refactor(api): demote internal types to pub(crate)

- SymbolChangeType: pub -> pub(crate), add #[non_exhaustive]
- change_type(): pub -> pub(crate)
- GitService: pub -> pub(crate)
- Progress: pub -> pub(crate)

Author: Sephyi

src/domain/symbol.rs

@@ -21,8 +21,9 @@ pub enum SymbolKind {
 
 /// How a symbol was affected by the change.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+#[non_exhaustive]
 #[allow(dead_code)]
-pub enum SymbolChangeType {
+pub(crate) enum SymbolChangeType {
     /// Symbol only exists in staged content (new symbol)
     Added,
     /// Symbol only exists in HEAD content (removed symbol)
@@ -57,7 +58,7 @@ impl CodeSymbol {
     /// Determine the change type for this symbol.
     #[must_use]
     #[allow(dead_code)]
-    pub fn change_type(&self) -> SymbolChangeType {
+    pub(crate) fn change_type(&self) -> SymbolChangeType {
         match (self.is_added, self.is_whitespace_only) {
             (true, None) => SymbolChangeType::Added,
             (false, None) => SymbolChangeType::Removed,

src/services/git.rs

@@ -11,7 +11,7 @@ use tokio::process::Command;
 use crate::domain::{ChangeStatus, DiffStats, FileCategory, FileChange, StagedChanges};
 use crate::error::{Error, Result};
 
-pub struct GitService {
+pub(crate) struct GitService {
     repo: gix::Repository,
     work_dir: PathBuf,
 }

src/services/progress.rs

@@ -11,7 +11,7 @@ use indicatif::{ProgressBar, ProgressStyle};
 ///
 /// Suppressed automatically in non-TTY environments (pipes, git hooks).
 /// Falls back to simple status messages when indicatif is not appropriate.
-pub struct Progress {
+pub(crate) struct Progress {
     bar: Option<ProgressBar>,
 }