gitea-mcp: 初次落地 Gitea MCP Server (.NET 10, V1 only-read)

把 Gitea (git.zhengchentao.win) 通过 MCP 暴露给 Claude.ai：列 repo、读代码、看 commits / issues / PR / orgs / packages / actions。
设计文档见 vault Coding/gitea-mcp/gitea-mcp 设计.md。
代码模板复用 obsidian-mcp（.NET 10 + ModelContextProtocol SDK + JwtBearer）。

19 个只读 Tool（全部 scope=read:gitea）：

Repo / 文件：
- list_repos / read_repo
- list_tree（max_entries=500 防爆）
- read_file（max_bytes=1MB，超出 truncated=true）
- search_code（走 /repos/search-code，indexer 未启用时返回结构化错误说明）

分支 / 提交：
- list_branches / list_commits / read_commit（diff 文件数限 50）

Issue / PR：
- list_issues / read_issue（含评论）
- list_pulls / read_pull（含评论 + 改动文件列表）

Org / Package（用户额外授权 read:organization + read:package）：
- list_orgs / read_org
- list_packages / read_package

Gitea Actions（运维友好）：
- list_workflow_runs / read_run_log

技术栈：
- .NET 10 + ModelContextProtocol SDK 1.0
- HttpClientFactory + Microsoft.Extensions.Http.Resilience（指数 backoff，5xx/429/网络错误重试）
- JwtBearer (HS256, Current+Previous fallback, MapInboundClaims=false)
- aud=gitea, scope=read:gitea, iss=https://auth.zhengchentao.win

Gitea API client：
- Authorization: token <PAT> (admin PAT，仅 read scope)
- BaseUrl=https://git.zhengchentao.win
- 错误映射：401/403 → UnauthorizedAccessException，404 → KeyNotFoundException，5xx → InvalidOperationException
- RepoBlacklist 黑名单（owner/repo 精确匹配，默认空）

部署：
- Dockerfile multi-stage，COPY --chown，non-root user
- .gitea/workflows/build-image.yml：build + deploy 双 job，buildkit v0.13.2
- 容器内 :8080，宿主端口 9092
- 子域名 git-mcp.zhengchentao.win（区别于 Gitea 本体 git.zhengchentao.win）

测试：6/6 单测过（GiteaRepoFilter 黑名单匹配）

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Tools/PackageTools.cs

@@ -0,0 +1,61 @@
+using GiteaMcp.Services;
+using ModelContextProtocol.Server;
+using System.ComponentModel;
+
+namespace GiteaMcp.Tools;
+
+/// <summary>Package Registry Tool：list_packages / read_package</summary>
+[McpServerToolType]
+public class PackageTools(GiteaApiClient gitea)
+{
+    [McpServerTool]
+    [Description(
+        "List packages in Gitea's built-in package registry for a given owner (user or org). " +
+        "Supports all package types: container (Docker/OCI), generic, npm, pypi, maven, nuget, etc. " +
+        "Returns: package name, type, version, creator, and creation date. " +
+        "Use read_package to get detailed metadata (e.g. OCI manifest digest for container images).")]
+    public async Task<object> list_packages(
+        [Description("Owner (user login or org name) whose packages to list.")] string owner,
+        [Description("Package type filter: 'container', 'generic', 'npm', 'pypi', 'maven', 'nuget', etc. Omit for all types.")] string? type = null,
+        [Description("Max packages to return. Default 50.")] int? limit = null,
+        CancellationToken ct = default)
+    {
+        var lim = Math.Min(limit ?? 50, 50);
+        var packages = await gitea.GetPackagesAsync(owner, type, lim, ct);
+
+        return packages.Select(p => new
+        {
+            owner = p.Owner?.Login,
+            name = p.Name,
+            type = p.Type,
+            version = p.Version,
+            creator = p.Creator?.Login,
+            created = p.Created,
+        }).ToList();
+    }
+
+    [McpServerTool]
+    [Description(
+        "Get metadata for a specific package version in Gitea's package registry. " +
+        "For container images, this includes the OCI manifest digest and image details. " +
+        "Use list_packages to discover available packages and their versions.")]
+    public async Task<object> read_package(
+        [Description("Owner (user login or org name).")] string owner,
+        [Description("Package type: 'container', 'generic', 'npm', etc.")] string type,
+        [Description("Package name.")] string name,
+        [Description("Package version string (e.g. 'latest', '1.0.0', 'main').")] string version,
+        CancellationToken ct = default)
+    {
+        var pkg = await gitea.GetPackageAsync(owner, type, name, version, ct);
+
+        return new
+        {
+            owner = pkg.Owner?.Login,
+            name = pkg.Name,
+            type = pkg.Type,
+            version = pkg.Version,
+            creator = pkg.Creator?.Login,
+            created = pkg.Created,
+        };
+    }
+}