perf: eliminate repeated workspace git discovery (#1842)

* perf: eliminate repeated workspace git discovery

refs #1838

* fix: keep workspace labels current without extra redraws

refs #1838

* fix: retain discovered workspace git metadata

refs #1838

1 files changed, 11 insertions, 5 deletions

diff --git a/src/workspace/git/discovery.rs b/src/workspace/git/discovery.rs
index 4edfcbc2..9e1be74d 100644
--- a/src/workspace/git/discovery.rs
+++ b/src/workspace/git/discovery.rs
@@ -25,6 +25,10 @@ pub fn derive_label_from_cwd(cwd: &Path) -> String {
         }
     }
 
+    fallback_label_from_cwd(cwd)
+}
+
+pub fn fallback_label_from_cwd(cwd: &Path) -> String {
     if let Ok(home) = std::env::var("HOME") {
         let home = Path::new(&home);
         if cwd == home {
@@ -56,9 +60,11 @@ pub fn git_worktree_info(cwd: &Path) -> Option<GitWorktreeInfo> {
 }
 
 pub fn git_space_metadata(cwd: &Path) -> Option<GitSpaceMetadata> {
-    git_repo_root(cwd)?;
-
     let info = git_worktree_info(cwd)?;
+    Some(git_space_metadata_from_info(&info))
+}
+
+pub(super) fn git_space_metadata_from_info(info: &GitWorktreeInfo) -> GitSpaceMetadata {
     let key = canonicalize_best_effort_path(&info.git_common_dir)
         .display()
         .to_string();
@@ -80,13 +86,13 @@ pub fn git_space_metadata(cwd: &Path) -> Option<GitSpaceMetadata> {
         .and_then(|name| name.to_str())
         .unwrap_or("repo")
         .to_string();
-    Some(GitSpaceMetadata {
+    GitSpaceMetadata {
         key,
         checkout_key,
         label,
-        repo_root: info.repo_root,
+        repo_root: info.repo_root.clone(),
         is_linked_worktree: info.is_linked_worktree,
-    })
+    }
 }
 
 pub(super) fn canonicalize_best_effort_path(path: &Path) -> PathBuf {