Node {
     fn from(s: String) -> Self {
         let node = s.split('.').map(|part| kebab_case!(part)).collect();
-        Node { node }
+        Self { node }
     }
 }