根据提供的code differences信息，由于没有具体的代码变更内容，我将生成一个通用的commit message模板：

```
docs(readme): 更新文档说明

- 添加项目使用指南
- 完善API接口说明
- 修正错误的配置示例
```

注意：由于您提供的code differences部分为空，以上是一个示例模板。当您有具体的代码变更时，请提供详细的变更内容以便生成更准确的commit message。

Assets/Prefabs/特效/扩散光圈/ShockwaveRing.cs

@@ -0,0 +1,54 @@
+using UnityEngine;
+
+/// <summary>
+/// 石头人砸地冲击波 · 触发脚本
+/// 挂在平躺的 Quad 上，砸地命中帧调用 Play()
+/// </summary>
+[RequireComponent(typeof(Renderer))]
+public class ShockwaveRing : MonoBehaviour
+{
+    [Header("扩散持续时间（秒）")]
+    public float duration = 0.6f;
+
+    [Header("起始缩放（可选，Play 时自动应用）")]
+    public Vector3 startScale = new Vector3(8f, 8f, 1f);
+
+    private Material mat;
+    private float timer = -1f;
+
+    void Start()
+    {
+        // 用 .material 生成独立实例，不影响材质资产
+        mat = GetComponent<Renderer>().material;
+        mat.SetFloat("_Progress", 0f);
+        transform.localScale = startScale;
+        gameObject.SetActive(false);
+    }
+
+    /// <summary>
+    /// 外部调用：石头人拳头砸到地面的那一帧触发
+    /// </summary>
+    public void Play()
+    {
+        gameObject.SetActive(true);
+        timer = 0f;
+        mat.SetFloat("_Progress", 0f);
+    }
+
+    void Update()
+    {
+        if (timer < 0f) return;
+
+        timer += Time.deltaTime;
+        float progress = Mathf.Clamp01(timer / duration);
+        mat.SetFloat("_Progress", progress);
+
+        // 扩散结束自动隐藏
+        if (progress >= 1f)
+        {
+            gameObject.SetActive(false);
+            timer = -1f;
+        }
+    }
+}
+//（注：内容由AI生成）

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Assets/Prefabs/特效/扩散光圈/ShockwaveRing.prefab.meta

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Assets/Prefabs/特效/扩散光圈/ShockwaveRing.shader

@@ -0,0 +1,73 @@
+// 石头人砸地 · 扩散冲击波圆环 Shader
+// 用法：挂在一个平躺的 Quad 上，由 C# 脚本驱动 _Progress 从 0→1
+Shader "Custom/ShockwaveRing"
+{
+    Properties
+    {
+        _RingColor ("圆环颜色", Color) = (0.8, 0.75, 0.6, 1.0)
+        _Progress ("扩散进度 (0~1)", Range(0, 1)) = 0
+        _RingWidth ("圆环粗细", Range(0.02, 0.3)) = 0.08
+        _Softness ("边缘柔化", Range(0.001, 0.1)) = 0.02
+    }
+    SubShader
+    {
+        Tags { "RenderType"="Transparent" "Queue"="Transparent" "IgnoreProjector"="True" }
+        LOD 100
+        ZWrite Off
+        Blend SrcAlpha OneMinusSrcAlpha
+
+        Pass
+        {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float2 uv : TEXCOORD0;
+                float4 vertex : SV_POSITION;
+            };
+
+            float4 _RingColor;
+            float _Progress;
+            float _RingWidth;
+            float _Softness;
+
+            v2f vert (appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.uv = v.uv;
+                return o;
+            }
+
+            fixed4 frag (v2f i) : SV_Target
+            {
+                // 以 UV 中心(0.5,0.5)为圆心
+                float2 p = i.uv - 0.5;
+                float dist = length(p);
+
+                // 当前圆环半径：从中心(0)扩散到边缘(0.5)
+                float radius = _Progress * 0.5;
+                float inner = radius - _RingWidth;
+
+                // 只保留 [inner, radius] 这一圈，边缘柔化
+                float ring = smoothstep(inner - _Softness, inner, dist)
+                           * (1.0 - smoothstep(radius - _Softness, radius, dist));
+
+                // 越扩散越淡
+                float alpha = ring * (1.0 - _Progress) * _RingColor.a;
+
+                return float4(_RingColor.rgb, alpha);
+            }
+            ENDCG
+        }
+    }
+}

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