Initial public release

MCP (Model Context Protocol) server for reading and writing an Obsidian
vault, gated by OAuth-issued JWT bearer tokens. See README.md for setup.

Config/JwtOptions.cs

@@ -0,0 +1,27 @@
+namespace ObsidianMcp.Config;
+
+/// <summary>
+/// JWT 验签配置。
+/// 环境变量：Jwt__Issuer, Jwt__Audience, Jwt__SigningKey__Current, Jwt__SigningKey__Previous
+/// </summary>
+public class JwtOptions
+{
+    public const string Section = "Jwt";
+
+    /// <summary>期望的 iss claim（你的 auth server 的 issuer URL），必须通过 env 注入</summary>
+    public string Issuer { get; set; } = string.Empty;
+
+    /// <summary>期望的 aud claim，默认 obsidian</summary>
+    public string Audience { get; set; } = "obsidian";
+
+    public SigningKeyPair SigningKey { get; set; } = new();
+
+    public class SigningKeyPair
+    {
+        /// <summary>当前签名密钥（HS256 对称密钥），env: Jwt__SigningKey__Current</summary>
+        public string Current { get; set; } = string.Empty;
+
+        /// <summary>上一轮密钥，密钥轮换过渡期用，env: Jwt__SigningKey__Previous（可为空）</summary>
+        public string? Previous { get; set; }
+    }
+}