refactor(tpv): 删除 Handles 目录，核心逻辑合并进 Gen

- 新建 Gen/Translator.vp：Translator 类 + Mixin + 常量 + _mbuddy 自 HandlesTranslator 迁入（删 7 个委托壳与 _g_gen）

- GenApi 下沉 7 个 global/nonlocal 管理委托（add/is_global_name、add/is_nonlocal_name、get_nonlocal_type/index、clear_scope_names）+ update_global_func_typestr

- CallGenLeafKit 并入 ExprCallHandle 类，NewExprCallHandle 改本地引用

- 删除 Handles/HandlesExpr/ExprCallTable/HandlesBase（60+ 委托零消费者/纯委托壳）与 Handles 目录整体

- 全 App 56 文件 import 改指 lib.core.Gen.*，清理死 import，委托调用改 GenApi，main/BuildPipeline _g_gen 注入删除

App/lib/Stub/StubGen/VpiReader.vp

@@ -13,10 +13,8 @@ import llvmlite
 import viperlib
 import w32.fileio as fileio
 import lib.core.VLogger as VLogger
-import lib.core.Handles.HandlesExprCall as HandlesExprCall
-import lib.core.Handles.HandlesTranslator as HT
+import lib.core.Gen.Translator as HT
 import lib.Stub.StubMerger.StubMergerStore as StubMergerStore
-import lib.core.Handles.ExprCallTable as ExprCallTable
 
 
 # ============================================================
@@ -1959,7 +1957,7 @@ def _inject_function_declare(pool: memhub.MemBuddy | t.CPtr,
     # 补全全局函数表 TypeStr（参数已全部添加，对齐 FuncGenDef L211 行为）：
     # vpi 注入路径若不补全，跨模块 vtable/调用解析 find_func_entry_global()
     # 时 TypeStr 为空 → "vtable 方法找不到函数实现"（依赖模块晚于本模块编译时必现）
-    ExprCallTable.update_global_func_typestr(pool, fd.name, func)
+    GenApi.update_global_func_typestr(pool, fd.name, func)
 
 
 # ============================================================
@@ -2152,7 +2150,7 @@ def _inject_method_declare(pool: memhub.MemBuddy | t.CPtr,
     # vpi 注入的方法声明若不补全 TypeStr，跨模块继承 vtable 生成时
     # find_func_entry_global().TypeStr 为空 → "vtable 方法找不到函数实现"
     # （astaux.vp 先于 ast.base.vp 编译时必现：AST.accept 仅有 vpi 注入条目）
-    ExprCallTable.update_global_func_typestr(pool, lookup_name, func)
+    GenApi.update_global_func_typestr(pool, lookup_name, func)
 
 
 # ============================================================

App/lib/Stub/StubMerger/StubMergerBuild.vp

@@ -13,7 +13,7 @@ import sys
 import ast
 import lib.core.VLogger as VLogger
 import lib.core.IncludesScanner as IncludesScanner
-import lib.core.Handles.HandlesTranslator as HandlesTranslator
+import lib.core.Gen.Translator as HandlesTranslator
 import lib.Phase.BuildPipeline as BuildPipeline
 import lib.Stub.StubGen.VpiReader as VpiReader
 import lib.Projectrans.Utils as Utils

App/lib/Stub/StubMerger/StubMergerCollect.vp

@@ -12,7 +12,7 @@ import sys
 import ast
 import lib.core.VLogger as VLogger
 import lib.core.IncludesScanner as IncludesScanner
-import lib.core.Handles.HandlesTranslator as HandlesTranslator
+import lib.core.Gen.Translator as HandlesTranslator
 import lib.Phase.BuildPipeline as BuildPipeline
 import lib.Stub.StubGen.VpiReader as VpiReader
 import lib.Projectrans.Utils as Utils

App/lib/Stub/StubMerger/StubMergerIR.vp

@@ -13,7 +13,7 @@ import sys
 import ast
 import lib.core.VLogger as VLogger
 import lib.core.IncludesScanner as IncludesScanner
-import lib.core.Handles.HandlesTranslator as HandlesTranslator
+import lib.core.Gen.Translator as HandlesTranslator
 import lib.Phase.BuildPipeline as BuildPipeline
 import lib.Stub.StubGen.VpiReader as VpiReader
 import lib.Projectrans.Utils as Utils

App/lib/Stub/StubMerger/StubMergerStore.vp

@@ -12,7 +12,7 @@ import sys
 import ast
 import lib.core.VLogger as VLogger
 import lib.core.IncludesScanner as IncludesScanner
-import lib.core.Handles.HandlesTranslator as HandlesTranslator
+import lib.core.Gen.Translator as HandlesTranslator
 import lib.Phase.BuildPipeline as BuildPipeline
 import lib.Stub.StubGen.VpiReader as VpiReader
 import lib.Projectrans.Utils as Utils

App/lib/Stub/StubMerger/StubMergerTopo.vp

@@ -12,7 +12,7 @@ import sys
 import ast
 import lib.core.VLogger as VLogger
 import lib.core.IncludesScanner as IncludesScanner
-import lib.core.Handles.HandlesTranslator as HandlesTranslator
+import lib.core.Gen.Translator as HandlesTranslator
 import lib.Phase.BuildPipeline as BuildPipeline
 import lib.Stub.StubGen.VpiReader as VpiReader
 import lib.Projectrans.Utils as Utils

App/lib/Stub/StubMerger/__init__.vp

@@ -12,7 +12,7 @@ import sys
 import ast
 import lib.core.VLogger as VLogger
 import lib.core.IncludesScanner as IncludesScanner
-import lib.core.Handles.HandlesTranslator as HandlesTranslator
+import lib.core.Gen.Translator as HandlesTranslator
 import lib.Phase.BuildPipeline as BuildPipeline
 import lib.Stub.StubGen.VpiReader as VpiReader
 import lib.Projectrans.Utils as Utils