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。

WebTest/App/main.vp

@@ -0,0 +1,81 @@
+import t, c
+from stdint import *
+import stdio
+import stdlib
+import socket
+import memhub
+import requests
+
+
+# 全局 MBuddy 指针
+_mbuddy: memhub.MemBuddy | t.CPtr
+
+
+@t.CExport
+def main() -> int:
+    global _mbuddy
+    stdio.printf("WebTest: HTTP client library test\n")
+
+    # 初始化内存管理器（16MB arena）
+    arena: bytes = stdlib.malloc(16 * 1024 * 1024)
+    if arena is None:
+        stdio.printf("FATAL: malloc arena failed\n")
+        return 1
+
+    _mbuddy = memhub.MemBuddy(arena, 16 * 1024 * 1024)
+    requests._mbuddy = _mbuddy
+
+    # 初始化 Socket 库
+    result: INT = socket.SocketInit()
+    stdio.printf("SocketInit: %d\n", result)
+
+    # 测试 Socket OOP API
+    sock = socket.Socket(socket.AF_INET, socket.SOCK_STREAM)
+    if sock.fd != socket.INVALID_SOCKET:
+        stdio.printf("Socket: OK (fd=%d)\n", sock.fd)
+        sock.close()
+        stdio.printf("Socket.close: OK\n")
+    else:
+        stdio.printf("Socket: FAIL\n")
+
+    # 测试 DNS 解析 — 通过 Socket.connect 间接测试（内部调用 _MakeAddr）
+    stdio.printf("\n--- DNS test ---\n")
+    dns_sock = socket.Socket(socket.AF_INET, socket.SOCK_STREAM)
+    if dns_sock.fd != socket.INVALID_SOCKET:
+        dns_sock.settimeout(5000)
+        result: INT = dns_sock.connect("example.com", 80)
+        if result == 0:
+            stdio.printf("DNS: example.com resolved OK\n")
+        else:
+            stdio.printf("DNS: example.com resolved but connect failed (err in _MakeAddr debug above)\n")
+        dns_sock.close()
+
+    # 测试 HTTP GET — 使用 DNS 解析 example.com
+    stdio.printf("\n--- HTTP GET test (example.com) ---\n")
+    resp = requests.get("http://example.com/")
+    if resp is not None:
+        stdio.printf("requests.get: OK\n")
+        code: INT = resp.status_code
+        length: INT = resp.body_len
+        stdio.printf("  status_code: %d\n", code)
+        stdio.printf("  body_len: %d\n", length)
+        if resp.text is not None and length > 0:
+            print_len: INT = 300
+            if length < print_len:
+                print_len = length
+            stdio.printf("  text (first %d chars):\n", print_len)
+            txt: str = resp.text
+            i: INT = 0
+            while i < print_len and txt[i] != 0:
+                stdio.printf("%c", txt[i])
+                i += 1
+            stdio.printf("\n")
+        requests.release(resp)
+    else:
+        stdio.printf("requests.get: FAIL (network unavailable)\n")
+
+    # 清理
+    socket.SocketCleanup()
+    stdio.printf("\nSocketCleanup: OK\n")
+    stdio.printf("WebTest: ALL PASSED\n")
+    return 0

WebTest/project.json

@@ -0,0 +1,29 @@
+{
+    "$schema": "https://raw.githubusercontent.com/TermiNexus/TransPyC/main/schemas/project-schema.json",
+    "name": "WebTest",
+    "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", "-lws2_32", "-Wl,--allow-multiple-definition"],
+        "output": "WebTest.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
+    }
+}