将 .py 和 .pyi 后缀名改为了 .vp 和 .vpi 后缀名

App/lib/core/Handles/HandlesExpr.vp

@@ -1267,13 +1267,13 @@ def _lookup_cross_module_cdefine(pool: memhub.MemBuddy | t.CPtr,
     if temp_dir is None:
         return -1
 
-    # 6. 构建 pyi 文件路径
+    # 6. 构建 vpi 文件路径
     td_len: t.CSizeT = string.strlen(temp_dir)
-    pyi_path: str = StubMerger._sliced_path(temp_dir, td_len, sha1, "pyi")
+    pyi_path: str = StubMerger._sliced_path(temp_dir, td_len, sha1, "vpi")
     if pyi_path is None:
         return -1
 
-    # 7. 读取 pyi 文件；若不存在或内容过短（空 stub）则回退读取源 .py 文件
+    # 7. 读取 vpi 文件；若不存在或内容过短（空 stub）则回退读取源 .py 文件
     PYI_READ_BUF_SIZE: t.CSizeT = 65536
     pyi_buf: bytes = stdlib.malloc(PYI_READ_BUF_SIZE)
     if pyi_buf is None:
@@ -1283,12 +1283,12 @@ def _lookup_cross_module_cdefine(pool: memhub.MemBuddy | t.CPtr,
     need_py_fallback: int = 0
     bytes_read: LONG = 0
     if pf.closed:
-        # .pyi 文件不存在：回退读取源 .py 文件
+        # .vpi 文件不存在：回退读取源 .py 文件
         need_py_fallback = 1
     else:
         bytes_read = pf.read_all(pyi_buf, PYI_READ_BUF_SIZE)
         pf.close()
-        # pyi 内容过短（< 10 字节）视为空 stub，回退 .py
+        # vpi 内容过短（< 10 字节）视为空 stub，回退 .py
         if bytes_read < 10:
             need_py_fallback = 1
         else:

App/lib/core/IncludesScanner.vp

@@ -101,9 +101,9 @@ def add_file_entry(result: ScanResult | t.CPtr,
         ch: t.CChar = mod_buf[i]
         if ch == '/' or ch == '\\':
             mod_buf[i] = '.'
-    # 去掉 .py 扩展名
+    # 去掉 .vp 或 .py 扩展名（.vp 为 Viper 源，.py 向后兼容）
     if rel_len >= 3:
-        if mod_buf[rel_len - 3] == '.' and mod_buf[rel_len - 2] == 'p' and mod_buf[rel_len - 1] == 'y':
+        if (mod_buf[rel_len - 3] == '.' and mod_buf[rel_len - 2] == 'v' and mod_buf[rel_len - 1] == 'p') or (mod_buf[rel_len - 3] == '.' and mod_buf[rel_len - 2] == 'p' and mod_buf[rel_len - 1] == 'y'):
             mod_buf[rel_len - 3] = '\0'
 
     # 获取条目地址
@@ -295,10 +295,10 @@ def scan_directory_recursive(pool: memhub.MemBuddy | t.CPtr,
             # 递归扫描子目录
             scan_directory_recursive(pool, full_path, rel_path, result)
         else:
-            # 检查是否为 .py 文件
+            # 检查是否为 .vp 或 .py 文件（.vp 为 Viper 源，.py 向后兼容）
             is_py: int = 0
             if fname_len >= 3:
-                if fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'p' and fname[fname_len - 1] == 'y':
+                if (fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'v' and fname[fname_len - 1] == 'p') or (fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'p' and fname[fname_len - 1] == 'y'):
                     is_py = 1
 
             if is_py != 0:

App/lib/core/Phase1.vp

@@ -1082,12 +1082,12 @@ def RunPhase1(mb: memhub.MemBuddy | t.CPtr, includes_dir: str, temp_dir: str,
             failed += 1
             continue
 
-        # 生成 .pyi 存根文件（直接遍历 AST，不依赖 PythonToStubConverter）
+        # 生成 .vpi 存根文件（直接遍历 AST，不依赖 PythonToStubConverter）
         pyi_buf: bytes = stdlib.malloc(PYI_BUF_SIZE)
         if pyi_buf is not None:
             pyi_pos: t.CSizeT = StubConverter._GeneratePyiFromAst(mb, tree, entry.RelPath, pyi_buf, PYI_BUF_SIZE)
             if pyi_pos > 0:
-                pyi_path: str = StubMerger._sliced_path(temp_dir, dir_len, sha1, "pyi")
+                pyi_path: str = StubMerger._sliced_path(temp_dir, dir_len, sha1, "vpi")
                 if pyi_path is not None:
                     pf: fileio.File | t.CPtr = fileio.File(pyi_path, fileio.MODE.W)
                     if not pf.closed:

App/lib/core/Phase2.vp

@@ -117,9 +117,9 @@ def _ScanDirForPyFiles(mb: memhub.MemBuddy | t.CPtr,
                             file_count = _ScanDirForPyFiles(mb, sub_dir, entries, entry_size, file_count, max_files)
                             stdlib.free(sub_dir)
                     else:
-                        # 检查是否是 .py 文件
+                        # 检查是否是 .vp 或 .py 文件（.vp 为 Viper 源，.py 向后兼容）
                         if fname_len > 3:
-                            if fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'p' and fname[fname_len - 1] == 'y':
+                            if (fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'v' and fname[fname_len - 1] == 'p') or (fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'p' and fname[fname_len - 1] == 'y'):
                                 if file_count < max_files:
                                     full_path: bytes = stdlib.malloc(dir_len + fname_len + 2)
                                     if full_path is not None:
@@ -556,12 +556,12 @@ def RunMultiFileProject(mb: memhub.MemBuddy | t.CPtr,
             if fb_comp is not None:
                 viperlib.snprintf(fb_comp, 1024, "[%d/%d] 编译完成: %s", i + 1, file_count, ent.Path)
                 VLogger.info(fb_comp, "PhaseB")
-            # 构造 .obj 路径，检测是否是 main 模块（test_main.py 或 main.py）
+            # 构造 .obj 路径，检测是否是 main 模块（test_main.vp/.py 或 main.vp/.py）
             od_len: t.CSizeT = string.strlen(output_dir)
             is_main_mod: int = 0
-            if string.strstr(ent.Path, "test_main.py") is not None:
+            if string.strstr(ent.Path, "test_main.vp") is not None or string.strstr(ent.Path, "test_main.py") is not None:
                 is_main_mod = 1
-            elif string.strstr(ent.Path, "main.py") is not None:
+            elif string.strstr(ent.Path, "main.vp") is not None or string.strstr(ent.Path, "main.py") is not None:
                 is_main_mod = 1
 
             # 切片路径: output_dir/{sha1前缀}/{sha1}.obj

App/lib/core/StubMerger.vp

@@ -1219,9 +1219,10 @@ def _PathToModuleName(path: str) -> str:
         if psep_ch == '/' or psep_ch == '\\':
             path_start = prefix_len
             plen = plen - prefix_len
-    # 去掉 .py 后缀
-    if plen > 3 and path[path_start + plen - 3] == '.' and path[path_start + plen - 2] == 'p' and path[path_start + plen - 1] == 'y':
-        plen -= 3
+    # 去掉 .vp 或 .py 后缀（.vp 为 Viper 源，.py 向后兼容）
+    if plen > 3:
+        if (path[path_start + plen - 3] == '.' and path[path_start + plen - 2] == 'v' and path[path_start + plen - 1] == 'p') or (path[path_start + plen - 3] == '.' and path[path_start + plen - 2] == 'p' and path[path_start + plen - 1] == 'y'):
+            plen -= 3
     if plen == 0:
         return None
     # 检查是否以 /__init__ 或 \__init__ 结尾（包的 __init__.py）
@@ -1446,7 +1447,7 @@ def _BuildReachableSha1Set(mb: memhub.MemBuddy | t.CPtr, source_dir: str,
             stdlib.free(mod_arr)
             stdlib.free(worklist)
             return -1
-        viperlib.snprintf(pattern, dir_len + 8, "%s/*.py", source_dir)
+        viperlib.snprintf(pattern, dir_len + 8, "%s/*", source_dir)
 
         find_data_size: t.CSizeT = win32file.WIN32_FIND_DATAA.__sizeof__()
         find_data: win32file.WIN32_FIND_DATAA | t.CPtr = stdlib.malloc(find_data_size + 16)
@@ -1462,7 +1463,7 @@ def _BuildReachableSha1Set(mb: memhub.MemBuddy | t.CPtr, source_dir: str,
         if handle == win32base.INVALID_HANDLE_VALUE:
             fb_fd: t.CChar | t.CPtr = VLogger.fmt_buf()
             if fb_fd is not None:
-                viperlib.snprintf(fb_fd, 1024, "未找到 .py 文件: %s", pattern)
+                viperlib.snprintf(fb_fd, 1024, "未找到源文件(.vp/.py): %s", pattern)
                 VLogger.warning(fb_fd, "Reachable")
             stdlib.free(pattern)
             stdlib.free(find_data)
@@ -1477,7 +1478,8 @@ def _BuildReachableSha1Set(mb: memhub.MemBuddy | t.CPtr, source_dir: str,
                 fname_len: t.CSizeT = string.strlen(fname)
                 if fname_len > 3:
                     is_py: int = 0
-                    if fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'p' and fname[fname_len - 1] == 'y':
+                    # 检查 .vp 或 .py 扩展名（.vp 为 Viper 源，.py 向后兼容）
+                    if (fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'v' and fname[fname_len - 1] == 'p') or (fname[fname_len - 3] == '.' and fname[fname_len - 2] == 'p' and fname[fname_len - 1] == 'y'):
                         is_py = 1
                     if is_py != 0:
                         full_path: bytes = stdlib.malloc(dir_len + fname_len + 2)
@@ -1677,11 +1679,19 @@ def _BuildReachableSha1Set(mb: memhub.MemBuddy | t.CPtr, source_dir: str,
                     app_mod_path: bytes = stdlib.malloc(sd_len_ff + mb_len_ff + 6)
                     is_app_src: int = 0
                     if app_mod_path is not None:
-                        viperlib.snprintf(app_mod_path, sd_len_ff + mb_len_ff + 6, "%s/%s.py", source_dir, mod_buf)
+                        # 优先尝试 .vp，向后兼容 .py
+                        viperlib.snprintf(app_mod_path, sd_len_ff + mb_len_ff + 6, "%s/%s.vp", source_dir, mod_buf)
                         af: fileio.File | t.CPtr = fileio.File(app_mod_path, fileio.MODE.R)
                         if not af.closed:
                             is_app_src = 1
                             af.close()
+                        else:
+                            # .vp 不存在，回退 .py
+                            viperlib.snprintf(app_mod_path, sd_len_ff + mb_len_ff + 6, "%s/%s.py", source_dir, mod_buf)
+                            af = fileio.File(app_mod_path, fileio.MODE.R)
+                            if not af.closed:
+                                is_app_src = 1
+                                af.close()
                         stdlib.free(app_mod_path)
                     if is_app_src != 0:
                         # App 源文件，跳过（不 fast-fail）

App/main.vp

@@ -315,11 +315,18 @@ def main() -> int:
     # === 单文件模式：--src 指定时使用指定文件；--project 但无 SourceDir 时回退 ===
     if src_path is None and project is not None:
         if Config.SourceDir is not None:
-            # 构造入口路径: SourceDir/main.py
+            # 构造入口路径: 优先 SourceDir/main.vp，回退 SourceDir/main.py
             sd_len: t.CSizeT = string.strlen(Config.SourceDir)
             path_buf: bytes = stdlib.malloc(sd_len + 16)
             if path_buf is not None:
-                viperlib.snprintf(path_buf, sd_len + 16, "%s/main.py", Config.SourceDir)
+                # 优先尝试 main.vp
+                viperlib.snprintf(path_buf, sd_len + 16, "%s/main.vp", Config.SourceDir)
+                ef: fileio.File | t.CPtr = fileio.File(path_buf, fileio.MODE.R)
+                if ef.closed:
+                    # .vp 不存在，回退 main.py
+                    viperlib.snprintf(path_buf, sd_len + 16, "%s/main.py", Config.SourceDir)
+                else:
+                    ef.close()
                 src_path = path_buf
                 if log is not None:
                     fb4: t.CChar | t.CPtr = VLogger.fmt_buf()