feat: refactor HTTP client setup for Github and Forgejo services

- Centralized HTTP client configuration for `GithubService` and `ForgejoService` using `AddHttpClient`.
- Enhanced maintainability by moving Forgejo token and base URL setup into DI-configured HTTP clients.
- Fixed `forgejoInstance` validation logic and adjusted release selection to prioritize the first non-prerelease.

Services/AppConfig.cs

@@ -24,7 +24,7 @@ public static class AppConfigLoader
 
         if (string.IsNullOrEmpty(forgejoInstance))
             throw new Exception("FORGEJO_INSTANCE environment variable is required");
-        if (!string.IsNullOrEmpty(forgejoToken) && forgejoInstance.EndsWith('/'))
+        if (!string.IsNullOrEmpty(forgejoInstance) && forgejoInstance.EndsWith('/'))
             forgejoInstance = forgejoInstance[..^1];
 
         if (string.IsNullOrEmpty(forgejoToken))

Services/ForgejoService.cs

@@ -20,7 +20,6 @@ public class ForgejoService(HttpClient httpClient, AppConfig config, ILogger<For
                 HttpMethod.Post,
                 new Uri($"{config.ForgejoInstacne}/api/v1/repos/{owner}/{repo}/releases"));
             request.Content = new StringContent(json, Encoding.UTF8, "application/json");
-            request.Headers.Authorization = new AuthenticationHeaderValue("token", config.ForgejoToken);
 
             using var response = await httpClient.SendAsync(request, token);
             response.EnsureSuccessStatusCode();
@@ -79,7 +78,6 @@ public class ForgejoService(HttpClient httpClient, AppConfig config, ILogger<For
                 HttpMethod.Post,
                 new Uri($"{config.ForgejoInstacne}/api/v1/repos/{owner}/{repo}/releases/{releaseId}/assets"));
             request.Content = formData;
-            request.Headers.Authorization = new AuthenticationHeaderValue("token", config.ForgejoToken);
 
             using var response = await httpClient.SendAsync(
                 request, HttpCompletionOption.ResponseHeadersRead, token);

Services/SyncService.cs

@@ -36,7 +36,7 @@ public class SyncService(
         var (owner, name) = ParseGithubUrl(repo.GithubUrl);
 
         var githubReleases = await githubService.FetchRepoReleasesAsync(owner, name, token);
-        var githubRelease = githubReleases.LastOrDefault(r => !r.Prerelease);
+        var githubRelease = githubReleases.FirstOrDefault(r => !r.Prerelease);
         if (githubRelease is null)
         {
             logger.LogWarning("{Owner}/{Name}: no GitHub release found, skipping", owner, name);
@@ -44,7 +44,7 @@ public class SyncService(
         }
 
         var forgejoReleases = await forgejoService.FetchRepoReleasesAsync(owner, name, token);
-        var forgejoRelease = forgejoReleases.LastOrDefault(r => !r.Prerelease);
+        var forgejoRelease = forgejoReleases.FirstOrDefault(r => !r.Prerelease);
 
         var releaseId = await ResolveReleaseIdAsync(owner, name, githubRelease, forgejoRelease, token);