fix(whoami): detect and fall back to system git config for nostr login

Add GitSystem to SignerInfoSource so credentials stored in the system
git config (/etc/gitconfig) are included in the priority fallback chain
(local > global > system) and shown as a separate level in whoami output.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib/login/mod.rs b/src/lib/login/mod.rs
index 47847c3..938cec4 100644
--- a/src/lib/login/mod.rs
+++ b/src/lib/login/mod.rs
@@ -65,6 +65,7 @@ pub enum SignerInfo {
 pub enum SignerInfoSource {
     GitLocal,
     GitGlobal,
+    GitSystem,
     CommandLineArguments,
 }
 
@@ -91,6 +92,7 @@ fn print_logged_in_as(
             SignerInfoSource::CommandLineArguments => " via cli arguments",
             SignerInfoSource::GitLocal => " to local repository",
             SignerInfoSource::GitGlobal => "",
+            SignerInfoSource::GitSystem => " via system git config",
         }
     );
     Ok(())