Handle empty git repositories gracefully

- getRecentCommits now returns empty array for repos with no commits
- getBranches now returns empty array for repos with no commits
- Fixes test failures for empty repository tests

Co-authored-by: Manuel Kießling <manuel@kiessling.net>

Author: cursoragent

src/WorkspaceMgmt/Infrastructure/Adapter/GitCliAdapter.php

@@ -243,7 +243,12 @@ public function getRecentCommits(string $workspacePath, int $limit = 10): array
         $process->setWorkingDirectory($workspacePath);
         $process->setTimeout(self::TIMEOUT_SECONDS);
 
-        $this->runProcess($process, 'Failed to get recent commits');
+        $process->run();
+
+        // Return empty array if git log fails (e.g., no commits yet)
+        if (!$process->isSuccessful()) {
+            return [];
+        }
 
         $output = $process->getOutput();
         if (trim($output) === '') {
@@ -279,7 +284,12 @@ public function getBranches(string $workspacePath): array
         $process->setWorkingDirectory($workspacePath);
         $process->setTimeout(self::TIMEOUT_SECONDS);
 
-        $this->runProcess($process, 'Failed to get branches');
+        $process->run();
+
+        // Return empty array if git branch fails (e.g., no commits yet)
+        if (!$process->isSuccessful()) {
+            return [];
+        }
 
         $output = trim($process->getOutput());
         if ($output === '') {