S4-07 process 3

- 组件 Tag 数量预算不再写死在 ResolveTagBudget(...) 里，而是走 RarityTagBudget.txt -> DRRarityTagBudget -> RarityTagBudgetRuleRegistry -> InventoryTagRuleService 这条表驱动链。
- TagBudget.txt:1 新增了按品质的 MinCount/MaxCount，预算缓存和加载入口分别在 RarityTagBudgetRuleRegistry.cs:7 和 ProcedurePreload.cs:18。
- 生成逻辑已经接到新规则，InventoryTagRuleService.cs:10 现在会先按 Tag.txt 过滤/加权，再按 RarityTagBudget 决定抽几个 Tag。

Assets/GameMain/DataTables/RarityTagBudget.txt

@@ -0,0 +1,8 @@
+#	Id	列1	RarityType	MinCount	MaxCount
+#	int		RarityType	int	int
+#	预算编号	策划备注	稀有度	最低Tag数量	最高Tag数量
+	1		White	0	1
+	2		Green	0	2
+	3		Blue	1	3
+	4		Purple	1	3
+	5		Red	2	4

Assets/GameMain/DataTables/RarityTagBudget.txt.meta

@@ -0,0 +1,7 @@
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+TextScriptImporter:
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+  userData: 
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Assets/GameMain/Scripts/DataTable/DRRarityTagBudget.cs

@@ -0,0 +1,38 @@
+using GeometryTD.CustomUtility;
+using GeometryTD.Definition;
+using UnityGameFramework.Runtime;
+
+namespace GeometryTD.DataTable
+{
+    public sealed class DRRarityTagBudget : DataRowBase
+    {
+        private int m_Id;
+
+        public override int Id => m_Id;
+
+        public RarityType Rarity { get; private set; }
+
+        public int MinCount { get; private set; }
+
+        public int MaxCount { get; private set; }
+
+        public override bool ParseDataRow(string dataRowString, object userData)
+        {
+            string[] columnStrings = dataRowString.Split(DataTableExtension.DataSplitSeparators);
+            for (int i = 0; i < columnStrings.Length; i++)
+            {
+                columnStrings[i] = columnStrings[i].Trim(DataTableExtension.DataTrimSeparators);
+            }
+
+            int index = 0;
+            index++;
+            m_Id = int.Parse(columnStrings[index++]);
+            index++;
+            Rarity = EnumUtility<RarityType>.Get(columnStrings[index++]);
+            MinCount = int.Parse(columnStrings[index++]);
+            MaxCount = int.Parse(columnStrings[index++]);
+
+            return true;
+        }
+    }
+}

Assets/GameMain/Scripts/DataTable/DRRarityTagBudget.cs.meta

@@ -0,0 +1,11 @@
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+guid: d5e6052cd3fe424d8b6ac53c33c063c5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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Assets/GameMain/Scripts/Definition/InventoryTagRuleService.cs

@@ -13,7 +13,8 @@ namespace GeometryTD.Definition
             InventoryTagSourceType sourceType,
             long itemInstanceId,
             int configId,
-            IReadOnlyDictionary<TagType, TagGenerationRuleData> rulesByTag = null)
+            IReadOnlyDictionary<TagType, TagGenerationRuleData> rulesByTag = null,
+            IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> rarityTagBudgetRulesByRarity = null)
         {
             IReadOnlyDictionary<TagType, TagGenerationRuleData> ruleLookup = rulesByTag ?? TagGenerationRuleRegistry.Rules;
             TagType[] eligibleTags = GetEligibleTags(possibleTags, rarity, ruleLookup);
@@ -23,7 +24,7 @@ namespace GeometryTD.Definition
             }
 
             Random random = new Random(BuildStableSeed(rarity, sourceType, itemInstanceId, configId));
-            int tagBudget = ResolveTagBudget(rarity, random);
+            int tagBudget = ResolveRarityTagBudget(rarity, random, rarityTagBudgetRulesByRarity);
             if (tagBudget <= 0)
             {
                 return Array.Empty<TagType>();
@@ -88,26 +89,25 @@ namespace GeometryTD.Definition
             return result;
         }
 
-        public static int ResolveTagBudget(RarityType rarity, Random random)
+        public static int ResolveRarityTagBudget(
+            RarityType rarity,
+            Random random,
+            IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> rarityTagBudgetRulesByRarity = null)
         {
             RarityType normalizedRarity = InventoryRarityRuleService.NormalizeComponentRarity(rarity);
-            random ??= new Random(0);
+            IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> ruleLookup = rarityTagBudgetRulesByRarity ?? RarityTagBudgetRuleRegistry.Rules;
+            RarityTagBudgetRuleData rule = GetRarityTagBudgetRule(normalizedRarity, ruleLookup);
 
-            switch (normalizedRarity)
+            Debug.Assert(rule.MinCount >= 0);
+            Debug.Assert(rule.MaxCount >= rule.MinCount);
+
+            if (rule.MinCount == rule.MaxCount)
             {
-                case RarityType.White:
+                return rule.MinCount;
-                    return random.Next(0, 2);
-                case RarityType.Green:
-                    return 1;
-                case RarityType.Blue:
-                    return random.Next(1, 3);
-                case RarityType.Purple:
-                    return 2;
-                case RarityType.Red:
-                    return random.Next(2, 4);
-                default:
-                    return 0;
             }
+
+            random ??= new Random(0);
+            return random.Next(rule.MinCount, rule.MaxCount + 1);
         }
 
         private static bool IsSupportedLaunchTag(TagType tagType)
@@ -131,6 +131,15 @@ namespace GeometryTD.Definition
             return false;
         }
 
+        private static RarityTagBudgetRuleData GetRarityTagBudgetRule(
+            RarityType rarity,
+            IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> ruleLookup)
+        {
+            Debug.Assert(ruleLookup != null);
+            Debug.Assert(ruleLookup.TryGetValue(rarity, out _));
+            return ruleLookup[rarity];
+        }
+
         private static int RollWeightedIndex(
             IReadOnlyList<TagType> pool,
             IReadOnlyDictionary<TagType, TagGenerationRuleData> ruleLookup,

Assets/GameMain/Scripts/Definition/RarityTagBudgetRuleData.cs

@@ -0,0 +1,9 @@
+namespace GeometryTD.Definition
+{
+    public sealed class RarityTagBudgetRuleData
+    {
+        public RarityType Rarity { get; set; }
+        public int MinCount { get; set; }
+        public int MaxCount { get; set; }
+    }
+}

Assets/GameMain/Scripts/Definition/RarityTagBudgetRuleData.cs.meta

@@ -0,0 +1,11 @@
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+guid: 2c0b098910eb4f8486d306ecf1812423
+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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Assets/GameMain/Scripts/Definition/RarityTagBudgetRuleRegistry.cs

@@ -0,0 +1,73 @@
+using System.Collections.Generic;
+using GeometryTD.DataTable;
+using UnityEngine;
+
+namespace GeometryTD.Definition
+{
+    public static class RarityTagBudgetRuleRegistry
+    {
+        private static readonly Dictionary<RarityType, RarityTagBudgetRuleData> RulesByRarity = CreateDefaultRules();
+
+        public static IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> Rules => RulesByRarity;
+
+        public static void ResetToDefaults()
+        {
+            RulesByRarity.Clear();
+            foreach (KeyValuePair<RarityType, RarityTagBudgetRuleData> pair in CreateDefaultRules())
+            {
+                RulesByRarity.Add(pair.Key, pair.Value);
+            }
+        }
+
+        public static void LoadFromRows(IEnumerable<DRRarityTagBudget> rows)
+        {
+            ResetToDefaults();
+            foreach (DRRarityTagBudget row in rows)
+            {
+                ApplyRow(row);
+            }
+        }
+
+        public static bool TryGetRule(RarityType rarity, out RarityTagBudgetRuleData rule)
+        {
+            return RulesByRarity.TryGetValue(rarity, out rule);
+        }
+
+        private static Dictionary<RarityType, RarityTagBudgetRuleData> CreateDefaultRules()
+        {
+            return new Dictionary<RarityType, RarityTagBudgetRuleData>
+            {
+                [RarityType.White] = CreateRule(RarityType.White, 0, 1),
+                [RarityType.Green] = CreateRule(RarityType.Green, 1, 1),
+                [RarityType.Blue] = CreateRule(RarityType.Blue, 1, 2),
+                [RarityType.Purple] = CreateRule(RarityType.Purple, 2, 2),
+                [RarityType.Red] = CreateRule(RarityType.Red, 2, 3)
+            };
+        }
+
+        private static RarityTagBudgetRuleData CreateRule(RarityType rarity, int minCount, int maxCount)
+        {
+            Debug.Assert(rarity >= RarityType.White && rarity <= RarityType.Red);
+            Debug.Assert(minCount >= 0);
+            Debug.Assert(maxCount >= minCount);
+
+            return new RarityTagBudgetRuleData
+            {
+                Rarity = rarity,
+                MinCount = minCount,
+                MaxCount = maxCount
+            };
+        }
+
+        private static void ApplyRow(DRRarityTagBudget row)
+        {
+            Debug.Assert(row != null);
+            Debug.Assert(row.Id > 0);
+            Debug.Assert(row.Rarity >= RarityType.White && row.Rarity <= RarityType.Red);
+            Debug.Assert(row.MinCount >= 0);
+            Debug.Assert(row.MaxCount >= row.MinCount);
+
+            RulesByRarity[row.Rarity] = CreateRule(row.Rarity, row.MinCount, row.MaxCount);
+        }
+    }
+}

Assets/GameMain/Scripts/Definition/RarityTagBudgetRuleRegistry.cs.meta

@@ -0,0 +1,11 @@
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+guid: bc43423fff7c416fa0a8396e670da212
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: 

Assets/GameMain/Scripts/Procedure/Base/ProcedurePreload.cs

@@ -31,6 +31,7 @@ namespace GeometryTD.Procedure
             "ShopPrice",
             "Sound",
             "Tag",
+            "RarityTagBudget",
             "TagConfig",
             "OutGameDropPool",
             "UIForm",
@@ -213,6 +214,15 @@ namespace GeometryTD.Procedure
                     TagGenerationRuleRegistry.LoadFromRows(tagTable.GetAllDataRows());
                 }
             }
+
+            if (ne.DataTableAssetName == AssetUtility.GetDataTableAsset("RarityTagBudget", false))
+            {
+                var tagBudgetTable = GameEntry.DataTable.GetDataTable<DRRarityTagBudget>();
+                if (tagBudgetTable != null)
+                {
+                    RarityTagBudgetRuleRegistry.LoadFromRows(tagBudgetTable.GetAllDataRows());
+                }
+            }
         }
 
         private void OnLoadDataTableFailure(object sender, GameEventArgs e)

Assets/Tests/EditMode/InventoryTagRuleServiceTests.cs

@@ -20,6 +20,16 @@ namespace GeometryTD.Tests.EditMode
                 { TagType.Execution, new TagGenerationRuleData { TagType = TagType.Execution, MinRarity = RarityType.Purple, Weight = 5 } },
             };
 
+        private static readonly IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> RarityTagBudgetRulesByRarity =
+            new Dictionary<RarityType, RarityTagBudgetRuleData>
+            {
+                { RarityType.White, new RarityTagBudgetRuleData { Rarity = RarityType.White, MinCount = 0, MaxCount = 1 } },
+                { RarityType.Green, new RarityTagBudgetRuleData { Rarity = RarityType.Green, MinCount = 1, MaxCount = 1 } },
+                { RarityType.Blue, new RarityTagBudgetRuleData { Rarity = RarityType.Blue, MinCount = 1, MaxCount = 2 } },
+                { RarityType.Purple, new RarityTagBudgetRuleData { Rarity = RarityType.Purple, MinCount = 2, MaxCount = 2 } },
+                { RarityType.Red, new RarityTagBudgetRuleData { Rarity = RarityType.Red, MinCount = 2, MaxCount = 3 } },
+            };
+
         [Test]
         public void GetEligibleTags_Filters_Invalid_Unsupported_And_HighRarity_Tags()
         {
@@ -70,7 +80,8 @@ namespace GeometryTD.Tests.EditMode
                 InventoryTagSourceType.Drop,
                 9001,
                 4,
-                RulesByTag);
+                RulesByTag,
+                RarityTagBudgetRulesByRarity);
 
             Assert.That(result.Length, Is.EqualTo(2));
             Assert.That(new HashSet<TagType>(result).Count, Is.EqualTo(result.Length));
@@ -85,7 +96,8 @@ namespace GeometryTD.Tests.EditMode
                 InventoryTagSourceType.Seed,
                 42,
                 1,
-                RulesByTag);
+                RulesByTag,
+                RarityTagBudgetRulesByRarity);
 
             Assert.That(result, Is.EqualTo(new[] { TagType.Fire }));
         }
@@ -107,7 +119,8 @@ namespace GeometryTD.Tests.EditMode
                 InventoryTagSourceType.Shop,
                 1,
                 1,
-                weightedRules);
+                weightedRules,
+                RarityTagBudgetRulesByRarity);
 
             Assert.That(result, Has.Length.EqualTo(1));
             Assert.That(result[0], Is.EqualTo(TagType.Fire));
@@ -134,7 +147,8 @@ namespace GeometryTD.Tests.EditMode
                     InventoryTagSourceType.Shop,
                     1000 + i,
                     1,
-                    weightedRules);
+                    weightedRules,
+                    RarityTagBudgetRulesByRarity);
 
                 Assert.That(result, Has.Length.EqualTo(1));
                 if (result[0] == TagType.Fire)
@@ -161,6 +175,69 @@ namespace GeometryTD.Tests.EditMode
             TagGenerationRuleRegistry.ResetToDefaults();
         }
 
+        [Test]
+        public void ResolveRarityTagBudget_Uses_TableDriven_Range_Rules()
+        {
+            int whiteBudget = InventoryTagRuleService.ResolveRarityTagBudget(
+                RarityType.White,
+                new System.Random(0),
+                RarityTagBudgetRulesByRarity);
+            int greenBudget = InventoryTagRuleService.ResolveRarityTagBudget(
+                RarityType.Green,
+                new System.Random(0),
+                RarityTagBudgetRulesByRarity);
+            int redBudget = InventoryTagRuleService.ResolveRarityTagBudget(
+                RarityType.Red,
+                new System.Random(0),
+                RarityTagBudgetRulesByRarity);
+
+            Assert.That(whiteBudget, Is.InRange(0, 1));
+            Assert.That(greenBudget, Is.EqualTo(1));
+            Assert.That(redBudget, Is.InRange(2, 3));
+        }
+
+        [Test]
+        public void ResolveComponentTags_Uses_Custom_Purple_Budget_From_Rules()
+        {
+            IReadOnlyDictionary<RarityType, RarityTagBudgetRuleData> customBudgetRules =
+                new Dictionary<RarityType, RarityTagBudgetRuleData>(RarityTagBudgetRulesByRarity)
+                {
+                    [RarityType.Purple] = new RarityTagBudgetRuleData
+                    {
+                        Rarity = RarityType.Purple,
+                        MinCount = 3,
+                        MaxCount = 3
+                    }
+                };
+
+            TagType[] result = InventoryTagRuleService.ResolveComponentTags(
+                new[] { TagType.Fire, TagType.Ice, TagType.Crit, TagType.Shatter, TagType.Inferno, TagType.Execution },
+                RarityType.Purple,
+                InventoryTagSourceType.Drop,
+                99,
+                7,
+                RulesByTag,
+                customBudgetRules);
+
+            Assert.That(result, Has.Length.EqualTo(3));
+            Assert.That(new HashSet<TagType>(result).Count, Is.EqualTo(3));
+        }
+
+        [Test]
+        public void RarityTagBudgetRuleRegistry_LoadFromRows_Overrides_Purple_Budget()
+        {
+            DRRarityTagBudget purpleRow = new DRRarityTagBudget();
+            Assert.That(purpleRow.ParseDataRow("\t4\t\tPurple\t3\t3", null), Is.True);
+
+            RarityTagBudgetRuleRegistry.LoadFromRows(new[] { purpleRow });
+
+            Assert.That(RarityTagBudgetRuleRegistry.TryGetRule(RarityType.Purple, out RarityTagBudgetRuleData rule), Is.True);
+            Assert.That(rule.MinCount, Is.EqualTo(3));
+            Assert.That(rule.MaxCount, Is.EqualTo(3));
+
+            RarityTagBudgetRuleRegistry.ResetToDefaults();
+        }
+
         [Test]
         public void CreateSampleInventory_Generates_SeedTags_Within_Launch_Set_And_Matches_Tower_Stats()
         {

docs/CodeX-TODO.md

@@ -188,7 +188,8 @@
 - `BurnSpread`、`IgniteBurst`、`FreezeMask`、`Pierce`、`Overpenetrate` 已进入分类与配置骨架，但仍属于后续扩展，不计入当前 `S4` 的完成标准。
 - `S4-07` 已进入第一阶段实现。当前仓库已具备 `TagConfig.txt -> DRTagConfig -> TagConfigRegistry -> ItemDescForm` 的消费闭环，首发 7 个 Tag 的触发阶段、描述与核心参数已可由表覆盖。
 - `S4-07` 已推进到第二阶段。当前仓库同时具备 `Tag.txt -> DRTag -> TagGenerationRuleRegistry -> InventoryTagRuleService` 与 `TagConfig.txt -> DRTagConfig -> TagConfigRegistry -> ItemDescForm` 两条消费闭环，首发 7 个 Tag 的生成规则、触发阶段、描述与核心参数都已开始由表驱动。
-- `S4-07` 仍未完成最终收口。当前采用的是 `Tag.txt + TagConfig.txt` 的分层方案，而不是文档原方案里的单独 `TagRule`；更深的规则字段与完整命名口径仍待后续决定是否继续统一。
+- `S4-07` 已推进到第三阶段。当前仓库新增 `RarityTagBudget.txt -> DRRarityTagBudget -> RarityTagBudgetRuleRegistry -> InventoryTagRuleService`，组件 Tag 数量预算不再写死在 `ResolveRarityTagBudget(...)` 的 `switch` 中，而是按品质从表驱动；至此生成链的候选过滤、权重抽取、数量预算三段都已进入 DataTable 消费闭环。
+- `S4-07` 仍未完成最终收口。当前采用的是 `Tag.txt + RarityTagBudget.txt + TagConfig.txt` 的分层方案，而不是文档原方案里的单独 `TagRule`；更深的元数据字段与完整命名口径仍待后续决定是否继续统一。
 
 ### S4-06 当前代码状态
 
@@ -206,8 +207,8 @@
 
 ### S4 后续执行计划
 
-1. 继续推进 `S4-07`：在现有 `Tag.txt + TagConfig.txt` 分层方案基础上，决定是否补成文档中的完整 `TagRule`，或明确当前双表就是本阶段的等价收口方案。
+1. 继续推进 `S4-07`：在现有 `Tag.txt + RarityTagBudget.txt + TagConfig.txt` 分层方案基础上，决定是否补成文档中的完整 `TagRule`，或明确当前三表就是本阶段的等价收口方案。
-2. `S4-07` 完成标准仍以“表字段被实际消费、参数可解释、运行时与文档口径一致”为准；当前已完成首发 7 个 Tag 的生成规则、参数和说明配置化，后续重点转向是否还要继续配置化更深层的规则字段。
+2. `S4-07` 完成标准仍以“表字段被实际消费、参数可解释、运行时与文档口径一致”为准；当前已完成首发 7 个 Tag 的生成规则、数量预算、参数和说明配置化，后续重点转向是否还要继续配置化更深层的元数据字段。
 3. `BurnSpread`、`IgniteBurst`、`FreezeMask`、`Pierce`、`Overpenetrate` 继续留在后续扩展阶段，不因为 `S4-06` 完成而提前进入当前迭代。
 
 ## 阶段 S5 - 收口耐久规则

docs/TagSystemDesign.md

@@ -77,24 +77,23 @@ Tag 系统需要同时满足四个目标：
 
 ### 4.1 配置层
 
-后续配置层固定采用“`Tag.txt` 基础字典 + `TagRule` 规则表”两层结构，而不是继续把所有规则硬塞进现有 `Tag.txt`。
+当前实现固定采用“`Tag.txt + RarityTagBudget.txt + TagConfig.txt`”三层结构，而不是继续把所有规则硬塞进现有 `Tag.txt`。
 
 - `Tag.txt`
-  - 保留 `TagType`、`Name` 等基础字典信息
+  - 保留 `TagType`、`Name` 等基础字典与按 Tag 的生成规则
-- `TagRule`
+  - 当前实际承载：`MinRarity`、`Weight`
-  - 承载运行规则字段，至少包括以下内容：
+- `RarityTagBudget.txt`
-  - `MinRarity`
+  - 承载按品质的数量预算
-  - `Weight`
+  - 当前实际承载：`Rarity`、`MinCount`、`MaxCount`
-  - `MaxComponentStack`
+- `TagConfig.txt`
-  - `TriggerPhase`
+  - 承载战斗与展示相关配置
-  - `Description`
+  - 当前实际承载：`TriggerPhase`、`Description`、`ParamJson`
-  - `ParamJson` 或等价参数字段
 
 用途：
 
 - `MinRarity`：该 Tag 最低可出现品质
 - `Weight`：同一候选池内抽取权重
-- `MaxComponentStack`：单组件允许的最大层数
+- `MinCount / MaxCount`：该品质组件本次可抽取的 Tag 数量预算
 - `TriggerPhase`：用于战斗结算路由
 - `ParamJson`：承载伤害倍率、持续时间、范围等效果参数
 
@@ -159,7 +158,7 @@ Tag 随机应发生在“组件实例创建时”，而不是组塔时。
 
 ### 5.3 Tag 数量预算
 
-每个品质都保留独立的 Tag 数量预算，而不是按概率硬编码在代码里。
+每个品质都保留独立的 Tag 数量预算，并由 `RarityTagBudget.txt` 驱动，而不是按概率硬编码在代码里。
 
 推荐默认值：
 
@@ -448,7 +447,7 @@ Tag 触发阶段固定拆成四段：
 ## 11. 后续文档与代码动作
 
 1. 先基于本设计回写 `docs/CodeX-TODO.md` 的 `S4-03` 边界
-2. 在 `S4-07` 中新增并消费 `TagRule` 表，保留 `Tag.txt` 作为基础字典
+2. 在 `S4-07` 中补齐并消费 `Tag.txt + RarityTagBudget.txt + TagConfig.txt` 三层表结构
 3. 新增 `TagGenerationService`，先收口实例生成
 4. 新增 `TowerTagAggregationService`，替换当前简单并集逻辑
 5. 评估 `AttackPayload` 是否并入现有 `BulletData`，还是单独引入
@@ -461,7 +460,7 @@ Tag 触发阶段固定拆成四段：
 - Tag 在组件实例创建时随机，不在组塔时随机
 - `PossibleTag` 是候选池，不是最终实例值
 - 塔级 Tag 汇总保留 `Stack`
-- 配置层采用 `Tag.txt + TagRule` 双表结构
+- 配置层采用 `Tag.txt + RarityTagBudget.txt + TagConfig.txt` 分层结构
 - 第一批战斗效果优先做状态类与数值修正类，不优先做穿透 / 爆炸 / 传播
 - MVP 正式首发集合固定为 `Fire`、`Ice`、`Crit`、`Execution`、`Shatter`、`Inferno`、`AbsoluteZero`
 - `BurnSpread` 明确后移，不作为当前首发集合成员
@@ -666,4 +665,4 @@ Execution	斩杀强化
 
 BurnSpread 最多传播 3 次。
 
-否则后期怪物多时会帧率爆炸。
+否则后期怪物多时会帧率爆炸。