test: disable GPG signing in all test helpers

Prevent GPG signing prompts (including Yubikey activation) during test runs
by explicitly disabling commit.gpgsign and tag.gpgsign in all test repository
creation helpers.

Modified:
- tests/common/purgatory_helpers.rs: create_test_repo_with_commit()
- src/git/mod.rs: create_test_repo_with_commit()
- src/purgatory/helpers.rs: create_test_repo_with_commit()

All test repositories now have GPG signing disabled regardless of global
git configuration.

2 files changed, 24 insertions, 0 deletions

diff --git a/src/git/mod.rs b/src/git/mod.rs
index 205e3bc..b3fee69 100644
--- a/src/git/mod.rs
+++ b/src/git/mod.rs
@@ -535,6 +535,17 @@ mod tests {
             .current_dir(&work_dir)
             .output()
             .unwrap();
+        // Disable GPG signing for tests (prevents yubikey prompts)
+        Command::new("git")
+            .args(["config", "commit.gpgsign", "false"])
+            .current_dir(&work_dir)
+            .output()
+            .unwrap();
+        Command::new("git")
+            .args(["config", "tag.gpgsign", "false"])
+            .current_dir(&work_dir)
+            .output()
+            .unwrap();
 
         // Create a file and commit
         fs::write(work_dir.join("README.md"), "# Test").unwrap();
diff --git a/src/purgatory/helpers.rs b/src/purgatory/helpers.rs
index 2e53778..93dc378 100644
--- a/src/purgatory/helpers.rs
+++ b/src/purgatory/helpers.rs
@@ -534,6 +534,19 @@ mod tests {
             .output()
             .expect("Failed to set name");
 
+        // Disable GPG signing for tests (prevents yubikey prompts)
+        Command::new("git")
+            .args(["config", "commit.gpgsign", "false"])
+            .current_dir(work_dir.path())
+            .output()
+            .expect("Failed to disable commit.gpgsign");
+
+        Command::new("git")
+            .args(["config", "tag.gpgsign", "false"])
+            .current_dir(work_dir.path())
+            .output()
+            .expect("Failed to disable tag.gpgsign");
+
         // Create a commit
         std::fs::write(work_dir.path().join("file.txt"), "content").unwrap();
         Command::new("git")