test(lifetime): 新增 willFree 正/负向工程并注册到回归脚本

NewLifetimeWillFreeTest（二次 free）、NewLifetimeUseAfterFreeTest（释放后使用）为负向；NewLifetimeWillFreeOkTest 验证合法用法与重赋值清除失效态。同步更新 SequentialRegressionTest / regression_test / run_lifetime_negative_tests 与 README。

NewLifetimeWillFreeTest/App/main.vp

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+from stdint import *
+import stdlib
+
+
+# =============================================================================
+# 负向工程（**应当编译失败**，对照工程：NewLifetimeWillFreeOkTest）
+#
+# P2 willFree 标注驱动：`includes/stdlib.vp` 的 free 带 `@life(willFree(p))`，
+# 语义 = "该实参所指对象在本调用返回后失效"。编译器读到被调者的该标注后，把对应
+# **实参变量槽**标为"已失效"，其后再读/传/再 free → LifetimeError（fail-fast）。
+#
+# 本工程：第二次 free(p) 必须在编译期被拒（p 在第一次 free 后已失效）。
+# 期望报错：LifetimeError。
+# =============================================================================
+
+
+export def main() -> int:
+    p: rawptr = stdlib.malloc(8)
+    stdlib.free(p)
+    stdlib.free(p)          # ← 必须被拒：p 已失效（二次释放）
+    return 0

NewLifetimeWillFreeTest/project.json

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+{
+    "$schema": "https://raw.githubusercontent.com/TermiNexus/TransPyC/main/schemas/project-schema.json",
+    "name": "NewLifetimeWillFreeTest",
+    "version": "1.0.0",
+    "source_dir": "./App",
+    "build_dir": "./.tpv_build",
+    "compiler": {
+        "cmd": "llc",
+        "flags": ["-filetype=obj", "-relocation-model=pic"]
+    },
+    "linker": {
+        "cmd": "clang++",
+        "flags": ["-lmsvcrt", "-lucrt", "-lpthread", "-lmingwex", "-lkernel32"],
+        "output": "NewLifetimeWillFreeTest.exe"
+    },
+    "includes": [
+        "../../includes"
+    ],
+    "target": {
+        "triple": "x86_64-pc-windows-gnu",
+        "datalayout": "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+    },
+    "options": {
+        "slice_level": 3,
+        "sha1_slice_level": 1,
+        "target": "llvm",
+        "strict_mode": true
+    }
+}