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, 5 insertions, 5 deletions

diff --git a/mingling_core/src/comp/flags.rs b/mingling_core/src/comp/flags.rs
index 8aecf1b..0867122 100644
--- a/mingling_core/src/comp/flags.rs
+++ b/mingling_core/src/comp/flags.rs
@@ -23,11 +23,11 @@ pub enum ShellFlag {
 impl From<String> for ShellFlag {
     fn from(s: String) -> Self {
         match s.trim().to_lowercase().as_str() {
-            "zsh" => ShellFlag::Zsh,
-            "bash" => ShellFlag::Bash,
-            "fish" => ShellFlag::Fish,
-            "pwsh" | "ps1" | "powershell" => ShellFlag::Powershell,
-            other => ShellFlag::Other(snake_case!(other)),
+            "zsh" => Self::Zsh,
+            "bash" => Self::Bash,
+            "fish" => Self::Fish,
+            "pwsh" | "ps1" | "powershell" => Self::Powershell,
+            other => Self::Other(snake_case!(other)),
         }
     }
 }