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/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()
         {