fix: enforce prefix search semantics and fix Gogs branch existence scan

Author: HarshMN2345

src/VCS/Adapter/Git/GitHub.php

@@ -846,8 +846,14 @@ private function listBranchesPage(string $owner, string $repositoryName, int $pe
         $pageInfo = $refs['pageInfo'] ?? [];
         $hasNext = $pageInfo['hasNextPage'] ?? false;
 
+        // GitHub's query param does substring matching; post-filter to enforce prefix semantics.
+        $names = array_map(fn ($branch) => $branch['name'] ?? '', $refs['nodes'] ?? []);
+        if ($search !== '') {
+            $names = array_values(array_filter($names, fn ($name) => str_starts_with($name, $search)));
+        }
+
         return [
-            'items' => array_values(array_map(fn ($branch) => $branch['name'] ?? '', $refs['nodes'] ?? [])),
+            'items' => array_values($names),
             'hasNext' => $hasNext,
             'nextCursor' => $hasNext ? ($pageInfo['endCursor'] ?? null) : null,
         ];

src/VCS/Adapter/Git/Gogs.php

@@ -260,9 +260,18 @@ public function getCommit(string $owner, string $repositoryName, string $commitH
      */
     public function getLatestCommit(string $owner, string $repositoryName, string $branch): array
     {
-        // Gogs ignores sha param — verify branch exists first
-        $result = $this->listBranches($owner, $repositoryName);
-        if (!in_array($branch, $result['items'], true)) {
+        // Gogs ignores sha param — verify branch exists by scanning all pages
+        $page = 1;
+        $found = false;
+        do {
+            $result = $this->listBranches($owner, $repositoryName, 100, $page);
+            if (in_array($branch, $result['items'], true)) {
+                $found = true;
+                break;
+            }
+            $page++;
+        } while ($result['hasNext']);
+        if (!$found) {
             throw new Exception("Branch '{$branch}' not found");
         }