feat: 公开宿主组合加载 API、Forge 风格依赖版本区间与加载顺序、程序集解析策略

- ShrinkModComponentDiscovery.Discover 公开：只发现、不执行生命周期
- ShrinkModLoader.LoadComposed / ShrinkModCordisRuntime.ApplyComposedAsync：宿主提供元数据组合加载，支持纯数据包与 IShrinkModWrapper 公开真实实例
- 公开 TryAttachEventBusInstance，随生命周期逆操作释放
- 依赖新增 VersionRange（Maven/Forge 区间语法）与 Ordering（Before/After）
- AssemblyResolvePolicy 可限制跨模组程序集解析

Runtime/Metadata/ShrinkModVersionRange.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace ShrinkModFramework
+{
+    /// <summary>Maven 风格区间/并集；裸版本表示最低版本。版本比较沿用框架规则，数字尾部零等价。</summary>
+    public sealed class ShrinkModVersionRange
+    {
+        private readonly List<Func<string, bool>> _ranges = new();
+        private ShrinkModVersionRange() { }
+
+        public static ShrinkModVersionRange Parse(string expression)
+        {
+            var result = new ShrinkModVersionRange();
+            if (string.IsNullOrWhiteSpace(expression)) return result;
+            var text = expression.Trim();
+            if (text[0] != '[' && text[0] != '(')
+            {
+                ValidateVersion(text);
+                result._ranges.Add(version => ShrinkVersionUtility.Compare(version, text) >= 0);
+                return result;
+            }
+            while (text.Length > 0)
+            {
+                var end = text.IndexOfAny(new[] { ']', ')' });
+                if (end < 0 || (text[0] != '[' && text[0] != '(')) throw Invalid(expression);
+                var lowerInclusive = text[0] == '[';
+                var upperInclusive = text[end] == ']';
+                var bounds = text.Substring(1, end - 1).Split(',');
+                string lower, upper;
+                if (bounds.Length == 1)
+                {
+                    if (!lowerInclusive || !upperInclusive) throw Invalid(expression);
+                    lower = upper = bounds[0].Trim();
+                    ValidateVersion(lower);
+                }
+                else if (bounds.Length == 2)
+                {
+                    lower = bounds[0].Trim(); upper = bounds[1].Trim();
+                    if (lower.Length > 0) ValidateVersion(lower);
+                    if (upper.Length > 0) ValidateVersion(upper);
+                    if ((lower.Length == 0 && lowerInclusive) || (upper.Length == 0 && upperInclusive))
+                        throw Invalid(expression);
+                    if (lower.Length > 0 && upper.Length > 0)
+                    {
+                        var comparison = ShrinkVersionUtility.Compare(lower, upper);
+                        if (comparison > 0 || (comparison == 0 && (!lowerInclusive || !upperInclusive))) throw Invalid(expression);
+                    }
+                }
+                else throw Invalid(expression);
+                result._ranges.Add(version =>
+                    (lower.Length == 0 || (lowerInclusive ? ShrinkVersionUtility.Compare(version, lower) >= 0 : ShrinkVersionUtility.Compare(version, lower) > 0)) &&
+                    (upper.Length == 0 || (upperInclusive ? ShrinkVersionUtility.Compare(version, upper) <= 0 : ShrinkVersionUtility.Compare(version, upper) < 0)));
+                text = text.Substring(end + 1).Trim();
+                if (text.Length == 0) break;
+                if (text[0] != ',' || text.Length == 1) throw Invalid(expression);
+                text = text.Substring(1).Trim();
+                if (text.Length == 0) throw Invalid(expression);
+            }
+            return result;
+        }
+
+        public bool Contains(string version)
+        {
+            ValidateVersion(version);
+            return _ranges.Count == 0 || _ranges.Any(range => range(version));
+        }
+
+        private static void ValidateVersion(string version)
+        {
+            if (string.IsNullOrWhiteSpace(version) || !Regex.IsMatch(version, @"^[0-9]+(?:[.][0-9]+)*(?:[-+][A-Za-z0-9.-]+)?$"))
+                throw Invalid(version);
+        }
+        private static FormatException Invalid(string value) => new FormatException($"Invalid mod version range: '{value}'.");
+    }
+}