chore(test): 初始化回归测试仓（新增 .gitignore，TestsOverview.md 改为 README.md）

把 Test/ 纳入 https://git.gvsds.com/GVSDS/Viper_RegressionTesting 。

1) 新增 .gitignore —— 只保留测试源码，剔除全部构建产物：
   目录   **/output*/（output / output_opt / output_orig / output_verify / output_dbg）、
          **/temp*/（temp / temp_opt）、**/.tpv_build/
   二进制 *.exe *.obj *.o *.out *.a *.lib *.dll
   中间物 *.ll *.vpi *.pyi *.deps.txt *.deps.json *.doc.json *_sha1_map.txt
          _pyi_cache_v1.pkl _pyi_cache_v1.sig.json _shared_sym.json _phase1_manifest.json
   其它   build_all.txt（构建日志）、*.log、__pycache__/、*.bak、IDE 目录
   保留   App/*.vp、project.json / project_opt.json / project.vpj、README.md、两个 .py
   实测 `git add -A --dry-run`：196 个文件，无任何构建产物混入。

2) TestsOverview.md → README.md（作为仓库首页文档）。

3) SequentialRegressionTest.py：7 处 TestsOverview.md 引用同步改为 README.md
   （文档串、OVERVIEW 路径、read_test_order 文档与报错文案、argparse description、
   启动横幅）；同时修正入口路径 PROJECTRANS —— 旧值 <root>/Projectrans.py 已不存在，
   改为 <root>/TransPyC/Projectrans.py（与 regression_test.py:45-48 记录一致），
   否则本脚本会以 "can't open file" 全量失败。
   regression_test.py 无需改动：它按目录扫描 project.json 找项目，不引用该文档。

ZlibDbg/App/main.vp

@@ -0,0 +1,74 @@
+from stdint import *
+import zlib.pyzlib as pyzlib
+import zlib.zdeflate as zdeflate
+import zlib.zinflate as zinflate
+import zlib.zdef as zdef
+import string
+import stdlib
+import t, c
+from stdio import printf
+
+
+def fill_data(data: BYTEPTR, size: t.CSizeT, seed: t.CSizeT, repeating: t.CInt):
+    i: t.CSizeT
+    for i in range(size):
+        if repeating:
+            data[i] = BYTE(65 + (i % 3))
+        else:
+            data[i] = BYTE((i * 31 + seed * 17 + (i * i) % 251) % 256)
+
+
+def roundtrip(seed: t.CSizeT, size: t.CSizeT, repeating: t.CInt, wbits: t.CInt) -> t.CInt:
+    data: BYTEPTR = BYTEPTR(stdlib.malloc(size))
+    fill_data(data, size, seed, repeating)
+
+    out_len: t.CSizeT = 0
+    comp: BYTEPTR = pyzlib.compress(None, data, size,
+                                    pyzlib.Z_DEFAULT_COMPRESSION, wbits, c.Addr(out_len))
+    if not comp:
+        printf("  [seed=%zu size=%zu rep=%d wbits=%d] COMPRESS FAILED: %d %s\n",
+               seed, size, repeating, wbits, pyzlib.get_error_code(), pyzlib.get_error())
+        stdlib.free(data)
+        return -1
+
+    dec_len: t.CSizeT = 0
+    dec: BYTEPTR = pyzlib.decompress(None, comp, out_len, wbits,
+                                     pyzlib.DEF_BUF_SIZE, c.Addr(dec_len))
+    ok: t.CInt = 1
+    if not dec:
+        printf("  [seed=%zu size=%zu rep=%d wbits=%d] DECOMPRESS FAILED: err=%d msg=%s (comp=%zu bytes)\n",
+               seed, size, repeating, wbits, pyzlib.get_error_code(), pyzlib.get_error(), out_len)
+        ok = 0
+    else:
+        printf("  [seed=%zu size=%zu rep=%d wbits=%d] comp=%zu dec=%zu ",
+               seed, size, repeating, wbits, out_len, dec_len)
+        if dec_len != size or string.memcmp(dec, data, size) != 0:
+            printf("CONTENT MISMATCH\n")
+            ok = 0
+        else:
+            printf("OK\n")
+    if dec: stdlib.free(dec)
+    stdlib.free(comp)
+    stdlib.free(data)
+    return 0 if ok else -1
+
+
+def main() -> t.CInt:
+    printf("== zlib roundtrip >256B ==\n")
+    sizes: t.CArray[t.CSizeT, None] = [250, 255, 256, 257, 260, 300, 500, 1000, 4096, 20000]
+    n: t.CInt
+    failed: t.CInt = 0
+    for n in range(10):
+        if roundtrip(t.CSizeT(n), sizes[n], 0, pyzlib.MAX_WBITS) != 0: failed = 1
+    printf("-- random data done --\n")
+    sizes2: t.CArray[t.CSizeT, None] = [256, 257, 300, 1000, 20000]
+    n = 0
+    for n in range(5):
+        if roundtrip(t.CSizeT(n), sizes2[n], 1, pyzlib.MAX_WBITS) != 0: failed = 1
+    printf("-- repeating data done --\n")
+    sizes3: t.CArray[t.CSizeT, None] = [300, 1000]
+    n = 0
+    for n in range(2):
+        if roundtrip(t.CSizeT(n), sizes3[n], 0, pyzlib.MAX_WBITS + 16) != 0: failed = 1
+    printf("-- gzip container done --\n")
+    return 1 if failed else 0

ZlibDbg/project.json

@@ -0,0 +1,38 @@
+{
+    "$schema": "https://raw.githubusercontent.com/TermiNexus/TransPyC/main/schemas/project-schema.json",
+    "name": "ZlibDbg",
+    "version": "1.0.0",
+    "source_dir": "./App",
+    "compiler": {
+        "cmd": "llc",
+        "flags": [
+            "-filetype=obj"
+        ]
+    },
+    "linker": {
+        "cmd": "clang++",
+        "flags": [
+            "-Wl,--allow-multiple-definition",
+            "-lmsvcrt",
+            "-lucrt",
+            "-lpthread",
+            "-lmingwex",
+            "-lkernel32",
+            "-luser32"
+        ],
+        "output": "ZlibDbg.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
+    }
+}