feat(lang): 新增 cif/celif/celse 条件编译与值引用注解 &T/&temp T，assert 改译 testcheck.check

cif 三件套：StmtGenCifMixin 负责常量求值（含 defined(模块宏) 的 Attribute 形式），链式错配与含运行时变量一律 fail-fast；删掉 c.CIf 家族。值引用：TypeGenResolve 让 CRef/CTempRef 与 t.CPtr 走同一解析路径（&void 折叠为 i8*，删除 t.CNeedPtr），CallGenBase 在调用点按形参模式自动取址（ref 只接受左值，右值 fail-fast；temp 物化临时栈），跨模块经 VpiReader/StubMergerBuild 传递模式。assert：StmtGenMixin 合成 testcheck.check(cond, None, msg)，Translator 检测到 assert 时自动注入 testcheck 导入（带去重与防环），深递归守卫改用 stdio.printf + stdlib.exit（Translator 无 Gen 成员）。

App/lib/Phase/Phase1/Phase1Main.vp

@@ -129,7 +129,7 @@ def _RewriteDepsTxt(temp_dir: str, sha1: str, deps_str: str) -> None:
 
 
 def _BreakContainerCyclesInDeps(temp_dir: str) -> int:
-    """Remove _list/_dict injection cycle edges after scanning and sync deps.txt"""
+    """Remove _list/_dict/testcheck injection cycle edges after scanning and sync deps.txt"""
     if StubMerger._includes_deps_sha1 is None or StubMerger._includes_deps_str is None: return 0
     cnt: sizet = StubMerger._includes_deps_count
     ci: sizet
@@ -137,7 +137,7 @@ def _BreakContainerCyclesInDeps(temp_dir: str) -> int:
         sha1_m: str = StubMerger._includes_deps_sha1 + sizet(ci) * 17
         deps_m: str = StubMerger._includes_deps_str + sizet(ci) * StubMerger.MAX_DEPS_STR_LEN
         if sha1_m is None or deps_m is None: continue
-        if string.strstr(deps_m, "_list") is None and string.strstr(deps_m, "_dict") is None: continue
+        if string.strstr(deps_m, "_list") is None and string.strstr(deps_m, "_dict") is None and string.strstr(deps_m, "testcheck") is None: continue
         # Module name (basename of RelPath without extension)
         rel_m: str = StubMergerStore.LookupSha1RelPath(sha1_m)
         if rel_m is None: continue
@@ -173,6 +173,13 @@ def _BreakContainerCyclesInDeps(temp_dir: str) -> int:
                 dct_deps: str = StubMergerStore.LookupIncludesDeps(dct_sha1)
                 if dct_deps is not None and _DepsContainsName(dct_deps, nm_m) != 0:
                     if _DepsRemoveName(deps_m, "_dict") != 0: _RewriteDepsTxt(temp_dir, sha1_m, deps_m)
+        # testcheck <-> M cycle (assert auto-import)
+        if string.strstr(deps_m, "testcheck") is not None:
+            tc_sha1: str = StubMergerStore.LookupSha1ByModName("testcheck")
+            if tc_sha1 is not None:
+                tc_deps: str = StubMergerStore.LookupIncludesDeps(tc_sha1)
+                if tc_deps is not None and _DepsContainsName(tc_deps, nm_m) != 0:
+                    if _DepsRemoveName(deps_m, "testcheck") != 0: _RewriteDepsTxt(temp_dir, sha1_m, deps_m)
         stdlib.free(nm_m)
     return 0